Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/boto/gs/lifecycle.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # Copyright 2013 Google Inc.
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a
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4 # copy of this software and associated documentation files (the
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5 # "Software"), to deal in the Software without restriction, including
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6 # without limitation the rights to use, copy, modify, merge, publish, dis-
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7 # tribute, sublicense, and/or sell copies of the Software, and to permit
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8 # persons to whom the Software is furnished to do so, subject to the fol-
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9 # lowing conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included
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12 # in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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16 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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17 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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18 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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20 # IN THE SOFTWARE.
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21
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22 from boto.exception import InvalidLifecycleConfigError
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23
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24 # Relevant tags for the lifecycle configuration XML document.
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25 LIFECYCLE_CONFIG = 'LifecycleConfiguration'
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26 RULE = 'Rule'
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27 ACTION = 'Action'
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28 DELETE = 'Delete'
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29 CONDITION = 'Condition'
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30 AGE = 'Age'
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31 CREATED_BEFORE = 'CreatedBefore'
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32 NUM_NEWER_VERSIONS = 'NumberOfNewerVersions'
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33 IS_LIVE = 'IsLive'
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34
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35 # List of all action elements.
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36 LEGAL_ACTIONS = [DELETE]
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37 # List of all action parameter elements.
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38 LEGAL_ACTION_PARAMS = []
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39 # List of all condition elements.
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40 LEGAL_CONDITIONS = [AGE, CREATED_BEFORE, NUM_NEWER_VERSIONS, IS_LIVE]
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41 # Dictionary mapping actions to supported action parameters for each action.
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42 LEGAL_ACTION_ACTION_PARAMS = {
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43 DELETE: [],
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44 }
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45
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46 class Rule(object):
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47 """
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48 A lifecycle rule for a bucket.
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49
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50 :ivar action: Action to be taken.
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51
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52 :ivar action_params: A dictionary of action specific parameters. Each item
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53 in the dictionary represents the name and value of an action parameter.
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54
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55 :ivar conditions: A dictionary of conditions that specify when the action
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56 should be taken. Each item in the dictionary represents the name and value
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57 of a condition.
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58 """
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59
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60 def __init__(self, action=None, action_params=None, conditions=None):
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61 self.action = action
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62 self.action_params = action_params or {}
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63 self.conditions = conditions or {}
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64
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65 # Name of the current enclosing tag (used to validate the schema).
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66 self.current_tag = RULE
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67
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68 def validateStartTag(self, tag, parent):
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69 """Verify parent of the start tag."""
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70 if self.current_tag != parent:
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71 raise InvalidLifecycleConfigError(
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72 'Invalid tag %s found inside %s tag' % (tag, self.current_tag))
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73
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74 def validateEndTag(self, tag):
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75 """Verify end tag against the start tag."""
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76 if tag != self.current_tag:
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77 raise InvalidLifecycleConfigError(
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78 'Mismatched start and end tags (%s/%s)' %
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79 (self.current_tag, tag))
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80
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81 def startElement(self, name, attrs, connection):
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82 if name == ACTION:
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83 self.validateStartTag(name, RULE)
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84 elif name in LEGAL_ACTIONS:
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85 self.validateStartTag(name, ACTION)
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86 # Verify there is only one action tag in the rule.
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87 if self.action is not None:
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88 raise InvalidLifecycleConfigError(
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89 'Only one action tag is allowed in each rule')
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90 self.action = name
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91 elif name in LEGAL_ACTION_PARAMS:
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92 # Make sure this tag is found in an action tag.
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93 if self.current_tag not in LEGAL_ACTIONS:
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94 raise InvalidLifecycleConfigError(
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95 'Tag %s found outside of action' % name)
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96 # Make sure this tag is allowed for the current action tag.
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97 if name not in LEGAL_ACTION_ACTION_PARAMS[self.action]:
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98 raise InvalidLifecycleConfigError(
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99 'Tag %s not allowed in action %s' % (name, self.action))
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100 elif name == CONDITION:
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101 self.validateStartTag(name, RULE)
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102 elif name in LEGAL_CONDITIONS:
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103 self.validateStartTag(name, CONDITION)
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104 # Verify there is no duplicate conditions.
