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annotate mercurial/exchange.py @ 20464:d032417db243

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push: move `incoming` into the push object The fact that there is some unknown changes on remote one of the result of discovery. It is then used by some push validation logic. We move it in the object to be able to extract the said logic.
author Pierre-Yves David <pierre-yves.david@logilab.fr>
date Thu, 30 Jan 2014 21:01:13 -0800
parents f1b532a310e4
children 170f71061069
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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
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10 import errno
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11 import util, scmutil, changegroup
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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
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52 def push(repo, remote, force=False, revs=None, newbranch=False):
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53 '''Push outgoing changesets (limited by revs) from a local
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54 repository to remote. Return an integer:
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55 - None means nothing to push
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56 - 0 means HTTP error
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57 - 1 means we pushed and remote head count is unchanged *or*
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58 we have outgoing changesets but refused to push
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59 - other values as described by addchangegroup()
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60 '''
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61 pushop = pushoperation(repo, remote, force, revs, newbranch)
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62 if pushop.remote.local():
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63 missing = (set(pushop.repo.requirements)
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64 - pushop.remote.local().supported)
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65 if missing:
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66 msg = _("required features are not"
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67 " supported in the destination:"
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68 " %s") % (', '.join(sorted(missing)))
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69 raise util.Abort(msg)
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70
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71 # there are two ways to push to remote repo:
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72 #
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73 # addchangegroup assumes local user can lock remote
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74 # repo (local filesystem, old ssh servers).
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75 #
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76 # unbundle assumes local user cannot lock remote repo (new ssh
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77 # servers, http servers).
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78
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79 if not pushop.remote.canpush():
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80 raise util.Abort(_("destination does not support push"))
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81 unfi = pushop.repo.unfiltered()
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82 # get local lock as we might write phase data
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83 locallock = None
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84 try:
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85 locallock = pushop.repo.lock()
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86 pushop.locallocked = True
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87 except IOError, err:
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88 pushop.locallocked = False
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89 if err.errno != errno.EACCES:
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90 raise
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91 # source repo cannot be locked.
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92 # We do not abort the push, but just disable the local phase
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93 # synchronisation.
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94 msg = 'cannot lock source repository: %s\n' % err
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95 pushop.ui.debug(msg)
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96 try:
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97 pushop.repo.checkpush(pushop.force, pushop.revs)
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98 lock = None
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99 unbundle = pushop.remote.capable('unbundle')
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100 if not unbundle:
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101 lock = pushop.remote.lock()
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102 try:
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103 # discovery
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104 fci = discovery.findcommonincoming
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105 commoninc = fci(unfi, pushop.remote, force=pushop.force)
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106 common, inc, remoteheads = commoninc
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107 fco = discovery.findcommonoutgoing
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108 outgoing = fco(unfi, pushop.remote, onlyheads=pushop.revs,
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109 commoninc=commoninc, force=pushop.force)
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110 pushop.outgoing = outgoing
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111 pushop.remoteheads = remoteheads
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112 pushop.incoming = inc
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113
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114
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115 if not outgoing.missing:
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116 # nothing to push
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117 scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
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118 else:
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119 # something to push
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120 if not pushop.force:
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121 # if repo.obsstore == False --> no obsolete
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122 # then, save the iteration
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123 if unfi.obsstore:
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124 # this message are here for 80 char limit reason
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125 mso = _("push includes obsolete changeset: %s!")
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126 mst = "push includes %s changeset: %s!"
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127 # plain versions for i18n tool to detect them
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128 _("push includes unstable changeset: %s!")
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129 _("push includes bumped changeset: %s!")
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130 _("push includes divergent changeset: %s!")
