Mercurial > repos > melissacline > ucsc_xena_platform
changeset 33:7ceb967147c3
start xena with no gui
add library files
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/ACKS Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,6 @@ +Thanks to the following people for help with lockfile. + + Scott Dial + Ben Finney + Frank Niessink + Konstantin Veretennicov
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/AUTHORS Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,5 @@ +(no author) <(no author)> +Elmo Todurov <elmo.todurov@skype.net> +Julien Danjou <julien@danjou.info> +Skip Montanaro <skip@pobox.com> +skip.montanaro <skip.montanaro@gmail.com>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/ChangeLog Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,165 @@ +CHANGES +======= + +0.10.2 +------ + +* Fix package name + +0.10.1 +------ + +* Add missing cover env in tox + +0.10.0 +------ + +* Fix documentation bug report address +* Add py34 in tox +* Remove old diff file +* Add .gitreview, tox targets and use pbr +* fix for timeout=0 +* remove 2.5, 3.1 and 3.4 from the list for the time being - may get added back later +* Bugfix: locking two different files in the same directory caused an error during unlocking the last unlocking +* typo + +0.9.1 +----- + +* ignore dist dir +* update to python 3 imports +* python 3 tweaks +* python 3 tweaks +* ignore Emacs backups +* note nose as a dependency +* remove this test file - way incompatible with current code +* stuff to ignore +* Add py33, py34, delete py24, py25 +* Update source location +* merge delete +* merge delete +* more merge stuff +* this didn't come across with svn merge +* all screwed up now +* merge +* merge +* Make it clear that the path and threaded attributes to SymlinkLockFile and MkdirLockFile have the same constraints as for LinkLockFile. In particular, the directory which will contain path must be writable +* add pidlockfile test stuff from Ben Finney - still a few problems - maybe I can get him to solve them :-) +* ignore Sphinx build directory +* Catch up on a little documentation +* adapt decorator patch from issue 5 +* Allow timeout in constructor - resolves issue 3 +* add info to raise statements - from issue 6, yyurevich@jellycrystal.com +* add useful repr() - from issue 6, yyurevich@jellycrystal.com +* add symlinklockfile module +* + py24 +* good for the branch? must be good for the trunk +* add tox stuff, ignore dist dir +* new version, move to Google Code +* +* +* * Thread support is currently broken. This is more likely because of problems in this module, but suppress those tests for now just the same +* By the nature of what it's trying to do PIDLockFile doesn't support threaded operation +* defer creating testdb until we've instantiated a SQLiteLockFile instance +* tweak unique_name slightly +* Specify mode in octal +* update to match pidlockfile change +* missing import +* I think I finally have this correct +* patch pidlockfile module too +* use abs import here as well +* *argh* +* Update to elide new import syntax +* * Move future import for division where it's used. * Use __absolute_import__ to spell relative imports +* Some PIDLockFile tests are failing. Check in anyway so others can consider the problems +* Account for fact that Thread objects in Python 2.4 and earlier do not have an ident attribute +* Make this a daemon thread so if things go awry the test run won't hang +* * Add pidlockfile (not quite working properly) * Rearrange MANIFEST.in slightly to include test directory +* Split those test methods which try both threaded and non-threaded naming schemes. More to do. Obviously you need to have test cases when using the non-threaded naming scheme from multiple threads +* acknowledge Ben and Frank, alphabetize list +* I don't think these are needed any longer - they came back during the hg->svn conversion +* grand renaming: "filelock" -> "lockfile" & "FileLock" -> "LockFile" +* Update for packages +* Avoid using the backwards compatibility functions for FileLock. That object is not deprecated +* how does the test dir keep sneaking into MANIFEST? also, include 2.4.diff in dist +* update for new structure, use of ident attr +* adjust build setup +* move test helpers into test dir +* first cut at packagized lockfile +* Protect some more complex locking stuff so if they fail we don't deadlock +* merge r75 from head +* * One implementation of tname, not two - make it an instance attribute as a result +* beginnings of a packagized lockfile +* get the structure right +* start over with the branches.. +* hmmm +* hmmm +* get us back to lockfile 0.8 +* r72 from hg +* r70 from hg +* r69 from hg +* r68 from hg +* r67 from hg +* r66 from hg +* r65 from hg +* r64 from hg +* r64 from hg +* r63 from hg +* r62 from hg +* r61 from hg +* r60 from hg +* r59 from hg +* r58 from hg +* r57 from hg +* r56 from hg +* r55 from hg +* r54 from hg +* r53 from hg +* r52 from hg +* r51 from hg +* r50 from hg +* r49 from hg +* r47 from hg +* r46 from hg +* r45 from hg +* r44 from hg +* r43 from hg +* r42 from hg +* r41 from hg +* r38 from hg +* r37 from hg +* r36 from hg +* r35 from hg +* r34 from hg +* r33 from hg +* r32 from hg +* r31 from hg +* r29 from hg +* r28 from hg +* r27 from hg +* r26 from hg +* r25 from hg +* r24 from hg +* r23 from hg +* r22 from hg +* r21 from hg +* r20 from hg +* r19 from hg +* r18 from hg +* r16 from hg +* r14 from hg +* r13 from hg +* r12 from hg +* r11 from hg +* r10 from hg +* r9 from hg +* r8 from hg +* r7 from hg +* r6 from hg +* r5 from hg +* r4 from hg +* r3 from hg +* r2 from hg +* r1 from hg +* r0 from hg +* Initial directory structure
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/LICENSE Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,21 @@ +This is the MIT license: http://www.opensource.org/licenses/mit-license.php + +Copyright (c) 2007 Skip Montanaro. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to +deal in the Software without restriction, including without limitation the +rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +sell copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +IN THE SOFTWARE.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/PKG-INFO Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,51 @@ +Metadata-Version: 1.1 +Name: lockfile +Version: 0.10.2 +Summary: Platform-independent file locking module +Home-page: http://launchpad.net/pylockfile +Author: OpenStack +Author-email: openstack-dev@lists.openstack.org +License: UNKNOWN +Description: The lockfile package exports a LockFile class which provides a simple API for + locking files. Unlike the Windows msvcrt.locking function, the fcntl.lockf + and flock functions, and the deprecated posixfile module, the API is + identical across both Unix (including Linux and Mac) and Windows platforms. + The lock mechanism relies on the atomic nature of the link (on Unix) and + mkdir (on Windows) system calls. An implementation based on SQLite is also + provided, more as a demonstration of the possibilities it provides than as + production-quality code. + + Note: In version 0.9 the API changed in two significant ways: + + * It changed from a module defining several classes to a package containing + several modules, each defining a single class. + + * Where classes had been named SomethingFileLock before the last two words + have been reversed, so that class is now SomethingLockFile. + + The previous module-level definitions of LinkFileLock, MkdirFileLock and + SQLiteFileLock will be retained until the 1.0 release. + + Available on GitHub from: + + git://github.com/smontanaro/pylockfile.git + + To install: + + python setup.py install + + +Platform: UNKNOWN +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: MIT License +Classifier: Operating System :: POSIX :: Linux +Classifier: Operating System :: MacOS +Classifier: Operating System :: Microsoft :: Windows :: Windows NT/2000 +Classifier: Operating System :: POSIX +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 2.6 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.3 +Classifier: Topic :: Software Development :: Libraries :: Python Modules
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/README Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,27 @@ +The lockfile package exports a LockFile class which provides a simple API for +locking files. Unlike the Windows msvcrt.locking function, the fcntl.lockf +and flock functions, and the deprecated posixfile module, the API is +identical across both Unix (including Linux and Mac) and Windows platforms. +The lock mechanism relies on the atomic nature of the link (on Unix) and +mkdir (on Windows) system calls. An implementation based on SQLite is also +provided, more as a demonstration of the possibilities it provides than as +production-quality code. + +Note: In version 0.9 the API changed in two significant ways: + + * It changed from a module defining several classes to a package containing + several modules, each defining a single class. + + * Where classes had been named SomethingFileLock before the last two words + have been reversed, so that class is now SomethingLockFile. + +The previous module-level definitions of LinkFileLock, MkdirFileLock and +SQLiteFileLock will be retained until the 1.0 release. + +Available on GitHub from: + + git://github.com/smontanaro/pylockfile.git + +To install: + + python setup.py install
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/RELEASE-NOTES Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,50 @@ +Version 0.9.1 +============= + +* This release moves the source location to Google Code. + +* Threaded support is currently broken. (It might not actually be broken. + It might just be the tests which are broken.) + +Version 0.9 +=========== + +* The lockfile module was reorganized into a package. + +* The names of the three main classes have changed as follows: + + LinkFileLock -> LinkLockFile + MkdirFileLock -> MkdirLockFile + SQLiteFileLock -> SQLiteLockFile + +* A PIDLockFile class was added. + +Version 0.3 +=========== + +* Fix 2.4.diff file error. + +* More documentation updates. + +Version 0.2 +=========== + +* Added 2.4.diff file to patch lockfile to work with Python 2.4 (removes use + of with statement). + +* Renamed _FileLock base class to LockBase to expose it (and its docstrings) + to pydoc. + +* Got rid of time.sleep() calls in tests (thanks to Konstantin + Veretennicov). + +* Use thread.get_ident() as the thread discriminator. + +* Updated documentation a bit. + +* Added RELEASE-NOTES. + +Version 0.1 +=========== + +* First release - All basic functionality there.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/doc/source/Makefile Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,73 @@ +# Makefile for Sphinx documentation +# + +# You can set these variables from the command line. +SPHINXOPTS = +SPHINXBUILD = sphinx-build +PAPER = + +# Internal variables. +PAPEROPT_a4 = -D latex_paper_size=a4 +PAPEROPT_letter = -D latex_paper_size=letter +ALLSPHINXOPTS = -d .build/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) . + +.PHONY: help clean html web pickle htmlhelp latex changes linkcheck + +help: + @echo "Please use \`make <target>' where <target> is one of" + @echo " html to make standalone HTML files" + @echo " pickle to make pickle files (usable by e.g. sphinx-web)" + @echo " htmlhelp to make HTML files and a HTML help project" + @echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter" + @echo " changes to make an overview over all changed/added/deprecated items" + @echo " linkcheck to check all external links for integrity" + +clean: + -rm -rf .build/* + +html: + mkdir -p .build/html .build/doctrees + $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) .build/html + @echo + @echo "Build finished. The HTML pages are in .build/html." + +pickle: + mkdir -p .build/pickle .build/doctrees + $(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) .build/pickle + @echo + @echo "Build finished; now you can process the pickle files or run" + @echo " sphinx-web .build/pickle" + @echo "to start the sphinx-web server." + +web: pickle + +htmlhelp: + mkdir -p .build/htmlhelp .build/doctrees + $(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) .build/htmlhelp + @echo + @echo "Build finished; now you can run HTML Help Workshop with the" \ + ".hhp project file in .build/htmlhelp." + +latex: + mkdir -p .build/latex .build/doctrees + $(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) .build/latex + @echo + @echo "Build finished; the LaTeX files are in .build/latex." + @echo "Run \`make all-pdf' or \`make all-ps' in that directory to" \ + "run these through (pdf)latex." + +changes: + mkdir -p .build/changes .build/doctrees + $(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) .build/changes + @echo + @echo "The overview file is in .build/changes." + +linkcheck: + mkdir -p .build/linkcheck .build/doctrees + $(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) .build/linkcheck + @echo + @echo "Link check complete; look for any errors in the above output " \ + "or in .build/linkcheck/output.txt." + +html.zip: html + (cd .build/html ; zip -r ../../$@ *)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/doc/source/conf.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,179 @@ +# -*- coding: utf-8 -*- +# +# lockfile documentation build configuration file, created by +# sphinx-quickstart on Sat Sep 13 17:54:17 2008. +# +# This file is execfile()d with the current directory set to its containing dir. +# +# The contents of this file are pickled, so don't put values in the namespace +# that aren't pickleable (module imports are okay, they're removed automatically). +# +# All configuration values have a default value; values that are commented out +# serve to show the default value. + +import sys, os + +# If your extensions are in another directory, add it here. If the directory +# is relative to the documentation root, use os.path.abspath to make it +# absolute, like shown here. +#sys.path.append(os.path.abspath('some/directory')) + +# General configuration +# --------------------- + +# Add any Sphinx extension module names here, as strings. They can be extensions +# coming with Sphinx (named 'sphinx.ext.*') or your custom ones. +extensions = [] + +# Add any paths that contain templates here, relative to this directory. +templates_path = ['.templates'] + +# The suffix of source filenames. +source_suffix = '.rst' + +# The master toctree document. +master_doc = 'index' + +# General substitutions. +project = 'lockfile' +copyright = '2008, Skip Montanaro' + +# The default replacements for |version| and |release|, also used in various +# other places throughout the built documents. +# +# The short X.Y version. +version = '0.3' +# The full version, including alpha/beta/rc tags. +release = '0.3' + +# There are two options for replacing |today|: either, you set today to some +# non-false value, then it is used: +#today = '' +# Else, today_fmt is used as the format for a strftime call. +today_fmt = '%B %d, %Y' + +# List of documents that shouldn't be included in the build. +#unused_docs = [] + +# List of directories, relative to source directories, that shouldn't be searched +# for source files. +#exclude_dirs = [] + +# The reST default role (used for this markup: `text`) to use for all documents. +#default_role = None + +# If true, '()' will be appended to :func: etc. cross-reference text. +#add_function_parentheses = True + +# If true, the current module name will be prepended to all description +# unit titles (such as .. function::). +#add_module_names = True + +# If true, sectionauthor and moduleauthor directives will be shown in the +# output. They are ignored by default. +#show_authors = False + +# The name of the Pygments (syntax highlighting) style to use. +pygments_style = 'sphinx' + + +# Options for HTML output +# ----------------------- + +# The style sheet to use for HTML and HTML Help pages. A file of that name +# must exist either in Sphinx' static/ path, or in one of the custom paths +# given in html_static_path. +html_style = 'default.css' + +# The name for this set of Sphinx documents. If None, it defaults to +# "<project> v<release> documentation". +#html_title = None + +# A shorter title for the navigation bar. Default is the same as html_title. +#html_short_title = None + +# The name of an image file (within the static path) to place at the top of +# the sidebar. +#html_logo = None + +# The name of an image file (within the static path) to use as favicon of the +# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32 +# pixels large. +#html_favicon = None + +# Add any paths that contain custom static files (such as style sheets) here, +# relative to this directory. They are copied after the builtin static files, +# so a file named "default.css" will overwrite the builtin "default.css". +#html_static_path = ['.static'] + +# If not '', a 'Last updated on:' timestamp is inserted at every page bottom, +# using the given strftime format. +html_last_updated_fmt = '%b %d, %Y' + +# If true, SmartyPants will be used to convert quotes and dashes to +# typographically correct entities. +#html_use_smartypants = True + +# Custom sidebar templates, maps document names to template names. +#html_sidebars = {} + +# Additional templates that should be rendered to pages, maps page names to +# template names. +#html_additional_pages = {} + +# If false, no module index is generated. +#html_use_modindex = True + +# If false, no index is generated. +#html_use_index = True + +# If true, the index is split into individual pages for each letter. +#html_split_index = False + +# If true, the reST sources are included in the HTML build as _sources/<name>. +#html_copy_source = True + +# If true, an OpenSearch description file will be output, and all pages will +# contain a <link> tag referring to it. The value of this option must be the +# base URL from which the finished HTML is served. +#html_use_opensearch = '' + +# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml"). +#html_file_suffix = '' + +# Output file base name for HTML help builder. +htmlhelp_basename = 'lockfiledoc' + + +# Options for LaTeX output +# ------------------------ + +# The paper size ('letter' or 'a4'). +#latex_paper_size = 'letter' + +# The font size ('10pt', '11pt' or '12pt'). +#latex_font_size = '10pt' + +# Grouping the document tree into LaTeX files. List of tuples +# (source start file, target name, title, author, document class [howto/manual]). +latex_documents = [ + ('lockfile', 'lockfile.tex', 'lockfile Documentation', + 'Skip Montanaro', 'manual'), +] + +# The name of an image file (relative to this directory) to place at the top of +# the title page. +#latex_logo = None + +# For "manual" documents, if this is true, then toplevel headings are parts, +# not chapters. +#latex_use_parts = False + +# Additional stuff for the LaTeX preamble. +#latex_preamble = '' + +# Documents to append as an appendix to all manuals. +#latex_appendices = [] + +# If false, no module index is generated. +#latex_use_modindex = True
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/doc/source/index.rst Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,275 @@ + +:mod:`lockfile` --- Platform-independent file locking +===================================================== + +.. module:: lockfile + :synopsis: Platform-independent file locking +.. moduleauthor:: Skip Montanaro <skip@pobox.com> +.. sectionauthor:: Skip Montanaro <skip@pobox.com> + + +.. note:: + + This package is pre-release software. Between versions 0.8 and 0.9 it + was changed from a module to a package. It is quite possible that the + API and implementation will change again in important ways as people test + it and provide feedback and bug fixes. In particular, if the mkdir-based + locking scheme is sufficient for both Windows and Unix platforms, the + link-based scheme may be deleted so that only a single locking scheme is + used, providing cross-platform lockfile cooperation. + +.. note:: + + The implementation uses the `with` statement, both in the tests and in the + main code, so will only work out-of-the-box with Python 2.5 or later. + However, the use of the `with` statement is minimal, so if you apply the + patch in the included 2.4.diff file you can use it with Python 2.4. It's + possible that it will work in Python 2.3 with that patch applied as well, + though the doctest code relies on APIs new in 2.4, so will have to be + rewritten somewhat to allow testing on 2.3. As they say, patches welcome. + ``;-)`` + +The :mod:`lockfile` package exports a :class:`LockFile` class which provides +a simple API for locking files. Unlike the Windows :func:`msvcrt.locking` +function, the Unix :func:`fcntl.flock`, :func:`fcntl.lockf` and the +deprecated :mod:`posixfile` module, the API is identical across both Unix +(including Linux and Mac) and Windows platforms. The lock mechanism relies +on the atomic nature of the :func:`link` (on Unix) and :func:`mkdir` (On +Windows) system calls. It also contains several lock-method-specific +modules: :mod:`lockfile.linklockfile`, :mod:`lockfile.mkdirlockfile`, and +:mod:`lockfile.sqlitelockfile`, each one exporting a single class. For +backwards compatibility with versions before 0.9 the :class:`LinkFileLock`, +:class:`MkdirFileLock` and :class:`SQLiteFileLock` objects are exposed as +attributes of the top-level lockfile package, though this use was deprecated +starting with version 0.9 and will be removed in version 1.0. + +.. note:: + + The current implementation uses :func:`os.link` on Unix, but since that + function is unavailable on Windows it uses :func:`os.mkdir` there. At + this point it's not clear that using the :func:`os.mkdir` method would be + insufficient on Unix systems. If it proves to be adequate on Unix then + the implementation could be simplified and truly cross-platform locking + would be possible. + +.. note:: + + The current implementation doesn't provide for shared vs. exclusive + locks. It should be possible for multiple reader processes to hold the + lock at the same time. + +The module defines the following exceptions: + +.. exception:: Error + + This is the base class for all exceptions raised by the :class:`LockFile` + class. + +.. exception:: LockError + + This is the base class for all exceptions raised when attempting to lock + a file. + +.. exception:: UnlockError + + This is the base class for all exceptions raised when attempting to + unlock a file. + +.. exception:: LockTimeout + + This exception is raised if the :func:`LockFile.acquire` method is + called with a timeout which expires before an existing lock is released. + +.. exception:: AlreadyLocked + + This exception is raised if the :func:`LockFile.acquire` detects a + file is already locked when in non-blocking mode. + +.. exception:: LockFailed + + This exception is raised if the :func:`LockFile.acquire` detects some + other condition (such as a non-writable directory) which prevents it from + creating its lock file. + +.. exception:: NotLocked + + This exception is raised if the file is not locked when + :func:`LockFile.release` is called. + +.. exception:: NotMyLock + + This exception is raised if the file is locked by another thread or + process when :func:`LockFile.release` is called. + +The following classes are provided: + +.. class:: linklockfile.LinkLockFile(path, threaded=True) + + This class uses the :func:`link(2)` system call as the basic lock + mechanism. *path* is an object in the file system to be locked. It need + not exist, but its directory must exist and be writable at the time the + :func:`acquire` and :func:`release` methods are called. *threaded* is + optional, but when set to :const:`True` locks will be distinguished + between threads in the same process. + +.. class:: symlinklockfile.SymlinkLockFile(path, threaded=True) + + This class uses the :func:`symlink(2)` system call as the basic lock + mechanism. The parameters have the same meaning and constraints as for + the :class:`LinkLockFile` class. + +.. class:: mkdirlockfile.MkdirLockFile(path, threaded=True) + + This class uses the :func:`mkdir(2)` system call as the basic lock + mechanism. The parameters have the same meaning and constraints as for + the :class:`LinkLockFile` class. + +.. class:: sqlitelockfile.SQLiteLockFile(path, threaded=True) + + This class uses the :mod:`sqlite3` module to implement the lock + mechanism. The parameters have the same meaning as for the + :class:`LinkLockFile` class. + +.. class:: LockBase(path, threaded=True) + + This is the base class for all concrete implementations and is available + at the lockfile package level so programmers can implement other locking + schemes. + +.. function:: locked(path, timeout=None) + + This function provides a decorator which insures the decorated function + is always called with the lock held. + +By default, the :const:`LockFile` object refers to the +:class:`mkdirlockfile.MkdirLockFile` class on Windows. On all other +platforms it refers to the :class:`linklockfile.LinkLockFile` class. + +When locking a file the :class:`linklockfile.LinkLockFile` class creates a +uniquely named hard link to an empty lock file. That hard link contains the +hostname, process id, and if locks between threads are distinguished, the +thread identifier. For example, if you want to lock access to a file named +"README", the lock file is named "README.lock". With per-thread locks +enabled the hard link is named HOSTNAME-THREADID-PID. With only per-process +locks enabled the hard link is named HOSTNAME--PID. + +When using the :class:`mkdirlockfile.MkdirLockFile` class the lock file is a +directory. Referring to the example above, README.lock will be a directory +and HOSTNAME-THREADID-PID will be an empty file within that directory. + +.. seealso:: + + Module :mod:`msvcrt` + Provides the :func:`locking` function, the standard Windows way of + locking (parts of) a file. + + Module :mod:`posixfile` + The deprecated (since Python 1.5) way of locking files on Posix systems. + + Module :mod:`fcntl` + Provides the current best way to lock files on Unix systems + (:func:`lockf` and :func:`flock`). + +LockFile Objects +---------------- + +:class:`LockFile` objects support the `context manager` protocol used by the +statement:`with` statement. The timeout option is not supported when used in +this fashion. While support for timeouts could be implemented, there is no +support for handling the eventual :exc:`Timeout` exceptions raised by the +:func:`__enter__` method, so you would have to protect the `with` statement with +a `try` statement. The resulting construct would not be any simpler than just +using a `try` statement in the first place. + +:class:`LockFile` has the following user-visible methods: + +.. method:: LockFile.acquire(timeout=None) + + Lock the file associated with the :class:`LockFile` object. If the + *timeout* is omitted or :const:`None` the caller will block until the + file is unlocked by the object currently holding the lock. If the + *timeout* is zero or a negative number the :exc:`AlreadyLocked` exception + will be raised if the file is currently locked by another process or + thread. If the *timeout* is positive, the caller will block for that + many seconds waiting for the lock to be released. If the lock is not + released within that period the :exc:`LockTimeout` exception will be + raised. + +.. method:: LockFile.release() + + Unlock the file associated with the :class:`LockFile` object. If the + file is not currently locked, the :exc:`NotLocked` exception is raised. + If the file is locked by another thread or process the :exc:`NotMyLock` + exception is raised. + +.. method:: is_locked() + + Return the status of the lock on the current file. If any process or + thread (including the current one) is locking the file, :const:`True` is + returned, otherwise :const:`False` is returned. + +.. method:: break_lock() + + If the file is currently locked, break it. + +.. method:: i_am_locking() + + Returns true if the caller holds the lock. + +Examples +-------- + +This example is the "hello world" for the :mod:`lockfile` package:: + + from lockfile import LockFile + lock = LockFile("/some/file/or/other") + with lock: + print lock.path, 'is locked.' + +To use this with Python 2.4, you can execute:: + + from lockfile import LockFile + lock = LockFile("/some/file/or/other") + lock.acquire() + print lock.path, 'is locked.' + lock.release() + +If you don't want to wait forever, you might try:: + + from lockfile import LockFile + lock = LockFile("/some/file/or/other") + while not lock.i_am_locking(): + try: + lock.acquire(timeout=60) # wait up to 60 seconds + except LockTimeout: + lock.break_lock() + lock.acquire() + print "I locked", lock.path + lock.release() + +You can also insure that a lock is always held when appropriately decorated +functions are called:: + + from lockfile import locked + @locked("/tmp/mylock") + def func(a, b): + return a + b + +Other Libraries +--------------- + +The idea of implementing advisory locking with a standard API is not new +with :mod:`lockfile`. There are a number of other libraries available: + +* locknix - http://pypi.python.org/pypi/locknix - Unix only +* mx.MiscLockFile - from Marc André Lemburg, part of the mx.Base + distribution - cross-platform. +* Twisted - http://twistedmatrix.com/trac/browser/trunk/twisted/python/lockfile.py +* zc.lockfile - http://pypi.python.org/pypi/zc.lockfile + + +Contacting the Author +--------------------- + +If you encounter any problems with ``lockfile``, would like help or want to +submit a patch, check http://launchpad.net/pylockfile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile.egg-info/PKG-INFO Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,51 @@ +Metadata-Version: 1.1 +Name: lockfile +Version: 0.10.2 +Summary: Platform-independent file locking module +Home-page: http://launchpad.net/pylockfile +Author: OpenStack +Author-email: openstack-dev@lists.openstack.org +License: UNKNOWN +Description: The lockfile package exports a LockFile class which provides a simple API for + locking files. Unlike the Windows msvcrt.locking function, the fcntl.lockf + and flock functions, and the deprecated posixfile module, the API is + identical across both Unix (including Linux and Mac) and Windows platforms. + The lock mechanism relies on the atomic nature of the link (on Unix) and + mkdir (on Windows) system calls. An implementation based on SQLite is also + provided, more as a demonstration of the possibilities it provides than as + production-quality code. + + Note: In version 0.9 the API changed in two significant ways: + + * It changed from a module defining several classes to a package containing + several modules, each defining a single class. + + * Where classes had been named SomethingFileLock before the last two words + have been reversed, so that class is now SomethingLockFile. + + The previous module-level definitions of LinkFileLock, MkdirFileLock and + SQLiteFileLock will be retained until the 1.0 release. + + Available on GitHub from: + + git://github.com/smontanaro/pylockfile.git + + To install: + + python setup.py install + + +Platform: UNKNOWN +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: MIT License +Classifier: Operating System :: POSIX :: Linux +Classifier: Operating System :: MacOS +Classifier: Operating System :: Microsoft :: Windows :: Windows NT/2000 +Classifier: Operating System :: POSIX +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 2.6 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.3 +Classifier: Topic :: Software Development :: Libraries :: Python Modules
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile.egg-info/SOURCES.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,26 @@ +ACKS +AUTHORS +ChangeLog +LICENSE +README +RELEASE-NOTES +setup.cfg +setup.py +test-requirements.txt +tox.ini +doc/source/Makefile +doc/source/conf.py +doc/source/index.rst +lockfile/__init__.py +lockfile/linklockfile.py +lockfile/mkdirlockfile.py +lockfile/pidlockfile.py +lockfile/sqlitelockfile.py +lockfile/symlinklockfile.py +lockfile.egg-info/PKG-INFO +lockfile.egg-info/SOURCES.txt +lockfile.egg-info/dependency_links.txt +lockfile.egg-info/not-zip-safe +lockfile.egg-info/top_level.txt +test/compliancetest.py +test/test_lockfile.py \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile.egg-info/dependency_links.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile.egg-info/not-zip-safe Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile.egg-info/top_level.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +lockfile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/__init__.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,326 @@ +""" +lockfile.py - Platform-independent advisory file locks. + +Requires Python 2.5 unless you apply 2.4.diff +Locking is done on a per-thread basis instead of a per-process basis. + +Usage: + +>>> lock = LockFile('somefile') +>>> try: +... lock.acquire() +... except AlreadyLocked: +... print 'somefile', 'is locked already.' +... except LockFailed: +... print 'somefile', 'can\\'t be locked.' +... else: +... print 'got lock' +got lock +>>> print lock.is_locked() +True +>>> lock.release() + +>>> lock = LockFile('somefile') +>>> print lock.is_locked() +False +>>> with lock: +... print lock.is_locked() +True +>>> print lock.is_locked() +False + +>>> lock = LockFile('somefile') +>>> # It is okay to lock twice from the same thread... +>>> with lock: +... lock.acquire() +... +>>> # Though no counter is kept, so you can't unlock multiple times... +>>> print lock.is_locked() +False + +Exceptions: + + Error - base class for other exceptions + LockError - base class for all locking exceptions + AlreadyLocked - Another thread or process already holds the lock + LockFailed - Lock failed for some other reason + UnlockError - base class for all unlocking exceptions + AlreadyUnlocked - File was not locked. + NotMyLock - File was locked but not by the current thread/process +""" + +from __future__ import absolute_import + +import sys +import socket +import os +import threading +import time +import urllib +import warnings +import functools + +# Work with PEP8 and non-PEP8 versions of threading module. +if not hasattr(threading, "current_thread"): + threading.current_thread = threading.currentThread +if not hasattr(threading.Thread, "get_name"): + threading.Thread.get_name = threading.Thread.getName + +__all__ = ['Error', 'LockError', 'LockTimeout', 'AlreadyLocked', + 'LockFailed', 'UnlockError', 'NotLocked', 'NotMyLock', + 'LinkLockFile', 'MkdirLockFile', 'SQLiteLockFile', + 'LockBase', 'locked'] + +class Error(Exception): + """ + Base class for other exceptions. + + >>> try: + ... raise Error + ... except Exception: + ... pass + """ + pass + +class LockError(Error): + """ + Base class for error arising from attempts to acquire the lock. + + >>> try: + ... raise LockError + ... except Error: + ... pass + """ + pass + +class LockTimeout(LockError): + """Raised when lock creation fails within a user-defined period of time. + + >>> try: + ... raise LockTimeout + ... except LockError: + ... pass + """ + pass + +class AlreadyLocked(LockError): + """Some other thread/process is locking the file. + + >>> try: + ... raise AlreadyLocked + ... except LockError: + ... pass + """ + pass + +class LockFailed(LockError): + """Lock file creation failed for some other reason. + + >>> try: + ... raise LockFailed + ... except LockError: + ... pass + """ + pass + +class UnlockError(Error): + """ + Base class for errors arising from attempts to release the lock. + + >>> try: + ... raise UnlockError + ... except Error: + ... pass + """ + pass + +class NotLocked(UnlockError): + """Raised when an attempt is made to unlock an unlocked file. + + >>> try: + ... raise NotLocked + ... except UnlockError: + ... pass + """ + pass + +class NotMyLock(UnlockError): + """Raised when an attempt is made to unlock a file someone else locked. + + >>> try: + ... raise NotMyLock + ... except UnlockError: + ... pass + """ + pass + +class LockBase: + """Base class for platform-specific lock classes.""" + def __init__(self, path, threaded=True, timeout=None): + """ + >>> lock = LockBase('somefile') + >>> lock = LockBase('somefile', threaded=False) + """ + self.path = path + self.lock_file = os.path.abspath(path) + ".lock" + self.hostname = socket.gethostname() + self.pid = os.getpid() + if threaded: + t = threading.current_thread() + # Thread objects in Python 2.4 and earlier do not have ident + # attrs. Worm around that. + ident = getattr(t, "ident", hash(t)) + self.tname = "-%x" % (ident & 0xffffffff) + else: + self.tname = "" + dirname = os.path.dirname(self.lock_file) + + # unique name is mostly about the current process, but must + # also contain the path -- otherwise, two adjacent locked + # files conflict (one file gets locked, creating lock-file and + # unique file, the other one gets locked, creating lock-file + # and overwriting the already existing lock-file, then one + # gets unlocked, deleting both lock-file and unique file, + # finally the last lock errors out upon releasing. + self.unique_name = os.path.join(dirname, + "%s%s.%s%s" % (self.hostname, + self.tname, + self.pid, + hash(self.path))) + self.timeout = timeout + + def acquire(self, timeout=None): + """ + Acquire the lock. + + * If timeout is omitted (or None), wait forever trying to lock the + file. + + * If timeout > 0, try to acquire the lock for that many seconds. If + the lock period expires and the file is still locked, raise + LockTimeout. + + * If timeout <= 0, raise AlreadyLocked immediately if the file is + already locked. + """ + raise NotImplemented("implement in subclass") + + def release(self): + """ + Release the lock. + + If the file is not locked, raise NotLocked. + """ + raise NotImplemented("implement in subclass") + + def is_locked(self): + """ + Tell whether or not the file is locked. + """ + raise NotImplemented("implement in subclass") + + def i_am_locking(self): + """ + Return True if this object is locking the file. + """ + raise NotImplemented("implement in subclass") + + def break_lock(self): + """ + Remove a lock. Useful if a locking thread failed to unlock. + """ + raise NotImplemented("implement in subclass") + + def __enter__(self): + """ + Context manager support. + """ + self.acquire() + return self + + def __exit__(self, *_exc): + """ + Context manager support. + """ + self.release() + + def __repr__(self): + return "<%s: %r -- %r>" % (self.__class__.