annotate mercurial/exchange.py @ 20878:09e7118715eb

pull: prevent duplicated entry in `op.pulledsubset` In the bare pull case we could add the same node multiple time to the `pulloperation.pulledsubset`. Beside being a bit wrong this confused the new revset implementation of `revset._revancestor` into giving bad result. This changeset fix the pull operation part. The fix for the revset itself will come in another changeset.
author Pierre-Yves David <pierre-yves.david@fb.com>
date Wed, 26 Mar 2014 15:55:32 -0700
parents 004a1744088d
children f295b2ac3579
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1 # exchange.py - utily to exchange data between repo.
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from i18n import _
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9 from node import hex, nullid
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10 import errno
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11 import util, scmutil, changegroup, base85
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12 import discovery, phases, obsolete, bookmarks
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13
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14
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15 class pushoperation(object):
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16 """A object that represent a single push operation
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17
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18 It purpose is to carry push related state and very common operation.
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19
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20 A new should be created at the begining of each push and discarded
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21 afterward.
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22 """
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23
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24 def __init__(self, repo, remote, force=False, revs=None, newbranch=False):
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25 # repo we push from
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26 self.repo = repo
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27 self.ui = repo.ui
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28 # repo we push to
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29 self.remote = remote
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30 # force option provided
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31 self.force = force
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32 # revs to be pushed (None is "all")
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33 self.revs = revs
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34 # allow push of new branch
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35 self.newbranch = newbranch
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36 # did a local lock get acquired?
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37 self.locallocked = None
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38 # Integer version of the push result
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39 # - None means nothing to push
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40 # - 0 means HTTP error
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41 # - 1 means we pushed and remote head count is unchanged *or*
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42 # we have outgoing changesets but refused to push
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43 # - other values as described by addchangegroup()
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44 self.ret = None
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45 # discover.outgoing object (contains common and outgoin data)
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46 self.outgoing = None
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47 # all remote heads before the push
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48 self.remoteheads = None
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49 # testable as a boolean indicating if any nodes are missing locally.
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50 self.incoming = None
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51 # set of all heads common after changeset bundle push
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52 self.commonheads = None
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53
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54 def push(repo, remote, force=False, revs=None, newbranch=False):
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55 '''Push outgoing changesets (limited by revs) from a local
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56 repository to remote. Return an integer:
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57 - None means nothing to push
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58 - 0 means HTTP error
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59 - 1 means we pushed and remote head count is unchanged *or*
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60 we have outgoing changesets but refused to push
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61 - other values as described by addchangegroup()
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62 '''
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63 pushop = pushoperation(repo, remote, force, revs, newbranch)
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64 if pushop.remote.local():
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65 missing = (set(pushop.repo.requirements)
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66 - pushop.remote.local().supported)
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67 if missing:
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68 msg = _("required features are not"
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69 " supported in the destination:"
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70 " %s") % (', '.join(sorted(missing)))
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71 raise util.Abort(msg)
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72
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73 # there are two ways to push to remote repo:
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74 #
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75 # addchangegroup assumes local user can lock remote
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76 # repo (local filesystem, old ssh servers).
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77 #
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78 # unbundle assumes local user cannot lock remote repo (new ssh
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79 # servers, http servers).
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80
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81 if not pushop.remote.canpush():
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82 raise util.Abort(_("destination does not support push"))
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83 # get local lock as we might write phase data
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84 locallock = None
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85 try:
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86 locallock = pushop.repo.lock()
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87 pushop.locallocked = True
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88 except IOError, err:
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89 pushop.locallocked = False
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90 if err.errno != errno.EACCES:
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91 raise
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92 # source repo cannot be locked.
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93 # We do not abort the push, but just disable the local phase
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94 # synchronisation.
