Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/boto/gs/lifecycle.py @ 4:79f47841a781 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
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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 SET_STORAGE_CLASS = 'SetStorageClass'
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30 CONDITION = 'Condition'
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31 AGE = 'Age'
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32 CREATED_BEFORE = 'CreatedBefore'
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33 NUM_NEWER_VERSIONS = 'NumberOfNewerVersions'
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34 IS_LIVE = 'IsLive'
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35 MATCHES_STORAGE_CLASS = 'MatchesStorageClass'
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36
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37 # List of all action elements.
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38 LEGAL_ACTIONS = [DELETE, SET_STORAGE_CLASS]
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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 MATCHES_STORAGE_CLASS]
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42 # List of conditions elements that may be repeated.
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43 LEGAL_REPEATABLE_CONDITIONS = [MATCHES_STORAGE_CLASS]
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44
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45 class Rule(object):
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46 """
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47 A lifecycle rule for a bucket.
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48
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49 :ivar action: Action to be taken.
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50
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51 :ivar action_text: The text value for the specified action, if any.
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52
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53 :ivar conditions: A dictionary of conditions that specify when the action
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54 should be taken. Each item in the dictionary represents the name and
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55 value (or a list of multiple values, if applicable) of a condition.
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56 """
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57
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58 def __init__(self, action=None, action_text=None, conditions=None):
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59 self.action = action
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60 self.action_text = action_text
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61 self.conditions = conditions or {}
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62
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63 # Name of the current enclosing tag (used to validate the schema).
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64 self.current_tag = RULE
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65
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66 def validateStartTag(self, tag, parent):
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67 """Verify parent of the start tag."""
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68 if self.current_tag != parent:
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69 raise InvalidLifecycleConfigError(
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70 'Invalid tag %s found inside %s tag' % (tag, self.current_tag))
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71
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72 def validateEndTag(self, tag):
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73 """Verify end tag against the start tag."""
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74 if tag != self.current_tag:
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75 raise InvalidLifecycleConfigError(
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76 'Mismatched start and end tags (%s/%s)' %
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77 (self.current_tag, tag))
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78
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79 def startElement(self, name, attrs, connection):
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80 if name == ACTION:
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81 self.validateStartTag(name, RULE)
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82 elif name in LEGAL_ACTIONS:
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83 self.validateStartTag(name, ACTION)
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84 # Verify there is only one action tag in the rule.
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85 if self.action is not None:
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86 raise InvalidLifecycleConfigError(
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87 'Only one action tag is allowed in each rule')
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88 self.action = name
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89 elif name == CONDITION:
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90 self.validateStartTag(name, RULE)
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91 elif name in LEGAL_CONDITIONS:
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92 self.validateStartTag(name, CONDITION)
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93 # Verify there is no duplicate conditions.
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94 if (name in self.conditions and
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95 name not in LEGAL_REPEATABLE_CONDITIONS):
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96 raise InvalidLifecycleConfigError(
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97 'Found duplicate non-repeatable conditions %s' % name)
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98 else:
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99 raise InvalidLifecycleConfigError('Unsupported tag ' + name)
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100 self.current_tag = name
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101
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102 def endElement(self, name, value, connection):
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103 self.validateEndTag(name)
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104 if name == RULE:
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105 # We have to validate the rule after it is fully populated because
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106 # the action and condition elements could be in any order.
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107 self.validate()
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108 elif name == ACTION:
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109 self.current_tag = RULE
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110 elif name in LEGAL_ACTIONS:
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111 if name == SET_STORAGE_CLASS and value is not None:
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112 self.action_text = value.strip()
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113 self.current_tag = ACTION
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114 elif name == CONDITION:
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115 self.current_tag = RULE
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116 elif name in LEGAL_CONDITIONS:
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117 self.current_tag = CONDITION
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118 # Some conditions specify a list of values.