__name__, self.unique_name, + self.path) + +def _fl_helper(cls, mod, *args, **kwds): + warnings.warn("Import from %s module instead of lockfile package" % mod, + DeprecationWarning, stacklevel=2) + # This is a bit funky, but it's only for awhile. The way the unit tests + # are constructed this function winds up as an unbound method, so it + # actually takes three args, not two. We want to toss out self. + if not isinstance(args[0], str): + # We are testing, avoid the first arg + args = args[1:] + if len(args) == 1 and not kwds: + kwds["threaded"] = True + return cls(*args, **kwds) + +def LinkFileLock(*args, **kwds): + """Factory function provided for backwards compatibility. + + Do not use in new code. Instead, import LinkLockFile from the + lockfile.linklockfile module. + """ + from . import linklockfile + return _fl_helper(linklockfile.LinkLockFile, "lockfile.linklockfile", + *args, **kwds) + +def MkdirFileLock(*args, **kwds): + """Factory function provided for backwards compatibility. + + Do not use in new code. Instead, import MkdirLockFile from the + lockfile.mkdirlockfile module. + """ + from . import mkdirlockfile + return _fl_helper(mkdirlockfile.MkdirLockFile, "lockfile.mkdirlockfile", + *args, **kwds) + +def SQLiteFileLock(*args, **kwds): + """Factory function provided for backwards compatibility. + + Do not use in new code. Instead, import SQLiteLockFile from the + lockfile.mkdirlockfile module. + """ + from . import sqlitelockfile + return _fl_helper(sqlitelockfile.SQLiteLockFile, "lockfile.sqlitelockfile", + *args, **kwds) + +def locked(path, timeout=None): + """Decorator which enables locks for decorated function. + + Arguments: + - path: path for lockfile. + - timeout (optional): Timeout for acquiring lock. + + Usage: + @locked('/var/run/myname', timeout=0) + def myname(...): + ... + """ + def decor(func): + @functools.wraps(func) + def wrapper(*args, **kwargs): + lock = FileLock(path, timeout=timeout) + lock.acquire() + try: + return func(*args, **kwargs) + finally: + lock.release() + return wrapper + return decor + +if hasattr(os, "link"): + from . import linklockfile as _llf + LockFile = _llf.LinkLockFile +else: + from . import mkdirlockfile as _mlf + LockFile = _mlf.MkdirLockFile + +FileLock = LockFile +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/linklockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,73 @@ +from __future__ import absolute_import + +import time +import os + +from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout, + AlreadyLocked) + +class LinkLockFile(LockBase): + """Lock access to a file using atomic property of link(2). + + >>> lock = LinkLockFile('somefile') + >>> lock = LinkLockFile('somefile', threaded=False) + """ + + def acquire(self, timeout=None): + try: + open(self.unique_name, "wb").close() + except IOError: + raise LockFailed("failed to create %s" % self.unique_name) + + timeout = timeout is not None and timeout or self.timeout + end_time = time.time() + if timeout is not None and timeout > 0: + end_time += timeout + + while True: + # Try and create a hard link to it. + try: + os.link(self.unique_name, self.lock_file) + except OSError: + # Link creation failed. Maybe we've double-locked? + nlinks = os.stat(self.unique_name).st_nlink + if nlinks == 2: + # The original link plus the one I created == 2. We're + # good to go. + return + else: + # Otherwise the lock creation failed. + if timeout is not None and time.time() > end_time: + os.unlink(self.unique_name) + if timeout > 0: + raise LockTimeout("Timeout waiting to acquire" + " lock for %s" % + self.path) + else: + raise AlreadyLocked("%s is already locked" % + self.path) + time.sleep(timeout is not None and timeout/10 or 0.1) + else: + # Link creation succeeded. We're good to go. + return + + def release(self): + if not self.is_locked(): + raise NotLocked("%s is not locked" % self.path) + elif not os.path.exists(self.unique_name): + raise NotMyLock("%s is locked, but not by me" % self.path) + os.unlink(self.unique_name) + os.unlink(self.lock_file) + + def is_locked(self): + return os.path.exists(self.lock_file) + + def i_am_locking(self): + return (self.is_locked() and + os.path.exists(self.unique_name) and + os.stat(self.unique_name).st_nlink == 2) + + def break_lock(self): + if os.path.exists(self.lock_file): + os.unlink(self.lock_file) +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/mkdirlockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,83 @@ +from __future__ import absolute_import, division + +import time +import os +import sys +import errno + +from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout, + AlreadyLocked) + +class MkdirLockFile(LockBase): + """Lock file by creating a directory.""" + def __init__(self, path, threaded=True, timeout=None): + """ + >>> lock = MkdirLockFile('somefile') + >>> lock = MkdirLockFile('somefile', threaded=False) + """ + LockBase.__init__(self, path, threaded, timeout) + # Lock file itself is a directory. Place the unique file name into + # it. + self.unique_name = os.path.join(self.lock_file, + "%s.%s%s" % (self.hostname, + self.tname, + self.pid)) + + def acquire(self, timeout=None): + timeout = timeout is not None and timeout or self.timeout + end_time = time.time() + if timeout is not None and timeout > 0: + end_time += timeout + + if timeout is None: + wait = 0.1 + else: + wait = max(0, timeout / 10) + + while True: + try: + os.mkdir(self.lock_file) + except OSError: + err = sys.exc_info()[1] + if err.errno == errno.EEXIST: + # Already locked. + if os.path.exists(self.unique_name): + # Already locked by me. + return + if timeout is not None and time.time() > end_time: + if timeout > 0: + raise LockTimeout("Timeout waiting to acquire" + " lock for %s" % + self.path) + else: + # Someone else has the lock. + raise AlreadyLocked("%s is already locked" % + self.path) + time.sleep(wait) + else: + # Couldn't create the lock for some other reason + raise LockFailed("failed to create %s" % self.lock_file) + else: + open(self.unique_name, "wb").close() + return + + def release(self): + if not self.is_locked(): + raise NotLocked("%s is not locked" % self.path) + elif not os.path.exists(self.unique_name): + raise NotMyLock("%s is locked, but not by me" % self.path) + os.unlink(self.unique_name) + os.rmdir(self.lock_file) + + def is_locked(self): + return os.path.exists(self.lock_file) + + def i_am_locking(self): + return (self.is_locked() and + os.path.exists(self.unique_name)) + + def break_lock(self): + if os.path.exists(self.lock_file): + for name in os.listdir(self.lock_file): + os.unlink(os.path.join(self.lock_file, name)) + os.rmdir(self.lock_file)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/pidlockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,193 @@ +# -*- coding: utf-8 -*- + +# pidlockfile.py +# +# Copyright © 2008–2009 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Python Software Foundation License, version 2 or +# later as published by the Python Software Foundation. +# No warranty expressed or implied. See the file LICENSE.PSF-2 for details. + +""" Lockfile behaviour implemented via Unix PID files. + """ + +from __future__ import absolute_import + +import os +import sys +import errno +import time + +from . import (LockBase, AlreadyLocked, LockFailed, NotLocked, NotMyLock, + LockTimeout) + + +class PIDLockFile(LockBase): + """ Lockfile implemented as a Unix PID file. + + The lock file is a normal file named by the attribute `path`. + A lock's PID file contains a single line of text, containing + the process ID (PID) of the process that acquired the lock. + + >>> lock = PIDLockFile('somefile') + >>> lock = PIDLockFile('somefile') + """ + + def __init__(self, path, threaded=False, timeout=None): + # pid lockfiles don't support threaded operation, so always force + # False as the threaded arg. + LockBase.__init__(self, path, False, timeout) + dirname = os.path.dirname(self.lock_file) + basename = os.path.split(self.path)[-1] + self.unique_name = self.path + + def read_pid(self): + """ Get the PID from the lock file. + """ + return read_pid_from_pidfile(self.path) + + def is_locked(self): + """ Test if the lock is currently held. + + The lock is held if the PID file for this lock exists. + + """ + return os.path.exists(self.path) + + def i_am_locking(self): + """ Test if the lock is held by the current process. + + Returns ``True`` if the current process ID matches the + number stored in the PID file. + """ + return self.is_locked() and os.getpid() == self.read_pid() + + def acquire(self, timeout=None): + """ Acquire the lock. + + Creates the PID file for this lock, or raises an error if + the lock could not be acquired. + """ + + timeout = timeout is not None and timeout or self.timeout + end_time = time.time() + if timeout is not None and timeout > 0: + end_time += timeout + + while True: + try: + write_pid_to_pidfile(self.path) + except OSError as exc: + if exc.errno == errno.EEXIST: + # The lock creation failed. Maybe sleep a bit. + if timeout is not None and time.time() > end_time: + if timeout > 0: + raise LockTimeout("Timeout waiting to acquire" + " lock for %s" % + self.path) + else: + raise AlreadyLocked("%s is already locked" % + self.path) + time.sleep(timeout is not None and timeout/10 or 0.1) + else: + raise LockFailed("failed to create %s" % self.path) + else: + return + + def release(self): + """ Release the lock. + + Removes the PID file to release the lock, or raises an + error if the current process does not hold the lock. + + """ + if not self.is_locked(): + raise NotLocked("%s is not locked" % self.path) + if not self.i_am_locking(): + raise NotMyLock("%s is locked, but not by me" % self.path) + remove_existing_pidfile(self.path) + + def break_lock(self): + """ Break an existing lock. + + Removes the PID file if it already exists, otherwise does + nothing. + + """ + remove_existing_pidfile(self.path) + +def read_pid_from_pidfile(pidfile_path): + """ Read the PID recorded in the named PID file. + + Read and return the numeric PID recorded as text in the named + PID file. If the PID file cannot be read, or if the content is + not a valid PID, return ``None``. + + """ + pid = None + try: + pidfile = open(pidfile_path, 'r') + except IOError: + pass + else: + # According to the FHS 2.3 section on PID files in /var/run: + # + # The file must consist of the process identifier in + # ASCII-encoded decimal, followed by a newline character. + # + # Programs that read PID files should be somewhat flexible + # in what they accept; i.e., they should ignore extra + # whitespace, leading zeroes, absence of the trailing + # newline, or additional lines in the PID file. + + line = pidfile.readline().strip() + try: + pid = int(line) + except ValueError: + pass + pidfile.close() + + return pid + + +def write_pid_to_pidfile(pidfile_path): + """ Write the PID in the named PID file. + + Get the numeric process ID (“PID”) of the current process + and write it to the named file as a line of text. + + """ + open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY) + open_mode = 0o644 + pidfile_fd = os.open(pidfile_path, open_flags, open_mode) + pidfile = os.fdopen(pidfile_fd, 'w') + + # According to the FHS 2.3 section on PID files in /var/run: + # + # The file must consist of the process identifier in + # ASCII-encoded decimal, followed by a newline character. For + # example, if crond was process number 25, /var/run/crond.pid + # would contain three characters: two, five, and newline. + + pid = os.getpid() + line = "%(pid)d\n" % vars() + pidfile.write(line) + pidfile.close() + + +def remove_existing_pidfile(pidfile_path): + """ Remove the named PID file if it exists. + + Removing a PID file that doesn't already exist puts us in the + desired state, so we ignore the condition if the file does not + exist. + + """ + try: + os.remove(pidfile_path) + except OSError as exc: + if exc.errno == errno.ENOENT: + pass + else: + raise
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/sqlitelockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,155 @@ +from __future__ import absolute_import, division + +import time +import os + +try: + unicode +except NameError: + unicode = str + +from . import LockBase, NotLocked, NotMyLock, LockTimeout, AlreadyLocked + +class SQLiteLockFile(LockBase): + "Demonstrate SQL-based locking." + + testdb = None + + def __init__(self, path, threaded=True, timeout=None): + """ + >>> lock = SQLiteLockFile('somefile') + >>> lock = SQLiteLockFile('somefile', threaded=False) + """ + LockBase.__init__(self, path, threaded, timeout) + self.lock_file = unicode(self.lock_file) + self.unique_name = unicode(self.unique_name) + + if SQLiteLockFile.testdb is None: + import tempfile + _fd, testdb = tempfile.mkstemp() + os.close(_fd) + os.unlink(testdb) + del _fd, tempfile + SQLiteLockFile.testdb = testdb + + import sqlite3 + self.connection = sqlite3.connect(SQLiteLockFile.testdb) + + c = self.connection.cursor() + try: + c.execute("create table locks" + "(" + " lock_file varchar(32)," + " unique_name varchar(32)" + ")") + except sqlite3.OperationalError: + pass + else: + self.connection.commit() + import atexit + atexit.register(os.unlink, SQLiteLockFile.testdb) + + def acquire(self, timeout=None): + timeout = timeout is not None and timeout or self.timeout + end_time = time.time() + if timeout is not None and timeout > 0: + end_time += timeout + + if timeout is None: + wait = 0.1 + elif timeout <= 0: + wait = 0 + else: + wait = timeout / 10 + + cursor = self.connection.cursor() + + while True: + if not self.is_locked(): + # Not locked. Try to lock it. + cursor.execute("insert into locks" + " (lock_file, unique_name)" + " values" + " (?, ?)", + (self.lock_file, self.unique_name)) + self.connection.commit() + + # Check to see if we are the only lock holder. + cursor.execute("select * from locks" + " where unique_name = ?", + (self.unique_name,)) + rows = cursor.fetchall() + if len(rows) > 1: + # Nope. Someone else got there. Remove our lock. + cursor.execute("delete from locks" + " where unique_name = ?", + (self.unique_name,)) + self.connection.commit() + else: + # Yup. We're done, so go home. + return + else: + # Check to see if we are the only lock holder. + cursor.execute("select * from locks" + " where unique_name = ?", + (self.unique_name,)) + rows = cursor.fetchall() + if len(rows) == 1: + # We're the locker, so go home. + return + + # Maybe we should wait a bit longer. + if timeout is not None and time.time() > end_time: + if timeout > 0: + # No more waiting. + raise LockTimeout("Timeout waiting to acquire" + " lock for %s" % + self.path) + else: + # Someone else has the lock and we are impatient.. + raise AlreadyLocked("%s is already locked" % self.path) + + # Well, okay. We'll give it a bit longer. + time.sleep(wait) + + def release(self): + if not self.is_locked(): + raise NotLocked("%s is not locked" % self.path) + if not self.i_am_locking(): + raise NotMyLock("%s is locked, but not by me (by %s)" % + (self.unique_name, self._who_is_locking())) + cursor = self.connection.cursor() + cursor.execute("delete from locks" + " where unique_name = ?", + (self.unique_name,)) + self.connection.commit() + + def _who_is_locking(self): + cursor = self.connection.cursor() + cursor.execute("select unique_name from locks" + " where lock_file = ?", + (self.lock_file,)) + return cursor.fetchone()[0] + + def is_locked(self): + cursor = self.connection.cursor() + cursor.execute("select * from locks" + " where lock_file = ?", + (self.lock_file,)) + rows = cursor.fetchall() + return not not rows + + def i_am_locking(self): + cursor = self.connection.cursor() + cursor.execute("select * from locks" + " where lock_file = ?" + " and unique_name = ?", + (self.lock_file, self.unique_name)) + return not not cursor.fetchall() + + def break_lock(self): + cursor = self.connection.cursor() + cursor.execute("delete from locks" + " where lock_file = ?", + (self.lock_file,)) + self.connection.commit()
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/lockfile/symlinklockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,69 @@ +from __future__ import absolute_import + +import time +import os + +from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout, + AlreadyLocked) + +class SymlinkLockFile(LockBase): + """Lock access to a file using symlink(2).""" + + def __init__(self, path, threaded=True, timeout=None): + # super(SymlinkLockFile).__init(...) + LockBase.__init__(self, path, threaded, timeout) + # split it back! + self.unique_name = os.path.split(self.unique_name)[1] + + def acquire(self, timeout=None): + # Hopefully unnecessary for symlink. + #try: + # open(self.unique_name, "wb").close() + #except IOError: + # raise LockFailed("failed to create %s" % self.unique_name) + timeout = timeout is not None and timeout or self.timeout + end_time = time.time() + if timeout is not None and timeout > 0: + end_time += timeout + + while True: + # Try and create a symbolic link to it. + try: + os.symlink(self.unique_name, self.lock_file) + except OSError: + # Link creation failed. Maybe we've double-locked? + if self.i_am_locking(): + # Linked to out unique name. Proceed. + return + else: + # Otherwise the lock creation failed. + if timeout is not None and time.time() > end_time: + if timeout > 0: + raise LockTimeout("Timeout waiting to acquire" + " lock for %s" % + self.path) + else: + raise AlreadyLocked("%s is already locked" % + self.path) + time.sleep(timeout/10 if timeout is not None else 0.1) + else: + # Link creation succeeded. We're good to go. + return + + def release(self): + if not self.is_locked(): + raise NotLocked("%s is not locked" % self.path) + elif not self.i_am_locking(): + raise NotMyLock("%s is locked, but not by me" % self.path) + os.unlink(self.lock_file) + + def is_locked(self): + return os.path.islink(self.lock_file) + + def i_am_locking(self): + return os.path.islink(self.lock_file) and \ + os.readlink(self.lock_file) == self.unique_name + + def break_lock(self): + if os.path.islink(self.lock_file): # exists && link + os.unlink(self.lock_file)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/setup.cfg Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,39 @@ +[metadata] +name = lockfile +summary = Platform-independent file locking module +description-file = + README +author = OpenStack +author-email = openstack-dev@lists.openstack.org +home-page = http://launchpad.net/pylockfile +classifier = + Intended Audience :: Developers + License :: OSI Approved :: MIT License + Operating System :: POSIX :: Linux + Operating System :: MacOS + Operating System :: Microsoft :: Windows :: Windows NT/2000 + Operating System :: POSIX + Programming Language :: Python + Programming Language :: Python :: 2 + Programming Language :: Python :: 2.7 + Programming Language :: Python :: 2.6 + Programming Language :: Python :: 3 + Programming Language :: Python :: 3.3 + Topic :: Software Development :: Libraries :: Python Modules + +[files] +packages = lockfile + +[pbr] +warnerrors = true + +[build_sphinx] +source-dir = doc/source +build-dir = doc/build +all_files = 1 + +[egg_info] +tag_build = +tag_date = 0 +tag_svn_revision = 0 +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/setup.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,30 @@ +#!/usr/bin/env python +# Copyright (c) 2013 Hewlett-Packard Development Company, L.P. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or +# implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT +import setuptools + +# In python < 2.7.4, a lazy loading of package `pbr` will break +# setuptools if some other modules registered functions in `atexit`. +# solution from: http://bugs.python.org/issue15881#msg170215 +try: + import multiprocessing # noqa +except ImportError: + pass + +setuptools.setup( + setup_requires=['pbr'], + pbr=True)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/test-requirements.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,2 @@ +nose +sphinx>=1.1.2,!=1.2.0,<1.3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/test/compliancetest.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,261 @@ +import os +import threading +import shutil + +import lockfile + +class ComplianceTest(object): + def __init__(self): + self.saved_class = lockfile.LockFile + + def _testfile(self): + """Return platform-appropriate file. Helper for tests.""" + import tempfile + return os.path.join(tempfile.gettempdir(), 'trash-%s' % os.getpid()) + + def setup(self): + lockfile.LockFile = self.class_to_test + + def teardown(self): + try: + tf = self._testfile() + if os.path.isdir(tf): + shutil.rmtree(tf) + elif os.path.isfile(tf): + os.unlink(tf) + elif not os.path.exists(tf): + pass + else: + raise SystemError("unrecognized file: %s" % tf) + finally: + lockfile.LockFile = self.saved_class + + def _test_acquire_helper(self, tbool): + # As simple as it gets. + lock = lockfile.LockFile(self._testfile(), threaded=tbool) + lock.acquire() + assert lock.i_am_locking() + lock.release() + assert not lock.is_locked() + +## def test_acquire_basic_threaded(self): +## self._test_acquire_helper(True) + + def test_acquire_basic_unthreaded(self): + self._test_acquire_helper(False) + + def _test_acquire_no_timeout_helper(self, tbool): + # No timeout test + e1, e2 = threading.Event(), threading.Event() + t = _in_thread(self._lock_wait_unlock, e1, e2) + e1.wait() # wait for thread t to acquire lock + lock2 = lockfile.LockFile(self._testfile(), threaded=tbool) + assert lock2.is_locked() + if tbool: + assert not lock2.i_am_locking() + else: + assert lock2.i_am_locking() + + try: + lock2.acquire(timeout=-1) + except lockfile.AlreadyLocked: + pass + else: + lock2.release() + raise AssertionError("did not raise AlreadyLocked in" + " thread %s" % + threading.current_thread().get_name()) + + try: + lock2.acquire(timeout=0) + except lockfile.AlreadyLocked: + pass + else: + lock2.release() + raise AssertionError("did not raise AlreadyLocked in" + " thread %s" % + threading.current_thread().get_name()) + + e2.set() # tell thread t to release lock + t.join() + +## def test_acquire_no_timeout_threaded(self): +## self._test_acquire_no_timeout_helper(True) + +## def test_acquire_no_timeout_unthreaded(self): +## self._test_acquire_no_timeout_helper(False) + + def _test_acquire_timeout_helper(self, tbool): + # Timeout test + e1, e2 = threading.Event(), threading.Event() + t = _in_thread(self._lock_wait_unlock, e1, e2) + e1.wait() # wait for thread t to acquire lock + lock2 = lockfile.LockFile(self._testfile(), threaded=tbool) + assert lock2.is_locked() + try: + lock2.acquire(timeout=0.1) + except lockfile.LockTimeout: + pass + else: + lock2.release() + raise AssertionError("did not raise LockTimeout in thread %s" % + threading.current_thread().get_name()) + + e2.set() + t.join() + + def test_acquire_timeout_threaded(self): + self._test_acquire_timeout_helper(True) + + def test_acquire_timeout_unthreaded(self): + self._test_acquire_timeout_helper(False) + + def _test_context_timeout_helper(self, tbool): + # Timeout test + e1, e2 = threading.Event(), threading.Event() + t = _in_thread(self._lock_wait_unlock, e1, e2) + e1.wait() # wait for thread t to acquire lock + lock2 = lockfile.LockFile(self._testfile(), threaded=tbool, + timeout=0.2) + assert lock2.is_locked() + try: + lock2.acquire() + except lockfile.LockTimeout: + pass + else: + lock2.release() + raise AssertionError("did not raise LockTimeout in thread %s" % + threading.current_thread().get_name()) + + e2.set() + t.join() + + def test_context_timeout_unthreaded(self): + self._test_context_timeout_helper(False) + + def _test_release_basic_helper(self, tbool): + lock = lockfile.LockFile(self._testfile(), threaded=tbool) + lock.acquire() + assert lock.is_locked() + lock.release() + assert not lock.is_locked() + assert not lock.i_am_locking() + try: + lock.release() + except lockfile.NotLocked: + pass + except lockfile.NotMyLock: + raise AssertionError('unexpected exception: %s' % + lockfile.NotMyLock) + else: + raise AssertionError('erroneously unlocked file') + +## def test_release_basic_threaded(self): +## self._test_release_basic_helper(True) + + def test_release_basic_unthreaded(self): + self._test_release_basic_helper(False) + +## def test_release_from_thread(self): +## e1, e2 = threading.Event(), threading.Event() +## t = _in_thread(self._lock_wait_unlock, e1, e2) +## e1.wait() +## lock2 = lockfile.LockFile(self._testfile(), threaded=False) +## assert not lock2.i_am_locking() +## try: +## lock2.release() +## except lockfile.NotMyLock: +## pass +## else: +## raise AssertionError('erroneously unlocked a file locked' +## ' by another thread.') +## e2.set() +## t.join() + + def _test_is_locked_helper(self, tbool): + lock = lockfile.LockFile(self._testfile(), threaded=tbool) + lock.acquire(timeout=2) + assert lock.is_locked() + lock.release() + assert not lock.is_locked(), "still locked after release!" + +## def test_is_locked_threaded(self): +## self._test_is_locked_helper(True) + + def test_is_locked_unthreaded(self): + self._test_is_locked_helper(False) + +## def test_i_am_locking_threaded(self): +## self._test_i_am_locking_helper(True) + + def test_i_am_locking_unthreaded(self): + self._test_i_am_locking_helper(False) + + def _test_i_am_locking_helper(self, tbool): + lock1 = lockfile.LockFile(self._testfile(), threaded=tbool) + assert not lock1.is_locked() + lock1.acquire() + try: + assert lock1.i_am_locking() + lock2 = lockfile.LockFile(self._testfile(), threaded=tbool) + assert lock2.is_locked() + if tbool: + assert not lock2.i_am_locking() + finally: + lock1.release() + + def _test_break_lock_helper(self, tbool): + lock = lockfile.LockFile(self._testfile(), threaded=tbool) + lock.acquire() + assert lock.is_locked() + lock2 = lockfile.LockFile(self._testfile(), threaded=tbool) + assert lock2.is_locked() + lock2.break_lock() + assert not lock2.is_locked() + try: + lock.release() + except lockfile.NotLocked: + pass + else: + raise AssertionError('break lock failed') + +## def test_break_lock_threaded(self): +## self._test_break_lock_helper(True) + + def test_break_lock_unthreaded(self): + self._test_break_lock_helper(False) + + def _lock_wait_unlock(self, event1, event2): + """Lock from another thread. Helper for tests.""" + l = lockfile.LockFile(self._testfile()) + l.acquire() + try: + event1.set() # we're in, + event2.wait() # wait for boss's permission to leave + finally: + l.release() + + def test_enter(self): + lock = lockfile.LockFile(self._testfile()) + lock.acquire() + try: + assert lock.is_locked(), "Not locked after acquire!" + finally: + lock.release() + assert not lock.is_locked(), "still locked after release!" + + def test_decorator(self): + @lockfile.locked(self._testfile()) + def func(a, b): + return a + b + assert func(4, 3) == 7 + +def _in_thread(func, *args, **kwargs): + """Execute func(*args, **kwargs) after dt seconds. Helper for tests.""" + def _f(): + func(*args, **kwargs) + t = threading.Thread(target=_f, name='/*/*') + t.setDaemon(True) + t.start() + return t +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/test/test_lockfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,36 @@ +import sys + +import lockfile.linklockfile +import lockfile.mkdirlockfile +import lockfile.pidlockfile +import lockfile.symlinklockfile + +from compliancetest import ComplianceTest + +class TestLinkLockFile(ComplianceTest): + class_to_test = lockfile.linklockfile.LinkLockFile + +class TestSymlinkLockFile(ComplianceTest): + class_to_test = lockfile.symlinklockfile.SymlinkLockFile + +class TestMkdirLockFile(ComplianceTest): + class_to_test = lockfile.mkdirlockfile.MkdirLockFile + +class TestPIDLockFile(ComplianceTest): + class_to_test = lockfile.pidlockfile.PIDLockFile + +# Check backwards compatibility +class TestLinkFileLock(ComplianceTest): + class_to_test = lockfile.LinkFileLock + +class TestMkdirFileLock(ComplianceTest): + class_to_test = lockfile.MkdirFileLock + +try: + import sqlite3 +except ImportError: + pass +else: + import lockfile.sqlitelockfile + class TestSQLiteLockFile(ComplianceTest): + class_to_test = lockfile.sqlitelockfile.SQLiteLockFile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lockfile-0.10.2/tox.ini Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,28 @@ +# content of: tox.ini , put in same dir as setup.py +[tox] +envlist = py26,py27,py32,py33,py34 + +[testenv] +deps = -r{toxinidir}/test-requirements.txt +commands=nosetests + +[testenv:venv] +commands = {posargs} + +[testenv:pep8] +deps = flake8 +commands = flake8 + +[testenv:docs] +commands = python setup.py build_sphinx + +[testenv:cover] +deps = {[testenv]deps} + coverage +commands = + nosetests --with-coverage --cover-erase --cover-package=lockfile --cover-inclusive [] + +[flake8] +ignore = E121,E123,E128,E221,E226,E261,E265,E301,E302,E713,F401,F841,W291,W293,W391 +exclude=.venv,.git,.tox,dist,doc +show-source = True
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/ChangeLog Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,380 @@ +Version 2.0.5 +============= + +:Released: 2015-02-02 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Refine compatibility of exceptions for file operations. +* Specify the text encoding when opening the changelog file. + + +Version 2.0.4 +============= + +:Released: 2015-01-23 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Record version info via Setuptools commands. +* Remove the custom Setuptools entry points. + This closes Alioth bug#314948. + + +Version 2.0.3 +============= + +:Released: 2015-01-14 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Break circular import dependency for ‘setup.py’. +* Refactor all initial metadata functionality to ‘daemon._metadata’. +* Distribute ‘version’ (and its tests) only in source, not install. +* Build a “universal” (Python 2 and Python 3) wheel. + + +Version 2.0.2 +============= + +:Released: 2015-01-13 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Declare test-time dependency on recent ‘unittest2’. +* Declare packaging-time dependency on ‘docutils’ library. +* Include unit tests for ‘version’ module with source distribution. +* Record version info consistent with distribution metadata. + + +Version 2.0.1 +============= + +:Released: 2015-01-11 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Include the ‘version’ module with source distribution. + + +Version 2.0 +=========== + +:Released: 2015-01-10 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Support both Python 3 (version 3.2 or later) and Python 2 (version + 2.7 or later). +* Document the API of all functions comprehensively in docstrings. +* Add a hacking guide for developers. +* Add explicit credit for contributors. +* Document the security impact of the default umask. + +* Specify explicit text or binary mode when opening files. +* Preserve exception context in custom exceptions. + +* Declare compatibility with current Python versions. +* Depend on Python 3 compatible libraries. +* Update package homepage to Alioth hosted project page. +* Use ‘pydoc.splitdoc’ to get package description text. +* Remove ASCII translation of package description, not needed now the + docstring is a proper Unicode text value. +* Include test suite with source distribution. +* Move package metadata to ‘daemon/_metadata.py’. +* Migrate to JSON (instead of Python) for serialised version info. +* Add unit tests for metadata. +* Store and retrieve version info in Setuptools metadata. + +* Migrate to ‘str.format’ for interpolation of values into text. +* Migrate to ‘mock’ library for mock objects in tests. +* Migrate to ‘testscenarios’ library for unit test scenarios. +* Migrate to ‘unittest2’ library for back-ported improvements. + Remove custom test suite creation. +* Discriminate Python 2-and-3 compatible usage of dict methods. +* Discriminate Python 2-and-3 compatible bytes versus text. +* Declare explicit absolute and relative imports. +* Discriminate between different ‘fileno’ method behaviours. + In Python 3, ‘StringIO.fileno’ is callable but raises an exception. +* Migrate to built-in ‘next’ function. +* Wrap the ‘fromlist’ parameter of ‘__import__’ for Python 3 + compatibility. +* Wrap function introspection for Python 3 compatibility. +* Wrap standard library imports where names changed in Python 3. + + +Version 1.6.1 +============= + +:Released: 2014-08-04 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Use unambiguous “except FooType as foo” syntax. + This is to ease the port to Python 3, where the ambiguous comma + usage is an error. +* Ensure a ‘basestring’ name bound to the base type for strings. + This is to allow checks to work on Python 2 and 3. +* Specify versions of Python supported, as trove classifiers. + +* Update copyright notices. +* Add editor hints for most files. +* Distinguish continuation-line indentation versus block indentation. + +* Use unicode literals by default, specifying bytes where necessary. + This is to ease the port to Python 3, where the default string type + is unicode. +* Update copyright notices. +* Update the GPL license file to version 3, as declared in our + copyright notices. + +* Change license of library code to Apache License 2.0. Rationale at + <URL:http://wiki.python.org/moin/PythonSoftwareFoundationLicenseFaq#Contributing_Code_to_Python>. + + +Version 1.6 +=========== + +:Released: 2010-05-10 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Use absolute imports to disambiguate provenance of names. +* setup.py: Require ‘lockfile >=0.9’. +* daemon/pidfile.py: Renamed from ‘daemon/pidlockfile.py’. Change + references elsewhere to use this new name. +* test/test_pidfile.py: Renamed from ‘test/test_pidlockfile.py’. + Change references elsewhere to use this new name. +* daemon/pidfile.py: Remove functionality now migrated to ‘lockfile’ + library. + +* FAQ: Add some entries and re-structure the document. + +* Use ‘unicode’ data type for all text values. +* Prepare for Python 3 upgrade by tweaking some names and imports. + +* MANIFEST.in: Include the documentation in the distribution. + + +Version 1.5.5 +============= + +:Released: 2010-03-02 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Stop using ‘pkg_resources’ and revert to pre-1.5.3 version-string + handling, until a better way that doesn't break everyone else's + installation can be found. + + +Version 1.5.4 +============= + +:Released: 2010-02-27 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* MANIFEST.in: Explicitly include version data file, otherwise + everything breaks for users of the sdist. + + +Version 1.5.3 +============= + +:Released: 2010-02-26 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* daemon/daemon.py: Invoke the pidfile context manager's ‘__exit__’ + method with the correct arguments (as per + <URL:http://docs.python.org/library/stdtypes.html#typecontextmanager>). + Thanks to Ludvig Ericson for the bug report. +* version: New plain-text data file to store project version string. +* setup.py: Read version string from data file. +* daemon/version/__init__.py: Query version string with ‘pkg_resources’. + +* Add ‘pylint’ configuration for this project. +* Update copyright notices. + + +Version 1.5.2 +============= + +:Released: 2009-10-24 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Ensure we only prevent core dumps if ‘prevent_core’ is true. + Thanks to Denis Bilenko for reporting the lacking implementation of + this documented option. + +* Add initial Frequently Asked Questions document. + + +Version 1.5.1 +============= + +:Released: 2009-09-26 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Make a separate collection of DaemonRunner test scenarios. +* Handle a start request with a timeout on the PID file lock acquire. + +* Implement ‘TimeoutPIDLockFile’ to specify a timeout in advance of + lock acquisition. +* Use lock with timeout for ‘DaemonRunner’. + + +Version 1.5 +=========== + +:Released: 2009-09-24 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Make a separate collection of PIDLockFile test scenarios. + +* Raise specific errors on ‘DaemonRunner’ failures. +* Distinguish different conditions on reading and parsing PID file. +* Refactor code to ‘_terminate_daemon_process’ method. +* Improve explanations in comments and docstrings. +* Don't set pidfile at all if no path specified to constructor. +* Write the PID file using correct OS locking and permissions. +* Close the PID file after writing. +* Implement ‘PIDLockFile’ as subclass of ‘lockfile.LinkFileLock’. +* Remove redundant checks for file existence. + +* Manage the excluded file descriptors as a set (not a list). +* Only inspect the file descriptor of streams if they actually have + one (via a ‘fileno’ method) when determining which file descriptors + to close. Thanks to Ask Solem for revealing this bug. + + +Version 1.4.8 +============= + +:Released: 2009-09-17 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Remove child-exit signal (‘SIGCLD’, ‘SIGCHLD’) from default signal + map. Thanks to Joel Martin for pinpointing this issue. +* Document requirement for ensuring any operating-system specific + signal handlers are considered. +* Refactor ‘fork_then_exit_parent’ functionality to avoid duplicate + code. +* Remove redundant imports. +* Remove unused code from unit test suite scaffold. +* Add specific license terms for unit test suite scaffold. + + +Version 1.4.7 +============= + +:Released: 2009-09-03 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Fix keywords argument for distribution setup. +* Exclude ‘test’ package from distribution installation. + + +Version 1.4.6 +============= + +:Released: 2009-06-21 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Update documentation for changes from latest PEP 3143 revision. +* Implement DaemonContext.is_open method. + + +Version 1.4.5 +============= + +:Released: 2009-05-17 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Register DaemonContext.close method for atexit processing. +* Move PID file cleanup to close method. +* Improve docstrings by reference to, and copy from, PEP 3143. +* Use mock checking capabilities of newer ‘MiniMock’ library. +* Automate building a versioned distribution tarball. +* Include developer documentation files in source distribution. + + +Version 1.4.4 +============= + +:Released: 2009-03-26 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Conform to current PEP version, now released as PEP 3143 “Standard + daemon process library”. +* Ensure UID and GID are set in correct order. +* Delay closing all open files until just before re-binding standard + streams. +* Redirect standard streams to null device by default. + + +Version 1.4.3 +============= + +:Released: 2009-03-19 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Close the PID file context on exit. + + +Version 1.4.2 +============= + +:Released: 2009-03-18 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Context manager methods for DaemonContext. + + +Version 1.4.1 +============= + +:Released: 2009-03-18 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Improvements to docstrings. +* Further conformance with draft PEP. + + +Version 1.4 +=========== + +:Released: 2009-03-17 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Implement the interface from a draft PEP for process daemonisation. +* Complete statement coverage from unit test suite. + + +Version 1.3 +=========== + +:Released: 2009-03-12 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Separate controller (now ‘DaemonRunner’) from daemon process + context (now ‘DaemonContext’). +* Fix many corner cases and bugs. +* Huge increase in unit test suite. + + +Version 1.2 +=========== + +:Released: 2009-01-27 +:Maintainer: Ben Finney <ben+python@benfinney.id.au> + +* Initial release of this project forked from ‘bda.daemon’. Thanks, + Robert Niederreiter. +* Refactor some functionality out to helper functions. +* Begin unit test suite. + + +.. + This is free software: you may copy, modify, and/or distribute this work + under the terms of the Apache License version 2.0 as published by the + Apache Software Foundation. + No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +.. + Local variables: + coding: utf-8 + mode: text + mode: rst + End: + vim: fileencoding=utf-8 filetype=rst :