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95 msg = 'cannot lock source repository: %s\n' % err
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96 pushop.ui.debug(msg)
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97 try:
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98 pushop.repo.checkpush(pushop.force, pushop.revs)
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99 lock = None
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100 unbundle = pushop.remote.capable('unbundle')
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101 if not unbundle:
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102 lock = pushop.remote.lock()
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103 try:
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104 _pushdiscovery(pushop)
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105 if _pushcheckoutgoing(pushop):
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106 _pushchangeset(pushop)
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107 _pushcomputecommonheads(pushop)
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108 _pushsyncphase(pushop)
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109 _pushobsolete(pushop)
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110 finally:
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111 if lock is not None:
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112 lock.release()
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113 finally:
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114 if locallock is not None:
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115 locallock.release()
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116
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117 _pushbookmark(pushop)
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118 return pushop.ret
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119
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120 def _pushdiscovery(pushop):
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121 # discovery
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122 unfi = pushop.repo.unfiltered()
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123 fci = discovery.findcommonincoming
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124 commoninc = fci(unfi, pushop.remote, force=pushop.force)
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125 common, inc, remoteheads = commoninc
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126 fco = discovery.findcommonoutgoing
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127 outgoing = fco(unfi, pushop.remote, onlyheads=pushop.revs,
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128 commoninc=commoninc, force=pushop.force)
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129 pushop.outgoing = outgoing
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130 pushop.remoteheads = remoteheads
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131 pushop.incoming = inc
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132
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133 def _pushcheckoutgoing(pushop):
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134 outgoing = pushop.outgoing
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135 unfi = pushop.repo.unfiltered()
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136 if not outgoing.missing:
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137 # nothing to push
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138 scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
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139 return False
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140 # something to push
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141 if not pushop.force:
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142 # if repo.obsstore == False --> no obsolete
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143 # then, save the iteration
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144 if unfi.obsstore:
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145 # this message are here for 80 char limit reason
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146 mso = _("push includes obsolete changeset: %s!")
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147 mst = "push includes %s changeset: %s!"
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148 # plain versions for i18n tool to detect them
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149 _("push includes unstable changeset: %s!")
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150 _("push includes bumped changeset: %s!")
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151 _("push includes divergent changeset: %s!")
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152 # If we are to push if there is at least one
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153 # obsolete or unstable changeset in missing, at
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154 # least one of the missinghead will be obsolete or
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155 # unstable. So checking heads only is ok
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156 for node in outgoing.missingheads:
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157 ctx = unfi[node]
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158 if ctx.obsolete():
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159 raise util.Abort(mso % ctx)
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160 elif ctx.troubled():
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161 raise util.Abort(_(mst)
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162 % (ctx.troubles()[0],
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163 ctx))
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164 newbm = pushop.ui.configlist('bookmarks', 'pushing')
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165 discovery.checkheads(unfi, pushop.remote, outgoing,
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166 pushop.remoteheads,
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167 pushop.newbranch,
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168 bool(pushop.incoming),
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169 newbm)
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170 return True
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171
20463
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172 def _pushchangeset(pushop):
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173 """Make the actual push of changeset bundle to remote repo"""
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174 outgoing = pushop.outgoing
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175 unbundle = pushop.remote.capable('unbundle')
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176 # TODO: get bundlecaps from remote
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177 bundlecaps = None
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178 # create a changegroup from local
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179 if pushop.revs is None and not (outgoing.excluded
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180 or pushop.repo.changelog.filteredrevs):
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181 # push everything,
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182 # use the fast path, no race possible on push
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183 bundler = changegroup.bundle10(pushop.repo, bundlecaps)
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184 cg = pushop.repo._changegroupsubset(outgoing,
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185 bundler,
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186 'push',
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187 fastpath=True)
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188 else:
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189 cg = pushop.repo.getlocalbundle('push', outgoing, bundlecaps)
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190
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191 # apply changegroup to remote
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192 if unbundle:
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193 # local repo finds heads on server, finds out what
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194 # revs it must push. once revs transferred, if server
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195 # finds it has different heads (someone else won
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196 # commit/push race), server aborts.