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119 if name in LEGAL_REPEATABLE_CONDITIONS:
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120 if name not in self.conditions:
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121 self.conditions[name] = []
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122 self.conditions[name].append(value.strip())
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123 else:
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124 self.conditions[name] = value.strip()
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125 else:
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126 raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
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127
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128 def validate(self):
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129 """Validate the rule."""
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130 if not self.action:
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131 raise InvalidLifecycleConfigError(
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132 'No action was specified in the rule')
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133 if not self.conditions:
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134 raise InvalidLifecycleConfigError(
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135 'No condition was specified for action %s' % self.action)
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136
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137 def to_xml(self):
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138 """Convert the rule into XML string representation."""
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139 s = ['<' + RULE + '>']
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140 s.append('<' + ACTION + '>')
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141 if self.action_text:
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142 s.extend(['<' + self.action + '>',
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143 self.action_text,
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144 '</' + self.action + '>'])
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145 else:
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146 s.append('<' + self.action + '/>')
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147 s.append('</' + ACTION + '>')
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148 s.append('<' + CONDITION + '>')
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149 for condition_name in self.conditions:
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150 if condition_name not in LEGAL_CONDITIONS:
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151 continue
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152 if condition_name in LEGAL_REPEATABLE_CONDITIONS:
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153 condition_values = self.conditions[condition_name]
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154 else:
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155 # Wrap condition value in a list, allowing us to iterate over
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156 # all condition values using the same logic.
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157 condition_values = [self.conditions[condition_name]]
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158 for condition_value in condition_values:
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159 s.extend(['<' + condition_name + '>',
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160 condition_value,
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161 '</' + condition_name + '>'])
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162 s.append('</' + CONDITION + '>')
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163 s.append('</' + RULE + '>')
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164 return ''.join(s)
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165
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166 class LifecycleConfig(list):
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167 """
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168 A container of rules associated with a lifecycle configuration.
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169 """
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170
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171 def __init__(self):
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172 # Track if root tag has been seen.
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173 self.has_root_tag = False
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174
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175 def startElement(self, name, attrs, connection):
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176 if name == LIFECYCLE_CONFIG:
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177 if self.has_root_tag:
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178 raise InvalidLifecycleConfigError(
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179 'Only one root tag is allowed in the XML')
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180 self.has_root_tag = True
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181 elif name == RULE:
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182 if not self.has_root_tag:
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183 raise InvalidLifecycleConfigError('Invalid root tag ' + name)
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184 rule = Rule()
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185 self.append(rule)
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186 return rule
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187 else:
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188 raise InvalidLifecycleConfigError('Unsupported tag ' + name)
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189
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190 def endElement(self, name, value, connection):
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191 if name == LIFECYCLE_CONFIG:
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192 pass
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193 else:
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194 raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
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195
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196 def to_xml(self):
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197 """Convert LifecycleConfig object into XML string representation."""
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198 s = ['<?xml version="1.0" encoding="UTF-8"?>']
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199 s.append('<' + LIFECYCLE_CONFIG + '>')
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200 for rule in self:
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201 s.append(rule.to_xml())
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202 s.append('</' + LIFECYCLE_CONFIG + '>')
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203 return ''.join(s)
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204
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205 def add_rule(self, action, action_text, conditions):
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206 """
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207 Add a rule to this Lifecycle configuration. This only adds the rule to
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208 the local copy. To install the new rule(s) on the bucket, you need to
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209 pass this Lifecycle config object to the configure_lifecycle method of
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210 the Bucket object.
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211
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212 :type action: str
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213 :param action: Action to be taken.
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214
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215 :type action_text: str
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216 :param action_text: Value for the specified action.
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217
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218 :type conditions: dict
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219 :param conditions: A dictionary of conditions that specify when the
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220 action should be taken. Each item in the dictionary represents the name
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221 and value of a condition.
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222 """
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223 rule = Rule(action, action_text, conditions)
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224 self.append(rule)