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/MANIFEST.in Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,7 @@ +include MANIFEST.in +include LICENSE.* +include ChangeLog +recursive-include doc * +include version.py +include test_version.py +recursive-include test *.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/PKG-INFO Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,38 @@ +Metadata-Version: 1.1 +Name: python-daemon +Version: 2.0.5 +Summary: Library to implement a well-behaved Unix daemon process. +Home-page: https://alioth.debian.org/projects/python-daemon/ +Author: Ben Finney +Author-email: ben+python@benfinney.id.au +License: Apache-2 +Description: This library implements the well-behaved daemon specification of + :pep:`3143`, “Standard daemon process library”. + + A well-behaved Unix daemon process is tricky to get right, but the + required steps are much the same for every daemon program. A + `DaemonContext` instance holds the behaviour and configured + process environment for the program; use the instance as a context + manager to enter a daemon state. + + Simple example of usage:: + + import daemon + + from spam import do_main_program + + with daemon.DaemonContext(): + do_main_program() + + Customisation of the steps to become a daemon is available by + setting options on the `DaemonContext` instance; see the + documentation for that class for each option. +Keywords: daemon,fork,unix +Platform: UNKNOWN +Classifier: Development Status :: 4 - Beta +Classifier: License :: OSI Approved :: Apache Software License +Classifier: Operating System :: POSIX +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Intended Audience :: Developers +Classifier: Topic :: Software Development :: Libraries :: Python Modules
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/daemon/__init__.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,49 @@ +# -*- coding: utf-8 -*- + +# daemon/__init__.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2009–2015 Ben Finney <ben+python@benfinney.id.au> +# Copyright © 2006 Robert Niederreiter +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Library to implement a well-behaved Unix daemon process. + + This library implements the well-behaved daemon specification of + :pep:`3143`, “Standard daemon process library”. + + A well-behaved Unix daemon process is tricky to get right, but the + required steps are much the same for every daemon program. A + `DaemonContext` instance holds the behaviour and configured + process environment for the program; use the instance as a context + manager to enter a daemon state. + + Simple example of usage:: + + import daemon + + from spam import do_main_program + + with daemon.DaemonContext(): + do_main_program() + + Customisation of the steps to become a daemon is available by + setting options on the `DaemonContext` instance; see the + documentation for that class for each option. + + """ + +from __future__ import (absolute_import, unicode_literals) + +from .daemon import DaemonContext + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/daemon/_metadata.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,152 @@ +# -*- coding: utf-8 -*- + +# daemon/_metadata.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Package metadata for the ‘python-daemon’ distribution. """ + +from __future__ import (absolute_import, unicode_literals) + +import json +import re +import collections +import datetime + +import pkg_resources + + +distribution_name = "python-daemon" +version_info_filename = "version_info.json" + +def get_distribution_version_info(filename=version_info_filename): + """ Get the version info from the installed distribution. + + :param filename: Base filename of the version info resource. + :return: The version info as a mapping of fields. If the + distribution is not available, the mapping is empty. + + The version info is stored as a metadata file in the + distribution. + + """ + version_info = { + 'release_date': "UNKNOWN", + 'version': "UNKNOWN", + 'maintainer': "UNKNOWN", + } + + try: + distribution = pkg_resources.get_distribution(distribution_name) + except pkg_resources.DistributionNotFound: + distribution = None + + if distribution is not None: + if distribution.has_metadata(version_info_filename): + content = distribution.get_metadata(version_info_filename) + version_info = json.loads(content) + + return version_info + +version_info = get_distribution_version_info() + +version_installed = version_info['version'] + + +rfc822_person_regex = re.compile( + "^(?P<name>[^<]+) <(?P<email>[^>]+)>$") + +ParsedPerson = collections.namedtuple('ParsedPerson', ['name', 'email']) + +def parse_person_field(value): + """ Parse a person field into name and email address. + + :param value: The text value specifying a person. + :return: A 2-tuple (name, email) for the person's details. + + If the `value` does not match a standard person with email + address, the `email` item is ``None``. + + """ + result = (None, None) + + match = rfc822_person_regex.match(value) + if len(value): + if match is not None: + result = ParsedPerson( + name=match.group('name'), + email=match.group('email')) + else: + result = ParsedPerson(name=value, email=None) + + return result + +author_name = "Ben Finney" +author_email = "ben+python@benfinney.id.au" +author = "{name} <{email}>".format(name=author_name, email=author_email) + + +class YearRange: + """ A range of years spanning a period. """ + + def __init__(self, begin, end=None): + self.begin = begin + self.end = end + + def __unicode__(self): + text = "{range.begin:04d}".format(range=self) + if self.end is not None: + if self.end > self.begin: + text = "{range.begin:04d}–{range.end:04d}".format(range=self) + return text + + __str__ = __unicode__ + + +def make_year_range(begin_year, end_date=None): + """ Construct the year range given a start and possible end date. + + :param begin_date: The beginning year (text) for the range. + :param end_date: The end date (text, ISO-8601 format) for the + range, or a non-date token string. + :return: The range of years as a `YearRange` instance. + + If the `end_date` is not a valid ISO-8601 date string, the + range has ``None`` for the end year. + + """ + begin_year = int(begin_year) + + try: + end_date = datetime.datetime.strptime(end_date, "%Y-%m-%d") + except (TypeError, ValueError): + # Specified end_date value is not a valid date. + end_year = None + else: + end_year = end_date.year + + year_range = YearRange(begin=begin_year, end=end_year) + + return year_range + +copyright_year_begin = "2001" +build_date = version_info['release_date'] +copyright_year_range = make_year_range(copyright_year_begin, build_date) + +copyright = "Copyright © {year_range} {author} and others".format( + year_range=copyright_year_range, author=author) +license = "Apache-2" +url = "https://alioth.debian.org/projects/python-daemon/" + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/daemon/daemon.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,926 @@ +# -*- coding: utf-8 -*- + +# daemon/daemon.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# Copyright © 2007–2008 Robert Niederreiter, Jens Klein +# Copyright © 2004–2005 Chad J. Schroeder +# Copyright © 2003 Clark Evans +# Copyright © 2002 Noah Spurrier +# Copyright © 2001 Jürgen Hermann +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Daemon process behaviour. + """ + +from __future__ import (absolute_import, unicode_literals) + +import os +import sys +import resource +import errno +import signal +import socket +import atexit +try: + # Python 2 has both ‘str’ (bytes) and ‘unicode’ (text). + basestring = basestring + unicode = unicode +except NameError: + # Python 3 names the Unicode data type ‘str’. + basestring = str + unicode = str + + +class DaemonError(Exception): + """ Base exception class for errors from this module. """ + + def __init__(self, *args, **kwargs): + self._chain_from_context() + + super(DaemonError, self).__init__(*args, **kwargs) + + def _chain_from_context(self): + _chain_exception_from_existing_exception_context(self, as_cause=True) + + +class DaemonOSEnvironmentError(DaemonError, OSError): + """ Exception raised when daemon OS environment setup receives error. """ + + +class DaemonProcessDetachError(DaemonError, OSError): + """ Exception raised when process detach fails. """ + + +class DaemonContext: + """ Context for turning the current program into a daemon process. + + A `DaemonContext` instance represents the behaviour settings and + process context for the program when it becomes a daemon. The + behaviour and environment is customised by setting options on the + instance, before calling the `open` method. + + Each option can be passed as a keyword argument to the `DaemonContext` + constructor, or subsequently altered by assigning to an attribute on + the instance at any time prior to calling `open`. That is, for + options named `wibble` and `wubble`, the following invocation:: + + foo = daemon.DaemonContext(wibble=bar, wubble=baz) + foo.open() + + is equivalent to:: + + foo = daemon.DaemonContext() + foo.wibble = bar + foo.wubble = baz + foo.open() + + The following options are defined. + + `files_preserve` + :Default: ``None`` + + List of files that should *not* be closed when starting the + daemon. If ``None``, all open file descriptors will be closed. + + Elements of the list are file descriptors (as returned by a file + object's `fileno()` method) or Python `file` objects. Each + specifies a file that is not to be closed during daemon start. + + `chroot_directory` + :Default: ``None`` + + Full path to a directory to set as the effective root directory of + the process. If ``None``, specifies that the root directory is not + to be changed. + + `working_directory` + :Default: ``'/'`` + + Full path of the working directory to which the process should + change on daemon start. + + Since a filesystem cannot be unmounted if a process has its + current working directory on that filesystem, this should either + be left at default or set to a directory that is a sensible “home + directory” for the daemon while it is running. + + `umask` + :Default: ``0`` + + File access creation mask (“umask”) to set for the process on + daemon start. + + A daemon should not rely on the parent process's umask value, + which is beyond its control and may prevent creating a file with + the required access mode. So when the daemon context opens, the + umask is set to an explicit known value. + + If the conventional value of 0 is too open, consider setting a + value such as 0o022, 0o027, 0o077, or another specific value. + Otherwise, ensure the daemon creates every file with an + explicit access mode for the purpose. + + `pidfile` + :Default: ``None`` + + Context manager for a PID lock file. When the daemon context opens + and closes, it enters and exits the `pidfile` context manager. + + `detach_process` + :Default: ``None`` + + If ``True``, detach the process context when opening the daemon + context; if ``False``, do not detach. + + If unspecified (``None``) during initialisation of the instance, + this will be set to ``True`` by default, and ``False`` only if + detaching the process is determined to be redundant; for example, + in the case when the process was started by `init`, by `initd`, or + by `inetd`. + + `signal_map` + :Default: system-dependent + + Mapping from operating system signals to callback actions. + + The mapping is used when the daemon context opens, and determines + the action for each signal's signal handler: + + * A value of ``None`` will ignore the signal (by setting the + signal action to ``signal.SIG_IGN``). + + * A string value will be used as the name of an attribute on the + ``DaemonContext`` instance. The attribute's value will be used + as the action for the signal handler. + + * Any other value will be used as the action for the + signal handler. See the ``signal.signal`` documentation + for details of the signal handler interface. + + The default value depends on which signals are defined on the + running system. Each item from the list below whose signal is + actually defined in the ``signal`` module will appear in the + default map: + + * ``signal.SIGTTIN``: ``None`` + + * ``signal.SIGTTOU``: ``None`` + + * ``signal.SIGTSTP``: ``None`` + + * ``signal.SIGTERM``: ``'terminate'`` + + Depending on how the program will interact with its child + processes, it may need to specify a signal map that + includes the ``signal.SIGCHLD`` signal (received when a + child process exits). See the specific operating system's + documentation for more detail on how to determine what + circumstances dictate the need for signal handlers. + + `uid` + :Default: ``os.getuid()`` + + `gid` + :Default: ``os.getgid()`` + + The user ID (“UID”) value and group ID (“GID”) value to switch + the process to on daemon start. + + The default values, the real UID and GID of the process, will + relinquish any effective privilege elevation inherited by the + process. + + `prevent_core` + :Default: ``True`` + + If true, prevents the generation of core files, in order to avoid + leaking sensitive information from daemons run as `root`. + + `stdin` + :Default: ``None`` + + `stdout` + :Default: ``None`` + + `stderr` + :Default: ``None`` + + Each of `stdin`, `stdout`, and `stderr` is a file-like object + which will be used as the new file for the standard I/O stream + `sys.stdin`, `sys.stdout`, and `sys.stderr` respectively. The file + should therefore be open, with a minimum of mode 'r' in the case + of `stdin`, and mimimum of mode 'w+' in the case of `stdout` and + `stderr`. + + If the object has a `fileno()` method that returns a file + descriptor, the corresponding file will be excluded from being + closed during daemon start (that is, it will be treated as though + it were listed in `files_preserve`). + + If ``None``, the corresponding system stream is re-bound to the + file named by `os.devnull`. + + """ + + __metaclass__ = type + + def __init__( + self, + chroot_directory=None, + working_directory="/", + umask=0, + uid=None, + gid=None, + prevent_core=True, + detach_process=None, + files_preserve=None, + pidfile=None, + stdin=None, + stdout=None, + stderr=None, + signal_map=None, + ): + """ Set up a new instance. """ + self.chroot_directory = chroot_directory + self.working_directory = working_directory + self.umask = umask + self.prevent_core = prevent_core + self.files_preserve = files_preserve + self.pidfile = pidfile + self.stdin = stdin + self.stdout = stdout + self.stderr = stderr + + if uid is None: + uid = os.getuid() + self.uid = uid + if gid is None: + gid = os.getgid() + self.gid = gid + + if detach_process is None: + detach_process = is_detach_process_context_required() + self.detach_process = detach_process + + if signal_map is None: + signal_map = make_default_signal_map() + self.signal_map = signal_map + + self._is_open = False + + @property + def is_open(self): + """ ``True`` if the instance is currently open. """ + return self._is_open + + def open(self): + """ Become a daemon process. + + :return: ``None``. + + Open the daemon context, turning the current program into a daemon + process. This performs the following steps: + + * If this instance's `is_open` property is true, return + immediately. This makes it safe to call `open` multiple times on + an instance. + + * If the `prevent_core` attribute is true, set the resource limits + for the process to prevent any core dump from the process. + + * If the `chroot_directory` attribute is not ``None``, set the + effective root directory of the process to that directory (via + `os.chroot`). + + This allows running the daemon process inside a “chroot gaol” + as a means of limiting the system's exposure to rogue behaviour + by the process. Note that the specified directory needs to + already be set up for this purpose. + + * Set the process UID and GID to the `uid` and `gid` attribute + values. + + * Close all open file descriptors. This excludes those listed in + the `files_preserve` attribute, and those that correspond to the + `stdin`, `stdout`, or `stderr` attributes. + + * Change current working directory to the path specified by the + `working_directory` attribute. + + * Reset the file access creation mask to the value specified by + the `umask` attribute. + + * If the `detach_process` option is true, detach the current + process into its own process group, and disassociate from any + controlling terminal. + + * Set signal handlers as specified by the `signal_map` attribute. + + * If any of the attributes `stdin`, `stdout`, `stderr` are not + ``None``, bind the system streams `sys.stdin`, `sys.stdout`, + and/or `sys.stderr` to the files represented by the + corresponding attributes. Where the attribute has a file + descriptor, the descriptor is duplicated (instead of re-binding + the name). + + * If the `pidfile` attribute is not ``None``, enter its context + manager. + + * Mark this instance as open (for the purpose of future `open` and + `close` calls). + + * Register the `close` method to be called during Python's exit + processing. + + When the function returns, the running program is a daemon + process. + + """ + if self.is_open: + return + + if self.chroot_directory is not None: + change_root_directory(self.chroot_directory) + + if self.prevent_core: + prevent_core_dump() + + change_file_creation_mask(self.umask) + change_working_directory(self.working_directory) + change_process_owner(self.uid, self.gid) + + if self.detach_process: + detach_process_context() + + signal_handler_map = self._make_signal_handler_map() + set_signal_handlers(signal_handler_map) + + exclude_fds = self._get_exclude_file_descriptors() + close_all_open_files(exclude=exclude_fds) + + redirect_stream(sys.stdin, self.stdin) + redirect_stream(sys.stdout, self.stdout) + redirect_stream(sys.stderr, self.stderr) + + if self.pidfile is not None: + self.pidfile.__enter__() + + self._is_open = True + + register_atexit_function(self.close) + + def __enter__(self): + """ Context manager entry point. """ + self.open() + return self + + def close(self): + """ Exit the daemon process context. + + :return: ``None``. + + Close the daemon context. This performs the following steps: + + * If this instance's `is_open` property is false, return + immediately. This makes it safe to call `close` multiple times + on an instance. + + * If the `pidfile` attribute is not ``None``, exit its context + manager. + + * Mark this instance as closed (for the purpose of future `open` + and `close` calls). + + """ + if not self.is_open: + return + + if self.pidfile is not None: + # Follow the interface for telling a context manager to exit, + # <URL:http://docs.python.org/library/stdtypes.html#typecontextmanager>. + self.pidfile.__exit__(None, None, None) + + self._is_open = False + + def __exit__(self, exc_type, exc_value, traceback): + """ Context manager exit point. """ + self.close() + + def terminate(self, signal_number, stack_frame): + """ Signal handler for end-process signals. + + :param signal_number: The OS signal number received. + :param stack_frame: The frame object at the point the + signal was received. + :return: ``None``. + + Signal handler for the ``signal.SIGTERM`` signal. Performs the + following step: + + * Raise a ``SystemExit`` exception explaining the signal. + + """ + exception = SystemExit( + "Terminating on signal {signal_number!r}".format( + signal_number=signal_number)) + raise exception + + def _get_exclude_file_descriptors(self): + """ Get the set of file descriptors to exclude closing. + + :return: A set containing the file descriptors for the + files to be preserved. + + The file descriptors to be preserved are those from the + items in `files_preserve`, and also each of `stdin`, + `stdout`, and `stderr`. For each item: + + * If the item is ``None``, it is omitted from the return + set. + + * If the item's ``fileno()`` method returns a value, that + value is in the return set. + + * Otherwise, the item is in the return set verbatim. + + """ + files_preserve = self.files_preserve + if files_preserve is None: + files_preserve = [] + files_preserve.extend( + item for item in [self.stdin, self.stdout, self.stderr] + if hasattr(item, 'fileno')) + + exclude_descriptors = set() + for item in files_preserve: + if item is None: + continue + file_descriptor = _get_file_descriptor(item) + if file_descriptor is not None: + exclude_descriptors.add(file_descriptor) + else: + exclude_descriptors.add(item) + + return exclude_descriptors + + def _make_signal_handler(self, target): + """ Make the signal handler for a specified target object. + + :param target: A specification of the target for the + handler; see below. + :return: The value for use by `signal.signal()`. + + If `target` is ``None``, return ``signal.SIG_IGN``. If `target` + is a text string, return the attribute of this instance named + by that string. Otherwise, return `target` itself. + + """ + if target is None: + result = signal.SIG_IGN + elif isinstance(target, unicode): + name = target + result = getattr(self, name) + else: + result = target + + return result + + def _make_signal_handler_map(self): + """ Make the map from signals to handlers for this instance. + + :return: The constructed signal map for this instance. + + Construct a map from signal numbers to handlers for this + context instance, suitable for passing to + `set_signal_handlers`. + + """ + signal_handler_map = dict( + (signal_number, self._make_signal_handler(target)) + for (signal_number, target) in self.signal_map.items()) + return signal_handler_map + + +def _get_file_descriptor(obj): + """ Get the file descriptor, if the object has one. + + :param obj: The object expected to be a file-like object. + :return: The file descriptor iff the file supports it; otherwise + ``None``. + + The object may be a non-file object. It may also be a + file-like object with no support for a file descriptor. In + either case, return ``None``. + + """ + file_descriptor = None + if hasattr(obj, 'fileno'): + try: + file_descriptor = obj.fileno() + except ValueError: + # The item doesn't support a file descriptor. + pass + + return file_descriptor + + +def change_working_directory(directory): + """ Change the working directory of this process. + + :param directory: The target directory path. + :return: ``None``. + + """ + try: + os.chdir(directory) + except Exception as exc: + error = DaemonOSEnvironmentError( + "Unable to change working directory ({exc})".format(exc=exc)) + raise error + + +def change_root_directory(directory): + """ Change the root directory of this process. + + :param directory: The target directory path. + :return: ``None``. + + Set the current working directory, then the process root directory, + to the specified `directory`. Requires appropriate OS privileges + for this process. + + """ + try: + os.chdir(directory) + os.chroot(directory) + except Exception as exc: + error = DaemonOSEnvironmentError( + "Unable to change root directory ({exc})".format(exc=exc)) + raise error + + +def change_file_creation_mask(mask): + """ Change the file creation mask for this process. + + :param mask: The numeric file creation mask to set. + :return: ``None``. + + """ + try: + os.umask(mask) + except Exception as exc: + error = DaemonOSEnvironmentError( + "Unable to change file creation mask ({exc})".format(exc=exc)) + raise error + + +def change_process_owner(uid, gid): + """ Change the owning UID and GID of this process. + + :param uid: The target UID for the daemon process. + :param gid: The target GID for the daemon process. + :return: ``None``. + + Set the GID then the UID of the process (in that order, to avoid + permission errors) to the specified `gid` and `uid` values. + Requires appropriate OS privileges for this process. + + """ + try: + os.setgid(gid) + os.setuid(uid) + except Exception as exc: + error = DaemonOSEnvironmentError( + "Unable to change process owner ({exc})".format(exc=exc)) + raise error + + +def prevent_core_dump(): + """ Prevent this process from generating a core dump. + + :return: ``None``. + + Set the soft and hard limits for core dump size to zero. On Unix, + this entirely prevents the process from creating core dump. + + """ + core_resource = resource.RLIMIT_CORE + + try: + # Ensure the resource limit exists on this platform, by requesting + # its current value. + core_limit_prev = resource.getrlimit(core_resource) + except ValueError as exc: + error = DaemonOSEnvironmentError( + "System does not support RLIMIT_CORE resource limit" + " ({exc})".format(exc=exc)) + raise error + + # Set hard and soft limits to zero, i.e. no core dump at all. + core_limit = (0, 0) + resource.setrlimit(core_resource, core_limit) + + +def detach_process_context(): + """ Detach the process context from parent and session. + + :return: ``None``. + + Detach from the parent process and session group, allowing the + parent to exit while this process continues running. + + Reference: “Advanced Programming in the Unix Environment”, + section 13.3, by W. Richard Stevens, published 1993 by + Addison-Wesley. + + """ + + def fork_then_exit_parent(error_message): + """ Fork a child process, then exit the parent process. + + :param error_message: Message for the exception in case of a + detach failure. + :return: ``None``. + :raise DaemonProcessDetachError: If the fork fails. + + """ + try: + pid = os.fork() + if pid > 0: + os._exit(0) + except OSError as exc: + error = DaemonProcessDetachError( + "{message}: [{exc.errno:d}] {exc.strerror}".format( + message=error_message, exc=exc)) + raise error + + fork_then_exit_parent(error_message="Failed first fork") + os.setsid() + fork_then_exit_parent(error_message="Failed second fork") + + +def is_process_started_by_init(): + """ Determine whether the current process is started by `init`. + + :return: ``True`` iff the parent process is `init`; otherwise + ``False``. + + The `init` process is the one with process ID of 1. + + """ + result = False + + init_pid = 1 + if os.getppid() == init_pid: + result = True + + return result + + +def is_socket(fd): + """ Determine whether the file descriptor is a socket. + + :param fd: The file descriptor to interrogate. + :return: ``True`` iff the file descriptor is a socket; otherwise + ``False``. + + Query the socket type of `fd`. If there is no error, the file is a + socket. + + """ + result = False + + file_socket = socket.fromfd(fd, socket.AF_INET, socket.SOCK_RAW) + + try: + socket_type = file_socket.getsockopt( + socket.SOL_SOCKET, socket.SO_TYPE) + except socket.error as exc: + exc_errno = exc.args[0] + if exc_errno == errno.ENOTSOCK: + # Socket operation on non-socket. + pass + else: + # Some other socket error. + result = True + else: + # No error getting socket type. + result = True + + return result + + +def is_process_started_by_superserver(): + """ Determine whether the current process is started by the superserver. + + :return: ``True`` if this process was started by the internet + superserver; otherwise ``False``. + + The internet superserver creates a network socket, and + attaches it to the standard streams of the child process. If + that is the case for this process, return ``True``, otherwise + ``False``. + + """ + result = False + + stdin_fd = sys.__stdin__.fileno() + if is_socket(stdin_fd): + result = True + + return result + + +def is_detach_process_context_required(): + """ Determine whether detaching the process context is required. + + :return: ``True`` iff the process is already detached; otherwise + ``False``. + + The process environment is interrogated for the following: + + * Process was started by `init`; or + + * Process was started by `inetd`. + + If any of the above are true, the process is deemed to be already + detached. + + """ + result = True + if is_process_started_by_init() or is_process_started_by_superserver(): + result = False + + return result + + +def close_file_descriptor_if_open(fd): + """ Close a file descriptor if already open. + + :param fd: The file descriptor to close. + :return: ``None``. + + Close the file descriptor `fd`, suppressing an error in the + case the file was not open. + + """ + try: + os.close(fd) + except EnvironmentError as exc: + if exc.errno == errno.EBADF: + # File descriptor was not open. + pass + else: + error = DaemonOSEnvironmentError( + "Failed to close file descriptor {fd:d} ({exc})".format( + fd=fd, exc=exc)) + raise error + + +MAXFD = 2048 + +def get_maximum_file_descriptors(): + """ Get the maximum number of open file descriptors for this process. + + :return: The number (integer) to use as the maximum number of open + files for this process. + + The maximum is the process hard resource limit of maximum number of + open file descriptors. If the limit is “infinity”, a default value + of ``MAXFD`` is returned. + + """ + limits = resource.getrlimit(resource.RLIMIT_NOFILE) + result = limits[1] + if result == resource.RLIM_INFINITY: + result = MAXFD + return result + + +def close_all_open_files(exclude=set()): + """ Close all open file descriptors. + + :param exclude: Collection of file descriptors to skip when closing + files. + :return: ``None``. + + Closes every file descriptor (if open) of this process. If + specified, `exclude` is a set of file descriptors to *not* + close. + + """ + maxfd = get_maximum_file_descriptors() + for fd in reversed(range(maxfd)): + if fd not in exclude: + close_file_descriptor_if_open(fd) + + +def redirect_stream(system_stream, target_stream): + """ Redirect a system stream to a specified file. + + :param standard_stream: A file object representing a standard I/O + stream. + :param target_stream: The target file object for the redirected + stream, or ``None`` to specify the null device. + :return: ``None``. + + `system_stream` is a standard system stream such as + ``sys.stdout``. `target_stream` is an open file object that + should replace the corresponding system stream object. + + If `target_stream` is ``None``, defaults to opening the + operating system's null device and using its file descriptor. + + """ + if target_stream is None: + target_fd = os.open(os.devnull, os.O_RDWR) + else: + target_fd = target_stream.fileno() + os.dup2(target_fd, system_stream.fileno()) + + +def make_default_signal_map(): + """ Make the default signal map for this system. + + :return: A mapping from signal number to handler object. + + The signals available differ by system. The map will not contain + any signals not defined on the running system. + + """ + name_map = { + 'SIGTSTP': None, + 'SIGTTIN': None, + 'SIGTTOU': None, + 'SIGTERM': 'terminate', + } + signal_map = dict( + (getattr(signal, name), target) + for (name, target) in name_map.items() + if hasattr(signal, name)) + + return signal_map + + +def set_signal_handlers(signal_handler_map): + """ Set the signal handlers as specified. + + :param signal_handler_map: A map from signal number to handler + object. + :return: ``None``. + + See the `signal` module for details on signal numbers and signal + handlers. + + """ + for (signal_number, handler) in signal_handler_map.items(): + signal.signal(signal_number, handler) + + +def register_atexit_function(func): + """ Register a function for processing at program exit. + + :param func: A callable function expecting no arguments. + :return: ``None``. + + The function `func` is registered for a call with no arguments + at program exit. + + """ + atexit.register(func) + + +def _chain_exception_from_existing_exception_context(exc, as_cause=False): + """ Decorate the specified exception with the existing exception context. + + :param exc: The exception instance to decorate. + :param as_cause: If true, the existing context is declared to be + the cause of the exception. + :return: ``None``. + + :PEP:`344` describes syntax and attributes (`__traceback__`, + `__context__`, `__cause__`) for use in exception chaining. + + Python 2 does not have that syntax, so this function decorates + the exception with values from the current exception context. + + """ + (existing_exc_type, existing_exc, existing_traceback) = sys.exc_info() + if as_cause: + exc.__cause__ = existing_exc + else: + exc.__context__ = existing_exc + exc.__traceback__ = existing_traceback + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/daemon/pidfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,67 @@ +# -*- coding: utf-8 -*- + +# daemon/pidfile.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Lockfile behaviour implemented via Unix PID files. + """ + +from __future__ import (absolute_import, unicode_literals) + +from lockfile.pidlockfile import PIDLockFile + + +class TimeoutPIDLockFile(PIDLockFile, object): + """ Lockfile with default timeout, implemented as a Unix PID file. + + This uses the ``PIDLockFile`` implementation, with the + following changes: + + * The `acquire_timeout` parameter to the initialiser will be + used as the default `timeout` parameter for the `acquire` + method. + + """ + + def __init__(self, path, acquire_timeout=None, *args, **kwargs): + """ Set up the parameters of a TimeoutPIDLockFile. + + :param path: Filesystem path to the PID file. + :param acquire_timeout: Value to use by default for the + `acquire` call. + :return: ``None``. + + """ + self.acquire_timeout = acquire_timeout + super(TimeoutPIDLockFile, self).__init__(path, *args, **kwargs) + + def acquire(self, timeout=None, *args, **kwargs): + """ Acquire the lock. + + :param timeout: Specifies the timeout; see below for valid + values. + :return: ``None``. + + The `timeout` defaults to the value set during + initialisation with the `acquire_timeout` parameter. It is + passed to `PIDLockFile.acquire`; see that method for + details. + + """ + if timeout is None: + timeout = self.acquire_timeout + super(TimeoutPIDLockFile, self).acquire(timeout, *args, **kwargs) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/daemon/runner.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,324 @@ +# -*- coding: utf-8 -*- + +# daemon/runner.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2009–2015 Ben Finney <ben+python@benfinney.id.au> +# Copyright © 2007–2008 Robert Niederreiter, Jens Klein +# Copyright © 2003 Clark Evans +# Copyright © 2002 Noah Spurrier +# Copyright © 2001 Jürgen Hermann +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Daemon runner library. + """ + +from __future__ import (absolute_import, unicode_literals) + +import sys +import os +import signal +import errno +try: + # Python 3 standard library. + ProcessLookupError +except NameError: + # No such class in Python 2. + ProcessLookupError = NotImplemented + +import lockfile + +from . import pidfile +from .daemon import (basestring, unicode) +from .daemon import DaemonContext +from .daemon import _chain_exception_from_existing_exception_context + + +class DaemonRunnerError(Exception): + """ Abstract base class for errors from DaemonRunner. """ + + def __init__(self, *args, **kwargs): + self._chain_from_context() + + super(DaemonRunnerError, self).