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annotate profilemanager/manager.py @ 70:6e282cacd5f0

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author Jeff Hammel <jhammel@mozilla.com>
date Fri, 07 May 2010 16:06:05 -0700
parents 86b137d49467
children 494ea3c2f578
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1 """
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2 manage Mozilla/Firefox profiles
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3 """
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4
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5 import os
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6 import shutil
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7 import string
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8 import tempfile
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9 import time
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10 import ConfigParser
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11 from datetime import datetime
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12 from dateutil.parser import parse
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13 from random import Random
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14 from utils import format_tabular
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15 from ConfigParser import SafeConfigParser as ConfigParser
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16
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17 # Changes to profiles.ini:
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18 # - add a ``backups`` field for each profile:
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19 # Backups = /path/to/backup:1273104310 /path/to/other/backup:1273104355
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20
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21 class ProfileNotFound(Exception):
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22 """
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23 exception when a profile is specified but is not present in a given
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24 .ini file
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25 """
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26 def __init__(self, profile, config):
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27 self.profile = profile
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28 self.config = config
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29 Exception.__init__(self,
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30 'Profile %s not found in %s' % (profile, config))
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31
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32 class NoBackupError(Exception):
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33 """
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34 exception when a sought backup is not found
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35 """
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36
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37 class ProfileManager(object):
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38
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39 backups_dir = 'backups' # directory for backups relative to profile_dir
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40
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41 def __init__(self, profiles):
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42 """
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43 - profiles: filesystem path to profiles.ini file
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44 """
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45 self.profiles = profiles
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46 self.profile_dir = os.path.abspath(os.path.dirname(profiles))
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47
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48 ### (public) API
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49
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50 def new(self, name, directory=None, hash=True):
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51 """
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52 generate a new clean profile
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53 - name: name of the profile to generate
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54 - directory: where to create the profile [DEFAULT: relative to profiles.ini]
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55 - hash: whether to generate a a random hash tag
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56 """
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57
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58 # path to the profile directory
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59 dirname = name
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60 relative = False
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61 if hash:
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62 dirname = '%s.%s' % (self.hash(), dirname)
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63 if not directory:
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64 directory = self.profile_dir
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65 relative = True
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66 path = os.path.join(directory, dirname)
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67
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68 # create directory
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69 # TODO: (optionally) pre-populate the directory a la Firefox
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70 os.mkdir(path)
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71
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72 # update profiles.ini
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73 self.add(name, relative and dirname or path, relative)
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74
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75 # return the directory name
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76 return path
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77
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78 def remove(self, name, delete=True):
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79 """
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80 remove a profile from profiles.ini
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81 - delete: delete the profile directory as well
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82 """
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83 parser = self.parser()
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84 section = self.section(name, parser)
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85 if section is None:
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86 raise ProfileNotFound(profile, self.profiles)
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87 if delete: # remove the profile from disk
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88 shutil.rmtree(self.path(name))
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89 parser.remove_section(section)
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90 self.write(parser)
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91
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92 def list(self, directories=False):
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93 """
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94 lists the profiles available in the config file
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95 - directories : display the directories
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96 """
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97 profiles = self.profiles_dict()
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98 if not directories:
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99 return sorted(profiles.keys())
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100 return dict([(name, self.path(name)) for name in profiles.keys()])
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101
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102 def clone(self, source, dest, add=True):
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103 """
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104 clones the profile `source` and output to `dest`
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105 - add: add the profile to the profiles.ini file
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106 """
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107
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108 # filesystem path of the `from` profile
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109 source_path = self.path(source)
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110
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111 # dest: fs path to back up to
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112 relative = False
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113 if os.path.sep in dest:
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114 if not os.path.isabs(dest):
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115 dest = os.path.abspath(dest)
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116 dirname = dest
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117 name = os.path.basename(dest)
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118 else:
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119 name = dest
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120 relative = True
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121 if add:
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122 dirname = '%s.%s' % (self.hash(), name)
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123 dest = os.path.join(self.profile_dir, dirname)
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124
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125 # update profiles.ini
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126 if add:
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127 self.add(name, dirname, relative)
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128
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129 # copy the files
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130 shutil.copytree(source_path, dest, symlinks=False)
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131
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132 return dest
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133
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134 def backup(self, profile, dest=None):
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135 """