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131 # If we are to push if there is at least one
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132 # obsolete or unstable changeset in missing, at
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133 # least one of the missinghead will be obsolete or
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134 # unstable. So checking heads only is ok
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135 for node in outgoing.missingheads:
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136 ctx = unfi[node]
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137 if ctx.obsolete():
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138 raise util.Abort(mso % ctx)
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139 elif ctx.troubled():
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140 raise util.Abort(_(mst)
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141 % (ctx.troubles()[0],
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142 ctx))
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143 newbm = pushop.ui.configlist('bookmarks', 'pushing')
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144 discovery.checkheads(unfi, pushop.remote, outgoing,
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145 remoteheads, pushop.newbranch,
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146 bool(pushop.incoming), newbm)
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147 _pushchangeset(pushop)
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148 _pushsyncphase(pushop)
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149 _pushobsolete(pushop)
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150 finally:
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151 if lock is not None:
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152 lock.release()
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153 finally:
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154 if locallock is not None:
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155 locallock.release()
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156
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157 _pushbookmark(pushop)
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158 return pushop.ret
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159
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160 def _pushchangeset(pushop):
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161 """Make the actual push of changeset bundle to remote repo"""
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162 outgoing = pushop.outgoing
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163 unbundle = pushop.remote.capable('unbundle')
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164 # TODO: get bundlecaps from remote
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165 bundlecaps = None
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166 # create a changegroup from local
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167 if pushop.revs is None and not (outgoing.excluded
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168 or pushop.repo.changelog.filteredrevs):
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169 # push everything,
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170 # use the fast path, no race possible on push
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171 bundler = changegroup.bundle10(pushop.repo, bundlecaps)
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172 cg = pushop.repo._changegroupsubset(outgoing,
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173 bundler,
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174 'push',
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175 fastpath=True)
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176 else:
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177 cg = pushop.repo.getlocalbundle('push', outgoing, bundlecaps)
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178
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179 # apply changegroup to remote
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180 if unbundle:
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181 # local repo finds heads on server, finds out what
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182 # revs it must push. once revs transferred, if server
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183 # finds it has different heads (someone else won
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184 # commit/push race), server aborts.
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185 if pushop.force:
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186 remoteheads = ['force']
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187 else:
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188 remoteheads = pushop.remoteheads
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189 # ssh: return remote's addchangegroup()
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190 # http: return remote's addchangegroup() or 0 for error
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191 pushop.ret = pushop.remote.unbundle(cg, remoteheads,
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192 'push')
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193 else:
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194 # we return an integer indicating remote head count
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195 # change
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196 pushop.ret = pushop.remote.addchangegroup(cg, 'push',
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197 pushop.repo.url())
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198
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199 def _pushsyncphase(pushop):
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200 """synchronise phase information locally and remotly"""
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201 unfi = pushop.repo.unfiltered()
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202 if pushop.ret:
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203 # push succeed, synchronize target of the push
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204 cheads = pushop.outgoing.missingheads
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205 elif pushop.revs is None:
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206 # All out push fails. synchronize all common
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207 cheads = pushop.outgoing.commonheads
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208 else:
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209 # I want cheads = heads(::missingheads and ::commonheads)
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210 # (missingheads is revs with secret changeset filtered out)
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211 #
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212 # This can be expressed as:
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213 # cheads = ( (missingheads and ::commonheads)
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214 # + (commonheads and ::missingheads))"
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215 # )
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216 #
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217 # while trying to push we already computed the following:
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218 # common = (::commonheads)
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219 # missing = ((commonheads::missingheads) - commonheads)
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220 #
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221 # We can pick:
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222 # * missingheads part of common (::commonheads)
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223 common = set(pushop.outgoing.common)
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224 nm = pushop.repo.changelog.nodemap
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225 cheads = [node for node in pushop.revs if nm[node] in common]
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226 # and
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227 # * commonheads parents on missing
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228 revset = unfi.set('%ln and parents(roots(%ln))',
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229 pushop.outgoing.commonheads,
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230 pushop.outgoing.missing)
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231 cheads.extend(c.node() for c in revset)
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232 # even when we don't push, exchanging phase data is useful
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233 remotephases = pushop.remote.listkeys('phases')
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234 if (pushop.ui.configbool('ui', '_usedassubrepo', False)
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235 and remotephases # server supports phases
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236 and pushop.ret is None # nothing was pushed
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237 and remotephases.get('publishing', False)):
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238 # When:
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239 # - this is a subrepo push
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240 # - and remote support phase
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241 # - and no changeset was pushed
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242 # - and remote is publishing
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243 # We may be in issue 3871 case!