__init__(*args, **kwargs) + + def _chain_from_context(self): + _chain_exception_from_existing_exception_context(self, as_cause=True) + + +class DaemonRunnerInvalidActionError(DaemonRunnerError, ValueError): + """ Raised when specified action for DaemonRunner is invalid. """ + + def _chain_from_context(self): + # This exception is normally not caused by another. + _chain_exception_from_existing_exception_context(self, as_cause=False) + + +class DaemonRunnerStartFailureError(DaemonRunnerError, RuntimeError): + """ Raised when failure starting DaemonRunner. """ + + +class DaemonRunnerStopFailureError(DaemonRunnerError, RuntimeError): + """ Raised when failure stopping DaemonRunner. """ + + +class DaemonRunner: + """ Controller for a callable running in a separate background process. + + The first command-line argument is the action to take: + + * 'start': Become a daemon and call `app.run()`. + * 'stop': Exit the daemon process specified in the PID file. + * 'restart': Stop, then start. + + """ + + __metaclass__ = type + + start_message = "started with pid {pid:d}" + + def __init__(self, app): + """ Set up the parameters of a new runner. + + :param app: The application instance; see below. + :return: ``None``. + + The `app` argument must have the following attributes: + + * `stdin_path`, `stdout_path`, `stderr_path`: Filesystem paths + to open and replace the existing `sys.stdin`, `sys.stdout`, + `sys.stderr`. + + * `pidfile_path`: Absolute filesystem path to a file that will + be used as the PID file for the daemon. If ``None``, no PID + file will be used. + + * `pidfile_timeout`: Used as the default acquisition timeout + value supplied to the runner's PID lock file. + + * `run`: Callable that will be invoked when the daemon is + started. + + """ + self.parse_args() + self.app = app + self.daemon_context = DaemonContext() + self.daemon_context.stdin = open(app.stdin_path, 'rt') + self.daemon_context.stdout = open(app.stdout_path, 'w+t') + self.daemon_context.stderr = open( + app.stderr_path, 'w+t', buffering=0) + + self.pidfile = None + if app.pidfile_path is not None: + self.pidfile = make_pidlockfile( + app.pidfile_path, app.pidfile_timeout) + self.daemon_context.pidfile = self.pidfile + + def _usage_exit(self, argv): + """ Emit a usage message, then exit. + + :param argv: The command-line arguments used to invoke the + program, as a sequence of strings. + :return: ``None``. + + """ + progname = os.path.basename(argv[0]) + usage_exit_code = 2 + action_usage = "|".join(self.action_funcs.keys()) + message = "usage: {progname} {usage}".format( + progname=progname, usage=action_usage) + emit_message(message) + sys.exit(usage_exit_code) + + def parse_args(self, argv=None): + """ Parse command-line arguments. + + :param argv: The command-line arguments used to invoke the + program, as a sequence of strings. + + :return: ``None``. + + The parser expects the first argument as the program name, the + second argument as the action to perform. + + If the parser fails to parse the arguments, emit a usage + message and exit the program. + + """ + if argv is None: + argv = sys.argv + + min_args = 2 + if len(argv) < min_args: + self._usage_exit(argv) + + self.action = unicode(argv[1]) + if self.action not in self.action_funcs: + self._usage_exit(argv) + + def _start(self): + """ Open the daemon context and run the application. + + :return: ``None``. + :raises DaemonRunnerStartFailureError: If the PID file cannot + be locked by this process. + + """ + if is_pidfile_stale(self.pidfile): + self.pidfile.break_lock() + + try: + self.daemon_context.open() + except lockfile.AlreadyLocked: + error = DaemonRunnerStartFailureError( + "PID file {pidfile.path!r} already locked".format( + pidfile=self.pidfile)) + raise error + + pid = os.getpid() + message = self.start_message.format(pid=pid) + emit_message(message) + + self.app.run() + + def _terminate_daemon_process(self): + """ Terminate the daemon process specified in the current PID file. + + :return: ``None``. + :raises DaemonRunnerStopFailureError: If terminating the daemon + fails with an OS error. + + """ + pid = self.pidfile.read_pid() + try: + os.kill(pid, signal.SIGTERM) + except OSError as exc: + error = DaemonRunnerStopFailureError( + "Failed to terminate {pid:d}: {exc}".format( + pid=pid, exc=exc)) + raise error + + def _stop(self): + """ Exit the daemon process specified in the current PID file. + + :return: ``None``. + :raises DaemonRunnerStopFailureError: If the PID file is not + already locked. + + """ + if not self.pidfile.is_locked(): + error = DaemonRunnerStopFailureError( + "PID file {pidfile.path!r} not locked".format( + pidfile=self.pidfile)) + raise error + + if is_pidfile_stale(self.pidfile): + self.pidfile.break_lock() + else: + self._terminate_daemon_process() + + def _restart(self): + """ Stop, then start. + """ + self._stop() + self._start() + + action_funcs = { + 'start': _start, + 'stop': _stop, + 'restart': _restart, + } + + def _get_action_func(self): + """ Get the function for the specified action. + + :return: The function object corresponding to the specified + action. + :raises DaemonRunnerInvalidActionError: if the action is + unknown. + + The action is specified by the `action` attribute, which is set + during `parse_args`. + + """ + try: + func = self.action_funcs[self.action] + except KeyError: + error = DaemonRunnerInvalidActionError( + "Unknown action: {action!r}".format( + action=self.action)) + raise error + return func + + def do_action(self): + """ Perform the requested action. + + :return: ``None``. + + The action is specified by the `action` attribute, which is set + during `parse_args`. + + """ + func = self._get_action_func() + func(self) + + +def emit_message(message, stream=None): + """ Emit a message to the specified stream (default `sys.stderr`). """ + if stream is None: + stream = sys.stderr + stream.write("{message}\n".format(message=message)) + stream.flush() + + +def make_pidlockfile(path, acquire_timeout): + """ Make a PIDLockFile instance with the given filesystem path. """ + if not isinstance(path, basestring): + error = ValueError("Not a filesystem path: {path!r}".format( + path=path)) + raise error + if not os.path.isabs(path): + error = ValueError("Not an absolute path: {path!r}".format( + path=path)) + raise error + lockfile = pidfile.TimeoutPIDLockFile(path, acquire_timeout) + + return lockfile + + +def is_pidfile_stale(pidfile): + """ Determine whether a PID file is stale. + + :return: ``True`` iff the PID file is stale; otherwise ``False``. + + The PID file is “stale” if its contents are valid but do not + match the PID of a currently-running process. + + """ + result = False + + pidfile_pid = pidfile.read_pid() + if pidfile_pid is not None: + try: + os.kill(pidfile_pid, signal.SIG_DFL) + except ProcessLookupError: + # The specified PID does not exist. + result = True + except OSError as exc: + if exc.errno == errno.ESRCH: + # Under Python 2, process lookup error is an OSError. + # The specified PID does not exist. + result = True + + return result + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/doc/CREDITS Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,53 @@ +Credits for contributors to ‘python-daemon’ +########################################### + +:Updated: 2014-12-23 + +The ‘python-daemon’ library is the work of many contributors. + + +Primary developers +================== + +The library has been maintained over the years by: + +* Ben Finney <ben+python@benfinney.id.au> +* Robert Niederreiter +* Jens Klein + + +Precursors +========== + +The library code base is inherited from prior work by: + +* Chad J. Schroeder +* Clark Evans +* Noah Spurrier +* Jürgen Hermann + + +Additional contributors +======================= + +People who have also contributed substantial improvements: + + + +.. + This is free software: you may copy, modify, and/or distribute this work + under the terms of the Apache License version 2.0 as published by the + Apache Software Foundation. + No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +.. + Local variables: + coding: utf-8 + mode: text + mode: rst + time-stamp-format: "%:y-%02m-%02d" + time-stamp-start: "^:Updated:[ ]+" + time-stamp-end: "$" + time-stamp-line-limit: 20 + End: + vim: fileencoding=utf-8 filetype=rst :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/doc/FAQ Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,156 @@ +‘python-daemon’ Frequently Asked Questions +########################################## + +:Author: Ben Finney <ben+python@benfinney.id.au> +:Updated: 2015-01-10 + +.. contents:: +.. + 1 General + 1.1 What is the purpose of the ‘python-daemon’ library? + 1.2 How can I run a service communicating with a separate daemon process? + 2 Security + 2.1 Why is the umask set to 0 by default? + 3 File descriptors + 3.1 Why does the output stop after opening the daemon context? + 3.2 How can I preserve a ‘logging’ handler's file descriptor? + +General +======= + +What is the purpose of the ‘python-daemon’ library? +--------------------------------------------------- + +The ‘python-daemon’ library has a deliberately narrow focus: that of +being a reference implementation for `PEP 3143`_, “Standard daemon +process library”. + +.. _`PEP 3143`: http://www.python.org/dev/peps/pep-3143 + +How can I run a service communicating with a separate daemon process? +--------------------------------------------------------------------- + +As specified in `PEP 3143`_, the ‘python-daemon’ library is +specifically focussed on the goal of having the *current running +program* become a well-behaved Unix daemon process. This leaves open +the question of how this program is started, or about multiple +programs interacting. As detailed in PEP 3143: + + A daemon is not a service + + There is a related concept in many systems, called a “service”. A + service differs from the model in this PEP, in that rather than + having the *current* program continue to run as a daemon process, + a service starts an *additional* process to run in the background, + and the current process communicates with that additional process + via some defined channels. + + The Unix-style daemon model in this PEP can be used, among other + things, to implement the background-process part of a service; but + this PEP does not address the other aspects of setting up and + managing a service. + +A possible starting point for such a “service” model of execution is +in a `message from 2009-01-30`_ to the ``python-ideas`` forum. + +.. _`message from 2009-01-30`: http://mail.python.org/pipermail/python-ideas/2009-January/002606.html + + +Security +======== + +Why is the umask set to 0 by default? +------------------------------------- + +A daemon should not rely on the parent process's umask value, which is +beyond its control and may prevent creating a file with the required +access mode. So when the daemon context opens, the umask is set to an +explicit known value. + +If the conventional value of 0 is too open, consider setting a value +such as 0o022, 0o027, 0o077, or another specific value. Otherwise, +ensure the daemon creates every file with an explicit access mode for +the purpose. + + +File descriptors +================ + +Why does the output stop after opening the daemon context? +---------------------------------------------------------- + +The specified behaviour in `PEP 3143`_ includes the requirement to +detach the process from the controlling terminal (to allow the process +to continue to run as a daemon), and to close all file descriptors not +known to be safe once detached (to ensure any files that continue to +be used are under the control of the daemon process). + +If you want the process to generate output via the system streams +‘sys.stdout’ and ‘sys.stderr’, set the ‘DaemonContext’'s ‘stdout’ +and/or ‘stderr’ options to a file-like object (e.g. the ‘stream’ +attribute of a ‘logging.Handler’ instance). If these objects have file +descriptors, they will be preserved when the daemon context opens. + +How can I preserve a ‘logging’ handler's file descriptor? +--------------------------------------------------------- + +The ‘DaemonContext.open’ method conforms to `PEP 3143`_ by closing all +open file descriptors, but excluding those files specified in the +‘files_preserve’ option. This option is a list of files or file +descriptors. + +The Python standard library ‘logging’ module provides log handlers +that write to streams, including to files via the ‘StreamHandler’ +class and its sub-classes. The documentation (both the online `logging +module documentation`_ and the docstrings for the code) makes no +mention of a way to get at the stream associated with a handler +object. + +However, looking at the source code for ‘StreamHandler’, in Python 2.5 +as ``/usr/lib/python2.5/logging/__init__.py``, shows a ‘stream’ +attribute that is bound to the stream object. The attribute is not +marked private (i.e. it is not named with a leading underscore), so we +can presume it is part of the public API. + +That attribute can then be used to specify that a logging handler's +file descriptor should, when the ‘DaemonContext’ opens, be excluded +from closure:: + + import logging + import daemon + + # any subclass of StreamHandler should provide the ‘stream’ attribute. + lh = logging.handlers.TimedRotatingFileHandler( + "/var/log/foo.log", + # … + ) + + # … do some logging and other activity … + + daemon_context = daemon.DaemonContext() + daemon_context.files_preserve = [lh.stream] + + daemon_context.open() + + # … continue as a daemon process … + +.. _`logging module documentation`: http://docs.python.org/library/logging + + +.. + This is free software: you may copy, modify, and/or distribute this work + under the terms of the Apache License version 2.0 as published by the + Apache Software Foundation. + No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +.. + Local variables: + coding: utf-8 + mode: text + mode: rst + time-stamp-format: "%:y-%02m-%02d" + time-stamp-start: "^:Updated:[ ]+" + time-stamp-end: "$" + time-stamp-line-limit: 20 + End: + vim: fileencoding=utf-8 filetype=rst :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/doc/TODO Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,95 @@ +TODO for ‘python-daemon’ library +################################ + +:Updated: 2015-01-10 + +======= +PENDING +======= + +Tests +===== + +Libraries +========= + +* Evaluate switching to ‘flufl.lock’ library for PID lockfile behaviour + <http://pypi.python.org/pypi/flufl.lock>_. + +Features +======== + +Important +--------- + +Wishlist +-------- + +* Allow specification of a syslog service name to log as (default: + output to stdout and stderr, not syslog). + +Documentation +============= + +Standard library inclusion +========================== + + +==== +DONE +==== + +* Convert to Python 2 and Python 3 compatible code base. + +* Work correctly with current ‘lockfile’ library (0.10 or later). + +* Write full unit tests for every new or changed behaviour at time of + commit. + +* Detect whether started by another process that handles + daemonisation, such as ‘inetd’, and behave appropriately. + +* Detach to new process and session group. + +* Allow specification of working directory (default: '/'). + +* Allow specification of umask (default: 0o000). + +* Drop ‘suid’ and ‘sgid’ privileges if set. + +* Close all open file handles. + +* Re-open stdin, stdout, stderr to user-specified files. + +* Default re-open stdin, stdout, stderr to ‘/dev/null’. + +* Allow specification of a non-root user and group to drop to, if + started as ‘root’ (default: no change of user or group). + +* Implement context manager protocol for daemon context. + +* Allow specification of PID file with its own context manager + (default: no PID file). + +* Full docstrings for functions, classes, and modules. + +* PEP 3143 for adding this library to the Python standard library. + + +.. + This is free software: you may copy, modify, and/or distribute this work + under the terms of the Apache License version 2.0 as published by the + Apache Software Foundation. + No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +.. + Local variables: + coding: utf-8 + mode: text + mode: rst + time-stamp-format: "%:y-%02m-%02d" + time-stamp-start: "^:Updated:[ ]+" + time-stamp-end: "$" + time-stamp-line-limit: 20 + End: + vim: fileencoding=utf-8 filetype=rst :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/doc/hacking.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,180 @@ +Developer's guide +################# + +:Author: Ben Finney <ben+python@benfinney.id.au> +:Updated: 2014-11-28 + + +Project layout +============== + +:: + + ./ Top level of source tree + doc/ Project documentation + bin/ Executable programs + daemon/ Main ‘daemon’ library + test/ Unit tests + + +Code style +========== + +Python +------ + +All Python code should conform to the guidelines in PEP8_. In +particular: + +* Indent each level using 4 spaces (``U+0020 SPACE``), and no TABs + (``U+0008 CHARACTER TABULATION``). + +* Name modules in lower case, ``multiplewordslikethis``. + +* Name classes in title case, ``MultipleWordsLikeThis``. + +* Name functions, instances and other variables in lower case, + ``multiple_words_like_this``. + +* Every module, class, and function has a Python doc string explaining + its purpose and API. + + *Exception*: Functions whose purpose and API are mandated by Python + itself (dunder-named methods) do not need a doc string. + +* Doc strings are written as triple-quoted strings. + + * The text of the doc string is marked up with reStructuredText. + + * The first line is a one-line synopsis of the object. This summary + line appears on the same line as the opening triple-quote, + separated by a single space. + + * Further lines, if needed, are separated from the first by one + blank line. + + * The synopsis is separated by one space from the opening + triple-quote; this causes it to appear four columns past the + beginning of the line. All subsequent lines are indented at least + four columns also. + + * The synopsis is followed by a reStructuredText field list. The + field names are: “param foo” for each parameter (where “foo” is + the parameter name), and “return” for the return value. The field + values describe the purpose of each. + + * The closing triple-quote appears on a separate line. + + Example:: + + def frobnicate(spam, algorithm="dv"): + """ Perform frobnication on ``spam``. + + :param spam: A travortionate (as a sequence of strings). + :param algorithm: The name of the algorithm to use for + frobnicating the travortionate. + :return: The frobnicated travortionate, if it is + non-empty; otherwise None. + + The frobnication is done by the Dietzel-Venkman algorithm, + and optimises for the case where ``spam`` is freebled and + agglutinative. + + """ + spagnify(spam) + # … + +* All ``import`` statements appear at the top of the module. + +* Each ``import`` statement imports a single module, or multiple names + from a single module. + + Example:: + + import sys + import os + from spam import foo, bar, baz + +.. _PEP8: http://www.python.org/dev/peps/pep-0008/ + +Additional style guidelines: + +* All text files (including program code) are encoded in UTF-8. + +* A page break (``U+000C FORM FEED``) whitespace character is used + within a module to break up semantically separate areas of the + module. + +* Editor hints for Emacs and Vim appear in a comment block at the + file's end:: + + + # Local variables: + # coding: utf-8 + # mode: python + # End: + # vim: fileencoding=utf-8 filetype=python : + + +Unit tests +========== + +All code should aim for 100% coverage by unit tests. New code, or +changes to existing code, will only be considered for inclusion in the +development tree when accompanied by corresponding additions or +changes to the unit tests. + +Test-driven development +----------------------- + +Where possible, practice test-driven development to implement program +code. + +* During a development session, maintain a separate window or terminal + with the unit test suite for the project running continuously, or + automatically every few seconds. + +* Any time a test is failing, the only valid change is to make all + tests pass. + +* Develop new interface features (changes to the program unit's + behaviour) only when all current tests pass. + +* Refactor as needed, but only when all tests pass. + + * Refactoring is any change to the code which does not alter its + interface or expected behaviour, such as performance + optimisations, readability improvements, modularisation + improvements etc. + +* Develop new or changed program behaviour by: + + * *First* write a single, specific test case for that new behaviour, + then watch the test fail in the absence of the desired behaviour. + + * Implement the minimum necessary change to satisfy the failing + test. Continue until all tests pass again, then stop making + functional changes. + + * Once all tests (including the new test) pass, consider refactoring + the code and the tests immediately, then ensure all the tests pass + again after any changes. + + * Iterate for each incremental change in interface or behaviour. + +Test-driven development is not absolutely necessary, but is the +simplest, most direct way to generate the kind of program changes +accompanied by unit tests that are necessary for inclusion in the +project. + + +.. + Local variables: + coding: utf-8 + mode: rst + time-stamp-format: "%:y-%02m-%02d" + time-stamp-start: "^:Updated:[ ]+" + time-stamp-end: "$" + time-stamp-line-limit: 20 + End: + vim: fileencoding=utf-8 filetype=rst :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/PKG-INFO Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,38 @@ +Metadata-Version: 1.1 +Name: python-daemon +Version: 2.0.5 +Summary: Library to implement a well-behaved Unix daemon process. +Home-page: https://alioth.debian.org/projects/python-daemon/ +Author: Ben Finney +Author-email: ben+python@benfinney.id.au +License: Apache-2 +Description: This library implements the well-behaved daemon specification of + :pep:`3143`, “Standard daemon process library”. + + A well-behaved Unix daemon process is tricky to get right, but the + required steps are much the same for every daemon program. A + `DaemonContext` instance holds the behaviour and configured + process environment for the program; use the instance as a context + manager to enter a daemon state. + + Simple example of usage:: + + import daemon + + from spam import do_main_program + + with daemon.DaemonContext(): + do_main_program() + + Customisation of the steps to become a daemon is available by + setting options on the `DaemonContext` instance; see the + documentation for that class for each option. +Keywords: daemon,fork,unix +Platform: UNKNOWN +Classifier: Development Status :: 4 - Beta +Classifier: License :: OSI Approved :: Apache Software License +Classifier: Operating System :: POSIX +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Intended Audience :: Developers +Classifier: Topic :: Software Development :: Libraries :: Python Modules
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/SOURCES.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,30 @@ +ChangeLog +LICENSE.ASF-2 +LICENSE.GPL-3 +MANIFEST.in +setup.cfg +setup.py +test_version.py +version.py +daemon/__init__.py +daemon/_metadata.py +daemon/daemon.py +daemon/pidfile.py +daemon/runner.py +doc/CREDITS +doc/FAQ +doc/TODO +doc/hacking.txt +python_daemon.egg-info/PKG-INFO +python_daemon.egg-info/SOURCES.txt +python_daemon.egg-info/dependency_links.txt +python_daemon.egg-info/not-zip-safe +python_daemon.egg-info/requires.txt +python_daemon.egg-info/top_level.txt +python_daemon.egg-info/version_info.json +test/__init__.py +test/scaffold.py +test/test_daemon.py +test/test_metadata.py +test/test_pidfile.py +test/test_runner.py \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/dependency_links.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/not-zip-safe Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/requires.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,3 @@ +setuptools +docutils +lockfile >=0.10
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/top_level.txt Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1 @@ +daemon
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/python_daemon.egg-info/version_info.json Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,6 @@ +{ + "release_date": "2015-02-02", + "version": "2.0.5", + "maintainer": "Ben Finney <ben+python@benfinney.id.au>", + "body": "* Refine compatibility of exceptions for file operations.\n* Specify the text encoding when opening the changelog file.\n" +} \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/setup.cfg Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,11 @@ +[aliases] +distribute = register sdist bdist_wheel upload + +[bdist_wheel] +universal = true + +[egg_info] +tag_svn_revision = 0 +tag_date = 0 +tag_build = +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/setup.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,106 @@ +# -*- coding: utf-8 -*- + +# setup.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# Copyright © 2008 Robert Niederreiter, Jens Klein +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; version 3 of that license or any later version. +# No warranty expressed or implied. See the file ‘LICENSE.GPL-3’ for details. + +""" Distribution setup for ‘python-daemon’ library. """ + +from __future__ import (absolute_import, unicode_literals) + +import sys +import os +import os.path +import pydoc +import distutils.util + +from setuptools import (setup, find_packages) + +import version + + +fromlist_expects_type = str +if sys.version_info < (3, 0): + fromlist_expects_type = bytes + + +main_module_name = 'daemon' +main_module_fromlist = list(map(fromlist_expects_type, [ + '_metadata'])) +main_module = __import__( + main_module_name, + level=0, fromlist=main_module_fromlist) +metadata = main_module._metadata + +(synopsis, long_description) = pydoc.splitdoc(pydoc.getdoc(main_module)) + +version_info = metadata.get_distribution_version_info() +version_string = version_info['version'] + +(maintainer_name, maintainer_email) = metadata.parse_person_field( + version_info['maintainer']) + + +setup( + name=metadata.distribution_name, + version=version_string, + packages=find_packages(exclude=["test"]), + cmdclass={ + "write_version_info": version.WriteVersionInfoCommand, + "egg_info": version.EggInfoCommand, + }, + + # Setuptools metadata. + maintainer=maintainer_name, + maintainer_email=maintainer_email, + zip_safe=False, + setup_requires=[ + "docutils", + ], + test_suite="unittest2.collector", + tests_require=[ + "unittest2 >=0.6", + "testtools", + "testscenarios >=0.4", + "mock >=1.0", + "docutils", + ], + install_requires=[ + "setuptools", + "docutils", + "lockfile >=0.10", + ], + + # PyPI metadata. + author=metadata.author_name, + author_email=metadata.author_email, + description=synopsis, + license=metadata.license, + keywords="daemon fork unix".split(), + url=metadata.url, + long_description=long_description, + classifiers=[ + # Reference: http://pypi.python.org/pypi?%3Aaction=list_classifiers + "Development Status :: 4 - Beta", + "License :: OSI Approved :: Apache Software License", + "Operating System :: POSIX", + "Programming Language :: Python :: 2.7", + "Programming Language :: Python :: 3", + "Intended Audience :: Developers", + "Topic :: Software Development :: Libraries :: Python Modules", + ], + ) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/__init__.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,23 @@ +# -*- coding: utf-8 -*- +# +# test/__init__.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Unit test suite for ‘daemon’ package. + """ + +from __future__ import (absolute_import, unicode_literals) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/scaffold.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,322 @@ +# -*- coding: utf-8 -*- + +# test/scaffold.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2007–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Scaffolding for unit test modules. + """ + +from __future__ import (absolute_import, unicode_literals) + +import unittest +import doctest +import logging +import os +import sys +import operator +import textwrap +from copy import deepcopy +import functools + +try: + # Python 2 has both ‘str’ (bytes) and ‘unicode’ (text). + basestring = basestring + unicode = unicode +except NameError: + # Python 3 names the Unicode data type ‘str’. + basestring = str + unicode = str + +import testscenarios +import testtools.testcase + + +test_dir = os.path.dirname(os.path.abspath(__file__)) +parent_dir = os.path.dirname(test_dir) +if not test_dir in sys.path: + sys.path.insert(1, test_dir) +if not parent_dir in sys.path: + sys.path.insert(1, parent_dir) + +# Disable all but the most critical logging messages. +logging.disable(logging.CRITICAL) + + +def get_function_signature(func): + """ Get the function signature as a mapping of attributes. + + :param func: The function object to interrogate. + :return: A mapping of the components of a function signature. + + The signature is constructed as a mapping: + + * 'name': The function's defined name. + * 'arg_count': The number of arguments expected by the function. + * 'arg_names': A sequence of the argument names, as strings. + * 'arg_defaults': A sequence of the default values for the arguments. + * 'va_args': The name bound to remaining positional arguments. + * 'va_kw_args': The name bound to remaining keyword arguments. + + """ + try: + # Python 3 function attributes. + func_code = func.__code__ + func_defaults = func.__defaults__ + except AttributeError: + # Python 2 function attributes. + func_code = func.func_code + func_defaults = func.func_defaults + + arg_count = func_code.co_argcount + arg_names = func_code.co_varnames[:arg_count] + + arg_defaults = {} + if func_defaults is not None: + arg_defaults = dict( + (name, value) + for (name, value) in + zip(arg_names[::-1], func_defaults[::-1])) + + signature = { + 'name': func.__name__, + 'arg_count': arg_count, + 'arg_names': arg_names, + 'arg_defaults': arg_defaults, + } + + non_pos_names = list(func_code.co_varnames[arg_count:]) + COLLECTS_ARBITRARY_POSITIONAL_ARGS = 0x04 + if func_code.co_flags & COLLECTS_ARBITRARY_POSITIONAL_ARGS: + signature['var_args'] = non_pos_names.pop(0) + COLLECTS_ARBITRARY_KEYWORD_ARGS = 0x08 + if func_code.co_flags & COLLECTS_ARBITRARY_KEYWORD_ARGS: + signature['var_kw_args'] = non_pos_names.pop(0) + + return signature + + +def format_function_signature(func): + """ Format the function signature as printable text. + + :param func: The function object to interrogate. + :return: A formatted text representation of the function signature. + + The signature is rendered a text; for example:: + + foo(spam, eggs, ham=True, beans=None, *args, **kwargs) + + """ + signature = get_function_signature(func) + + args_text = [] + for arg_name in signature['arg_names']: + if arg_name in signature['arg_defaults']: + arg_text = "{name}={value!r}".format( + name=arg_name, value=signature['arg_defaults'][arg_name]) + else: + arg_text = "{name}".format( + name=arg_name) + args_text.append(arg_text) + if 'var_args' in signature: + args_text.append("*{var_args}".format(signature)) + if 'var_kw_args' in signature: + args_text.append("**{var_kw_args}".format(signature)) + signature_args_text = ", ".join(args_text) + + func_name = signature['name'] + signature_text = "{name}({args})".format( + name=func_name, args=signature_args_text) + + return signature_text + + +class TestCase(testtools.testcase.TestCase): + """ Test case behaviour. """ + + def failUnlessOutputCheckerMatch(self, want, got, msg=None): + """ Fail unless the specified string matches the expected. + + :param want: The desired output pattern. + :param got: The actual text to match. + :param msg: A message to prefix on the failure message. + :return: ``None``. + :raises self.failureException: If the text does not match. + + Fail the test unless ``want`` matches ``got``, as determined by + a ``doctest.OutputChecker`` instance. This is not an equality + check, but a pattern match according to the ``OutputChecker`` + rules. + + """ + checker = doctest.OutputChecker() + want = textwrap.dedent(want) + source = "" + example = doctest.Example(source, want) + got = textwrap.dedent(got) + checker_optionflags = functools.reduce(operator.or_, [ + doctest.ELLIPSIS, + ]) + if not checker.check_output(want, got, checker_optionflags): + if msg is None: + diff = checker.output_difference( + example, got, checker_optionflags) + msg = "\n".join([ + "Output received did not match expected output", + "{diff}", + ]).format( + diff=diff) + raise self.failureException(msg) + + assertOutputCheckerMatch = failUnlessOutputCheckerMatch + + def failUnlessFunctionInTraceback(self, traceback, function, msg=None): + """ Fail if the function is not in the traceback. + + :param traceback: The traceback object to interrogate. + :param function: The function object to match. + :param msg: A message to prefix on the failure message. + :return: ``None``. + + :raises self.failureException: If the function is not in the + traceback. + + Fail the test if the function ``function`` is not at any of the + levels in the traceback object ``traceback``. + + """ + func_in_traceback = False + expected_code = function.func_code + current_traceback = traceback + while current_traceback is not None: + if expected_code is current_traceback.tb_frame.f_code: + func_in_traceback = True + break + current_traceback = current_traceback.tb_next + + if not func_in_traceback: + if msg is None: + msg = ( + "Traceback did not lead to original function" + " {function}" + ).format( + function=function) + raise self.failureException(msg) + + assertFunctionInTraceback = failUnlessFunctionInTraceback + + def failUnlessFunctionSignatureMatch(self, first, second, msg=None): + """ Fail if the function signatures do not match. + + :param first: The first function to compare. + :param second: The second function to compare. + :param msg: A message to prefix to the failure message. + :return: ``None``. + + :raises self.failureException: If the function signatures do + not match. + + Fail the test if the function signature does not match between + the ``first`` function and the ``second`` function. + + The function signature includes: + + * function name, + + * count of named parameters, + + * sequence of named parameters, + + * default values of named parameters, + + * collector for arbitrary positional arguments, + + * collector for arbitrary keyword arguments. + + """ + first_signature = get_function_signature(first) + second_signature = get_function_signature(second) + + if first_signature != second_signature: + if msg is None: + first_signature_text = format_function_signature(first) + second_signature_text = format_function_signature(second) + msg = (textwrap.dedent("""\ + Function signatures do not match: + {first!r} != {second!r} + Expected: + {first_text} + Got: + {second_text}""") + ).format( + first=first_signature, + first_text=first_signature_text, + second=second_signature, + second_text=second_signature_text, + ) + raise self.failureException(msg) + + assertFunctionSignatureMatch = failUnlessFunctionSignatureMatch + + +class TestCaseWithScenarios(testscenarios.WithScenarios, TestCase): + """ Test cases run per scenario. """ + + +class Exception_TestCase(TestCaseWithScenarios): + """ Test cases for exception classes. """ + + def test_exception_instance(self): + """ Exception instance should be created. """ + self.assertIsNot(self.instance, None) + + def test_exception_types(self): + """ Exception instance should match expected types. """ + for match_type in self.types: + self.assertIsInstance(self.instance, match_type) + + +def make_exception_scenarios(scenarios): + """ Make test scenarios for exception classes. + + :param scenarios: Sequence of scenarios. + :return: List of scenarios with additional mapping entries. + + Use this with `testscenarios` to adapt `Exception_TestCase`_ for + any exceptions that need testing. + + Each scenario is a tuple (`name`, `map`) where `map` is a mapping + of attributes to be applied to each test case. Attributes map must + contain items for: + + :key exc_type: + The exception type to be tested. + :key min_args: + The minimum argument count for the exception instance + initialiser. + :key types: + Sequence of types that should be superclasses of each + instance of the exception type. + + """ + updated_scenarios = deepcopy(scenarios) + for (name, scenario) in updated_scenarios: + args = (None,) * scenario['min_args'] + scenario['args'] = args + instance = scenario['exc_type'](*args) + scenario['instance'] = instance + + return updated_scenarios + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/test_daemon.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1744 @@ +# -*- coding: utf-8 -*- +# +# test/test_daemon.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Unit test for ‘daemon’ module. + """ + +from __future__ import (absolute_import, unicode_literals) + +import os +import sys +import tempfile +import resource +import errno +import signal +import socket +from types import ModuleType +import collections +import functools +try: + # Standard library of Python 2.7 and later. + from io import StringIO +except ImportError: + # Standard library of Python 2.6 and earlier. + from StringIO import StringIO + +import mock + +from . import scaffold +from .scaffold import (basestring, unicode) +from .test_pidfile import ( + FakeFileDescriptorStringIO, + setup_pidfile_fixtures, + ) + +import daemon + + +class ModuleExceptions_TestCase(scaffold.Exception_TestCase): + """ Test cases for module exception classes. """ + + scenarios = scaffold.make_exception_scenarios([ + ('daemon.daemon.DaemonError', dict( + exc_type = daemon.daemon.DaemonError, + min_args = 1, + types = [Exception], + )), + ('daemon.daemon.DaemonOSEnvironmentError', dict( + exc_type = daemon.daemon.DaemonOSEnvironmentError, + min_args = 1, + types = [daemon.daemon.DaemonError, OSError], + )), + ('daemon.daemon.DaemonProcessDetachError', dict( + exc_type = daemon.daemon.DaemonProcessDetachError, + min_args = 1, + types = [daemon.daemon.DaemonError, OSError], + )), + ]) + + +def setup_daemon_context_fixtures(testcase): + """ Set up common test fixtures for DaemonContext test case. + + :param testcase: A ``TestCase`` instance to decorate. + :return: ``None``. + + Decorate the `testcase` with fixtures for tests involving + `DaemonContext`. + + """ + setup_streams_fixtures(testcase) + + setup_pidfile_fixtures(testcase) + + testcase.fake_pidfile_path = tempfile.mktemp() + testcase.mock_pidlockfile = mock.MagicMock() + testcase.mock_pidlockfile.path = testcase.fake_pidfile_path + + testcase.daemon_context_args = dict( + stdin=testcase.stream_files_by_name['stdin'], + stdout=testcase.stream_files_by_name['stdout'], + stderr=testcase.stream_files_by_name['stderr'], + ) + testcase.test_instance = daemon.DaemonContext( + **testcase.daemon_context_args) + +fake_default_signal_map = object() + +@mock.patch.object( + daemon.daemon, "is_detach_process_context_required", + new=(lambda: True)) +@mock.patch.object( + daemon.daemon, "make_default_signal_map", + new=(lambda: fake_default_signal_map)) +@mock.patch.object(os, "setgid", new=(lambda x: object())) +@mock.patch.object(os, "setuid", new=(lambda x: object())) +class DaemonContext_BaseTestCase(scaffold.TestCase): + """ Base class for DaemonContext test case classes. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_BaseTestCase, self).setUp() + + setup_daemon_context_fixtures(self) + + +class DaemonContext_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext class. """ + + def test_instantiate(self): + """ New instance of DaemonContext should be created. """ + self.assertIsInstance( + self.test_instance, daemon.daemon.DaemonContext) + + def test_minimum_zero_arguments(self): + """ Initialiser should not require any arguments. """ + instance = daemon.daemon.DaemonContext() + self.assertIsNot(instance, None) + + def test_has_specified_chroot_directory(self): + """ Should have specified chroot_directory option. """ + args = dict( + chroot_directory=object(), + ) + expected_directory = args['chroot_directory'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_directory, instance.chroot_directory) + + def test_has_specified_working_directory(self): + """ Should have specified working_directory option. """ + args = dict( + working_directory=object(), + ) + expected_directory = args['working_directory'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_directory, instance.working_directory) + + def test_has_default_working_directory(self): + """ Should have default working_directory option. """ + args = dict() + expected_directory = "/" + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_directory, instance.working_directory) + + def test_has_specified_creation_mask(self): + """ Should have specified umask option. """ + args = dict( + umask=object(), + ) + expected_mask = args['umask'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_mask, instance.umask) + + def test_has_default_creation_mask(self): + """ Should have default umask option. """ + args = dict() + expected_mask = 0 + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_mask, instance.umask) + + def test_has_specified_uid(self): + """ Should have specified uid option. """ + args = dict( + uid=object(), + ) + expected_id = args['uid'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_id, instance.uid) + + def test_has_derived_uid(self): + """ Should have uid option derived from process. """ + args = dict() + expected_id = os.getuid() + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_id, instance.uid) + + def test_has_specified_gid(self): + """ Should have specified gid option. """ + args = dict( + gid=object(), + ) + expected_id = args['gid'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_id, instance.gid) + + def test_has_derived_gid(self): + """ Should have gid option derived from process. """ + args = dict() + expected_id = os.getgid() + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_id, instance.gid) + + def test_has_specified_detach_process(self): + """ Should have specified detach_process option. """ + args = dict( + detach_process=object(), + ) + expected_value = args['detach_process'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_value, instance.detach_process) + + def test_has_derived_detach_process(self): + """ Should have detach_process option derived from environment. """ + args = dict() + func = daemon.daemon.is_detach_process_context_required + expected_value = func() + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_value, instance.detach_process) + + def test_has_specified_files_preserve(self): + """ Should have specified files_preserve option. """ + args = dict( + files_preserve=object(), + ) + expected_files_preserve = args['files_preserve'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_files_preserve, instance.files_preserve) + + def test_has_specified_pidfile(self): + """ Should have the specified pidfile. """ + args = dict( + pidfile=object(), + ) + expected_pidfile = args['pidfile'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_pidfile, instance.pidfile) + + def test_has_specified_stdin(self): + """ Should have specified stdin option. """ + args = dict( + stdin=object(), + ) + expected_file = args['stdin'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_file, instance.stdin) + + def test_has_specified_stdout(self): + """ Should have specified stdout option. """ + args = dict( + stdout=object(), + ) + expected_file = args['stdout'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_file, instance.stdout) + + def test_has_specified_stderr(self): + """ Should have specified stderr option. """ + args = dict( + stderr=object(), + ) + expected_file = args['stderr'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_file, instance.stderr) + + def test_has_specified_signal_map(self): + """ Should have specified signal_map option. """ + args = dict( + signal_map=object(), + ) + expected_signal_map = args['signal_map'] + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_signal_map, instance.signal_map) + + def test_has_derived_signal_map(self): + """ Should have signal_map option derived from system. """ + args = dict() + expected_signal_map = daemon.daemon.make_default_signal_map() + instance = daemon.daemon.DaemonContext(**args) + self.assertEqual(expected_signal_map, instance.signal_map) + + +class DaemonContext_is_open_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.is_open property. """ + + def test_begin_false(self): + """ Initial value of is_open should be False. """ + instance = self.test_instance + self.assertEqual(False, instance.is_open) + + def test_write_fails(self): + """ Writing to is_open should fail. """ + instance = self.test_instance + self.assertRaises( + AttributeError, + setattr, instance, 'is_open', object()) + + +class DaemonContext_open_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.open method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_open_TestCase, self).setUp() + + self.test_instance._is_open = False + + self.mock_module_daemon = mock.MagicMock() + daemon_func_patchers = dict( + (func_name, mock.patch.object( + daemon.daemon, func_name)) + for func_name in [ + "detach_process_context", + "change_working_directory", + "change_root_directory", + "change_file_creation_mask", + "change_process_owner", + "prevent_core_dump", + "close_all_open_files", + "redirect_stream", + "set_signal_handlers", + "register_atexit_function", + ]) + for (func_name, patcher) in daemon_func_patchers.items(): + mock_func = patcher.start() + self.addCleanup(patcher.stop) + self.mock_module_daemon.attach_mock(mock_func, func_name) + + self.mock_module_daemon.attach_mock(mock.Mock(), 'DaemonContext') + + self.test_files_preserve_fds = object() + self.test_signal_handler_map = object() + daemoncontext_method_return_values = { + '_get_exclude_file_descriptors': + self.test_files_preserve_fds, + '_make_signal_handler_map': + self.test_signal_handler_map, + } + daemoncontext_func_patchers = dict( + (func_name, mock.patch.object( + daemon.daemon.DaemonContext, + func_name, + return_value=return_value)) + for (func_name, return_value) in + daemoncontext_method_return_values.items()) + for (func_name, patcher) in daemoncontext_func_patchers.items(): + mock_func = patcher.start() + self.addCleanup(patcher.stop) + self.mock_module_daemon.DaemonContext.attach_mock( + mock_func, func_name) + + def test_performs_steps_in_expected_sequence(self): + """ Should perform daemonisation steps in expected sequence. """ + instance = self.test_instance + instance.chroot_directory = object() + instance.detach_process = True + instance.pidfile = self.mock_pidlockfile + self.mock_module_daemon.attach_mock( + self.mock_pidlockfile, 'pidlockfile') + expected_calls = [ + mock.call.change_root_directory(mock.ANY), + mock.call.prevent_core_dump(), + mock.call.change_file_creation_mask(mock.ANY), + mock.call.change_working_directory(mock.ANY), + mock.call.change_process_owner(mock.ANY, mock.ANY), + mock.call.detach_process_context(), + mock.call.DaemonContext._make_signal_handler_map(), + mock.call.set_signal_handlers(mock.ANY), + mock.call.DaemonContext._get_exclude_file_descriptors(), + mock.call.close_all_open_files(exclude=mock.ANY), + mock.call.redirect_stream(mock.ANY, mock.ANY), + mock.call.redirect_stream(mock.ANY, mock.ANY), + mock.call.redirect_stream(mock.ANY, mock.ANY), + mock.call.pidlockfile.__enter__(), + mock.call.register_atexit_function(mock.ANY), + ] + instance.open() + self.mock_module_daemon.assert_has_calls(expected_calls) + + def test_returns_immediately_if_is_open(self): + """ Should return immediately if is_open property is true. """ + instance = self.test_instance + instance._is_open = True + instance.open() + self.assertEqual(0, len(self.mock_module_daemon.mock_calls)) + + def test_changes_root_directory_to_chroot_directory(self): + """ Should change root directory to `chroot_directory` option. """ + instance = self.test_instance + chroot_directory = object() + instance.chroot_directory = chroot_directory + instance.open() + self.mock_module_daemon.change_root_directory.assert_called_with( + chroot_directory) + + def test_omits_chroot_if_no_chroot_directory(self): + """ Should omit changing root directory if no `chroot_directory`. """ + instance = self.test_instance + instance.chroot_directory = None + instance.open() + self.assertFalse(self.mock_module_daemon.change_root_directory.called) + + def test_prevents_core_dump(self): + """ Should request prevention of core dumps. """ + instance = self.test_instance + instance.open() + self.mock_module_daemon.prevent_core_dump.assert_called_with() + + def test_omits_prevent_core_dump_if_prevent_core_false(self): + """ Should omit preventing core dumps if `prevent_core` is false. """ + instance = self.test_instance + instance.prevent_core = False + instance.open() + self.assertFalse(self.mock_module_daemon.prevent_core_dump.called) + + def test_closes_open_files(self): + """ Should close all open files, excluding `files_preserve`. """ + instance = self.test_instance + expected_exclude = self.test_files_preserve_fds + instance.open() + self.mock_module_daemon.close_all_open_files.assert_called_with( + exclude=expected_exclude) + + def test_changes_directory_to_working_directory(self): + """ Should change current directory to `working_directory` option. """ + instance = self.test_instance + working_directory = object() + instance.working_directory = working_directory + instance.open() + self.mock_module_daemon.change_working_directory.assert_called_with( + working_directory) + + def test_changes_creation_mask_to_umask(self): + """ Should change file creation mask to `umask` option. """ + instance = self.test_instance + umask = object() + instance.umask = umask + instance.open() + self.mock_module_daemon.change_file_creation_mask.assert_called_with( + umask) + + def test_changes_owner_to_specified_uid_and_gid(self): + """ Should change process UID and GID to `uid` and `gid` options. """ + instance = self.test_instance + uid = object() + gid = object() + instance.uid = uid + instance.gid = gid + instance.open() + self.mock_module_daemon.change_process_owner.assert_called_with( + uid, gid) + + def test_detaches_process_context(self): + """ Should request detach of process context. """ + instance = self.test_instance + instance.open() + self.mock_module_daemon.detach_process_context.assert_called_with() + + def test_omits_process_detach_if_not_required(self): + """ Should omit detach of process context if not required. """ + instance = self.test_instance + instance.detach_process = False + instance.open() + self.assertFalse(self.mock_module_daemon.detach_process_context.called) + + def test_sets_signal_handlers_from_signal_map(self): + """ Should set signal handlers according to `signal_map`. """ + instance = self.test_instance + instance.signal_map = object() + expected_signal_handler_map = self.test_signal_handler_map + instance.open() + self.mock_module_daemon.set_signal_handlers.assert_called_with( + expected_signal_handler_map) + + def test_redirects_standard_streams(self): + """ Should request redirection of standard stream files. """ + instance = self.test_instance + (system_stdin, system_stdout, system_stderr) = ( + sys.stdin, sys.stdout, sys.stderr) + (target_stdin, target_stdout, target_stderr) = ( + self.stream_files_by_name[name] + for name in ['stdin', 'stdout', 'stderr']) + expected_calls = [ + mock.call(system_stdin, target_stdin), + mock.call(system_stdout, target_stdout), + mock.call(system_stderr, target_stderr), + ] + instance.open() + self.mock_module_daemon.redirect_stream.assert_has_calls( + expected_calls, any_order=True) + + def test_enters_pidfile_context(self): + """ Should enter the PID file context manager. """ + instance = self.test_instance + instance.pidfile = self.mock_pidlockfile + instance.open() + self.mock_pidlockfile.__enter__.assert_called_with() + + def test_sets_is_open_true(self): + """ Should set the `is_open` property to True. """ + instance = self.test_instance + instance.open() + self.assertEqual(True, instance.is_open) + + def test_registers_close_method_for_atexit(self): + """ Should register the `close` method for atexit processing. """ + instance = self.test_instance + close_method = instance.close + instance.open() + self.mock_module_daemon.register_atexit_function.assert_called_with( + close_method) + + +class DaemonContext_close_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.close method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_close_TestCase, self).setUp() + + self.test_instance._is_open = True + + def test_returns_immediately_if_not_is_open(self): + """ Should return immediately if is_open property is false. """ + instance = self.test_instance + instance._is_open = False + instance.pidfile = object() + instance.close() + self.assertFalse(self.mock_pidlockfile.__exit__.called) + + def test_exits_pidfile_context(self): + """ Should exit the PID file context manager. """ + instance = self.test_instance + instance.pidfile = self.mock_pidlockfile + instance.close() + self.mock_pidlockfile.__exit__.assert_called_with(None, None, None) + + def test_returns_none(self): + """ Should return None. """ + instance = self.test_instance + expected_result = None + result = instance.close() + self.assertIs(result, expected_result) + + def test_sets_is_open_false(self): + """ Should set the `is_open` property to False. """ + instance = self.test_instance + instance.close() + self.assertEqual(False, instance.is_open) + + +@mock.patch.object(daemon.daemon.DaemonContext, "open") +class DaemonContext_context_manager_enter_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.__enter__ method. """ + + def test_opens_daemon_context(self, mock_func_daemoncontext_open): + """ Should open the DaemonContext. """ + instance = self.test_instance + instance.__enter__() + mock_func_daemoncontext_open.assert_called_with() + + def test_returns_self_instance(self, mock_func_daemoncontext_open): + """ Should return DaemonContext instance. """ + instance = self.test_instance + expected_result = instance + result = instance.__enter__() + self.assertIs(result, expected_result) + + +@mock.patch.object(daemon.daemon.DaemonContext, "close") +class DaemonContext_context_manager_exit_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.__exit__ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_context_manager_exit_TestCase, self).setUp() + + self.test_args = dict( + exc_type=object(), + exc_value=object(), + traceback=object(), + ) + + def test_closes_daemon_context(self, mock_func_daemoncontext_close): + """ Should close the DaemonContext. """ + instance = self.test_instance + args = self.test_args + instance.__exit__(**args) + mock_func_daemoncontext_close.assert_called_with() + + def test_returns_none(self, mock_func_daemoncontext_close): + """ Should return None, indicating exception was not handled. """ + instance = self.test_instance + args = self.test_args + expected_result = None + result = instance.__exit__(**args) + self.assertIs(result, expected_result) + + +class DaemonContext_terminate_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext.terminate method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_terminate_TestCase, self).setUp() + + self.test_signal = signal.SIGTERM + self.test_frame = None + self.test_args = (self.test_signal, self.test_frame) + + def test_raises_system_exit(self): + """ Should raise SystemExit. """ + instance = self.test_instance + args = self.test_args + expected_exception = SystemExit + self.assertRaises( + expected_exception, + instance.terminate, *args) + + def test_exception_message_contains_signal_number(self): + """ Should raise exception with a message containing signal number. """ + instance = self.test_instance + args = self.test_args + signal_number = self.test_signal + expected_exception = SystemExit + exc = self.assertRaises( + expected_exception, + instance.terminate, *args) + self.assertIn(unicode(signal_number), unicode(exc)) + + +class DaemonContext_get_exclude_file_descriptors_TestCase( + DaemonContext_BaseTestCase): + """ Test cases for DaemonContext._get_exclude_file_descriptors function. """ + + def setUp(self): + """ Set up test fixtures. """ + super( + DaemonContext_get_exclude_file_descriptors_TestCase, + self).setUp() + + self.test_files = { + 2: FakeFileDescriptorStringIO(), + 5: 5, + 11: FakeFileDescriptorStringIO(), + 17: None, + 23: FakeFileDescriptorStringIO(), + 37: 37, + 42: FakeFileDescriptorStringIO(), + } + for (fileno, item) in self.test_files.items(): + if hasattr(item, '_fileno'): + item._fileno = fileno + self.test_file_descriptors = set( + fd for (fd, item) in self.test_files.items() + if item is not None) + self.test_file_descriptors.update( + self.stream_files_by_name[name].fileno() + for name in ['stdin', 'stdout', 'stderr'] + ) + + def test_returns_expected_file_descriptors(self): + """ Should return expected set of file descriptors. """ + instance = self.test_instance + instance.files_preserve = list(self.test_files.values()) + expected_result = self.test_file_descriptors + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + def test_returns_stream_redirects_if_no_files_preserve(self): + """ Should return only stream redirects if no files_preserve. """ + instance = self.test_instance + instance.files_preserve = None + expected_result = set( + stream.fileno() + for stream in self.stream_files_by_name.values()) + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + def test_returns_empty_set_if_no_files(self): + """ Should return empty set if no file options. """ + instance = self.test_instance + for name in ['files_preserve', 'stdin', 'stdout', 'stderr']: + setattr(instance, name, None) + expected_result = set() + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + def test_omits_non_file_streams(self): + """ Should omit non-file stream attributes. """ + instance = self.test_instance + instance.files_preserve = list(self.test_files.values()) + stream_files = self.stream_files_by_name + expected_result = self.test_file_descriptors.copy() + for (pseudo_stream_name, pseudo_stream) in stream_files.items(): + test_non_file_object = object() + setattr(instance, pseudo_stream_name, test_non_file_object) + stream_fd = pseudo_stream.fileno() + expected_result.discard(stream_fd) + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + def test_includes_verbatim_streams_without_file_descriptor(self): + """ Should include verbatim any stream without a file descriptor. """ + instance = self.test_instance + instance.files_preserve = list(self.test_files.values()) + stream_files = self.stream_files_by_name + mock_fileno_method = mock.MagicMock( + spec=sys.__stdin__.fileno, + side_effect=ValueError) + expected_result = self.test_file_descriptors.copy() + for (pseudo_stream_name, pseudo_stream) in stream_files.items(): + test_non_fd_stream = StringIO() + if not hasattr(test_non_fd_stream, 'fileno'): + # Python < 3 StringIO doesn't have ‘fileno’ at all. + # Add a method which raises an exception. + test_non_fd_stream.fileno = mock_fileno_method + setattr(instance, pseudo_stream_name, test_non_fd_stream) + stream_fd = pseudo_stream.fileno() + expected_result.discard(stream_fd) + expected_result.add(test_non_fd_stream) + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + def test_omits_none_streams(self): + """ Should omit any stream attribute which is None. """ + instance = self.test_instance + instance.files_preserve = list(self.test_files.values()) + stream_files = self.stream_files_by_name + expected_result = self.test_file_descriptors.copy() + for (pseudo_stream_name, pseudo_stream) in stream_files.items(): + setattr(instance, pseudo_stream_name, None) + stream_fd = pseudo_stream.fileno() + expected_result.discard(stream_fd) + result = instance._get_exclude_file_descriptors() + self.assertEqual(expected_result, result) + + +class DaemonContext_make_signal_handler_TestCase(DaemonContext_BaseTestCase): + """ Test cases for DaemonContext._make_signal_handler function. """ + + def test_returns_ignore_for_none(self): + """ Should return SIG_IGN when None handler specified. """ + instance = self.test_instance + target = None + expected_result = signal.SIG_IGN + result = instance._make_signal_handler(target) + self.assertEqual(expected_result, result) + + def test_returns_method_for_name(self): + """ Should return method of DaemonContext when name specified. """ + instance = self.test_instance + target = 'terminate' + expected_result = instance.terminate + result = instance._make_signal_handler(target) + self.assertEqual(expected_result, result) + + def test_raises_error_for_unknown_name(self): + """ Should raise AttributeError for unknown method name. """ + instance = self.test_instance + target = 'b0gUs' + expected_error = AttributeError + self.assertRaises( + expected_error, + instance._make_signal_handler, target) + + def test_returns_object_for_object(self): + """ Should return same object for any other object. """ + instance = self.test_instance + target = object() + expected_result = target + result = instance._make_signal_handler(target) + self.assertEqual(expected_result, result) + + +class DaemonContext_make_signal_handler_map_TestCase( + DaemonContext_BaseTestCase): + """ Test cases for DaemonContext._make_signal_handler_map function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonContext_make_signal_handler_map_TestCase, self).setUp() + + self.test_instance.signal_map = { + object(): object(), + object(): object(), + object(): object(), + } + + self.test_signal_handlers = dict( + (key, object()) + for key in self.test_instance.signal_map.values()) + self.test_signal_handler_map = dict( + (key, self.test_signal_handlers[target]) + for (key, target) in self.test_instance.signal_map.items()) + + def fake_make_signal_handler(target): + return self.test_signal_handlers[target] + + func_patcher_make_signal_handler = mock.patch.object( + daemon.daemon.DaemonContext, "_make_signal_handler", + side_effect=fake_make_signal_handler) + self.mock_func_make_signal_handler = ( + func_patcher_make_signal_handler.start()) + self.addCleanup(func_patcher_make_signal_handler.stop) + + def test_returns_constructed_signal_handler_items(self): + """ Should return items as constructed via make_signal_handler. """ + instance = self.test_instance + expected_result = self.test_signal_handler_map + result = instance._make_signal_handler_map() + self.assertEqual(expected_result, result) + + +try: + FileNotFoundError +except NameError: + # Python 2 uses IOError. + FileNotFoundError = functools.partial(IOError, errno.ENOENT) + + +@mock.patch.object(os, "chdir") +class change_working_directory_TestCase(scaffold.TestCase): + """ Test cases for change_working_directory function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(change_working_directory_TestCase, self).setUp() + + self.test_directory = object() + self.test_args = dict( + directory=self.test_directory, + ) + + def test_changes_working_directory_to_specified_directory( + self, + mock_func_os_chdir): + """ Should change working directory to specified directory. """ + args = self.test_args + directory = self.test_directory + daemon.daemon.change_working_directory(**args) + mock_func_os_chdir.assert_called_with(directory) + + def test_raises_daemon_error_on_os_error( + self, + mock_func_os_chdir): + """ Should raise a DaemonError on receiving an IOError. """ + args = self.test_args + test_error = FileNotFoundError("No such directory") + mock_func_os_chdir.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_working_directory, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_error_message_contains_original_error_message( + self, + mock_func_os_chdir): + """ Should raise a DaemonError with original message. """ + args = self.test_args + test_error = FileNotFoundError("No such directory") + mock_func_os_chdir.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_working_directory, **args) + self.assertIn(unicode(test_error), unicode(exc)) + + +@mock.patch.object(os, "chroot") +@mock.patch.object(os, "chdir") +class change_root_directory_TestCase(scaffold.TestCase): + """ Test cases for change_root_directory function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(change_root_directory_TestCase, self).setUp() + + self.test_directory = object() + self.test_args = dict( + directory=self.test_directory, + ) + + def test_changes_working_directory_to_specified_directory( + self, + mock_func_os_chdir, mock_func_os_chroot): + """ Should change working directory to specified directory. """ + args = self.test_args + directory = self.test_directory + daemon.daemon.change_root_directory(**args) + mock_func_os_chdir.assert_called_with(directory) + + def test_changes_root_directory_to_specified_directory( + self, + mock_func_os_chdir, mock_func_os_chroot): + """ Should change root directory to specified directory. """ + args = self.test_args + directory = self.test_directory + daemon.daemon.change_root_directory(**args) + mock_func_os_chroot.assert_called_with(directory) + + def test_raises_daemon_error_on_os_error_from_chdir( + self, + mock_func_os_chdir, mock_func_os_chroot): + """ Should raise a DaemonError on receiving an IOError from chdir. """ + args = self.test_args + test_error = FileNotFoundError("No such directory") + mock_func_os_chdir.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_root_directory, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_raises_daemon_error_on_os_error_from_chroot( + self, + mock_func_os_chdir, mock_func_os_chroot): + """ Should raise a DaemonError on receiving an OSError from chroot. """ + args = self.test_args + test_error = OSError(errno.EPERM, "No chroot for you!") + mock_func_os_chroot.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_root_directory, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_error_message_contains_original_error_message( + self, + mock_func_os_chdir, mock_func_os_chroot): + """ Should raise a DaemonError with original message. """ + args = self.test_args + test_error = FileNotFoundError("No such directory") + mock_func_os_chdir.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_root_directory, **args) + self.assertIn(unicode(test_error), unicode(exc)) + + +@mock.patch.object(os, "umask") +class change_file_creation_mask_TestCase(scaffold.TestCase): + """ Test cases for change_file_creation_mask function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(change_file_creation_mask_TestCase, self).setUp() + + self.test_mask = object() + self.test_args = dict( + mask=self.test_mask, + ) + + def test_changes_umask_to_specified_mask(self, mock_func_os_umask): + """ Should change working directory to specified directory. """ + args = self.test_args + mask = self.test_mask + daemon.daemon.change_file_creation_mask(**args) + mock_func_os_umask.assert_called_with(mask) + + def test_raises_daemon_error_on_os_error_from_chdir( + self, + mock_func_os_umask): + """ Should raise a DaemonError on receiving an OSError from umask. """ + args = self.test_args + test_error = OSError(errno.EINVAL, "Whatchoo talkin' 'bout?") + mock_func_os_umask.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_file_creation_mask, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_error_message_contains_original_error_message( + self, + mock_func_os_umask): + """ Should raise a DaemonError with original message. """ + args = self.test_args + test_error = FileNotFoundError("No such directory") + mock_func_os_umask.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_file_creation_mask, **args) + self.assertIn(unicode(test_error), unicode(exc)) + + +@mock.patch.object(os, "setgid") +@mock.patch.object(os, "setuid") +class change_process_owner_TestCase(scaffold.TestCase): + """ Test cases for change_process_owner function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(change_process_owner_TestCase, self).setUp() + + self.test_uid = object() + self.test_gid = object() + self.test_args = dict( + uid=self.test_uid, + gid=self.test_gid, + ) + + def test_changes_gid_and_uid_in_order( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should change process GID and UID in correct order. + + Since the process requires appropriate privilege to use + either of `setuid` or `setgid`, changing the UID must be + done last. + + """ + args = self.test_args + daemon.daemon.change_process_owner(**args) + mock_func_os_setuid.assert_called() + mock_func_os_setgid.assert_called() + + def test_changes_group_id_to_gid( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should change process GID to specified value. """ + args = self.test_args + gid = self.test_gid + daemon.daemon.change_process_owner(**args) + mock_func_os_setgid.assert_called(gid) + + def test_changes_user_id_to_uid( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should change process UID to specified value. """ + args = self.test_args + uid = self.test_uid + daemon.daemon.change_process_owner(**args) + mock_func_os_setuid.assert_called(uid) + + def test_raises_daemon_error_on_os_error_from_setgid( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should raise a DaemonError on receiving an OSError from setgid. """ + args = self.test_args + test_error = OSError(errno.EPERM, "No switching for you!") + mock_func_os_setgid.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_process_owner, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_raises_daemon_error_on_os_error_from_setuid( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should raise a DaemonError on receiving an OSError from setuid. """ + args = self.test_args + test_error = OSError(errno.EPERM, "No switching for you!") + mock_func_os_setuid.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_process_owner, **args) + self.assertEqual(test_error, exc.__cause__) + + def test_error_message_contains_original_error_message( + self, + mock_func_os_setuid, mock_func_os_setgid): + """ Should raise a DaemonError with original message. """ + args = self.test_args + test_error = OSError(errno.EINVAL, "Whatchoo talkin' 'bout?") + mock_func_os_setuid.side_effect = test_error + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.change_process_owner, **args) + self.assertIn(unicode(test_error), unicode(exc)) + + +RLimitResult = collections.namedtuple('RLimitResult', ['soft', 'hard']) + +fake_RLIMIT_CORE = object() + +@mock.patch.object(resource, "RLIMIT_CORE", new=fake_RLIMIT_CORE) +@mock.patch.object(resource, "setrlimit", side_effect=(lambda x, y: None)) +@mock.patch.object(resource, "getrlimit", side_effect=(lambda x: None)) +class prevent_core_dump_TestCase(scaffold.TestCase): + """ Test cases for prevent_core_dump function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(prevent_core_dump_TestCase, self).setUp() + + def test_sets_core_limit_to_zero( + self, + mock_func_resource_getrlimit, mock_func_resource_setrlimit): + """ Should set the RLIMIT_CORE resource to zero. """ + expected_resource = fake_RLIMIT_CORE + expected_limit = tuple(RLimitResult(soft=0, hard=0)) + daemon.daemon.prevent_core_dump() + mock_func_resource_getrlimit.assert_called_with(expected_resource) + mock_func_resource_setrlimit.assert_called_with( + expected_resource, expected_limit) + + def test_raises_error_when_no_core_resource( + self, + mock_func_resource_getrlimit, mock_func_resource_setrlimit): + """ Should raise DaemonError if no RLIMIT_CORE resource. """ + test_error = ValueError("Bogus platform doesn't have RLIMIT_CORE") + def fake_getrlimit(res): + if res == resource.RLIMIT_CORE: + raise test_error + else: + return None + mock_func_resource_getrlimit.side_effect = fake_getrlimit + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.prevent_core_dump) + self.assertEqual(test_error, exc.__cause__) + + +@mock.patch.object(os, "close") +class close_file_descriptor_if_open_TestCase(scaffold.TestCase): + """ Test cases for close_file_descriptor_if_open function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(close_file_descriptor_if_open_TestCase, self).setUp() + + self.fake_fd = 274 + + def test_requests_file_descriptor_close(self, mock_func_os_close): + """ Should request close of file descriptor. """ + fd = self.fake_fd + daemon.daemon.close_file_descriptor_if_open(fd) + mock_func_os_close.assert_called_with(fd) + + def test_ignores_badfd_error_on_close(self, mock_func_os_close): + """ Should ignore OSError EBADF when closing. """ + fd = self.fake_fd + test_error = OSError(errno.EBADF, "Bad file descriptor") + def fake_os_close(fd): + raise test_error + mock_func_os_close.side_effect = fake_os_close + daemon.daemon.close_file_descriptor_if_open(fd) + mock_func_os_close.assert_called_with(fd) + + def test_raises_error_if_oserror_on_close(self, mock_func_os_close): + """ Should raise DaemonError if an OSError occurs when closing. """ + fd = self.fake_fd + test_error = OSError(object(), "Unexpected error") + def fake_os_close(fd): + raise test_error + mock_func_os_close.side_effect = fake_os_close + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.close_file_descriptor_if_open, fd) + self.assertEqual(test_error, exc.__cause__) + + def test_raises_error_if_ioerror_on_close(self, mock_func_os_close): + """ Should raise DaemonError if an IOError occurs when closing. """ + fd = self.fake_fd + test_error = IOError(object(), "Unexpected error") + def fake_os_close(fd): + raise test_error + mock_func_os_close.side_effect = fake_os_close + expected_error = daemon.daemon.DaemonOSEnvironmentError + exc = self.assertRaises( + expected_error, + daemon.daemon.close_file_descriptor_if_open, fd) + self.assertEqual(test_error, exc.__cause__) + + +class maxfd_TestCase(scaffold.TestCase): + """ Test cases for module MAXFD constant. """ + + def test_positive(self): + """ Should be a positive number. """ + maxfd = daemon.daemon.MAXFD + self.assertTrue(maxfd > 0) + + def test_integer(self): + """ Should be an integer. """ + maxfd = daemon.daemon.MAXFD + self.assertEqual(int(maxfd), maxfd) + + def test_reasonably_high(self): + """ Should be reasonably high for default open files limit. + + If the system reports a limit of “infinity” on maximum + file descriptors, we still need a finite number in order + to close “all” of them. Ensure this is reasonably high + to catch most use cases. + + """ + expected_minimum = 2048 + maxfd = daemon.daemon.MAXFD + self.assertTrue( + expected_minimum <= maxfd, + msg=( + "MAXFD should be at least {minimum!r}" + " (got {maxfd!r})".format( + minimum=expected_minimum, maxfd=maxfd))) + + +fake_default_maxfd = 8 +fake_RLIMIT_NOFILE = object() +fake_RLIM_INFINITY = object() +fake_rlimit_nofile_large = 2468 + +def fake_getrlimit_nofile_soft_infinity(resource): + result = RLimitResult(soft=fake_RLIM_INFINITY, hard=object()) + if resource != fake_RLIMIT_NOFILE: + result = NotImplemented + return result + +def fake_getrlimit_nofile_hard_infinity(resource): + result = RLimitResult(soft=object(), hard=fake_RLIM_INFINITY) + if resource != fake_RLIMIT_NOFILE: + result = NotImplemented + return result + +def fake_getrlimit_nofile_hard_large(resource): + result = RLimitResult(soft=object(), hard=fake_rlimit_nofile_large) + if resource != fake_RLIMIT_NOFILE: + result = NotImplemented + return result + +@mock.patch.object(daemon.daemon, "MAXFD", new=fake_default_maxfd) +@mock.patch.object(resource, "RLIMIT_NOFILE", new=fake_RLIMIT_NOFILE) +@mock.patch.object(resource, "RLIM_INFINITY", new=fake_RLIM_INFINITY) +@mock.patch.object( + resource, "getrlimit", + side_effect=fake_getrlimit_nofile_hard_large) +class get_maximum_file_descriptors_TestCase(scaffold.TestCase): + """ Test cases for get_maximum_file_descriptors function. """ + + def test_returns_system_hard_limit(self, mock_func_resource_getrlimit): + """ Should return process hard limit on number of files. """ + expected_result = fake_rlimit_nofile_large + result = daemon.daemon.get_maximum_file_descriptors() + self.assertEqual(expected_result, result) + + def test_returns_module_default_if_hard_limit_infinity( + self, mock_func_resource_getrlimit): + """ Should return module MAXFD if hard limit is infinity. """ + mock_func_resource_getrlimit.side_effect = ( + fake_getrlimit_nofile_hard_infinity) + expected_result = fake_default_maxfd + result = daemon.daemon.get_maximum_file_descriptors() + self.assertEqual(expected_result, result) + + +def fake_get_maximum_file_descriptors(): + return fake_default_maxfd + +@mock.patch.object(resource, "RLIMIT_NOFILE", new=fake_RLIMIT_NOFILE) +@mock.patch.object(resource, "RLIM_INFINITY", new=fake_RLIM_INFINITY) +@mock.patch.object( + resource, "getrlimit", + new=fake_getrlimit_nofile_soft_infinity) +@mock.patch.object( + daemon.daemon, "get_maximum_file_descriptors", + new=fake_get_maximum_file_descriptors) +@mock.patch.object(daemon.daemon, "close_file_descriptor_if_open") +class close_all_open_files_TestCase(scaffold.TestCase): + """ Test cases for close_all_open_files function. """ + + def test_requests_all_open_files_to_close( + self, mock_func_close_file_descriptor_if_open): + """ Should request close of all open files. """ + expected_file_descriptors = range(fake_default_maxfd) + expected_calls = [ + mock.call(fd) for fd in expected_file_descriptors] + daemon.daemon.close_all_open_files() + mock_func_close_file_descriptor_if_open.assert_has_calls( + expected_calls, any_order=True) + + def test_requests_all_but_excluded_files_to_close( + self, mock_func_close_file_descriptor_if_open): + """ Should request close of all open files but those excluded. """ + test_exclude = set([3, 7]) + args = dict( + exclude=test_exclude, + ) + expected_file_descriptors = set( + fd for fd in range(fake_default_maxfd) + if fd not in test_exclude) + expected_calls = [ + mock.call(fd) for fd in expected_file_descriptors] + daemon.daemon.close_all_open_files(**args) + mock_func_close_file_descriptor_if_open.assert_has_calls( + expected_calls, any_order=True) + + +class detach_process_context_TestCase(scaffold.TestCase): + """ Test cases for detach_process_context function. """ + + class FakeOSExit(SystemExit): + """ Fake exception raised for os._exit(). """ + + def setUp(self): + """ Set up test fixtures. """ + super(detach_process_context_TestCase, self).setUp() + + self.mock_module_os = mock.MagicMock(wraps=os) + + fake_pids = [0, 0] + func_patcher_os_fork = mock.patch.object( + os, "fork", + side_effect=iter(fake_pids)) + self.mock_func_os_fork = func_patcher_os_fork.start() + self.addCleanup(func_patcher_os_fork.stop) + self.mock_module_os.attach_mock(self.mock_func_os_fork, "fork") + + func_patcher_os_setsid = mock.patch.object(os, "setsid") + self.mock_func_os_setsid = func_patcher_os_setsid.start() + self.addCleanup(func_patcher_os_setsid.stop) + self.mock_module_os.attach_mock(self.mock_func_os_setsid, "setsid") + + def raise_os_exit(status=None): + raise self.FakeOSExit(status) + + func_patcher_os_force_exit = mock.patch.object( + os, "_exit", + side_effect=raise_os_exit) + self.mock_func_os_force_exit = func_patcher_os_force_exit.start() + self.addCleanup(func_patcher_os_force_exit.stop) + self.mock_module_os.attach_mock(self.mock_func_os_force_exit, "_exit") + + def test_parent_exits(self): + """ Parent process should exit. """ + parent_pid = 23 + self.mock_func_os_fork.side_effect = iter([parent_pid]) + self.assertRaises( + self.FakeOSExit, + daemon.daemon.detach_process_context) + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + mock.call._exit(0), + ]) + + def test_first_fork_error_raises_error(self): + """ Error on first fork should raise DaemonProcessDetachError. """ + fork_errno = 13 + fork_strerror = "Bad stuff happened" + test_error = OSError(fork_errno, fork_strerror) + test_pids_iter = iter([test_error]) + + def fake_fork(): + next_item = next(test_pids_iter) + if isinstance(next_item, Exception): + raise next_item + else: + return next_item + + self.mock_func_os_fork.side_effect = fake_fork + exc = self.assertRaises( + daemon.daemon.DaemonProcessDetachError, + daemon.daemon.detach_process_context) + self.assertEqual(test_error, exc.