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105 if name in self.conditions:
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106 raise InvalidLifecycleConfigError(
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107 'Found duplicate conditions %s' % name)
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108 else:
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109 raise InvalidLifecycleConfigError('Unsupported tag ' + name)
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110 self.current_tag = name
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111
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112 def endElement(self, name, value, connection):
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113 self.validateEndTag(name)
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114 if name == RULE:
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115 # We have to validate the rule after it is fully populated because
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116 # the action and condition elements could be in any order.
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117 self.validate()
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118 elif name == ACTION:
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119 self.current_tag = RULE
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120 elif name in LEGAL_ACTIONS:
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121 self.current_tag = ACTION
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122 elif name in LEGAL_ACTION_PARAMS:
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123 self.current_tag = self.action
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124 # Add the action parameter name and value to the dictionary.
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125 self.action_params[name] = value.strip()
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126 elif name == CONDITION:
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127 self.current_tag = RULE
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128 elif name in LEGAL_CONDITIONS:
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129 self.current_tag = CONDITION
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130 # Add the condition name and value to the dictionary.
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131 self.conditions[name] = value.strip()
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132 else:
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133 raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
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134
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135 def validate(self):
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136 """Validate the rule."""
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137 if not self.action:
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138 raise InvalidLifecycleConfigError(
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139 'No action was specified in the rule')
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140 if not self.conditions:
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141 raise InvalidLifecycleConfigError(
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142 'No condition was specified for action %s' % self.action)
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143
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144 def to_xml(self):
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145 """Convert the rule into XML string representation."""
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146 s = '<' + RULE + '>'
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147 s += '<' + ACTION + '>'
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148 if self.action_params:
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149 s += '<' + self.action + '>'
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150 for param in LEGAL_ACTION_PARAMS:
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151 if param in self.action_params:
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152 s += ('<' + param + '>' + self.action_params[param] + '</'
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153 + param + '>')
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154 s += '</' + self.action + '>'
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155 else:
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156 s += '<' + self.action + '/>'
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157 s += '</' + ACTION + '>'
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158 s += '<' + CONDITION + '>'
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159 for condition in LEGAL_CONDITIONS:
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160 if condition in self.conditions:
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161 s += ('<' + condition + '>' + self.conditions[condition] + '</'
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162 + condition + '>')
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163 s += '</' + CONDITION + '>'
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164 s += '</' + RULE + '>'
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165 return s
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166
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167 class LifecycleConfig(list):
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168 """
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169 A container of rules associated with a lifecycle configuration.
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170 """
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171
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172 def __init__(self):
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173 # Track if root tag has been seen.
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174 self.has_root_tag = False
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175
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176 def startElement(self, name, attrs, connection):
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177 if name == LIFECYCLE_CONFIG:
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178 if self.has_root_tag:
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179 raise InvalidLifecycleConfigError(
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180 'Only one root tag is allowed in the XML')
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181 self.has_root_tag = True
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182 elif name == RULE:
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183 if not self.has_root_tag:
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184 raise InvalidLifecycleConfigError('Invalid root tag ' + name)
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185 rule = Rule()
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186 self.append(rule)
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187 return rule
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188 else:
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189 raise InvalidLifecycleConfigError('Unsupported tag ' + name)
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190
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191 def endElement(self, name, value, connection):
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192 if name == LIFECYCLE_CONFIG:
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193 pass
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194 else:
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195 raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
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196
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197 def to_xml(self):
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198 """Convert LifecycleConfig object into XML string representation."""
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199 s = '<?xml version="1.0" encoding="UTF-8"?>'
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200 s += '<' + LIFECYCLE_CONFIG + '>'
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201 for rule in self:
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202 s += rule.to_xml()
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203 s += '</' + LIFECYCLE_CONFIG + '>'
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204 return s
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205
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206 def add_rule(self, action, action_params, conditions):
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207 """
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208 Add a rule to this Lifecycle configuration. This only adds the rule to
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209 the local copy. To install the new rule(s) on the bucket, you need to
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210 pass this Lifecycle config object to the configure_lifecycle method of
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211 the Bucket object.
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212
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213 :type action: str
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214 :param action: Action to be taken.
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215
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216 :type action_params: dict
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217 :param action_params: A dictionary of action specific parameters. Each
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218 item in the dictionary represents the name and value of an action
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219 parameter.
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220
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221 :type conditions: dict
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222 :param conditions: A dictionary of conditions that specify when the
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223 action should be taken. Each item in the dictionary represents the name
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224 and value of a condition.
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225 """
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226 rule = Rule(action, action_params, conditions)
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227 self.append(rule)