Mercurial > hg > silvermirror

annotate silvermirror/unify.py @ 13:584a847d2491

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note on FF sync
author Jeff Hammel <jhammel@mozilla.com>
date Sat, 09 Apr 2011 12:10:19 -0700
parents 9b139702a8f9
children 743c920bc041
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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abb358e2434c initial commit of silvermirror, from http://my-svn.assembla.com/svn/arbez/silvermirror
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1 #!/usr/bin/env python
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3 import getpass
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4 import os
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5 import pexpect
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6 import socket
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7 import subprocess
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8 import sys
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10 from martini.config import ConfigMunger
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11 from optparse import OptionParser
1
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12 from pkg_resources import iter_entry_points
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13 from pprint import pprint
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14 from utils import home
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15 from utils import ip_addresses
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17 def make_config(filename):
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18 # XXX needed?
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19 raise NotImplementedError('Need to specify a config file, like\n~/silvermirror/silvermirror.ini')
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21 def read_config(filename):
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22 config = ConfigMunger(filename).dict()
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24 ### main configuration
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25 main = config.pop('::SilverMirror::', {})
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26 if not main.get('basedir'):
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27 main['basedir'] = home()
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28 main['ignore'] = main.get('ignore', '').split() # patterns to ignore - not used
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29 main['hosts'] = main.get('hosts', '').split()
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30 main['password'] = main.get('password', 'true') # XXX not used
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31 main['timeout'] = float(main.get('timeout', '10.'))
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32
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33 ### resources
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34 for resource in config:
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35
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36 # directory of resource
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37 directory = config[resource].get('directory', resource)
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38 if not os.path.isabs(directory):
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39 # XXX note: absolute directories will not work for now
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40 # XXX so....don't do this!
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41 directory = os.path.join(main['basedir'], directory)
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42 config[resource]['directory'] = directory.rstrip(os.path.sep)
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43
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44 # per-resource files to ignore
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45 # XXX regexps for now (see `man unison`)
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46 # - this is bad as whitespace patterns cannot be ignored
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47 ignore = main['ignore'][:]
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48 if config[resource].has_key('ignore'):
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49 ignore += config[resource]['ignore'].split()
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50 config[resource]['ignore'] = ignore
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51
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52 ###
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53 config = { 'main': main, 'resources': config }
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54 return config
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55
1
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56 def unify(conf, _resources, test=False):
0
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57
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58 # passwords
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59 pw = {}
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60
1
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61 # XXX needed for now
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62 assert conf['main']['basedir'] == home()
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63
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64 ### determine hosts to sync with
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65 hosts = conf['hosts']
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66 addresses = ip_addresses().values()
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67 hosts = hosts.difference(addresses) # don't sync with self
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68 _hosts = []
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69 for host in hosts:
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70 s = socket.socket()
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71 s.settimeout(conf['main']['timeout'])
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72 if test:
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73 print 'Resolving %s' % host
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74 try:
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75 s.connect((host, 22))
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76 s.close()
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77 except (socket.gaierror, socket.timeout, socket.error):
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78 continue
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79 _hosts.append(host)
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80 hosts = _hosts
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81 if test:
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82 print 'Hosts:'
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83 for host in hosts:
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84 print host
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85 assert hosts
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86
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87 if conf['main']['password']:
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88 for host in hosts:
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89 pw[host] = getpass.getpass('Enter password for %s: ' % host)
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90 # TODO: ensure that the hosts are resolvable
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91 # XXX: hosts should actually be manageable on a per-resource basis
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92
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93 ### determine resources to sync
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94 cwd = os.path.realpath(os.getcwd())
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95 resources = conf['resources']
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96 if 'all' not in _resources:
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97 if _resources:
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98 resources = dict([(key, value) for key, value in resources.items()
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99 if key in _resources])
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100 else:
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101 for key, value in resources.items():
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102 directory = os.path.realpath(value['directory']) + os.sep
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103 if (cwd + os.sep).startswith(directory):
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104 resources = { key: value }
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105 break
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106 if test:
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107 print 'Resources:'
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108 pprint(resources)
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109
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110 ### choose reflector backend
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111 reflectors = dict([(i.name, i.load()) for i in iter_entry_points('silvermirror.reflectors')])
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112 reflector = reflectors['unison']() # only one right now
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113
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114 ### sync with hosts
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115 os.chdir(conf['main']['basedir'])
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116 for resource in resources:
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117 for host in hosts:
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118 reflector.sync(host, resource, resources[resource]['ignore'], pw, test)
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119 os.chdir(cwd)
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120
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121 def main(args=sys.argv[1:]):
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122
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123 ### command line options
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124 parser = OptionParser()
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125 parser.add_option('-c', '--config')
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126 parser.add_option('-H', '--host', dest='hosts',
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127 action='append', default=None)
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128 parser.add_option('--no-password', dest='password',
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129 action='store_false', default=True)
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130 parser.add_option('--test', dest='test',
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131 action='store_true', default=False)
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132 (options, args) = parser.parse_args()
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133
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134
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135 ### configuration
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136 user_conf = os.path.join(home(), '.silvermirror')
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137 if options.config:
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138 assert os.path.exists(options.config)
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139 conf = read_config(options.config)
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140 else:
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141 for i in user_conf, '/etc/silvermirror':
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142 if os.path.exists(i):
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143 conf = read_config(i)
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144 break
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145 else:
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146 conf = make_config(user_conf)
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147
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148 # XXX needed for now
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149 assert conf['main']['basedir'] == home()
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150
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151 # fix up configuration from command line options
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152 conf['hosts'] = set(options.hosts or conf['main']['hosts'])
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153 conf['main']['password'] = options.password and conf['main']['password']
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154
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155 unify(conf, args, options.test)
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156
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157 if __name__ == '__main__':
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158 unify()