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136 backup a profile
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137 - profile: name of the profile to be backed up
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138 - dest: name of the destination; if not given, a default is used
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139 """
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140
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141 # get the profile section
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142 parser = self.parser()
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143 section = self.section(profile)
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144 if section is None:
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145 raise ProfileNotFound(profile, self.profiles)
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146
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147 # determine destination directory
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148 if dest is None:
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149 dest = '%s.%d.bak' % (profile, int(time.time()))
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150 name = dest
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151 backups_dir = os.path.join(self.profile_dir, self.backups_dir)
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152 if not os.path.exists(backups_dir):
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153 os.mkdir(backups_dir)
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154 dest = os.path.join(backups_dir, dest)
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155 else:
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156 if not os.path.isabs(dest):
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157 dest = os.path.abspath(dest)
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158 name = dest
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159
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160 # copy the files
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161 self.clone(profile, dest, add=False)
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162
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163 # add backup entry to profiles.ini (colon separated):
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164 # `Backup=$(profile)s.$(datestamp)s.bak`
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165 if parser.has_option(section, 'Backups'):
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166 backups = '%s:%s' % (parser.get(section, 'Backups'), name)
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167 else:
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168 backups = name
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169 parser.set(section, 'Backups', backups)
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170 self.write(parser)
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171
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172 def backups(self, profile=None, datestamp=None):
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173 """
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174 list backups for a given profile, or all profiles if the
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175 profile is not given; returns a list of backups if
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176 profile is given or a dictionary of lists otherwise
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177 - datestamp: format of date; otherwise, seconds since epoch
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178 """
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179 if profile is None: # all profiles
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180 retval = {}
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181 profiles_dict = self.profiles_dict()
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182 for profile in profiles_dict:
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183 if 'Backups' in profiles_dict[profile]:
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184 retval[profile] = self.backups(profile, datestamp)
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185 return retval
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186
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187 # single profile
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188 profile_dict = self.profile_dict(profile)
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189 if 'Backups' not in profile_dict:
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190 return []
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191 backups = profile_dict['Backups'].split(':')
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192 backups_dirs = []
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193 for backup in backups:
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194 if os.path.isabs(backup):
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195 backup_dir = backup
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196 else:
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197 backup_dir = os.path.join(self.profile_dir, self.backups_dir, backup)
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198 backups_dirs.append((backup, int(os.path.getmtime(backup_dir))))
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199 # TODO: check if the getmtime == the datestamp for relative backups
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200
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201 # sort by reverse datestamp
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202 backups_dirs.sort(key=lambda x: x[1], reverse=True)
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203
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204 # format to datestamps, if applicable
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205 if datestamp:
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206 backups_dirs = [ (i[0], time.strftime(datestamp,
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207 time.localtime(int(i[1]))))
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208 for i in backups_dirs ]
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209
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210 return backups_dirs
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211
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212 def restore(self, profile, date=None, delete=False):
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213 """
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214 restore the profile from a backup
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215 the most recent backup is used unless `date` is given
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216 - date : date to restore from (will not delete)
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217 - delete : delete the backup after restoration
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218 """
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219
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220 assert not (date and delete), 'date and delete cannot be used in conjunction'
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221
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222 # get the path to the profile
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223 path = self.path(profile)
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224
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225 # get the possible backups
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226 backups = self.backups(profile)
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227 # TODO: check to see if these all exist (print warnings if not)
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228
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229 # determine the backup to use
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230 if date:
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231
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232 if isinstance(date, basestring):
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233
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234 # test for s since epoch
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235 seconds_snice_epoch = None
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236 try:
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237 seconds_since_epoch = int(date)
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238
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239 except ValueError:
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240 pass
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241 if seconds_since_epoch and seconds_since_epoch > time.localtime().tm_year:
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242 date = seconds_since_epoch
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243 else:
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244 date = parse(date) # parse date from string
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245
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246 if isinstance(date, datetime):
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247 # convert to s since epoch
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248 date = time.mktime(date.timetuple())
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249
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250 for backup in backups:
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251 raise NotImplementedError
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252 else:
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253 if not backups:
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254 raise NoBackupError("No backups for profile %s in %s" % (profile, self.profiles))
66
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255 backup = backups[0]
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256
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257 # determine path of the backup
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258 if os.path.isabs(backup[0]):
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259 backup_path = backup
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260 else:
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261 backup_path = os.path.join(self.profile_dir, self.backups_dir, backup[0])
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262
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263 # restore the backup over ``profile``
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264 # make a backup copy first to avoid data loss
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265 tempdir = tempfile.mktemp()
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266 shutil.move(path, tempdir)