__cause__) + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + ]) + + def test_child_starts_new_process_group(self): + """ Child should start new process group. """ + daemon.daemon.detach_process_context() + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + mock.call.setsid(), + ]) + + def test_child_forks_next_parent_exits(self): + """ Child should fork, then exit if parent. """ + fake_pids = [0, 42] + self.mock_func_os_fork.side_effect = iter(fake_pids) + self.assertRaises( + self.FakeOSExit, + daemon.daemon.detach_process_context) + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + mock.call.setsid(), + mock.call.fork(), + mock.call._exit(0), + ]) + + def test_second_fork_error_reports_to_stderr(self): + """ Error on second fork should cause report to stderr. """ + fork_errno = 17 + fork_strerror = "Nasty stuff happened" + test_error = OSError(fork_errno, fork_strerror) + test_pids_iter = iter([0, test_error]) + + def fake_fork(): + next_item = next(test_pids_iter) + if isinstance(next_item, Exception): + raise next_item + else: + return next_item + + self.mock_func_os_fork.side_effect = fake_fork + exc = self.assertRaises( + daemon.daemon.DaemonProcessDetachError, + daemon.daemon.detach_process_context) + self.assertEqual(test_error, exc.__cause__) + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + mock.call.setsid(), + mock.call.fork(), + ]) + + def test_child_forks_next_child_continues(self): + """ Child should fork, then continue if child. """ + daemon.daemon.detach_process_context() + self.mock_module_os.assert_has_calls([ + mock.call.fork(), + mock.call.setsid(), + mock.call.fork(), + ]) + + +@mock.patch("os.getppid", return_value=765) +class is_process_started_by_init_TestCase(scaffold.TestCase): + """ Test cases for is_process_started_by_init function. """ + + def test_returns_false_by_default(self, mock_func_os_getppid): + """ Should return False under normal circumstances. """ + expected_result = False + result = daemon.daemon.is_process_started_by_init() + self.assertIs(result, expected_result) + + def test_returns_true_if_parent_process_is_init( + self, mock_func_os_getppid): + """ Should return True if parent process is `init`. """ + init_pid = 1 + mock_func_os_getppid.return_value = init_pid + expected_result = True + result = daemon.daemon.is_process_started_by_init() + self.assertIs(result, expected_result) + + +class is_socket_TestCase(scaffold.TestCase): + """ Test cases for is_socket function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(is_socket_TestCase, self).setUp() + + def fake_getsockopt(level, optname, buflen=None): + result = object() + if optname is socket.SO_TYPE: + result = socket.SOCK_RAW + return result + + self.fake_socket_getsockopt_func = fake_getsockopt + + self.fake_socket_error = socket.error( + errno.ENOTSOCK, + "Socket operation on non-socket") + + self.mock_socket = mock.MagicMock(spec=socket.socket) + self.mock_socket.getsockopt.side_effect = self.fake_socket_error + + def fake_socket_fromfd(fd, family, type, proto=None): + return self.mock_socket + + func_patcher_socket_fromfd = mock.patch.object( + socket, "fromfd", + side_effect=fake_socket_fromfd) + func_patcher_socket_fromfd.start() + self.addCleanup(func_patcher_socket_fromfd.stop) + + def test_returns_false_by_default(self): + """ Should return False under normal circumstances. """ + test_fd = 23 + expected_result = False + result = daemon.daemon.is_socket(test_fd) + self.assertIs(result, expected_result) + + def test_returns_true_if_stdin_is_socket(self): + """ Should return True if `stdin` is a socket. """ + test_fd = 23 + getsockopt = self.mock_socket.getsockopt + getsockopt.side_effect = self.fake_socket_getsockopt_func + expected_result = True + result = daemon.daemon.is_socket(test_fd) + self.assertIs(result, expected_result) + + def test_returns_false_if_stdin_socket_raises_error(self): + """ Should return True if `stdin` is a socket and raises error. """ + test_fd = 23 + getsockopt = self.mock_socket.getsockopt + getsockopt.side_effect = socket.error( + object(), "Weird socket stuff") + expected_result = True + result = daemon.daemon.is_socket(test_fd) + self.assertIs(result, expected_result) + + +class is_process_started_by_superserver_TestCase(scaffold.TestCase): + """ Test cases for is_process_started_by_superserver function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(is_process_started_by_superserver_TestCase, self).setUp() + + def fake_is_socket(fd): + if sys.__stdin__.fileno() == fd: + result = self.fake_stdin_is_socket_func() + else: + result = False + return result + + self.fake_stdin_is_socket_func = (lambda: False) + + func_patcher_is_socket = mock.patch.object( + daemon.daemon, "is_socket", + side_effect=fake_is_socket) + func_patcher_is_socket.start() + self.addCleanup(func_patcher_is_socket.stop) + + def test_returns_false_by_default(self): + """ Should return False under normal circumstances. """ + expected_result = False + result = daemon.daemon.is_process_started_by_superserver() + self.assertIs(result, expected_result) + + def test_returns_true_if_stdin_is_socket(self): + """ Should return True if `stdin` is a socket. """ + self.fake_stdin_is_socket_func = (lambda: True) + expected_result = True + result = daemon.daemon.is_process_started_by_superserver() + self.assertIs(result, expected_result) + + +@mock.patch.object( + daemon.daemon, "is_process_started_by_superserver", + return_value=False) +@mock.patch.object( + daemon.daemon, "is_process_started_by_init", + return_value=False) +class is_detach_process_context_required_TestCase(scaffold.TestCase): + """ Test cases for is_detach_process_context_required function. """ + + def test_returns_true_by_default( + self, + mock_func_is_process_started_by_init, + mock_func_is_process_started_by_superserver): + """ Should return True under normal circumstances. """ + expected_result = True + result = daemon.daemon.is_detach_process_context_required() + self.assertIs(result, expected_result) + + def test_returns_false_if_started_by_init( + self, + mock_func_is_process_started_by_init, + mock_func_is_process_started_by_superserver): + """ Should return False if current process started by init. """ + mock_func_is_process_started_by_init.return_value = True + expected_result = False + result = daemon.daemon.is_detach_process_context_required() + self.assertIs(result, expected_result) + + def test_returns_true_if_started_by_superserver( + self, + mock_func_is_process_started_by_init, + mock_func_is_process_started_by_superserver): + """ Should return False if current process started by superserver. """ + mock_func_is_process_started_by_superserver.return_value = True + expected_result = False + result = daemon.daemon.is_detach_process_context_required() + self.assertIs(result, expected_result) + + +def setup_streams_fixtures(testcase): + """ Set up common test fixtures for standard streams. """ + testcase.stream_file_paths = dict( + stdin=tempfile.mktemp(), + stdout=tempfile.mktemp(), + stderr=tempfile.mktemp(), + ) + + testcase.stream_files_by_name = dict( + (name, FakeFileDescriptorStringIO()) + for name in ['stdin', 'stdout', 'stderr'] + ) + + testcase.stream_files_by_path = dict( + (testcase.stream_file_paths[name], + testcase.stream_files_by_name[name]) + for name in ['stdin', 'stdout', 'stderr'] + ) + + +@mock.patch.object(os, "dup2") +class redirect_stream_TestCase(scaffold.TestCase): + """ Test cases for redirect_stream function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(redirect_stream_TestCase, self).setUp() + + self.test_system_stream = FakeFileDescriptorStringIO() + self.test_target_stream = FakeFileDescriptorStringIO() + self.test_null_file = FakeFileDescriptorStringIO() + + def fake_os_open(path, flag, mode=None): + if path == os.devnull: + result = self.test_null_file.fileno() + else: + raise FileNotFoundError("No such file", path) + return result + + func_patcher_os_open = mock.patch.object( + os, "open", + side_effect=fake_os_open) + self.mock_func_os_open = func_patcher_os_open.start() + self.addCleanup(func_patcher_os_open.stop) + + def test_duplicates_target_file_descriptor( + self, mock_func_os_dup2): + """ Should duplicate file descriptor from target to system stream. """ + system_stream = self.test_system_stream + system_fileno = system_stream.fileno() + target_stream = self.test_target_stream + target_fileno = target_stream.fileno() + daemon.daemon.redirect_stream(system_stream, target_stream) + mock_func_os_dup2.assert_called_with(target_fileno, system_fileno) + + def test_duplicates_null_file_descriptor_by_default( + self, mock_func_os_dup2): + """ Should by default duplicate the null file to the system stream. """ + system_stream = self.test_system_stream + system_fileno = system_stream.fileno() + target_stream = None + null_path = os.devnull + null_flag = os.O_RDWR + null_file = self.test_null_file + null_fileno = null_file.fileno() + daemon.daemon.redirect_stream(system_stream, target_stream) + self.mock_func_os_open.assert_called_with(null_path, null_flag) + mock_func_os_dup2.assert_called_with(null_fileno, system_fileno) + + +class make_default_signal_map_TestCase(scaffold.TestCase): + """ Test cases for make_default_signal_map function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(make_default_signal_map_TestCase, self).setUp() + + # Use whatever default string type this Python version needs. + signal_module_name = str('signal') + self.fake_signal_module = ModuleType(signal_module_name) + + fake_signal_names = [ + 'SIGHUP', + 'SIGCLD', + 'SIGSEGV', + 'SIGTSTP', + 'SIGTTIN', + 'SIGTTOU', + 'SIGTERM', + ] + for name in fake_signal_names: + setattr(self.fake_signal_module, name, object()) + + module_patcher_signal = mock.patch.object( + daemon.daemon, "signal", new=self.fake_signal_module) + module_patcher_signal.start() + self.addCleanup(module_patcher_signal.stop) + + default_signal_map_by_name = { + 'SIGTSTP': None, + 'SIGTTIN': None, + 'SIGTTOU': None, + 'SIGTERM': 'terminate', + } + self.default_signal_map = dict( + (getattr(self.fake_signal_module, name), target) + for (name, target) in default_signal_map_by_name.items()) + + def test_returns_constructed_signal_map(self): + """ Should return map per default. """ + expected_result = self.default_signal_map + result = daemon.daemon.make_default_signal_map() + self.assertEqual(expected_result, result) + + def test_returns_signal_map_with_only_ids_in_signal_module(self): + """ Should return map with only signals in the `signal` module. + + The `signal` module is documented to only define those + signals which exist on the running system. Therefore the + default map should not contain any signals which are not + defined in the `signal` module. + + """ + del(self.default_signal_map[self.fake_signal_module.SIGTTOU]) + del(self.fake_signal_module.SIGTTOU) + expected_result = self.default_signal_map + result = daemon.daemon.make_default_signal_map() + self.assertEqual(expected_result, result) + + +@mock.patch.object(daemon.daemon.signal, "signal") +class set_signal_handlers_TestCase(scaffold.TestCase): + """ Test cases for set_signal_handlers function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(set_signal_handlers_TestCase, self).setUp() + + self.signal_handler_map = { + signal.SIGQUIT: object(), + signal.SIGSEGV: object(), + signal.SIGINT: object(), + } + + def test_sets_signal_handler_for_each_item(self, mock_func_signal_signal): + """ Should set signal handler for each item in map. """ + signal_handler_map = self.signal_handler_map + expected_calls = [ + mock.call(signal_number, handler) + for (signal_number, handler) in signal_handler_map.items()] + daemon.daemon.set_signal_handlers(signal_handler_map) + self.assertEquals(expected_calls, mock_func_signal_signal.mock_calls) + + +@mock.patch.object(daemon.daemon.atexit, "register") +class register_atexit_function_TestCase(scaffold.TestCase): + """ Test cases for register_atexit_function function. """ + + def test_registers_function_for_atexit_processing( + self, mock_func_atexit_register): + """ Should register specified function for atexit processing. """ + func = object() + daemon.daemon.register_atexit_function(func) + mock_func_atexit_register.assert_called_with(func) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/test_metadata.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,380 @@ +# -*- coding: utf-8 -*- +# +# test/test_metadata.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Unit test for ‘_metadata’ private module. + """ + +from __future__ import (absolute_import, unicode_literals) + +import sys +import errno +import re +try: + # Python 3 standard library. + import urllib.parse as urlparse +except ImportError: + # Python 2 standard library. + import urlparse +import functools +import collections +import json + +import pkg_resources +import mock +import testtools.helpers +import testtools.matchers +import testscenarios + +from . import scaffold +from .scaffold import (basestring, unicode) + +import daemon._metadata as metadata + + +class HasAttribute(testtools.matchers.Matcher): + """ A matcher to assert an object has a named attribute. """ + + def __init__(self, name): + self.attribute_name = name + + def match(self, instance): + """ Assert the object `instance` has an attribute named `name`. """ + result = None + if not testtools.helpers.safe_hasattr(instance, self.attribute_name): + result = AttributeNotFoundMismatch(instance, self.attribute_name) + return result + + +class AttributeNotFoundMismatch(testtools.matchers.Mismatch): + """ The specified instance does not have the named attribute. """ + + def __init__(self, instance, name): + self.instance = instance + self.attribute_name = name + + def describe(self): + """ Emit a text description of this mismatch. """ + text = ( + "{instance!r}" + " has no attribute named {name!r}").format( + instance=self.instance, name=self.attribute_name) + return text + + +class metadata_value_TestCase(scaffold.TestCaseWithScenarios): + """ Test cases for metadata module values. """ + + expected_str_attributes = set([ + 'version_installed', + 'author', + 'copyright', + 'license', + 'url', + ]) + + scenarios = [ + (name, {'attribute_name': name}) + for name in expected_str_attributes] + for (name, params) in scenarios: + if name == 'version_installed': + # No duck typing, this attribute might be None. + params['ducktype_attribute_name'] = NotImplemented + continue + # Expect an attribute of ‘str’ to test this value. + params['ducktype_attribute_name'] = 'isdigit' + + def test_module_has_attribute(self): + """ Metadata should have expected value as a module attribute. """ + self.assertThat( + metadata, HasAttribute(self.attribute_name)) + + def test_module_attribute_has_duck_type(self): + """ Metadata value should have expected duck-typing attribute. """ + if self.ducktype_attribute_name == NotImplemented: + self.skipTest("Can't assert this attribute's type") + instance = getattr(metadata, self.attribute_name) + self.assertThat( + instance, HasAttribute(self.ducktype_attribute_name)) + + +class parse_person_field_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘get_latest_version’ function. """ + + scenarios = [ + ('simple', { + 'test_person': "Foo Bar <foo.bar@example.com>", + 'expected_result': ("Foo Bar", "foo.bar@example.com"), + }), + ('empty', { + 'test_person': "", + 'expected_result': (None, None), + }), + ('none', { + 'test_person': None, + 'expected_error': TypeError, + }), + ('no email', { + 'test_person': "Foo Bar", + 'expected_result': ("Foo Bar", None), + }), + ] + + def test_returns_expected_result(self): + """ Should return expected result. """ + if hasattr(self, 'expected_error'): + self.assertRaises( + self.expected_error, + metadata.parse_person_field, self.test_person) + else: + result = metadata.parse_person_field(self.test_person) + self.assertEqual(self.expected_result, result) + + +class YearRange_TestCase(scaffold.TestCaseWithScenarios): + """ Test cases for ‘YearRange’ class. """ + + scenarios = [ + ('simple', { + 'begin_year': 1970, + 'end_year': 1979, + 'expected_text': "1970–1979", + }), + ('same year', { + 'begin_year': 1970, + 'end_year': 1970, + 'expected_text': "1970", + }), + ('no end year', { + 'begin_year': 1970, + 'end_year': None, + 'expected_text': "1970", + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(YearRange_TestCase, self).setUp() + + self.test_instance = metadata.YearRange( + self.begin_year, self.end_year) + + def test_text_representation_as_expected(self): + """ Text representation should be as expected. """ + result = unicode(self.test_instance) + self.assertEqual(result, self.expected_text) + + +FakeYearRange = collections.namedtuple('FakeYearRange', ['begin', 'end']) + +@mock.patch.object(metadata, 'YearRange', new=FakeYearRange) +class make_year_range_TestCase(scaffold.TestCaseWithScenarios): + """ Test cases for ‘make_year_range’ function. """ + + scenarios = [ + ('simple', { + 'begin_year': "1970", + 'end_date': "1979-01-01", + 'expected_range': FakeYearRange(begin=1970, end=1979), + }), + ('same year', { + 'begin_year': "1970", + 'end_date': "1970-01-01", + 'expected_range': FakeYearRange(begin=1970, end=1970), + }), + ('no end year', { + 'begin_year': "1970", + 'end_date': None, + 'expected_range': FakeYearRange(begin=1970, end=None), + }), + ('end date UNKNOWN token', { + 'begin_year': "1970", + 'end_date': "UNKNOWN", + 'expected_range': FakeYearRange(begin=1970, end=None), + }), + ('end date FUTURE token', { + 'begin_year': "1970", + 'end_date': "FUTURE", + 'expected_range': FakeYearRange(begin=1970, end=None), + }), + ] + + def test_result_matches_expected_range(self): + """ Result should match expected YearRange. """ + result = metadata.make_year_range(self.begin_year, self.end_date) + self.assertEqual(result, self.expected_range) + + +class metadata_content_TestCase(scaffold.TestCase): + """ Test cases for content of metadata. """ + + def test_copyright_formatted_correctly(self): + """ Copyright statement should be formatted correctly. """ + regex_pattern = ( + "Copyright © " + "\d{4}" # four-digit year + "(?:–\d{4})?" # optional range dash and ending four-digit year + ) + regex_flags = re.UNICODE + self.assertThat( + metadata.copyright, + testtools.matchers.MatchesRegex(regex_pattern, regex_flags)) + + def test_author_formatted_correctly(self): + """ Author information should be formatted correctly. """ + regex_pattern = ( + ".+ " # name + "<[^>]+>" # email address, in angle brackets + ) + regex_flags = re.UNICODE + self.assertThat( + metadata.author, + testtools.matchers.MatchesRegex(regex_pattern, regex_flags)) + + def test_copyright_contains_author(self): + """ Copyright information should contain author information. """ + self.assertThat( + metadata.copyright, + testtools.matchers.Contains(metadata.author)) + + def test_url_parses_correctly(self): + """ Homepage URL should parse correctly. """ + result = urlparse.urlparse(metadata.url) + self.assertIsInstance( + result, urlparse.ParseResult, + "URL value {url!r} did not parse correctly".format( + url=metadata.url)) + + +try: + FileNotFoundError +except NameError: + # Python 2 uses IOError. + FileNotFoundError = functools.partial(IOError, errno.ENOENT) + +version_info_filename = "version_info.json" + +def fake_func_has_metadata(testcase, resource_name): + """ Fake the behaviour of ‘pkg_resources.Distribution.has_metadata’. """ + if ( + resource_name != testcase.expected_resource_name + or not hasattr(testcase, 'test_version_info')): + return False + return True + + +def fake_func_get_metadata(testcase, resource_name): + """ Fake the behaviour of ‘pkg_resources.Distribution.get_metadata’. """ + if not fake_func_has_metadata(testcase, resource_name): + error = FileNotFoundError(resource_name) + raise error + content = testcase.test_version_info + return content + + +def fake_func_get_distribution(testcase, distribution_name): + """ Fake the behaviour of ‘pkg_resources.get_distribution’. """ + if distribution_name != metadata.distribution_name: + raise pkg_resources.DistributionNotFound + if hasattr(testcase, 'get_distribution_error'): + raise testcase.get_distribution_error + mock_distribution = testcase.mock_distribution + mock_distribution.has_metadata.side_effect = functools.partial( + fake_func_has_metadata, testcase) + mock_distribution.get_metadata.side_effect = functools.partial( + fake_func_get_metadata, testcase) + return mock_distribution + + +@mock.patch.object(metadata, 'distribution_name', new="mock-dist") +class get_distribution_version_info_TestCase(scaffold.TestCaseWithScenarios): + """ Test cases for ‘get_distribution_version_info’ function. """ + + default_version_info = { + 'release_date': "UNKNOWN", + 'version': "UNKNOWN", + 'maintainer': "UNKNOWN", + } + + scenarios = [ + ('version 0.0', { + 'test_version_info': json.dumps({ + 'version': "0.0", + }), + 'expected_version_info': {'version': "0.0"}, + }), + ('version 1.0', { + 'test_version_info': json.dumps({ + 'version': "1.0", + }), + 'expected_version_info': {'version': "1.0"}, + }), + ('file lorem_ipsum.json', { + 'version_info_filename': "lorem_ipsum.json", + 'test_version_info': json.dumps({ + 'version': "1.0", + }), + 'expected_version_info': {'version': "1.0"}, + }), + ('not installed', { + 'get_distribution_error': pkg_resources.DistributionNotFound(), + 'expected_version_info': default_version_info, + }), + ('no version_info', { + 'expected_version_info': default_version_info, + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(get_distribution_version_info_TestCase, self).setUp() + + if hasattr(self, 'expected_resource_name'): + self.test_args = {'filename': self.expected_resource_name} + else: + self.test_args = {} + self.expected_resource_name = version_info_filename + + self.mock_distribution = mock.MagicMock() + func_patcher_get_distribution = mock.patch.object( + pkg_resources, 'get_distribution') + func_patcher_get_distribution.start() + self.addCleanup(func_patcher_get_distribution.stop) + pkg_resources.get_distribution.side_effect = functools.partial( + fake_func_get_distribution, self) + + def test_requests_installed_distribution(self): + """ The package distribution should be retrieved. """ + expected_distribution_name = metadata.distribution_name + version_info = metadata.get_distribution_version_info(**self.test_args) + pkg_resources.get_distribution.assert_called_with( + expected_distribution_name) + + def test_requests_specified_filename(self): + """ The specified metadata resource name should be requested. """ + if hasattr(self, 'get_distribution_error'): + self.skipTest("No access to distribution") + version_info = metadata.get_distribution_version_info(**self.test_args) + self.mock_distribution.has_metadata.assert_called_with( + self.expected_resource_name) + + def test_result_matches_expected_items(self): + """ The result should match the expected items. """ + version_info = metadata.get_distribution_version_info(**self.test_args) + self.assertEqual(self.expected_version_info, version_info) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/test_pidfile.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,472 @@ +# -*- coding: utf-8 -*- +# +# test/test_pidfile.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Unit test for ‘pidfile’ module. + """ + +from __future__ import (absolute_import, unicode_literals) + +try: + # Python 3 standard library. + import builtins +except ImportError: + # Python 2 standard library. + import __builtin__ as builtins +import os +import itertools +import tempfile +import errno +import functools +try: + # Standard library of Python 2.7 and later. + from io import StringIO +except ImportError: + # Standard library of Python 2.6 and earlier. + from StringIO import StringIO + +import mock +import lockfile + +from . import scaffold + +import daemon.pidfile + + +class FakeFileDescriptorStringIO(StringIO, object): + """ A StringIO class that fakes a file descriptor. """ + + _fileno_generator = itertools.count() + + def __init__(self, *args, **kwargs): + self._fileno = next(self._fileno_generator) + super(FakeFileDescriptorStringIO, self).__init__(*args, **kwargs) + + def fileno(self): + return self._fileno + + def __enter__(self): + return self + + def __exit__(self, exc_type, exc_val, exc_tb): + pass + + +try: + FileNotFoundError + PermissionError +except NameError: + # Python 2 uses IOError. + FileNotFoundError = functools.partial(IOError, errno.ENOENT) + PermissionError = functools.partial(IOError, errno.EPERM) + + +def make_pidlockfile_scenarios(): + """ Make a collection of scenarios for testing `PIDLockFile` instances. + + :return: A collection of scenarios for tests involving + `PIDLockfFile` instances. + + The collection is a mapping from scenario name to a dictionary of + scenario attributes. + + """ + + fake_current_pid = 235 + fake_other_pid = 8642 + fake_pidfile_path = tempfile.mktemp() + + fake_pidfile_empty = FakeFileDescriptorStringIO() + fake_pidfile_current_pid = FakeFileDescriptorStringIO( + "{pid:d}\n".format(pid=fake_current_pid)) + fake_pidfile_other_pid = FakeFileDescriptorStringIO( + "{pid:d}\n".format(pid=fake_other_pid)) + fake_pidfile_bogus = FakeFileDescriptorStringIO( + "b0gUs") + + scenarios = { + 'simple': {}, + 'not-exist': { + 'open_func_name': 'fake_open_nonexist', + 'os_open_func_name': 'fake_os_open_nonexist', + }, + 'not-exist-write-denied': { + 'open_func_name': 'fake_open_nonexist', + 'os_open_func_name': 'fake_os_open_nonexist', + }, + 'not-exist-write-busy': { + 'open_func_name': 'fake_open_nonexist', + 'os_open_func_name': 'fake_os_open_nonexist', + }, + 'exist-read-denied': { + 'open_func_name': 'fake_open_read_denied', + 'os_open_func_name': 'fake_os_open_read_denied', + }, + 'exist-locked-read-denied': { + 'locking_pid': fake_other_pid, + 'open_func_name': 'fake_open_read_denied', + 'os_open_func_name': 'fake_os_open_read_denied', + }, + 'exist-empty': {}, + 'exist-invalid': { + 'pidfile': fake_pidfile_bogus, + }, + 'exist-current-pid': { + 'pidfile': fake_pidfile_current_pid, + 'pidfile_pid': fake_current_pid, + }, + 'exist-current-pid-locked': { + 'pidfile': fake_pidfile_current_pid, + 'pidfile_pid': fake_current_pid, + 'locking_pid': fake_current_pid, + }, + 'exist-other-pid': { + 'pidfile': fake_pidfile_other_pid, + 'pidfile_pid': fake_other_pid, + }, + 'exist-other-pid-locked': { + 'pidfile': fake_pidfile_other_pid, + 'pidfile_pid': fake_other_pid, + 'locking_pid': fake_other_pid, + }, + } + + for scenario in scenarios.values(): + scenario['pid'] = fake_current_pid + scenario['pidfile_path'] = fake_pidfile_path + if 'pidfile' not in scenario: + scenario['pidfile'] = fake_pidfile_empty + if 'pidfile_pid' not in scenario: + scenario['pidfile_pid'] = None + if 'locking_pid' not in scenario: + scenario['locking_pid'] = None + if 'open_func_name' not in scenario: + scenario['open_func_name'] = 'fake_open_okay' + if 'os_open_func_name' not in scenario: + scenario['os_open_func_name'] = 'fake_os_open_okay' + + return scenarios + + +def setup_pidfile_fixtures(testcase): + """ Set up common fixtures for PID file test cases. + + :param testcase: A `TestCase` instance to decorate. + + Decorate the `testcase` with attributes to be fixtures for tests + involving `PIDLockFile` instances. + + """ + scenarios = make_pidlockfile_scenarios() + testcase.pidlockfile_scenarios = scenarios + + def get_scenario_option(testcase, key, default=None): + value = default + try: + value = testcase.scenario[key] + except (NameError, TypeError, AttributeError, KeyError): + pass + return value + + func_patcher_os_getpid = mock.patch.object( + os, "getpid", + return_value=scenarios['simple']['pid']) + func_patcher_os_getpid.start() + testcase.addCleanup(func_patcher_os_getpid.stop) + + def make_fake_open_funcs(testcase): + + def fake_open_nonexist(filename, mode, buffering): + if mode.startswith('r'): + error = FileNotFoundError( + "No such file {filename!r}".format( + filename=filename)) + raise error + else: + result = testcase.scenario['pidfile'] + return result + + def fake_open_read_denied(filename, mode, buffering): + if mode.startswith('r'): + error = PermissionError( + "Read denied on {filename!r}".format( + filename=filename)) + raise error + else: + result = testcase.scenario['pidfile'] + return result + + def fake_open_okay(filename, mode, buffering): + result = testcase.scenario['pidfile'] + return result + + def fake_os_open_nonexist(filename, flags, mode): + if (flags & os.O_CREAT): + result = testcase.scenario['pidfile'].fileno() + else: + error = FileNotFoundError( + "No such file {filename!r}".format( + filename=filename)) + raise error + return result + + def fake_os_open_read_denied(filename, flags, mode): + if (flags & os.O_CREAT): + result = testcase.scenario['pidfile'].fileno() + else: + error = PermissionError( + "Read denied on {filename!r}".format( + filename=filename)) + raise error + return result + + def fake_os_open_okay(filename, flags, mode): + result = testcase.scenario['pidfile'].fileno() + return result + + funcs = dict( + (name, obj) for (name, obj) in vars().items() + if callable(obj)) + + return funcs + + testcase.fake_pidfile_open_funcs = make_fake_open_funcs(testcase) + + def fake_open(filename, mode='rt', buffering=None): + scenario_path = get_scenario_option(testcase, 'pidfile_path') + if filename == scenario_path: + func_name = testcase.scenario['open_func_name'] + fake_open_func = testcase.fake_pidfile_open_funcs[func_name] + result = fake_open_func(filename, mode, buffering) + else: + result = FakeFileDescriptorStringIO() + return result + + mock_open = mock.mock_open() + mock_open.side_effect = fake_open + + func_patcher_builtin_open = mock.patch.object( + builtins, "open", + new=mock_open) + func_patcher_builtin_open.start() + testcase.addCleanup(func_patcher_builtin_open.stop) + + def fake_os_open(filename, flags, mode=None): + scenario_path = get_scenario_option(testcase, 'pidfile_path') + if filename == scenario_path: + func_name = testcase.scenario['os_open_func_name'] + fake_os_open_func = testcase.fake_pidfile_open_funcs[func_name] + result = fake_os_open_func(filename, flags, mode) + else: + result = FakeFileDescriptorStringIO().fileno() + return result + + mock_os_open = mock.MagicMock(side_effect=fake_os_open) + + func_patcher_os_open = mock.patch.object( + os, "open", + new=mock_os_open) + func_patcher_os_open.start() + testcase.addCleanup(func_patcher_os_open.stop) + + def fake_os_fdopen(fd, mode='rt', buffering=None): + scenario_pidfile = get_scenario_option( + testcase, 'pidfile', FakeFileDescriptorStringIO()) + if fd == testcase.scenario['pidfile'].fileno(): + result = testcase.scenario['pidfile'] + else: + raise OSError(errno.EBADF, "Bad file descriptor") + return result + + mock_os_fdopen = mock.MagicMock(side_effect=fake_os_fdopen) + + func_patcher_os_fdopen = mock.patch.object( + os, "fdopen", + new=mock_os_fdopen) + func_patcher_os_fdopen.start() + testcase.addCleanup(func_patcher_os_fdopen.stop) + + +def make_lockfile_method_fakes(scenario): + """ Make common fake methods for lockfile class. + + :param scenario: A scenario for testing with PIDLockFile. + :return: A mapping from normal function name to the corresponding + fake function. + + Each fake function behaves appropriately for the specified `scenario`. + + """ + + def fake_func_read_pid(): + return scenario['pidfile_pid'] + def fake_func_is_locked(): + return (scenario['locking_pid'] is not None) + def fake_func_i_am_locking(): + return ( + scenario['locking_pid'] == scenario['pid']) + def fake_func_acquire(timeout=None): + if scenario['locking_pid'] is not None: + raise lockfile.AlreadyLocked() + scenario['locking_pid'] = scenario['pid'] + def fake_func_release(): + if scenario['locking_pid'] is None: + raise lockfile.NotLocked() + if scenario['locking_pid'] != scenario['pid']: + raise lockfile.NotMyLock() + scenario['locking_pid'] = None + def fake_func_break_lock(): + scenario['locking_pid'] = None + + fake_methods = dict( + ( + func_name.replace('fake_func_', ''), + mock.MagicMock(side_effect=fake_func)) + for (func_name, fake_func) in vars().items() + if func_name.startswith('fake_func_')) + + return fake_methods + + +def apply_lockfile_method_mocks(mock_lockfile, testcase, scenario): + """ Apply common fake methods to mock lockfile class. + + :param mock_lockfile: An object providing the `LockFile` interface. + :param testcase: The `TestCase` instance providing the context for + the patch. + :param scenario: The `PIDLockFile` test scenario to use. + + Mock the `LockFile` methods of `mock_lockfile`, by applying fake + methods customised for `scenario`. The mock is does by a patch + within the context of `testcase`. + + """ + fake_methods = dict( + (func_name, fake_func) + for (func_name, fake_func) in + make_lockfile_method_fakes(scenario).items() + if func_name not in ['read_pid']) + + for (func_name, fake_func) in fake_methods.items(): + func_patcher = mock.patch.object( + mock_lockfile, func_name, + new=fake_func) + func_patcher.start() + testcase.addCleanup(func_patcher.stop) + + +def setup_pidlockfile_fixtures(testcase, scenario_name=None): + """ Set up common fixtures for PIDLockFile test cases. + + :param testcase: The `TestCase` instance to decorate. + :param scenario_name: The name of the `PIDLockFile` scenario to use. + + Decorate the `testcase` with attributes that are fixtures for test + cases involving `PIDLockFile` instances.` + + """ + + setup_pidfile_fixtures(testcase) + + for func_name in [ + 'write_pid_to_pidfile', + 'remove_existing_pidfile', + ]: + func_patcher = mock.patch.object(lockfile.pidlockfile, func_name) + func_patcher.start() + testcase.addCleanup(func_patcher.stop) + + +class TimeoutPIDLockFile_TestCase(scaffold.TestCase): + """ Test cases for ‘TimeoutPIDLockFile’ class. """ + + def setUp(self): + """ Set up test fixtures. """ + super(TimeoutPIDLockFile_TestCase, self).setUp() + + pidlockfile_scenarios = make_pidlockfile_scenarios() + self.pidlockfile_scenario = pidlockfile_scenarios['simple'] + pidfile_path = self.pidlockfile_scenario['pidfile_path'] + + for func_name in ['__init__', 'acquire']: + func_patcher = mock.patch.object( + lockfile.pidlockfile.PIDLockFile, func_name) + func_patcher.start() + self.addCleanup(func_patcher.stop) + + self.scenario = { + 'pidfile_path': self.pidlockfile_scenario['pidfile_path'], + 'acquire_timeout': self.getUniqueInteger(), + } + + self.test_kwargs = dict( + path=self.scenario['pidfile_path'], + acquire_timeout=self.scenario['acquire_timeout'], + ) + self.test_instance = daemon.pidfile.TimeoutPIDLockFile( + **self.test_kwargs) + + def test_inherits_from_pidlockfile(self): + """ Should inherit from PIDLockFile. """ + instance = self.test_instance + self.assertIsInstance(instance, lockfile.pidlockfile.PIDLockFile) + + def test_init_has_expected_signature(self): + """ Should have expected signature for ‘__init__’. """ + def test_func(self, path, acquire_timeout=None, *args, **kwargs): pass + test_func.__name__ = str('__init__') + self.assertFunctionSignatureMatch( + test_func, + daemon.pidfile.TimeoutPIDLockFile.__init__) + + def test_has_specified_acquire_timeout(self): + """ Should have specified ‘acquire_timeout’ value. """ + instance = self.test_instance + expected_timeout = self.test_kwargs['acquire_timeout'] + self.assertEqual(expected_timeout, instance.acquire_timeout) + + @mock.patch.object( + lockfile.pidlockfile.PIDLockFile, "__init__", + autospec=True) + def test_calls_superclass_init(self, mock_init): + """ Should call the superclass ‘__init__’. """ + expected_path = self.test_kwargs['path'] + instance = daemon.pidfile.TimeoutPIDLockFile(**self.test_kwargs) + mock_init.assert_called_with(instance, expected_path) + + @mock.patch.object( + lockfile.pidlockfile.PIDLockFile, "acquire", + autospec=True) + def test_acquire_uses_specified_timeout(self, mock_func_acquire): + """ Should call the superclass ‘acquire’ with specified timeout. """ + instance = self.test_instance + test_timeout = self.getUniqueInteger() + expected_timeout = test_timeout + instance.acquire(test_timeout) + mock_func_acquire.assert_called_with(instance, expected_timeout) + + @mock.patch.object( + lockfile.pidlockfile.PIDLockFile, "acquire", + autospec=True) + def test_acquire_uses_stored_timeout_by_default(self, mock_func_acquire): + """ Should call superclass ‘acquire’ with stored timeout by default. """ + instance = self.test_instance + test_timeout = self.test_kwargs['acquire_timeout'] + expected_timeout = test_timeout + instance.acquire() + mock_func_acquire.assert_called_with(instance, expected_timeout) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test/test_runner.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,675 @@ +# -*- coding: utf-8 -*- +# +# test/test_runner.