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244 # We drop the possible phase synchronisation done by
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245 # courtesy to publish changesets possibly locally draft
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246 # on the remote.
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247 remotephases = {'publishing': 'True'}
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248 if not remotephases: # old server or public only rer
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249 _localphasemove(pushop, cheads)
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250 # don't push any phase data as there is nothing to push
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251 else:
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252 ana = phases.analyzeremotephases(pushop.repo, cheads,
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253 remotephases)
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254 pheads, droots = ana
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255 ### Apply remote phase on local
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256 if remotephases.get('publishing', False):
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257 _localphasemove(pushop, cheads)
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258 else: # publish = False
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259 _localphasemove(pushop, pheads)
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260 _localphasemove(pushop, cheads, phases.draft)
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261 ### Apply local phase on remote
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262
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263 # Get the list of all revs draft on remote by public here.
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264 # XXX Beware that revset break if droots is not strictly
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265 # XXX root we may want to ensure it is but it is costly
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266 outdated = unfi.set('heads((%ln::%ln) and public())',
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267 droots, cheads)
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268 for newremotehead in outdated:
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269 r = pushop.remote.pushkey('phases',
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270 newremotehead.hex(),
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271 str(phases.draft),
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272 str(phases.public))
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273 if not r:
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274 pushop.ui.warn(_('updating %s to public failed!\n')
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275 % newremotehead)
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276
20438
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277 def _localphasemove(pushop, nodes, phase=phases.public):
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278 """move <nodes> to <phase> in the local source repo"""
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279 if pushop.locallocked:
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280 phases.advanceboundary(pushop.repo, phase, nodes)
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281 else:
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282 # repo is not locked, do not change any phases!
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283 # Informs the user that phases should have been moved when
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284 # applicable.
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285 actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
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286 phasestr = phases.phasenames[phase]
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287 if actualmoves:
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288 pushop.ui.status(_('cannot lock source repo, skipping '
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289 'local %s phase update\n') % phasestr)
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290
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291 def _pushobsolete(pushop):
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292 """utility function to push obsolete markers to a remote"""
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293 pushop.ui.debug('try to push obsolete markers to remote\n')
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294 repo = pushop.repo
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295 remote = pushop.remote
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296 if (obsolete._enabled and repo.obsstore and
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297 'obsolete' in remote.listkeys('namespaces')):
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298 rslts = []
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299 remotedata = repo.listkeys('obsolete')
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300 for key in sorted(remotedata, reverse=True):
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301 # reverse sort to ensure we end with dump0
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302 data = remotedata[key]
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303 rslts.append(remote.pushkey('obsolete', key, '', data))
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304 if [r for r in rslts if not r]:
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305 msg = _('failed to push some obsolete markers!\n')
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306 repo.ui.warn(msg)
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307
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308 def _pushbookmark(pushop):
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309 """Update bookmark position on remote"""
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310 ui = pushop.ui
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311 repo = pushop.repo.unfiltered()
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312 remote = pushop.remote
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313 ui.debug("checking for updated bookmarks\n")
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314 revnums = map(repo.changelog.rev, pushop.revs or [])
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315 ancestors = [a for a in repo.changelog.ancestors(revnums, inclusive=True)]
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316 (addsrc, adddst, advsrc, advdst, diverge, differ, invalid
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317 ) = bookmarks.compare(repo, repo._bookmarks, remote.listkeys('bookmarks'),
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318 srchex=hex)
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319
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320 for b, scid, dcid in advsrc:
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321 if ancestors and repo[scid].rev() not in ancestors:
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322 continue
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323 if remote.pushkey('bookmarks', b, dcid, scid):
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324 ui.status(_("updating bookmark %s\n") % b)
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325 else:
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326 ui.warn(_('updating bookmark %s failed!\n') % b)