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267 try:
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268 shutil.copytree(backup_path, path)
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269 except Exception, e:
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270 shutil.rmtree(path)
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271 shutil.move(tempdir, path)
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272 raise IOError("Couldn't restore backup: %s" % str(e))
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273 shutil.rmtree(tempdir)
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274 # TODO: (optionally) make a backup of the current profile before restore
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275
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276 if delete: # delete the backup
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277
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278 # delete the directory
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279 shutil.rmtree(backup_path)
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280
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281 # delete the entry from ``profiles.ini``
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282 parser = self.parser()
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283 section = self.section(profile)
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284 backups = parser.get(section, 'Backups').split(':')
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285 backups = [ i for i in backups if i != backup[0] ]
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286 parser.set(section, 'Backups', ':'.join(backups))
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287
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288 # if there are no backups, delete the ``backups`` line
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289 # and the backups directory
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290 import pdb; pdb.set_trace()
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291 if not backups:
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292 parser.remove(section, 'Backups')
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293 backups_dir = os.path.join(self.profile_dir, self.backups_dir)
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294 if not os.listdir(backups_dir):
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295 shutil.rmtree(backups_dir)
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296
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297 def temporary(self):
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298 """make a temporary profile"""
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299 raise NotImplementedError
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300
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301 def merge(self, output, *profiles):
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302 """merge a set of profiles (not trivial!)"""
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303 raise NotImplementedError
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304
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305 ### internal functions
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306
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307 def add(self, profile, path, relative=True):
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308 """
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309 add a profile entry to profiles.ini
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310 """
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311
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312 # ensure name is not already present
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313 assert profile not in self.profiles_dict(), 'Profile "%s" already in %s' % (name, self.profiles)
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314 parser = self.parser()
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315
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316 # find and add the section
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317 ctr = 0
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318 section = 'Profile%d' % ctr # unsure of this naming convention
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319 while section in parser.sections():
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320 ctr += 1
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321 section = 'Profile%d' % ctr
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322 parser.add_section(section)
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323
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324 # add metadata
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325 parser.set(section, 'Name', profile)
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326 parser.set(section, 'IsRelative', '%d' % int(relative))
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327 parser.set(section, 'Path', path)
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328 if not ctr:
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329 parser.set(section, 'Default', '1')
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330
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331 # write the file
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332 self.write(parser)
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333
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334 def path(self, profile):
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335 """returns the path to the profile"""
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336 profile = self.profile_dict(profile)
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337 if profile.get('IsRelative', None) == '1':
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338 return os.path.join(self.profile_dir, profile['Path'])
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339 return profile['Path']
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340
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341 def parser(self):
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342 """
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343 return a ConfigParser instance appropriate to profiles.ini
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344 """
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345 parser = ConfigParser()
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346 parser.optionxform = str
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347 parser.read(self.profiles)
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348 return parser
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349
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350 def write(self, parser):
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351 f = file(self.profiles, 'w')
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352 parser.write(f)
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353 f.close()
0
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354
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355 def section(self, profile, parser=None):
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356 """
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357 returns the name of the section that a profile is in or None
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358 if not found
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359 """
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360 if parser is None:
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361 parser = self.parser()
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362 for section in parser.sections():
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363 if not parser.has_option(section, 'Name'):
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364 continue # not a profile
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365 if parser.get(section, 'Name') == profile:
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366 return section
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367
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368 def profile_dict(self, profile):
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369 """
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370 return option dictionary for a single profile
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371 """
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372 parser = self.parser()
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373 section = self.section(profile, parser)
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374 if section is None:
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375 raise ProfileNotFound(profile, self.profiles)
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376 return dict(parser.items(section))
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377
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378 def profiles_dict(self):
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379 """
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380 return nested dict of all profiles
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381 """
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382 # assumes profiles have unique names
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383 parser = self.parser()
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384 retval = {}
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385 for section in parser.sections():
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386 if section == 'General':
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387 continue
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388 if not parser.has_option(section, 'Name'):
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389 continue
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390 name = parser.get(section, 'Name')
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391 retval[name] = self.profile_dict(name)
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392 return retval
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393
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394 def hash(self):
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395 """
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396 generate a random hash for a new profile
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397 """
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398 population = string.lowercase + string.digits
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399 return ''.join(Random().sample(population, 8))
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400
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401