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2009–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the Apache License, version 2.0 as published by the +# Apache Software Foundation. +# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details. + +""" Unit test for ‘runner’ module. + """ + +from __future__ import (absolute_import, unicode_literals) + +try: + # Python 3 standard library. + import builtins +except ImportError: + # Python 2 standard library. + import __builtin__ as builtins +import os +import os.path +import sys +import tempfile +import errno +import signal +import functools + +import lockfile +import mock +import testtools + +from . import scaffold +from .scaffold import (basestring, unicode) +from .test_pidfile import ( + FakeFileDescriptorStringIO, + setup_pidfile_fixtures, + make_pidlockfile_scenarios, + apply_lockfile_method_mocks, + ) +from .test_daemon import ( + setup_streams_fixtures, + ) + +import daemon.daemon +import daemon.runner +import daemon.pidfile + + +class ModuleExceptions_TestCase(scaffold.Exception_TestCase): + """ Test cases for module exception classes. """ + + scenarios = scaffold.make_exception_scenarios([ + ('daemon.runner.DaemonRunnerError', dict( + exc_type = daemon.runner.DaemonRunnerError, + min_args = 1, + types = [Exception], + )), + ('daemon.runner.DaemonRunnerInvalidActionError', dict( + exc_type = daemon.runner.DaemonRunnerInvalidActionError, + min_args = 1, + types = [daemon.runner.DaemonRunnerError, ValueError], + )), + ('daemon.runner.DaemonRunnerStartFailureError', dict( + exc_type = daemon.runner.DaemonRunnerStartFailureError, + min_args = 1, + types = [daemon.runner.DaemonRunnerError, RuntimeError], + )), + ('daemon.runner.DaemonRunnerStopFailureError', dict( + exc_type = daemon.runner.DaemonRunnerStopFailureError, + min_args = 1, + types = [daemon.runner.DaemonRunnerError, RuntimeError], + )), + ]) + + +def make_runner_scenarios(): + """ Make a collection of scenarios for testing `DaemonRunner` instances. + + :return: A collection of scenarios for tests involving + `DaemonRunner` instances. + + The collection is a mapping from scenario name to a dictionary of + scenario attributes. + + """ + + pidlockfile_scenarios = make_pidlockfile_scenarios() + + scenarios = { + 'simple': { + 'pidlockfile_scenario_name': 'simple', + }, + 'pidfile-locked': { + 'pidlockfile_scenario_name': 'exist-other-pid-locked', + }, + } + + for scenario in scenarios.values(): + if 'pidlockfile_scenario_name' in scenario: + pidlockfile_scenario = pidlockfile_scenarios.pop( + scenario['pidlockfile_scenario_name']) + scenario['pid'] = pidlockfile_scenario['pid'] + scenario['pidfile_path'] = pidlockfile_scenario['pidfile_path'] + scenario['pidfile_timeout'] = 23 + scenario['pidlockfile_scenario'] = pidlockfile_scenario + + return scenarios + + +def set_runner_scenario(testcase, scenario_name): + """ Set the DaemonRunner test scenario for the test case. + + :param testcase: The `TestCase` instance to decorate. + :param scenario_name: The name of the scenario to use. + + Set the `DaemonRunner` test scenario name and decorate the + `testcase` with the corresponding scenario fixtures. + + """ + scenarios = testcase.runner_scenarios + testcase.scenario = scenarios[scenario_name] + apply_lockfile_method_mocks( + testcase.mock_runner_lockfile, + testcase, + testcase.scenario['pidlockfile_scenario']) + + +def setup_runner_fixtures(testcase): + """ Set up common fixtures for `DaemonRunner` test cases. + + :param testcase: A `TestCase` instance to decorate. + + Decorate the `testcase` with attributes to be fixtures for tests + involving `DaemonRunner` instances. + + """ + setup_pidfile_fixtures(testcase) + setup_streams_fixtures(testcase) + + testcase.runner_scenarios = make_runner_scenarios() + + patcher_stderr = mock.patch.object( + sys, "stderr", + new=FakeFileDescriptorStringIO()) + testcase.fake_stderr = patcher_stderr.start() + testcase.addCleanup(patcher_stderr.stop) + + simple_scenario = testcase.runner_scenarios['simple'] + + testcase.mock_runner_lockfile = mock.MagicMock( + spec=daemon.pidfile.TimeoutPIDLockFile) + apply_lockfile_method_mocks( + testcase.mock_runner_lockfile, + testcase, + simple_scenario['pidlockfile_scenario']) + testcase.mock_runner_lockfile.path = simple_scenario['pidfile_path'] + + patcher_lockfile_class = mock.patch.object( + daemon.pidfile, "TimeoutPIDLockFile", + return_value=testcase.mock_runner_lockfile) + patcher_lockfile_class.start() + testcase.addCleanup(patcher_lockfile_class.stop) + + class TestApp(object): + + def __init__(self): + self.stdin_path = testcase.stream_file_paths['stdin'] + self.stdout_path = testcase.stream_file_paths['stdout'] + self.stderr_path = testcase.stream_file_paths['stderr'] + self.pidfile_path = simple_scenario['pidfile_path'] + self.pidfile_timeout = simple_scenario['pidfile_timeout'] + + run = mock.MagicMock(name="TestApp.run") + + testcase.TestApp = TestApp + + patcher_runner_daemoncontext = mock.patch.object( + daemon.runner, "DaemonContext", autospec=True) + patcher_runner_daemoncontext.start() + testcase.addCleanup(patcher_runner_daemoncontext.stop) + + testcase.test_app = testcase.TestApp() + + testcase.test_program_name = "bazprog" + testcase.test_program_path = os.path.join( + "/foo/bar", testcase.test_program_name) + testcase.valid_argv_params = { + 'start': [testcase.test_program_path, 'start'], + 'stop': [testcase.test_program_path, 'stop'], + 'restart': [testcase.test_program_path, 'restart'], + } + + def fake_open(filename, mode=None, buffering=None): + if filename in testcase.stream_files_by_path: + result = testcase.stream_files_by_path[filename] + else: + result = FakeFileDescriptorStringIO() + result.mode = mode + result.buffering = buffering + return result + + mock_open = mock.mock_open() + mock_open.side_effect = fake_open + + func_patcher_builtin_open = mock.patch.object( + builtins, "open", + new=mock_open) + func_patcher_builtin_open.start() + testcase.addCleanup(func_patcher_builtin_open.stop) + + func_patcher_os_kill = mock.patch.object(os, "kill") + func_patcher_os_kill.start() + testcase.addCleanup(func_patcher_os_kill.stop) + + patcher_sys_argv = mock.patch.object( + sys, "argv", + new=testcase.valid_argv_params['start']) + patcher_sys_argv.start() + testcase.addCleanup(patcher_sys_argv.stop) + + testcase.test_instance = daemon.runner.DaemonRunner(testcase.test_app) + + testcase.scenario = NotImplemented + + +class DaemonRunner_BaseTestCase(scaffold.TestCase): + """ Base class for DaemonRunner test case classes. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_BaseTestCase, self).setUp() + + setup_runner_fixtures(self) + set_runner_scenario(self, 'simple') + + +class DaemonRunner_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner class. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_TestCase, self).setUp() + + func_patcher_parse_args = mock.patch.object( + daemon.runner.DaemonRunner, "parse_args") + func_patcher_parse_args.start() + self.addCleanup(func_patcher_parse_args.stop) + + # Create a new instance now with our custom patches. + self.test_instance = daemon.runner.DaemonRunner(self.test_app) + + def test_instantiate(self): + """ New instance of DaemonRunner should be created. """ + self.assertIsInstance(self.test_instance, daemon.runner.DaemonRunner) + + def test_parses_commandline_args(self): + """ Should parse commandline arguments. """ + self.test_instance.parse_args.assert_called_with() + + def test_has_specified_app(self): + """ Should have specified application object. """ + self.assertIs(self.test_app, self.test_instance.app) + + def test_sets_pidfile_none_when_pidfile_path_is_none(self): + """ Should set ‘pidfile’ to ‘None’ when ‘pidfile_path’ is ‘None’. """ + pidfile_path = None + self.test_app.pidfile_path = pidfile_path + expected_pidfile = None + instance = daemon.runner.DaemonRunner(self.test_app) + self.assertIs(expected_pidfile, instance.pidfile) + + def test_error_when_pidfile_path_not_string(self): + """ Should raise ValueError when PID file path not a string. """ + pidfile_path = object() + self.test_app.pidfile_path = pidfile_path + expected_error = ValueError + self.assertRaises( + expected_error, + daemon.runner.DaemonRunner, self.test_app) + + def test_error_when_pidfile_path_not_absolute(self): + """ Should raise ValueError when PID file path not absolute. """ + pidfile_path = "foo/bar.pid" + self.test_app.pidfile_path = pidfile_path + expected_error = ValueError + self.assertRaises( + expected_error, + daemon.runner.DaemonRunner, self.test_app) + + def test_creates_lock_with_specified_parameters(self): + """ Should create a TimeoutPIDLockFile with specified params. """ + pidfile_path = self.scenario['pidfile_path'] + pidfile_timeout = self.scenario['pidfile_timeout'] + daemon.pidfile.TimeoutPIDLockFile.assert_called_with( + pidfile_path, pidfile_timeout) + + def test_has_created_pidfile(self): + """ Should have new PID lock file as `pidfile` attribute. """ + expected_pidfile = self.mock_runner_lockfile + instance = self.test_instance + self.assertIs( + expected_pidfile, instance.pidfile) + + def test_daemon_context_has_created_pidfile(self): + """ DaemonContext component should have new PID lock file. """ + expected_pidfile = self.mock_runner_lockfile + daemon_context = self.test_instance.daemon_context + self.assertIs( + expected_pidfile, daemon_context.pidfile) + + def test_daemon_context_has_specified_stdin_stream(self): + """ DaemonContext component should have specified stdin file. """ + test_app = self.test_app + expected_file = self.stream_files_by_name['stdin'] + daemon_context = self.test_instance.daemon_context + self.assertEqual(expected_file, daemon_context.stdin) + + def test_daemon_context_has_stdin_in_read_mode(self): + """ DaemonContext component should open stdin file for read. """ + expected_mode = 'rt' + daemon_context = self.test_instance.daemon_context + self.assertIn(expected_mode, daemon_context.stdin.mode) + + def test_daemon_context_has_specified_stdout_stream(self): + """ DaemonContext component should have specified stdout file. """ + test_app = self.test_app + expected_file = self.stream_files_by_name['stdout'] + daemon_context = self.test_instance.daemon_context + self.assertEqual(expected_file, daemon_context.stdout) + + def test_daemon_context_has_stdout_in_append_mode(self): + """ DaemonContext component should open stdout file for append. """ + expected_mode = 'w+t' + daemon_context = self.test_instance.daemon_context + self.assertIn(expected_mode, daemon_context.stdout.mode) + + def test_daemon_context_has_specified_stderr_stream(self): + """ DaemonContext component should have specified stderr file. """ + test_app = self.test_app + expected_file = self.stream_files_by_name['stderr'] + daemon_context = self.test_instance.daemon_context + self.assertEqual(expected_file, daemon_context.stderr) + + def test_daemon_context_has_stderr_in_append_mode(self): + """ DaemonContext component should open stderr file for append. """ + expected_mode = 'w+t' + daemon_context = self.test_instance.daemon_context + self.assertIn(expected_mode, daemon_context.stderr.mode) + + def test_daemon_context_has_stderr_with_no_buffering(self): + """ DaemonContext component should open stderr file unbuffered. """ + expected_buffering = 0 + daemon_context = self.test_instance.daemon_context + self.assertEqual( + expected_buffering, daemon_context.stderr.buffering) + + +class DaemonRunner_usage_exit_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.usage_exit method. """ + + def test_raises_system_exit(self): + """ Should raise SystemExit exception. """ + instance = self.test_instance + argv = [self.test_program_path] + self.assertRaises( + SystemExit, + instance._usage_exit, argv) + + def test_message_follows_conventional_format(self): + """ Should emit a conventional usage message. """ + instance = self.test_instance + argv = [self.test_program_path] + expected_stderr_output = """\ + usage: {progname} ... + """.format( + progname=self.test_program_name) + self.assertRaises( + SystemExit, + instance._usage_exit, argv) + self.assertOutputCheckerMatch( + expected_stderr_output, self.fake_stderr.getvalue()) + + +class DaemonRunner_parse_args_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.parse_args method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_parse_args_TestCase, self).setUp() + + func_patcher_usage_exit = mock.patch.object( + daemon.runner.DaemonRunner, "_usage_exit", + side_effect=NotImplementedError) + func_patcher_usage_exit.start() + self.addCleanup(func_patcher_usage_exit.stop) + + def test_emits_usage_message_if_insufficient_args(self): + """ Should emit a usage message and exit if too few arguments. """ + instance = self.test_instance + argv = [self.test_program_path] + exc = self.assertRaises( + NotImplementedError, + instance.parse_args, argv) + daemon.runner.DaemonRunner._usage_exit.assert_called_with(argv) + + def test_emits_usage_message_if_unknown_action_arg(self): + """ Should emit a usage message and exit if unknown action. """ + instance = self.test_instance + progname = self.test_program_name + argv = [self.test_program_path, 'bogus'] + exc = self.assertRaises( + NotImplementedError, + instance.parse_args, argv) + daemon.runner.DaemonRunner._usage_exit.assert_called_with(argv) + + def test_should_parse_system_argv_by_default(self): + """ Should parse sys.argv by default. """ + instance = self.test_instance + expected_action = 'start' + argv = self.valid_argv_params['start'] + with mock.patch.object(sys, "argv", new=argv): + instance.parse_args() + self.assertEqual(expected_action, instance.action) + + def test_sets_action_from_first_argument(self): + """ Should set action from first commandline argument. """ + instance = self.test_instance + for name, argv in self.valid_argv_params.items(): + expected_action = name + instance.parse_args(argv) + self.assertEqual(expected_action, instance.action) + + +try: + ProcessLookupError +except NameError: + # Python 2 uses OSError. + ProcessLookupError = functools.partial(OSError, errno.ESRCH) + +class DaemonRunner_do_action_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.do_action method. """ + + def test_raises_error_if_unknown_action(self): + """ Should emit a usage message and exit if action is unknown. """ + instance = self.test_instance + instance.action = 'bogus' + expected_error = daemon.runner.DaemonRunnerInvalidActionError + self.assertRaises( + expected_error, + instance.do_action) + + +class DaemonRunner_do_action_start_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.do_action method, action 'start'. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_do_action_start_TestCase, self).setUp() + + self.test_instance.action = 'start' + + def test_raises_error_if_pidfile_locked(self): + """ Should raise error if PID file is locked. """ + + instance = self.test_instance + instance.daemon_context.open.side_effect = lockfile.AlreadyLocked + pidfile_path = self.scenario['pidfile_path'] + expected_error = daemon.runner.DaemonRunnerStartFailureError + expected_message_content = pidfile_path + exc = self.assertRaises( + expected_error, + instance.do_action) + self.assertIn(expected_message_content, unicode(exc)) + + def test_breaks_lock_if_no_such_process(self): + """ Should request breaking lock if PID file process is not running. """ + set_runner_scenario(self, 'pidfile-locked') + instance = self.test_instance + self.mock_runner_lockfile.read_pid.return_value = ( + self.scenario['pidlockfile_scenario']['pidfile_pid']) + pidfile_path = self.scenario['pidfile_path'] + test_pid = self.scenario['pidlockfile_scenario']['pidfile_pid'] + expected_signal = signal.SIG_DFL + test_error = ProcessLookupError("Not running") + os.kill.side_effect = test_error + instance.do_action() + os.kill.assert_called_with(test_pid, expected_signal) + self.mock_runner_lockfile.break_lock.assert_called_with() + + def test_requests_daemon_context_open(self): + """ Should request the daemon context to open. """ + instance = self.test_instance + instance.do_action() + instance.daemon_context.open.assert_called_with() + + def test_emits_start_message_to_stderr(self): + """ Should emit start message to stderr. """ + instance = self.test_instance + expected_stderr = """\ + started with pid {pid:d} + """.format( + pid=self.scenario['pid']) + instance.do_action() + self.assertOutputCheckerMatch( + expected_stderr, self.fake_stderr.getvalue()) + + def test_requests_app_run(self): + """ Should request the application to run. """ + instance = self.test_instance + instance.do_action() + self.test_app.run.assert_called_with() + + +class DaemonRunner_do_action_stop_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.do_action method, action 'stop'. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_do_action_stop_TestCase, self).setUp() + + set_runner_scenario(self, 'pidfile-locked') + + self.test_instance.action = 'stop' + + self.mock_runner_lockfile.is_locked.return_value = True + self.mock_runner_lockfile.i_am_locking.return_value = False + self.mock_runner_lockfile.read_pid.return_value = ( + self.scenario['pidlockfile_scenario']['pidfile_pid']) + + def test_raises_error_if_pidfile_not_locked(self): + """ Should raise error if PID file is not locked. """ + set_runner_scenario(self, 'simple') + instance = self.test_instance + self.mock_runner_lockfile.is_locked.return_value = False + self.mock_runner_lockfile.i_am_locking.return_value = False + self.mock_runner_lockfile.read_pid.return_value = ( + self.scenario['pidlockfile_scenario']['pidfile_pid']) + pidfile_path = self.scenario['pidfile_path'] + expected_error = daemon.runner.DaemonRunnerStopFailureError + expected_message_content = pidfile_path + exc = self.assertRaises( + expected_error, + instance.do_action) + self.assertIn(expected_message_content, unicode(exc)) + + def test_breaks_lock_if_pidfile_stale(self): + """ Should break lock if PID file is stale. """ + instance = self.test_instance + pidfile_path = self.scenario['pidfile_path'] + test_pid = self.scenario['pidlockfile_scenario']['pidfile_pid'] + expected_signal = signal.SIG_DFL + test_error = OSError(errno.ESRCH, "Not running") + os.kill.side_effect = test_error + instance.do_action() + self.mock_runner_lockfile.break_lock.assert_called_with() + + def test_sends_terminate_signal_to_process_from_pidfile(self): + """ Should send SIGTERM to the daemon process. """ + instance = self.test_instance + test_pid = self.scenario['pidlockfile_scenario']['pidfile_pid'] + expected_signal = signal.SIGTERM + instance.do_action() + os.kill.assert_called_with(test_pid, expected_signal) + + def test_raises_error_if_cannot_send_signal_to_process(self): + """ Should raise error if cannot send signal to daemon process. """ + instance = self.test_instance + test_pid = self.scenario['pidlockfile_scenario']['pidfile_pid'] + pidfile_path = self.scenario['pidfile_path'] + test_error = OSError(errno.EPERM, "Nice try") + os.kill.side_effect = test_error + expected_error = daemon.runner.DaemonRunnerStopFailureError + expected_message_content = unicode(test_pid) + exc = self.assertRaises( + expected_error, + instance.do_action) + self.assertIn(expected_message_content, unicode(exc)) + + +@mock.patch.object(daemon.runner.DaemonRunner, "_start") +@mock.patch.object(daemon.runner.DaemonRunner, "_stop") +class DaemonRunner_do_action_restart_TestCase(DaemonRunner_BaseTestCase): + """ Test cases for DaemonRunner.do_action method, action 'restart'. """ + + def setUp(self): + """ Set up test fixtures. """ + super(DaemonRunner_do_action_restart_TestCase, self).setUp() + + set_runner_scenario(self, 'pidfile-locked') + + self.test_instance.action = 'restart' + + def test_requests_stop_then_start( + self, + mock_func_daemonrunner_start, mock_func_daemonrunner_stop): + """ Should request stop, then start. """ + instance = self.test_instance + instance.do_action() + mock_func_daemonrunner_start.assert_called_with() + mock_func_daemonrunner_stop.assert_called_with() + + +@mock.patch.object(sys, "stderr") +class emit_message_TestCase(scaffold.TestCase): + """ Test cases for ‘emit_message’ function. """ + + def test_writes_specified_message_to_stream(self, mock_stderr): + """ Should write specified message to stream. """ + test_message = self.getUniqueString() + expected_content = "{message}\n".format(message=test_message) + daemon.runner.emit_message(test_message, stream=mock_stderr) + mock_stderr.write.assert_called_with(expected_content) + + def test_writes_to_specified_stream(self, mock_stderr): + """ Should write message to specified stream. """ + test_message = self.getUniqueString() + mock_stream = mock.MagicMock() + daemon.runner.emit_message(test_message, stream=mock_stream) + mock_stream.write.assert_called_with(mock.ANY) + + def test_writes_to_stderr_by_default(self, mock_stderr): + """ Should write message to ‘sys.stderr’ by default. """ + test_message = self.getUniqueString() + daemon.runner.emit_message(test_message) + mock_stderr.write.assert_called_with(mock.ANY) + + +class is_pidfile_stale_TestCase(scaffold.TestCase): + """ Test cases for ‘is_pidfile_stale’ function. """ + + def setUp(self): + """ Set up test fixtures. """ + super(is_pidfile_stale_TestCase, self).setUp() + + func_patcher_os_kill = mock.patch.object(os, "kill") + func_patcher_os_kill.start() + self.addCleanup(func_patcher_os_kill.stop) + os.kill.return_value = None + + self.test_pid = self.getUniqueInteger() + self.test_pidfile = mock.MagicMock(daemon.pidfile.TimeoutPIDLockFile) + self.test_pidfile.read_pid.return_value = self.test_pid + + def test_returns_false_if_no_pid_in_file(self): + """ Should return False if the pidfile contains no PID. """ + self.test_pidfile.read_pid.return_value = None + expected_result = False + result = daemon.runner.is_pidfile_stale(self.test_pidfile) + self.assertEqual(expected_result, result) + + def test_returns_false_if_process_exists(self): + """ Should return False if the process with its PID exists. """ + expected_result = False + result = daemon.runner.is_pidfile_stale(self.test_pidfile) + self.assertEqual(expected_result, result) + + def test_returns_true_if_process_does_not_exist(self): + """ Should return True if the process does not exist. """ + test_error = ProcessLookupError("No such process") + del os.kill.return_value + os.kill.side_effect = test_error + expected_result = True + result = daemon.runner.is_pidfile_stale(self.test_pidfile) + self.assertEqual(expected_result, result) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/test_version.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,1373 @@ +# -*- coding: utf-8 -*- +# +# test_version.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; version 3 of that license or any later version. +# No warranty expressed or implied. See the file ‘LICENSE.GPL-3’ for details. + +""" Unit test for ‘version’ packaging module. """ + +from __future__ import (absolute_import, unicode_literals) + +import os +import os.path +import io +import errno +import functools +import collections +import textwrap +import json +import tempfile +import distutils.dist +import distutils.cmd +import distutils.errors +import distutils.fancy_getopt +try: + # Standard library of Python 2.7 and later. + from io import StringIO +except ImportError: + # Standard library of Python 2.6 and earlier. + from StringIO import StringIO + +import mock +import testtools +import testscenarios +import docutils +import docutils.writers +import docutils.nodes +import setuptools +import setuptools.command + +import version + +version.ensure_class_bases_begin_with( + version.__dict__, str('VersionInfoWriter'), docutils.writers.Writer) +version.ensure_class_bases_begin_with( + version.__dict__, str('VersionInfoTranslator'), + docutils.nodes.SparseNodeVisitor) + + +def make_test_classes_for_ensure_class_bases_begin_with(): + """ Make test classes for use with ‘ensure_class_bases_begin_with’. + + :return: Mapping {`name`: `type`} of the custom types created. + + """ + + class quux_metaclass(type): + def __new__(metaclass, name, bases, namespace): + return super(quux_metaclass, metaclass).__new__( + metaclass, name, bases, namespace) + + class Foo(object): + __metaclass__ = type + + class Bar(object): + pass + + class FooInheritingBar(Bar): + __metaclass__ = type + + class FooWithCustomMetaclass(object): + __metaclass__ = quux_metaclass + + result = dict( + (name, value) for (name, value) in locals().items() + if isinstance(value, type)) + + return result + +class ensure_class_bases_begin_with_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ensure_class_bases_begin_with’ function. """ + + test_classes = make_test_classes_for_ensure_class_bases_begin_with() + + scenarios = [ + ('simple', { + 'test_class': test_classes['Foo'], + 'base_class': test_classes['Bar'], + }), + ('custom metaclass', { + 'test_class': test_classes['FooWithCustomMetaclass'], + 'base_class': test_classes['Bar'], + 'expected_metaclass': test_classes['quux_metaclass'], + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(ensure_class_bases_begin_with_TestCase, self).setUp() + + self.class_name = self.test_class.__name__ + self.test_module_namespace = {self.class_name: self.test_class} + + if not hasattr(self, 'expected_metaclass'): + self.expected_metaclass = type + + patcher_metaclass = mock.patch.object( + self.test_class, '__metaclass__') + patcher_metaclass.start() + self.addCleanup(patcher_metaclass.stop) + + self.fake_new_class = type(object) + self.test_class.__metaclass__.return_value = ( + self.fake_new_class) + + def test_module_namespace_contains_new_class(self): + """ Specified module namespace should have new class. """ + version.ensure_class_bases_begin_with( + self.test_module_namespace, self.class_name, self.base_class) + self.assertIn(self.fake_new_class, self.test_module_namespace.values()) + + def test_calls_metaclass_with_expected_class_name(self): + """ Should call the metaclass with the expected class name. """ + version.ensure_class_bases_begin_with( + self.test_module_namespace, self.class_name, self.base_class) + expected_class_name = self.class_name + self.test_class.__metaclass__.assert_called_with( + expected_class_name, mock.ANY, mock.ANY) + + def test_calls_metaclass_with_expected_bases(self): + """ Should call the metaclass with the expected bases. """ + version.ensure_class_bases_begin_with( + self.test_module_namespace, self.class_name, self.base_class) + expected_bases = tuple( + [self.base_class] + + list(self.test_class.__bases__)) + self.test_class.__metaclass__.assert_called_with( + mock.ANY, expected_bases, mock.ANY) + + def test_calls_metaclass_with_expected_namespace(self): + """ Should call the metaclass with the expected class namespace. """ + version.ensure_class_bases_begin_with( + self.test_module_namespace, self.class_name, self.base_class) + expected_namespace = self.test_class.__dict__.copy() + del expected_namespace['__dict__'] + self.test_class.__metaclass__.assert_called_with( + mock.ANY, mock.ANY, expected_namespace) + + +class ensure_class_bases_begin_with_AlreadyHasBase_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ensure_class_bases_begin_with’ function. + + These test cases test the conditions where the class's base is + already the specified base class. + + """ + + test_classes = make_test_classes_for_ensure_class_bases_begin_with() + + scenarios = [ + ('already Bar subclass', { + 'test_class': test_classes['FooInheritingBar'], + 'base_class': test_classes['Bar'], + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super( + ensure_class_bases_begin_with_AlreadyHasBase_TestCase, + self).setUp() + + self.class_name = self.test_class.__name__ + self.test_module_namespace = {self.class_name: self.test_class} + + patcher_metaclass = mock.patch.object( + self.test_class, '__metaclass__') + patcher_metaclass.start() + self.addCleanup(patcher_metaclass.stop) + + def test_metaclass_not_called(self): + """ Should not call metaclass to create a new type. """ + version.ensure_class_bases_begin_with( + self.test_module_namespace, self.class_name, self.base_class) + self.assertFalse(self.test_class.__metaclass__.called) + + +class VersionInfoWriter_TestCase(testtools.TestCase): + """ Test cases for ‘VersionInfoWriter’ class. """ + + def setUp(self): + """ Set up test fixtures. """ + super(VersionInfoWriter_TestCase, self).setUp() + + self.test_instance = version.VersionInfoWriter() + + def test_declares_version_info_support(self): + """ Should declare support for ‘version_info’. """ + instance = self.test_instance + expected_support = "version_info" + result = instance.supports(expected_support) + self.assertTrue(result) + + +class VersionInfoWriter_translate_TestCase(testtools.TestCase): + """ Test cases for ‘VersionInfoWriter.translate’ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(VersionInfoWriter_translate_TestCase, self).setUp() + + patcher_translator = mock.patch.object( + version, 'VersionInfoTranslator') + self.mock_class_translator = patcher_translator.start() + self.addCleanup(patcher_translator.stop) + self.mock_translator = self.mock_class_translator.return_value + + self.test_instance = version.VersionInfoWriter() + patcher_document = mock.patch.object( + self.test_instance, 'document') + patcher_document.start() + self.addCleanup(patcher_document.stop) + + def test_creates_translator_with_document(self): + """ Should create a translator with the writer's document. """ + instance = self.test_instance + expected_document = self.test_instance.document + instance.translate() + self.mock_class_translator.assert_called_with(expected_document) + + def test_calls_document_walkabout_with_translator(self): + """ Should call document.walkabout with the translator. """ + instance = self.test_instance + instance.translate() + instance.document.walkabout.assert_called_with(self.mock_translator) + + def test_output_from_translator_astext(self): + """ Should have output from translator.astext(). """ + instance = self.test_instance + instance.translate() + expected_output = self.mock_translator.astext.return_value + self.assertEqual(expected_output, instance.output) + + +class ChangeLogEntry_TestCase(testtools.TestCase): + """ Test cases for ‘ChangeLogEntry’ class. """ + + def setUp(self): + """ Set up test fixtures. """ + super(ChangeLogEntry_TestCase, self).setUp() + + self.test_instance = version.ChangeLogEntry() + + def test_instantiate(self): + """ New instance of ‘ChangeLogEntry’ should be created. """ + self.assertIsInstance( + self.test_instance, version.ChangeLogEntry) + + def test_minimum_zero_arguments(self): + """ Initialiser should not require any arguments. """ + instance = version.ChangeLogEntry() + self.assertIsNot(instance, None) + + +class ChangeLogEntry_release_date_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ChangeLogEntry.release_date’ attribute. """ + + scenarios = [ + ('default', { + 'test_args': {}, + 'expected_release_date': + version.ChangeLogEntry.default_release_date, + }), + ('unknown token', { + 'test_args': {'release_date': "UNKNOWN"}, + 'expected_release_date': "UNKNOWN", + }), + ('future token', { + 'test_args': {'release_date': "FUTURE"}, + 'expected_release_date': "FUTURE", + }), + ('2001-01-01', { + 'test_args': {'release_date': "2001-01-01"}, + 'expected_release_date': "2001-01-01", + }), + ('bogus', { + 'test_args': {'release_date': "b0gUs"}, + 'expected_error': ValueError, + }), + ] + + def test_has_expected_release_date(self): + """ Should have default `release_date` attribute. """ + if hasattr(self, 'expected_error'): + self.assertRaises( + self.expected_error, + version.ChangeLogEntry, **self.test_args) + else: + instance = version.ChangeLogEntry(**self.test_args) + self.assertEqual(self.expected_release_date, instance.release_date) + + +class ChangeLogEntry_version_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ChangeLogEntry.version’ attribute. """ + + scenarios = [ + ('default', { + 'test_args': {}, + 'expected_version': + version.ChangeLogEntry.default_version, + }), + ('unknown token', { + 'test_args': {'version': "UNKNOWN"}, + 'expected_version': "UNKNOWN", + }), + ('0.0', { + 'test_args': {'version': "0.0"}, + 'expected_version': "0.0", + }), + ] + + def test_has_expected_version(self): + """ Should have default `version` attribute. """ + instance = version.ChangeLogEntry(**self.test_args) + self.assertEqual(self.expected_version, instance.version) + + +class ChangeLogEntry_maintainer_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ChangeLogEntry.maintainer’ attribute. """ + + scenarios = [ + ('default', { + 'test_args': {}, + 'expected_maintainer': None, + }), + ('person', { + 'test_args': {'maintainer': "Foo Bar <foo.bar@example.org>"}, + 'expected_maintainer': "Foo Bar <foo.bar@example.org>", + }), + ('bogus', { + 'test_args': {'maintainer': "b0gUs"}, + 'expected_error': ValueError, + }), + ] + + def test_has_expected_maintainer(self): + """ Should have default `maintainer` attribute. """ + if hasattr(self, 'expected_error'): + self.assertRaises( + self.expected_error, + version.ChangeLogEntry, **self.test_args) + else: + instance = version.ChangeLogEntry(**self.test_args) + self.assertEqual(self.expected_maintainer, instance.maintainer) + + +class ChangeLogEntry_body_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ChangeLogEntry.body’ attribute. """ + + scenarios = [ + ('default', { + 'test_args': {}, + 'expected_body': None, + }), + ('simple', { + 'test_args': {'body': "Foo bar baz."}, + 'expected_body': "Foo bar baz.", + }), + ] + + def test_has_expected_body(self): + """ Should have default `body` attribute. """ + instance = version.ChangeLogEntry(**self.test_args) + self.assertEqual(self.expected_body, instance.body) + + +class ChangeLogEntry_as_version_info_entry_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘ChangeLogEntry.as_version_info_entry’ attribute. """ + + scenarios = [ + ('default', { + 'test_args': {}, + 'expected_result': collections.OrderedDict([ + ('release_date', version.ChangeLogEntry.default_release_date), + ('version', version.ChangeLogEntry.default_version), + ('maintainer', None), + ('body', None), + ]), + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(ChangeLogEntry_as_version_info_entry_TestCase, self).setUp() + + self.test_instance = version.ChangeLogEntry(**self.test_args) + + def test_returns_result(self): + """ Should return expected result. """ + result = self.test_instance.as_version_info_entry() + self.assertEqual(self.expected_result, result) + + +def make_mock_field_node(field_name, field_body): + """ Make a mock Docutils field node for tests. """ + + mock_field_node = mock.MagicMock( + name='field', spec=docutils.nodes.field) + + mock_field_name_node = mock.MagicMock( + name='field_name', spec=docutils.nodes.field_name) + mock_field_name_node.parent = mock_field_node + mock_field_name_node.children = [field_name] + + mock_field_body_node = mock.MagicMock( + name='field_body', spec=docutils.nodes.field_body) + mock_field_body_node.parent = mock_field_node + mock_field_body_node.children = [field_body] + + mock_field_node.children = [mock_field_name_node, mock_field_body_node] + + def fake_func_first_child_matching_class(node_class): + result = None + node_class_name = node_class.__name__ + for (index, node) in enumerate(mock_field_node.children): + if node._mock_name == node_class_name: + result = index + break + return result + + mock_field_node.first_child_matching_class.side_effect = ( + fake_func_first_child_matching_class) + + return mock_field_node + + +class JsonEqual(testtools.matchers.Matcher): + """ A matcher to compare the value of JSON streams. """ + + def __init__(self, expected): + self.expected_value = expected + + def match(self, content): + """ Assert the JSON `content` matches the `expected_content`. """ + result = None + actual_value = json.loads(content.decode('utf-8')) + if actual_value != self.expected_value: + result = JsonValueMismatch(self.expected_value, actual_value) + return result + + +class JsonValueMismatch(testtools.matchers.Mismatch): + """ The specified JSON stream does not evaluate to the expected value. """ + + def __init__(self, expected, actual): + self.expected_value = expected + self.actual_value = actual + + def describe(self): + """ Emit a text description of this mismatch. """ + expected_json_text = json.dumps(self.expected_value, indent=4) + actual_json_text = json.dumps(self.actual_value, indent=4) + text = ( + "\n" + "reference: {expected}\n" + "actual: {actual}\n").format( + expected=expected_json_text, actual=actual_json_text) + return text + + +class changelog_to_version_info_collection_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘changelog_to_version_info_collection’ function. """ + + scenarios = [ + ('single entry', { + 'test_input': textwrap.dedent("""\ + Version 1.0 + =========== + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + """), + 'expected_version_info': [ + { + 'release_date': "2009-01-01", + 'version': "1.0", + 'maintainer': "Foo Bar <foo.bar@example.org>", + 'body': "* Lorem ipsum dolor sit amet.\n", + }, + ], + }), + ('multiple entries', { + 'test_input': textwrap.dedent("""\ + Version 1.0 + =========== + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + + + Version 0.8 + =========== + + :Released: 2004-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Donec venenatis nisl aliquam ipsum. + + + Version 0.7.2 + ============= + + :Released: 2001-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Pellentesque elementum mollis finibus. + """), + 'expected_version_info': [ + { + 'release_date': "2009-01-01", + 'version': "1.0", + 'maintainer': "Foo Bar <foo.bar@example.org>", + 'body': "* Lorem ipsum dolor sit amet.\n", + }, + { + 'release_date': "2004-01-01", + 'version': "0.8", + 'maintainer': "Foo Bar <foo.bar@example.org>", + 'body': "* Donec venenatis nisl aliquam ipsum.\n", + }, + { + 'release_date': "2001-01-01", + 'version': "0.7.2", + 'maintainer': "Foo Bar <foo.bar@example.org>", + 'body': "* Pellentesque elementum mollis finibus.\n", + }, + ], + }), + ('trailing comment', { + 'test_input': textwrap.dedent("""\ + Version NEXT + ============ + + :Released: FUTURE + :Maintainer: + + * Lorem ipsum dolor sit amet. + + .. + Vivamus aliquam felis rutrum rutrum dictum. + """), + 'expected_version_info': [ + { + 'release_date': "FUTURE", + 'version': "NEXT", + 'maintainer': "", + 'body': "* Lorem ipsum dolor sit amet.\n", + }, + ], + }), + ('inline comment', { + 'test_input': textwrap.dedent("""\ + Version NEXT + ============ + + :Released: FUTURE + :Maintainer: + + .. + Vivamus aliquam felis rutrum rutrum dictum. + + * Lorem ipsum dolor sit amet. + """), + 'expected_version_info': [ + { + 'release_date': "FUTURE", + 'version': "NEXT", + 'maintainer': "", + 'body': "* Lorem ipsum dolor sit amet.\n", + }, + ], + }), + ('unreleased entry', { + 'test_input': textwrap.dedent("""\ + Version NEXT + ============ + + :Released: FUTURE + :Maintainer: + + * Lorem ipsum dolor sit amet. + + + Version 0.8 + =========== + + :Released: 2001-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Donec venenatis nisl aliquam ipsum. + """), + 'expected_version_info': [ + { + 'release_date': "FUTURE", + 'version': "NEXT", + 'maintainer': "", + 'body': "* Lorem ipsum dolor sit amet.\n", + }, + { + 'release_date': "2001-01-01", + 'version': "0.8", + 'maintainer': "Foo Bar <foo.bar@example.org>", + 'body': "* Donec venenatis nisl aliquam ipsum.