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197 if pushop.force:
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198 remoteheads = ['force']
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199 else:
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200 remoteheads = pushop.remoteheads
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201 # ssh: return remote's addchangegroup()
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202 # http: return remote's addchangegroup() or 0 for error
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203 pushop.ret = pushop.remote.unbundle(cg, remoteheads,
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204 'push')
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205 else:
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206 # we return an integer indicating remote head count
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207 # change
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208 pushop.ret = pushop.remote.addchangegroup(cg, 'push',
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209 pushop.repo.url())
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210
20468
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211 def _pushcomputecommonheads(pushop):
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212 unfi = pushop.repo.unfiltered()
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213 if pushop.ret:
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214 # push succeed, synchronize target of the push
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215 cheads = pushop.outgoing.missingheads
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216 elif pushop.revs is None:
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217 # All out push fails. synchronize all common
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218 cheads = pushop.outgoing.commonheads
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219 else:
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220 # I want cheads = heads(::missingheads and ::commonheads)
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221 # (missingheads is revs with secret changeset filtered out)
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222 #
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223 # This can be expressed as:
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224 # cheads = ( (missingheads and ::commonheads)
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225 # + (commonheads and ::missingheads))"
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226 # )
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227 #
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228 # while trying to push we already computed the following:
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229 # common = (::commonheads)
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230 # missing = ((commonheads::missingheads) - commonheads)
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231 #
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232 # We can pick:
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233 # * missingheads part of common (::commonheads)
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234 common = set(pushop.outgoing.common)
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235 nm = pushop.repo.changelog.nodemap
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236 cheads = [node for node in pushop.revs if nm[node] in common]
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237 # and
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238 # * commonheads parents on missing
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239 revset = unfi.set('%ln and parents(roots(%ln))',
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240 pushop.outgoing.commonheads,
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241 pushop.outgoing.missing)
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242 cheads.extend(c.node() for c in revset)
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243 pushop.commonheads = cheads
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244
20441
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245 def _pushsyncphase(pushop):
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246 """synchronise phase information locally and remotly"""
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247 unfi = pushop.repo.unfiltered()
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248 cheads = pushop.commonheads
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249 if pushop.ret:
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250 # push succeed, synchronize target of the push
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251 cheads = pushop.outgoing.missingheads
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252 elif pushop.revs is None:
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253 # All out push fails. synchronize all common
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254 cheads = pushop.outgoing.commonheads
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255 else:
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256 # I want cheads = heads(::missingheads and ::commonheads)
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257 # (missingheads is revs with secret changeset filtered out)
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258 #
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259 # This can be expressed as:
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260 # cheads = ( (missingheads and ::commonheads)
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261 # + (commonheads and ::missingheads))"
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262 # )
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263 #
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264 # while trying to push we already computed the following:
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265 # common = (::commonheads)
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266 # missing = ((commonheads::missingheads) - commonheads)
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267 #
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268 # We can pick:
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269 # * missingheads part of common (::commonheads)
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270 common = set(pushop.outgoing.common)
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271 nm = pushop.repo.changelog.nodemap
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272 cheads = [node for node in pushop.revs if nm[node] in common]
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273 # and
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274 # * commonheads parents on missing
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275 revset = unfi.set('%ln and parents(roots(%ln))',
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276 pushop.outgoing.commonheads,
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277 pushop.outgoing.missing)
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278 cheads.extend(c.node() for c in revset)
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279 pushop.commonheads = cheads
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280 # even when we don't push, exchanging phase data is useful
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281 remotephases = pushop.remote.listkeys('phases')
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282 if (pushop.ui.configbool('ui', '_usedassubrepo', False)
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283 and remotephases # server supports phases
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284 and pushop.ret is None # nothing was pushed
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285 and remotephases.get('publishing', False)):
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286 # When:
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287 # - this is a subrepo push
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288 # - and remote support phase
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289 # - and no changeset was pushed
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290 # - and remote is publishing
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291 # We may be in issue 3871 case!
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292 # We drop the possible phase synchronisation done by
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293 # courtesy to publish changesets possibly locally draft
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294 # on the remote.
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295 remotephases = {'publishing': 'True'}
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296 if not remotephases: # old server or public only rer
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297 _localphasemove(pushop, cheads)
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298 # don't push any phase data as there is nothing to push
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299 else:
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300 ana = phases.analyzeremotephases(pushop.repo, cheads,
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301 remotephases)
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302 pheads, droots = ana
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303 ### Apply remote phase on local
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304 if remotephases.get('publishing', False):
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305 _localphasemove(pushop, cheads)
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306 else: # publish = False
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307 _localphasemove(pushop, pheads)
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308 _localphasemove(pushop, cheads, phases.draft)
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309 ### Apply local phase on remote
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310
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311 # Get the list of all revs draft on remote by public here.
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312 # XXX Beware that revset break if droots is not strictly
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313 # XXX root we may want to ensure it is but it is costly
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314 outdated = unfi.set('heads((%ln::%ln) and public())',
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315 droots, cheads)
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316 for newremotehead in outdated:
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317 r = pushop.remote.pushkey('phases',
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318 newremotehead.hex(),
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319 str(phases.draft),
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320 str(phases.public))
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321 if not r:
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322 pushop.ui.warn(_('updating %s to public failed!\n')
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323 % newremotehead)
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324
20438
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325 def _localphasemove(pushop, nodes, phase=phases.public):
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326 """move <nodes> to <phase> in the local source repo"""
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327 if pushop.locallocked:
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328 phases.advanceboundary(pushop.repo, phase, nodes)
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329 else:
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330 # repo is not locked, do not change any phases!
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331 # Informs the user that phases should have been moved when
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332 # applicable.
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333 actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
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334 phasestr = phases.phasenames[phase]
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335 if actualmoves:
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336 pushop.ui.status(_('cannot lock source repo, skipping '
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337 'local %s phase update\n') % phasestr)
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338
20433
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339 def _pushobsolete(pushop):
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340 """utility function to push obsolete markers to a remote"""
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341 pushop.ui.debug('try to push obsolete markers to remote\n')
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342 repo = pushop.repo
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343 remote = pushop.remote
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diff changeset
344 if (obsolete._enabled and repo.obsstore and
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diff changeset
345 'obsolete' in remote.listkeys('namespaces')):
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346 rslts = []
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347 remotedata = repo.listkeys('obsolete')
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348 for key in sorted(remotedata, reverse=True):
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diff changeset
349 # reverse sort to ensure we end with dump0
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350 data = remotedata[key]
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351 rslts.append(remote.pushkey('obsolete', key, '', data))
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352 if [r for r in rslts if not r]:
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353 msg = _('failed to push some obsolete markers!\n')
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354 repo.ui.warn(msg)
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355
20431
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diff changeset
356 def _pushbookmark(pushop):
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diff changeset
357 """Update bookmark position on remote"""
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358 ui = pushop.ui
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diff changeset
359 repo = pushop.repo.unfiltered()
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360 remote = pushop.remote
20352
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diff changeset
361 ui.debug("checking for updated bookmarks\n")
20431
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diff changeset
362 revnums = map(repo.changelog.rev, pushop.revs or [])
20352
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diff changeset
363 ancestors = [a for a in repo.changelog.ancestors(revnums, inclusive=True)]
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diff changeset
364 (addsrc, adddst, advsrc, advdst, diverge, differ, invalid
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diff changeset
365 ) = bookmarks.compare(repo, repo._bookmarks, remote.listkeys('bookmarks'),
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366 srchex=hex)
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367
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368 for b, scid, dcid in advsrc:
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369 if ancestors and repo[scid].rev() not in ancestors:
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370 continue
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371 if remote.pushkey('bookmarks', b, dcid, scid):
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372 ui.status(_("updating bookmark %s\n") % b)
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373 else:
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374 ui.warn(_('updating bookmark %s failed!\n') % b)
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375
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376 class pulloperation(object):
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377 """A object that represent a single pull operation
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378
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379 It purpose is to carry push related state and very common operation.
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380
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381 A new should be created at the begining of each pull and discarded
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382 afterward.
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383 """
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384
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385 def __init__(self, repo, remote, heads=None, force=False):
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386 # repo we pull into
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387 self.repo = repo
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388 # repo we pull from
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389 self.remote = remote
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390 # revision we try to pull (None is "all")
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391 self.heads = heads
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392 # do we force pull?
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393 self.force = force
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394 # the name the pull transaction
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395 self._trname = 'pull\n' + util.hidepassword(remote.url())
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396 # hold the transaction once created
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397 self._tr = None
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398 # set of common changeset between local and remote before pull
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399 self.common = None
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400 # set of pulled head
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401 self.rheads = None
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402 # list of missing changeset to fetch remotly
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403 self.fetch = None
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404
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diff changeset
405 @util.propertycache
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406 def pulledsubset(self):
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407 """heads of the set of changeset target by the pull"""
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408 # compute target subset
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409 if self.heads is None:
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410 # We pulled every thing possible
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411 # sync on everything common
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diff changeset
412 c = set(self.common)
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413 ret = list(self.common)
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diff changeset
414 for n in self.rheads:
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diff changeset
415 if n not in c:
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diff changeset
416 ret.append(n)
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417 return ret
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418 else:
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419 # We pulled a specific subset
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420 # sync on this subset
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421 return self.heads
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422
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423 def gettransaction(self):
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424 """get appropriate pull transaction, creating it if needed"""
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425 if self._tr is None:
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426 self._tr = self.repo.transaction(self._trname)
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diff changeset
427 return self._tr
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diff changeset
428
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diff changeset
429 def closetransaction(self):
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430 """close transaction if created"""
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431 if self._tr is not None:
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432 self._tr.close()
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433
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434 def releasetransaction(self):
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435 """release transaction if created"""
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436 if self._tr is not None:
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437 self._tr.release()
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diff changeset