\n", + }, + ], + }), + ('no section', { + 'test_input': textwrap.dedent("""\ + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + """), + 'expected_error': version.InvalidFormatError, + }), + ('subsection', { + 'test_input': textwrap.dedent("""\ + Version 1.0 + =========== + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + + Ut ultricies fermentum quam + --------------------------- + + * In commodo magna facilisis in. + """), + 'expected_error': version.InvalidFormatError, + 'subsection': True, + }), + ('unknown field', { + 'test_input': textwrap.dedent("""\ + Version 1.0 + =========== + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + :Favourite: Spam + + * Lorem ipsum dolor sit amet. + """), + 'expected_error': version.InvalidFormatError, + }), + ('invalid version word', { + 'test_input': textwrap.dedent("""\ + BoGuS 1.0 + ========= + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + """), + 'expected_error': version.InvalidFormatError, + }), + ('invalid section title', { + 'test_input': textwrap.dedent("""\ + Lorem Ipsum 1.0 + =============== + + :Released: 2009-01-01 + :Maintainer: Foo Bar <foo.bar@example.org> + + * Lorem ipsum dolor sit amet. + """), + 'expected_error': version.InvalidFormatError, + }), + ] + + def test_returns_expected_version_info(self): + """ Should return expected version info mapping. """ + infile = StringIO(self.test_input) + if hasattr(self, 'expected_error'): + self.assertRaises( + self.expected_error, + version.changelog_to_version_info_collection, infile) + else: + result = version.changelog_to_version_info_collection(infile) + self.assertThat(result, JsonEqual(self.expected_version_info)) + + +try: + FileNotFoundError + PermissionError +except NameError: + # Python 2 uses OSError. + FileNotFoundError = functools.partial(IOError, errno.ENOENT) + PermissionError = functools.partial(IOError, errno.EPERM) + +fake_version_info = { + 'release_date': "2001-01-01", 'version': "2.0", + 'maintainer': None, 'body': None, + } + +@mock.patch.object( + version, "get_latest_version", return_value=fake_version_info) +class generate_version_info_from_changelog_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘generate_version_info_from_changelog’ function. """ + + fake_open_side_effects = { + 'success': ( + lambda *args, **kwargs: StringIO()), + 'file not found': FileNotFoundError(), + 'permission denied': PermissionError(), + } + + scenarios = [ + ('simple', { + 'open_scenario': 'success', + 'fake_versions_json': json.dumps([fake_version_info]), + 'expected_result': fake_version_info, + }), + ('file not found', { + 'open_scenario': 'file not found', + 'expected_result': {}, + }), + ('permission denied', { + 'open_scenario': 'permission denied', + 'expected_result': {}, + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(generate_version_info_from_changelog_TestCase, self).setUp() + + self.fake_changelog_file_path = tempfile.mktemp() + + def fake_open(filespec, *args, **kwargs): + if filespec == self.fake_changelog_file_path: + side_effect = self.fake_open_side_effects[self.open_scenario] + if callable(side_effect): + result = side_effect() + else: + raise side_effect + else: + result = StringIO() + return result + + func_patcher_io_open = mock.patch.object( + io, "open") + func_patcher_io_open.start() + self.addCleanup(func_patcher_io_open.stop) + io.open.side_effect = fake_open + + self.file_encoding = "utf-8" + + func_patcher_changelog_to_version_info_collection = mock.patch.object( + version, "changelog_to_version_info_collection") + func_patcher_changelog_to_version_info_collection.start() + self.addCleanup(func_patcher_changelog_to_version_info_collection.stop) + if hasattr(self, 'fake_versions_json'): + version.changelog_to_version_info_collection.return_value = ( + self.fake_versions_json.encode(self.file_encoding)) + + def test_returns_empty_collection_on_read_error( + self, + mock_func_get_latest_version): + """ Should return empty collection on error reading changelog. """ + test_error = PermissionError("Not for you") + version.changelog_to_version_info_collection.side_effect = test_error + result = version.generate_version_info_from_changelog( + self.fake_changelog_file_path) + expected_result = {} + self.assertDictEqual(expected_result, result) + + def test_opens_file_with_expected_encoding( + self, + mock_func_get_latest_version): + """ Should open changelog file in text mode with expected encoding. """ + result = version.generate_version_info_from_changelog( + self.fake_changelog_file_path) + expected_file_path = self.fake_changelog_file_path + expected_open_mode = 'rt' + expected_encoding = self.file_encoding + (open_args_positional, open_args_kwargs) = io.open.call_args + (open_args_filespec, open_args_mode) = open_args_positional[:2] + open_args_encoding = open_args_kwargs['encoding'] + self.assertEqual(expected_file_path, open_args_filespec) + self.assertEqual(expected_open_mode, open_args_mode) + self.assertEqual(expected_encoding, open_args_encoding) + + def test_returns_expected_result( + self, + mock_func_get_latest_version): + """ Should return expected result. """ + result = version.generate_version_info_from_changelog( + self.fake_changelog_file_path) + self.assertEqual(self.expected_result, result) + + +DefaultNoneDict = functools.partial(collections.defaultdict, lambda: None) + +class get_latest_version_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘get_latest_version’ function. """ + + scenarios = [ + ('simple', { + 'test_versions': [ + DefaultNoneDict({'release_date': "LATEST"}), + ], + 'expected_result': version.ChangeLogEntry.make_ordered_dict( + DefaultNoneDict({'release_date': "LATEST"})), + }), + ('no versions', { + 'test_versions': [], + 'expected_result': collections.OrderedDict(), + }), + ('ordered versions', { + 'test_versions': [ + DefaultNoneDict({'release_date': "1"}), + DefaultNoneDict({'release_date': "2"}), + DefaultNoneDict({'release_date': "LATEST"}), + ], + 'expected_result': version.ChangeLogEntry.make_ordered_dict( + DefaultNoneDict({'release_date': "LATEST"})), + }), + ('un-ordered versions', { + 'test_versions': [ + DefaultNoneDict({'release_date': "2"}), + DefaultNoneDict({'release_date': "LATEST"}), + DefaultNoneDict({'release_date': "1"}), + ], + 'expected_result': version.ChangeLogEntry.make_ordered_dict( + DefaultNoneDict({'release_date': "LATEST"})), + }), + ] + + def test_returns_expected_result(self): + """ Should return expected result. """ + result = version.get_latest_version(self.test_versions) + self.assertDictEqual(self.expected_result, result) + + +@mock.patch.object(json, "dumps", side_effect=json.dumps) +class serialise_version_info_from_mapping_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘get_latest_version’ function. """ + + scenarios = [ + ('simple', { + 'test_version_info': {'foo': "spam"}, + }), + ] + + for (name, scenario) in scenarios: + scenario['fake_json_dump'] = json.dumps(scenario['test_version_info']) + scenario['expected_value'] = scenario['test_version_info'] + + def test_passes_specified_object(self, mock_func_json_dumps): + """ Should pass the specified object to `json.dumps`. """ + result = version.serialise_version_info_from_mapping( + self.test_version_info) + mock_func_json_dumps.assert_called_with( + self.test_version_info, indent=mock.ANY) + + def test_returns_expected_result(self, mock_func_json_dumps): + """ Should return expected result. """ + mock_func_json_dumps.return_value = self.fake_json_dump + result = version.serialise_version_info_from_mapping( + self.test_version_info) + value = json.loads(result) + self.assertEqual(self.expected_value, value) + + +DistributionMetadata_defaults = { + name: None + for name in list(collections.OrderedDict.fromkeys( + distutils.dist.DistributionMetadata._METHOD_BASENAMES))} +FakeDistributionMetadata = collections.namedtuple( + 'FakeDistributionMetadata', DistributionMetadata_defaults.keys()) + +Distribution_defaults = { + 'metadata': None, + 'version': None, + 'release_date': None, + 'maintainer': None, + 'maintainer_email': None, + } +FakeDistribution = collections.namedtuple( + 'FakeDistribution', Distribution_defaults.keys()) + +def make_fake_distribution( + fields_override=None, metadata_fields_override=None): + metadata_fields = DistributionMetadata_defaults.copy() + if metadata_fields_override is not None: + metadata_fields.update(metadata_fields_override) + metadata = FakeDistributionMetadata(**metadata_fields) + + fields = Distribution_defaults.copy() + fields['metadata'] = metadata + if fields_override is not None: + fields.update(fields_override) + distribution = FakeDistribution(**fields) + + return distribution + + +class get_changelog_path_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘get_changelog_path’ function. """ + + default_path = "." + default_script_filename = "setup.py" + + scenarios = [ + ('simple', {}), + ('unusual script name', { + 'script_filename': "lorem_ipsum", + }), + ('relative script path', { + 'script_directory': "dolor/sit/amet", + }), + ('absolute script path', { + 'script_directory': "/dolor/sit/amet", + }), + ('specify filename', { + 'changelog_filename': "adipiscing", + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(get_changelog_path_TestCase, self).setUp() + + self.test_distribution = mock.MagicMock(distutils.dist.Distribution) + + if not hasattr(self, 'script_directory'): + self.script_directory = self.default_path + if not hasattr(self, 'script_filename'): + self.script_filename = self.default_script_filename + self.test_distribution.script_name = os.path.join( + self.script_directory, self.script_filename) + + changelog_filename = version.changelog_filename + if hasattr(self, 'changelog_filename'): + changelog_filename = self.changelog_filename + + self.expected_result = os.path.join( + self.script_directory, changelog_filename) + + def test_returns_expected_result(self): + """ Should return expected result. """ + args = { + 'distribution': self.test_distribution, + } + if hasattr(self, 'changelog_filename'): + args.update({'filename': self.changelog_filename}) + result = version.get_changelog_path(**args) + self.assertEqual(self.expected_result, result) + + +class WriteVersionInfoCommand_BaseTestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Base class for ‘WriteVersionInfoCommand’ test case classes. """ + + def setUp(self): + """ Set up test fixtures. """ + super(WriteVersionInfoCommand_BaseTestCase, self).setUp() + + fake_distribution_name = self.getUniqueString() + + self.test_distribution = distutils.dist.Distribution() + self.test_distribution.metadata.name = fake_distribution_name + + +class WriteVersionInfoCommand_TestCase(WriteVersionInfoCommand_BaseTestCase): + """ Test cases for ‘WriteVersionInfoCommand’ class. """ + + def test_subclass_of_distutils_command(self): + """ Should be a subclass of ‘distutils.cmd.Command’. """ + instance = version.WriteVersionInfoCommand(self.test_distribution) + self.assertIsInstance(instance, distutils.cmd.Command) + + +class WriteVersionInfoCommand_user_options_TestCase( + WriteVersionInfoCommand_BaseTestCase): + """ Test cases for ‘WriteVersionInfoCommand.user_options’ attribute. """ + + def setUp(self): + """ Set up test fixtures. """ + super(WriteVersionInfoCommand_user_options_TestCase, self).setUp() + + self.test_instance = version.WriteVersionInfoCommand( + self.test_distribution) + self.commandline_parser = distutils.fancy_getopt.FancyGetopt( + self.test_instance.user_options) + + def test_parses_correctly_as_fancy_getopt(self): + """ Should parse correctly in ‘FancyGetopt’. """ + self.assertIsInstance( + self.commandline_parser, distutils.fancy_getopt.FancyGetopt) + + def test_includes_base_class_user_options(self): + """ Should include base class's user_options. """ + base_command = setuptools.command.egg_info.egg_info + expected_user_options = base_command.user_options + self.assertThat( + set(expected_user_options), + IsSubset(set(self.test_instance.user_options))) + + def test_has_option_changelog_path(self): + """ Should have a ‘changelog-path’ option. """ + expected_option_name = "changelog-path=" + result = self.commandline_parser.has_option(expected_option_name) + self.assertTrue(result) + + def test_has_option_outfile_path(self): + """ Should have a ‘outfile-path’ option. """ + expected_option_name = "outfile-path=" + result = self.commandline_parser.has_option(expected_option_name) + self.assertTrue(result) + + +class WriteVersionInfoCommand_initialize_options_TestCase( + WriteVersionInfoCommand_BaseTestCase): + """ Test cases for ‘WriteVersionInfoCommand.initialize_options’ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super( + WriteVersionInfoCommand_initialize_options_TestCase, self + ).setUp() + + patcher_func_egg_info_initialize_options = mock.patch.object( + setuptools.command.egg_info.egg_info, "initialize_options") + patcher_func_egg_info_initialize_options.start() + self.addCleanup(patcher_func_egg_info_initialize_options.stop) + + def test_calls_base_class_method(self): + """ Should call base class's ‘initialize_options’ method. """ + instance = version.WriteVersionInfoCommand(self.test_distribution) + base_command_class = setuptools.command.egg_info.egg_info + base_command_class.initialize_options.assert_called_with() + + def test_sets_changelog_path_to_none(self): + """ Should set ‘changelog_path’ attribute to ``None``. """ + instance = version.WriteVersionInfoCommand(self.test_distribution) + self.assertIs(instance.changelog_path, None) + + def test_sets_outfile_path_to_none(self): + """ Should set ‘outfile_path’ attribute to ``None``. """ + instance = version.WriteVersionInfoCommand(self.test_distribution) + self.assertIs(instance.outfile_path, None) + + +class WriteVersionInfoCommand_finalize_options_TestCase( + WriteVersionInfoCommand_BaseTestCase): + """ Test cases for ‘WriteVersionInfoCommand.finalize_options’ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(WriteVersionInfoCommand_finalize_options_TestCase, self).setUp() + + self.test_instance = version.WriteVersionInfoCommand(self.test_distribution) + + patcher_func_egg_info_finalize_options = mock.patch.object( + setuptools.command.egg_info.egg_info, "finalize_options") + patcher_func_egg_info_finalize_options.start() + self.addCleanup(patcher_func_egg_info_finalize_options.stop) + + self.fake_script_dir = self.getUniqueString() + self.test_distribution.script_name = os.path.join( + self.fake_script_dir, self.getUniqueString()) + + self.fake_egg_dir = self.getUniqueString() + self.test_instance.egg_info = self.fake_egg_dir + + patcher_func_get_changelog_path = mock.patch.object( + version, "get_changelog_path") + patcher_func_get_changelog_path.start() + self.addCleanup(patcher_func_get_changelog_path.stop) + + self.fake_changelog_path = self.getUniqueString() + version.get_changelog_path.return_value = self.fake_changelog_path + + def test_calls_base_class_method(self): + """ Should call base class's ‘finalize_options’ method. """ + base_command_class = setuptools.command.egg_info.egg_info + self.test_instance.finalize_options() + base_command_class.finalize_options.assert_called_with() + + def test_sets_force_to_none(self): + """ Should set ‘force’ attribute to ``None``. """ + self.test_instance.finalize_options() + self.assertIs(self.test_instance.force, None) + + def test_sets_changelog_path_using_get_changelog_path(self): + """ Should set ‘changelog_path’ attribute if it was ``None``. """ + self.test_instance.changelog_path = None + self.test_instance.finalize_options() + expected_changelog_path = self.fake_changelog_path + self.assertEqual(expected_changelog_path, self.test_instance.changelog_path) + + def test_leaves_changelog_path_if_already_set(self): + """ Should leave ‘changelog_path’ attribute set. """ + prior_changelog_path = self.getUniqueString() + self.test_instance.changelog_path = prior_changelog_path + self.test_instance.finalize_options() + expected_changelog_path = prior_changelog_path + self.assertEqual(expected_changelog_path, self.test_instance.changelog_path) + + def test_sets_outfile_path_to_default(self): + """ Should set ‘outfile_path’ attribute to default value. """ + fake_version_info_filename = self.getUniqueString() + with mock.patch.object( + version, "version_info_filename", + new=fake_version_info_filename): + self.test_instance.finalize_options() + expected_outfile_path = os.path.join( + self.fake_egg_dir, fake_version_info_filename) + self.assertEqual(expected_outfile_path, self.test_instance.outfile_path) + + def test_leaves_outfile_path_if_already_set(self): + """ Should leave ‘outfile_path’ attribute set. """ + prior_outfile_path = self.getUniqueString() + self.test_instance.outfile_path = prior_outfile_path + self.test_instance.finalize_options() + expected_outfile_path = prior_outfile_path + self.assertEqual(expected_outfile_path, self.test_instance.outfile_path) + + +class has_changelog_TestCase( + testscenarios.WithScenarios, testtools.TestCase): + """ Test cases for ‘has_changelog’ function. """ + + fake_os_path_exists_side_effects = { + 'true': (lambda path: True), + 'false': (lambda path: False), + } + + scenarios = [ + ('no changelog path', { + 'changelog_path': None, + 'expected_result': False, + }), + ('changelog exists', { + 'os_path_exists_scenario': 'true', + 'expected_result': True, + }), + ('changelog not found', { + 'os_path_exists_scenario': 'false', + 'expected_result': False, + }), + ] + + def setUp(self): + """ Set up test fixtures. """ + super(has_changelog_TestCase, self).setUp() + + self.test_distribution = distutils.dist.Distribution() + self.test_command = version.EggInfoCommand( + self.test_distribution) + + patcher_func_get_changelog_path = mock.patch.object( + version, "get_changelog_path") + patcher_func_get_changelog_path.start() + self.addCleanup(patcher_func_get_changelog_path.stop) + + self.fake_changelog_file_path = self.getUniqueString() + if hasattr(self, 'changelog_path'): + self.fake_changelog_file_path = self.changelog_path + version.get_changelog_path.return_value = self.fake_changelog_file_path + self.fake_changelog_file = StringIO() + + def fake_os_path_exists(path): + if path == self.fake_changelog_file_path: + side_effect = self.fake_os_path_exists_side_effects[ + self.os_path_exists_scenario] + if callable(side_effect): + result = side_effect(path) + else: + raise side_effect + else: + result = False + return result + + func_patcher_os_path_exists = mock.patch.object( + os.path, "exists") + func_patcher_os_path_exists.start() + self.addCleanup(func_patcher_os_path_exists.stop) + os.path.exists.side_effect = fake_os_path_exists + + def test_gets_changelog_path_from_distribution(self): + """ Should call ‘get_changelog_path’ with distribution. """ + result = version.has_changelog(self.test_command) + version.get_changelog_path.assert_called_with( + self.test_distribution) + + def test_returns_expected_result(self): + """ Should be a subclass of ‘distutils.cmd.Command’. """ + result = version.has_changelog(self.test_command) + self.assertEqual(self.expected_result, result) + + +@mock.patch.object(version, 'generate_version_info_from_changelog') +@mock.patch.object(version, 'serialise_version_info_from_mapping') +@mock.patch.object(version.EggInfoCommand, "write_file") +class WriteVersionInfoCommand_run_TestCase( + WriteVersionInfoCommand_BaseTestCase): + """ Test cases for ‘WriteVersionInfoCommand.run’ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(WriteVersionInfoCommand_run_TestCase, self).setUp() + + self.test_instance = version.WriteVersionInfoCommand( + self.test_distribution) + + self.fake_changelog_path = self.getUniqueString() + self.test_instance.changelog_path = self.fake_changelog_path + + self.fake_outfile_path = self.getUniqueString() + self.test_instance.outfile_path = self.fake_outfile_path + + def test_returns_none( + self, + mock_func_egg_info_write_file, + mock_func_serialise_version_info, + mock_func_generate_version_info): + """ Should return ``None``. """ + result = self.test_instance.run() + self.assertIs(result, None) + + def test_generates_version_info_from_changelog( + self, + mock_func_egg_info_write_file, + mock_func_serialise_version_info, + mock_func_generate_version_info): + """ Should generate version info from specified changelog. """ + self.test_instance.run() + expected_changelog_path = self.test_instance.changelog_path + mock_func_generate_version_info.assert_called_with( + expected_changelog_path) + + def test_serialises_version_info_from_mapping( + self, + mock_func_egg_info_write_file, + mock_func_serialise_version_info, + mock_func_generate_version_info): + """ Should serialise version info from specified mapping. """ + self.test_instance.run() + expected_version_info = mock_func_generate_version_info.return_value + mock_func_serialise_version_info.assert_called_with( + expected_version_info) + + def test_writes_file_using_command_context( + self, + mock_func_egg_info_write_file, + mock_func_serialise_version_info, + mock_func_generate_version_info): + """ Should write the metadata file using the command context. """ + self.test_instance.run() + expected_content = mock_func_serialise_version_info.return_value + mock_func_egg_info_write_file.assert_called_with( + "version info", self.fake_outfile_path, expected_content) + + +IsSubset = testtools.matchers.MatchesPredicateWithParams( + set.issubset, "{0} should be a subset of {1}") + +class EggInfoCommand_TestCase(testtools.TestCase): + """ Test cases for ‘EggInfoCommand’ class. """ + + def setUp(self): + """ Set up test fixtures. """ + super(EggInfoCommand_TestCase, self).setUp() + + self.test_distribution = distutils.dist.Distribution() + self.test_instance = version.EggInfoCommand(self.test_distribution) + + def test_subclass_of_setuptools_egg_info(self): + """ Should be a subclass of Setuptools ‘egg_info’. """ + self.assertIsInstance( + self.test_instance, setuptools.command.egg_info.egg_info) + + def test_sub_commands_include_base_class_sub_commands(self): + """ Should include base class's sub-commands in this sub_commands. """ + base_command = setuptools.command.egg_info.egg_info + expected_sub_commands = base_command.sub_commands + self.assertThat( + set(expected_sub_commands), + IsSubset(set(self.test_instance.sub_commands))) + + def test_sub_commands_includes_write_version_info_command(self): + """ Should include sub-command named ‘write_version_info’. """ + commands_by_name = dict(self.test_instance.sub_commands) + expected_predicate = version.has_changelog + expected_item = ('write_version_info', expected_predicate) + self.assertIn(expected_item, commands_by_name.items()) + + +@mock.patch.object(setuptools.command.egg_info.egg_info, "run") +class EggInfoCommand_run_TestCase(testtools.TestCase): + """ Test cases for ‘EggInfoCommand.run’ method. """ + + def setUp(self): + """ Set up test fixtures. """ + super(EggInfoCommand_run_TestCase, self).setUp() + + self.test_distribution = distutils.dist.Distribution() + self.test_instance = version.EggInfoCommand(self.test_distribution) + + base_command = setuptools.command.egg_info.egg_info + patcher_func_egg_info_get_sub_commands = mock.patch.object( + base_command, "get_sub_commands") + patcher_func_egg_info_get_sub_commands.start() + self.addCleanup(patcher_func_egg_info_get_sub_commands.stop) + + patcher_func_egg_info_run_command = mock.patch.object( + base_command, "run_command") + patcher_func_egg_info_run_command.start() + self.addCleanup(patcher_func_egg_info_run_command.stop) + + self.fake_sub_commands = ["spam", "eggs", "beans"] + base_command.get_sub_commands.return_value = self.fake_sub_commands + + def test_returns_none(self, mock_func_egg_info_run): + """ Should return ``None``. """ + result = self.test_instance.run() + self.assertIs(result, None) + + def test_runs_each_command_in_sub_commands( + self, mock_func_egg_info_run): + """ Should run each command in ‘self.get_sub_commands()’. """ + base_command = setuptools.command.egg_info.egg_info + self.test_instance.run() + expected_calls = [mock.call(name) for name in self.fake_sub_commands] + base_command.run_command.assert_has_calls(expected_calls) + + def test_calls_base_class_run(self, mock_func_egg_info_run): + """ Should call base class's ‘run’ method. """ + result = self.test_instance.run() + mock_func_egg_info_run.assert_called_with() + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-daemon-2.0.5/version.py Wed Jul 22 13:24:44 2015 -0700 @@ -0,0 +1,547 @@ +# -*- coding: utf-8 -*- + +# version.py +# Part of ‘python-daemon’, an implementation of PEP 3143. +# +# Copyright © 2008–2015 Ben Finney <ben+python@benfinney.id.au> +# +# This is free software: you may copy, modify, and/or distribute this work +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; version 3 of that license or any later version. +# No warranty expressed or implied. See the file ‘LICENSE.GPL-3’ for details. + +""" Version information unified for human- and machine-readable formats. + + The project ‘ChangeLog’ file is a reStructuredText document, with + each section describing a version of the project. The document is + intended to be readable as-is by end users. + + This module handles transformation from the ‘ChangeLog’ to a + mapping of version information, serialised as JSON. It also + provides functionality for Distutils to use this information. + + Requires: + + * Docutils <http://docutils.sourceforge.net/> + * JSON <https://docs.python.org/3/reference/json.html> + + """ + +from __future__ import (absolute_import, unicode_literals) + +import sys +import os +import io +import errno +import json +import datetime +import textwrap +import re +import functools +import collections +import distutils +import distutils.errors +import distutils.cmd +try: + # Python 2 has both ‘str’ (bytes) and ‘unicode’ (text). + basestring = basestring + unicode = unicode +except NameError: + # Python 3 names the Unicode data type ‘str’. + basestring = str + unicode = str + +import setuptools +import setuptools.command.egg_info + + +def ensure_class_bases_begin_with(namespace, class_name, base_class): + """ Ensure the named class's bases start with the base class. + + :param namespace: The namespace containing the class name. + :param class_name: The name of the class to alter. + :param base_class: The type to be the first base class for the + newly created type. + :return: ``None``. + + This function is a hack to circumvent a circular dependency: + using classes from a module which is not installed at the time + this module is imported. + + Call this function after ensuring `base_class` is available, + before using the class named by `class_name`. + + """ + existing_class = namespace[class_name] + assert isinstance(existing_class, type) + + bases = list(existing_class.__bases__) + if base_class is bases[0]: + # Already bound to a type with the right bases. + return + bases.insert(0, base_class) + + new_class_namespace = existing_class.__dict__.copy() + # Type creation will assign the correct ‘__dict__’ attribute. + del new_class_namespace['__dict__'] + + metaclass = existing_class.__metaclass__ + new_class = metaclass(class_name, tuple(bases), new_class_namespace) + + namespace[class_name] = new_class + + +class VersionInfoWriter(object): + """ Docutils writer to produce a version info JSON data stream. """ + + # This class needs its base class to be a class from `docutils`. + # But that would create a circular dependency: Setuptools cannot + # ensure `docutils` is available before importing this module. + # + # Use `ensure_class_bases_begin_with` after importing `docutils`, to + # re-bind the `VersionInfoWriter` name to a new type that inherits + # from `docutils.writers.Writer`. + + __metaclass__ = type + + supported = ['version_info'] + """ Formats this writer supports. """ + + def __init__(self): + super(VersionInfoWriter, self).__init__() + self.translator_class = VersionInfoTranslator + + def translate(self): + visitor = self.translator_class(self.document) + self.document.walkabout(visitor) + self.output = visitor.astext() + + +rfc822_person_regex = re.compile( + "^(?P<name>[^<]+) <(?P<email>[^>]+)>$") + +class ChangeLogEntry: + """ An individual entry from the ‘ChangeLog’ document. """ + + __metaclass__ = type + + field_names = [ + 'release_date', + 'version', + 'maintainer', + 'body', + ] + + date_format = "%Y-%m-%d" + default_version = "UNKNOWN" + default_release_date = "UNKNOWN" + + def __init__( + self, + release_date=default_release_date, version=default_version, + maintainer=None, body=None): + self.validate_release_date(release_date) + self.release_date = release_date + + self.version = version + + self.validate_maintainer(maintainer) + self.maintainer = maintainer + self.body = body + + @classmethod + def validate_release_date(cls, value): + """ Validate the `release_date` value. + + :param value: The prospective `release_date` value. + :return: ``None`` if the value is valid. + :raises ValueError: If the value is invalid. + + """ + if value in ["UNKNOWN", "FUTURE"]: + # A valid non-date value. + return None + + # Raises `ValueError` if parse fails. + datetime.datetime.strptime(value, ChangeLogEntry.date_format) + + @classmethod + def validate_maintainer(cls, value): + """ Validate the `maintainer` value. + + :param value: The prospective `maintainer` value. + :return: ``None`` if the value is valid. + :raises ValueError: If the value is invalid. + + """ + valid = False + + if value is None: + valid = True + elif rfc822_person_regex.search(value): + valid = True + + if not valid: + raise ValueError("Not a valid person specification {value!r}") + else: + return None + + @classmethod + def make_ordered_dict(cls, fields): + """ Make an ordered dict of the fields. """ + result = collections.OrderedDict( + (name, fields[name]) + for name in cls.field_names) + return result + + def as_version_info_entry(self): + """ Format the changelog entry as a version info entry. """ + fields = vars(self) + entry = self.make_ordered_dict(fields) + + return entry + + +class InvalidFormatError(ValueError): + """ Raised when the document is not a valid ‘ChangeLog’ document. """ + + +class VersionInfoTranslator(object): + """ Translator from document nodes to a version info stream. """ + + # This class needs its base class to be a class from `docutils`. + # But that would create a circular dependency: Setuptools cannot + # ensure `docutils` is available before importing this module. + # + # Use `ensure_class_bases_begin_with` after importing `docutils`, + # to re-bind the `VersionInfoTranslator` name to a new type that + # inherits from `docutils.nodes.SparseNodeVisitor`. + + __metaclass__ = type + + wrap_width = 78 + bullet_text = "* " + + attr_convert_funcs_by_attr_name = { + 'released': ('release_date', unicode), + 'version': ('version', unicode), + 'maintainer': ('maintainer', unicode), + } + + def __init__(self, document): + super(VersionInfoTranslator, self).__init__(document) + self.settings = document.settings + self.current_section_level = 0 + self.current_field_name = None + self.content = [] + self.indent_width = 0 + self.initial_indent = "" + self.subsequent_indent = "" + self.current_entry = None + + # Docutils is not available when this class is defined. + # Get the `docutils` module dynamically. + self._docutils = sys.modules['docutils'] + + def astext(self): + """ Return the translated document as text. """ + text = json.dumps(self.content, indent=4) + return text + + def append_to_current_entry(self, text): + if self.current_entry is not None: + if self.current_entry.body is not None: + self.current_entry.body += text + + def visit_Text(self, node): + raw_text = node.astext() + text = textwrap.fill( + raw_text, + width=self.wrap_width, + initial_indent=self.initial_indent, + subsequent_indent=self.subsequent_indent) + self.append_to_current_entry(text) + + def depart_Text(self, node): + pass + + def visit_comment(self, node): + raise self._docutils.nodes.SkipNode + + def visit_field_body(self, node): + field_list_node = node.parent.parent + if not isinstance(field_list_node, self._docutils.nodes.field_list): + raise InvalidFormatError( + "Unexpected field within {node!r}".format( + node=field_list_node)) + (attr_name, convert_func) = self.attr_convert_funcs_by_attr_name[ + self.current_field_name] + attr_value = convert_func(node.astext()) + setattr(self.current_entry, attr_name, attr_value) + + def depart_field_body(self, node): + pass + + def visit_field_list(self, node): + pass + + def depart_field_list(self, node): + self.current_field_name = None + self.current_entry.body = "" + + def visit_field_name(self, node): + field_name = node.astext() + if self.current_section_level == 1: + # At a top-level section. + if field_name.lower() not in ["released", "maintainer"]: + raise InvalidFormatError( + "Unexpected field name {name!r}".format(name=field_name)) + self.current_field_name = field_name.lower() + + def depart_field_name(self, node): + pass + + def visit_bullet_list(self, node): + self.current_context = [] + + def depart_bullet_list(self, node): + self.current_entry.changes = self.current_context + self.current_context = None + + def adjust_indent_width(self, delta): + self.indent_width += delta + self.subsequent_indent = " " * self.indent_width + self.initial_indent = self.subsequent_indent + + def visit_list_item(self, node): + indent_delta = +len(self.bullet_text) + self.adjust_indent_width(indent_delta) + self.initial_indent = self.subsequent_indent[:-indent_delta] + self.append_to_current_entry(self.initial_indent + self.bullet_text) + + def depart_list_item(self, node): + indent_delta = +len(self.bullet_text) + self.adjust_indent_width(-indent_delta) + self.append_to_current_entry("\n") + + def visit_section(self, node): + self.current_section_level += 1 + if self.current_section_level == 1: + # At a top-level section. + self.current_entry = ChangeLogEntry() + else: + raise InvalidFormatError( + "Subsections not implemented for this writer") + + def depart_section(self, node): + self.current_section_level -= 1 + self.content.append( + self.current_entry.as_version_info_entry()) + self.current_entry = None + + _expected_title_word_length = len("Version FOO".split(" ")) + + def depart_title(self, node): + title_text = node.astext() + # At a top-level section. + words = title_text.split(" ") + version = None + if len(words) != self._expected_title_word_length: + raise InvalidFormatError( + "Unexpected title text {text!r}".format(text=title_text)) + if words[0].lower() not in ["version"]: + raise InvalidFormatError( + "Unexpected title text {text!r}".format(text=title_text)) + version = words[-1] + self.current_entry.version = version + + +def changelog_to_version_info_collection(infile): + """ Render the ‘ChangeLog’ document to a version info collection. + + :param infile: A file-like object containing the changelog. + :return: The serialised JSON data of the version info collection. + + """ + + # Docutils is not available when Setuptools needs this module, so + # delay the imports to this function instead. + import docutils.core + import docutils.nodes + import docutils.writers + + ensure_class_bases_begin_with( + globals(), str('VersionInfoWriter'), docutils.writers.Writer) + ensure_class_bases_begin_with( + globals(), str('VersionInfoTranslator'), + docutils.nodes.SparseNodeVisitor) + + writer = VersionInfoWriter() + settings_overrides = { + 'doctitle_xform': False, + } + version_info_json = docutils.core.publish_string( + infile.read(), writer=writer, + settings_overrides=settings_overrides) + + return version_info_json + + +try: + lru_cache = functools.lru_cache +except AttributeError: + # Python < 3.2 does not have the `functools.lru_cache` function. + # Not essential, so replace it with a no-op. + lru_cache = lambda maxsize=None, typed=False: lambda func: func + + +@lru_cache(maxsize=128) +def generate_version_info_from_changelog(infile_path): + """ Get the version info for the latest version in the changelog. + + :param infile_path: Filesystem path to the input changelog file. + :return: The generated version info mapping; or ``None`` if the + file cannot be read. + + The document is explicitly opened as UTF-8 encoded text. + + """ + version_info = collections.OrderedDict() + + versions_all_json = None + try: + with io.open(infile_path, 'rt', encoding="utf-8") as infile: + versions_all_json = changelog_to_version_info_collection(infile) + except EnvironmentError: + # If we can't read the input file, leave the collection empty. + pass + + if versions_all_json is not None: + versions_all = json.loads(versions_all_json.decode('utf-8')) + version_info = get_latest_version(versions_all) + + return version_info + + +def get_latest_version(versions): + """ Get the latest version from a collection of changelog entries. + + :param versions: A collection of mappings for changelog entries. + :return: An ordered mapping of fields for the latest version, + if `versions` is non-empty; otherwise, an empty mapping. + + """ + version_info = collections.OrderedDict() + + versions_by_release_date = { + item['release_date']: item + for item in versions} + if versions_by_release_date: + latest_release_date = max(versions_by_release_date.keys()) + version_info = ChangeLogEntry.make_ordered_dict( + versions_by_release_date[latest_release_date]) + + return version_info + + +def serialise_version_info_from_mapping(version_info): + """ Generate the version info serialised data. + + :param version_info: Mapping of version info items. + :return: The version info serialised to JSON. + + """ + content = json.dumps(version_info, indent=4) + + return content + + +changelog_filename = "ChangeLog" + +def get_changelog_path(distribution, filename=changelog_filename): + """ Get the changelog file path for the distribution. + + :param distribution: The distutils.dist.Distribution instance. + :param filename: The base filename of the changelog document. + :return: Filesystem path of the changelog document, or ``None`` + if not discoverable. + + """ + setup_dirname = os.path.dirname(distribution.script_name) + filepath = os.path.join(setup_dirname, filename) + + return filepath + + +def has_changelog(command): + """ Return ``True`` iff the distribution's changelog file exists. """ + result = False + + changelog_path = get_changelog_path(command.distribution) + if changelog_path is not None: + if os.path.exists(changelog_path): + result = True + + return result + + +class EggInfoCommand(setuptools.command.egg_info.egg_info, object): + """ Custom ‘egg_info’ command for this distribution. """ + + sub_commands = ([ + ('write_version_info', has_changelog), + ] + setuptools.command.egg_info.egg_info.sub_commands) + + def run(self): + """ Execute this command. """ + super(EggInfoCommand, self).run() + + for command_name in self.get_sub_commands(): + self.run_command(command_name) + + +version_info_filename = "version_info.json" + +class WriteVersionInfoCommand(EggInfoCommand, object): + """ Setuptools command to serialise version info metadata. """ + + user_options = ([ + ("changelog-path=", None, + "Filesystem path to the changelog document."), + ("outfile-path=", None, + "Filesystem path to the version info file."), + ] + EggInfoCommand.user_options) + + def initialize_options(self): + """ Initialise command options to defaults. """ + super(WriteVersionInfoCommand, self).initialize_options() + self.changelog_path = None + self.outfile_path = None + + def finalize_options(self): + """ Finalise command options before execution. """ + self.set_undefined_options( + 'build', + ('force', 'force')) + + super(WriteVersionInfoCommand, self).finalize_options() + + if self.changelog_path is None: + self.changelog_path = get_changelog_path(self.distribution) + + if self.outfile_path is None: + egg_dir = self.egg_info + self.outfile_path = os.path.join(egg_dir, version_info_filename) + + def run(self): + """ Execute this command. """ + version_info = generate_version_info_from_changelog(self.changelog_path) + content = serialise_version_info_from_mapping(version_info) + self.write_file("version info", self.outfile_path, content) + + +# Local variables: +# coding: utf-8 +# mode: python +# End: +# vim: fileencoding=utf-8 filetype=python :
--- a/runXena.py Tue Jul 21 23:01:26 2015 -0700 +++ b/runXena.py Wed Jul 22 13:24:44 2015 -0700 @@ -12,6 +12,12 @@ import traceback import xena_utils as xena +dirname = os.path.dirname(os.path.abspath(sys.argv[0])) + +sys.path.insert(0, dirname + "/lockfile-0.10.2/") +sys.path.insert(0, dirname + "/python-daemon-2.0.5/") + + #third party libs from daemon import runner from lockfile import LockTimeout @@ -34,7 +40,7 @@ while True: #Main code goes here ... #Note that logger level needs to be set to logging.DEBUG before this shows up in the logs - xenaCmdline = "java -jar %s -r %s/files -d %s/db -t %s/tmp --logfile %s/xena.log -p %s -H 0.0.0.0" + xenaCmdline = "java -jar %s -r %s/files -d %s/db -t %s/tmp --no-gui --logfile %s/xena.log -p %s -H 0.0.0.0" xenaBaseDir = xena.baseDir() xenaCmd = xenaCmdline % (xena.jarPath(), xenaBaseDir, xenaBaseDir, xenaBaseDir,