438
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439 def pull(repo, remote, heads=None, force=False):
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440 pullop = pulloperation(repo, remote, heads, force)
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441 if pullop.remote.local():
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diff changeset
442 missing = set(pullop.remote.requirements) - pullop.repo.supported
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443 if missing:
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444 msg = _("required features are not"
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445 " supported in the destination:"
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446 " %s") % (', '.join(sorted(missing)))
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diff changeset
447 raise util.Abort(msg)
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diff changeset
448
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449 lock = pullop.repo.lock()
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diff changeset
450 try:
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451 tmp = discovery.findcommonincoming(pullop.repo.unfiltered(),
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diff changeset
452 pullop.remote,
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diff changeset
453 heads=pullop.heads,
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diff changeset
454 force=force)
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diff changeset
455 pullop.common, pullop.fetch, pullop.rheads = tmp
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diff changeset
456 if not pullop.fetch:
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diff changeset
457 pullop.repo.ui.status(_("no changes found\n"))
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diff changeset
458 result = 0
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diff changeset
459 else:
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diff changeset
460 result = _pullchangeset(pullop)
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diff changeset
461
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diff changeset
462 _pullphase(pullop)
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diff changeset
463 _pullobsolete(pullop)
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diff changeset
464 pullop.closetransaction()
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diff changeset
465 finally:
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diff changeset
466 pullop.releasetransaction()
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diff changeset
467 lock.release()
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diff changeset
468
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diff changeset
469 return result
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diff changeset
470
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diff changeset
471 def _pullchangeset(pullop):
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diff changeset
472 """pull changeset from unbundle into the local repo"""
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diff changeset
473 # We delay the open of the transaction as late as possible so we
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diff changeset
474 # don't open transaction for nothing or you break future useful
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diff changeset
475 # rollback call
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diff changeset
476 pullop.gettransaction()
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diff changeset
477 if pullop.heads is None and list(pullop.common) == [nullid]:
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diff changeset
478 pullop.repo.ui.status(_("requesting all changes\n"))
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diff changeset
479 elif pullop.heads is None and pullop.remote.capable('changegroupsubset'):
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diff changeset
480 # issue1320, avoid a race if remote changed after discovery
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diff changeset
481 pullop.heads = pullop.rheads
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diff changeset
482
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diff changeset
483 if pullop.remote.capable('getbundle'):
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diff changeset
484 # TODO: get bundlecaps from remote
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diff changeset
485 cg = pullop.remote.getbundle('pull', common=pullop.common,
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diff changeset
486 heads=pullop.heads or pullop.rheads)
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diff changeset
487 elif pullop.heads is None:
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diff changeset
488 cg = pullop.remote.changegroup(pullop.fetch, 'pull')
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489 elif not pullop.remote.capable('changegroupsubset'):
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490 raise util.Abort(_("partial pull cannot be done because "
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491 "other repository doesn't support "
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492 "changegroupsubset."))
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493 else:
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494 cg = pullop.remote.changegroupsubset(pullop.fetch, pullop.heads, 'pull')
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495 return pullop.repo.addchangegroup(cg, 'pull', pullop.remote.url())
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496
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497 def _pullphase(pullop):
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498 # Get remote phases data from remote
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499 remotephases = pullop.remote.listkeys('phases')
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500 publishing = bool(remotephases.get('publishing', False))
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501 if remotephases and not publishing:
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502 # remote is new and unpublishing
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503 pheads, _dr = phases.analyzeremotephases(pullop.repo,
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504 pullop.pulledsubset,
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505 remotephases)
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506 phases.advanceboundary(pullop.repo, phases.public, pheads)
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507 phases.advanceboundary(pullop.repo, phases.draft,
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508 pullop.pulledsubset)
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509 else:
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510 # Remote is old or publishing all common changesets
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511 # should be seen as public
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512 phases.advanceboundary(pullop.repo, phases.public,
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513 pullop.pulledsubset)
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514
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515 def _pullobsolete(pullop):
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516 """utility function to pull obsolete markers from a remote
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517
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518 The `gettransaction` is function that return the pull transaction, creating
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519 one if necessary. We return the transaction to inform the calling code that
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520 a new transaction have been created (when applicable).
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521
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522 Exists mostly to allow overriding for experimentation purpose"""
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523 tr = None
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524 if obsolete._enabled:
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525 pullop.repo.ui.debug('fetching remote obsolete markers\n')
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526 remoteobs = pullop.remote.listkeys('obsolete')
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527 if 'dump0' in remoteobs:
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528 tr = pullop.gettransaction()
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529 for key in sorted(remoteobs, reverse=True):
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530 if key.startswith('dump'):
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531 data = base85.b85decode(remoteobs[key])
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532 pullop.repo.obsstore.mergemarkers(tr, data)
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533 pullop.repo.invalidatevolatilesets()
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534 return tr
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535