Mercurial > hg
annotate mercurial/exchange.py @ 21019:3dc09f831a2e
bundle2: lazy unbundle of part payload
The `unbundle` part gains a `read` method to retrieve payload content.
This method behaves as a python file-like read method.
The bundle-processing code is updated to make sure a part is fully consumed before
another one is extracted.
Test output changes because the debug output is even more interleaved now.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Fri, 11 Apr 2014 16:05:22 -0400 |
parents | c827a0028e6f |
children | 7731a2281cf0 |
rev | line source |
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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, bundle2 |
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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) |
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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 |
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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 = changegroup.getsubset(pushop.repo, |
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185 outgoing, |
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186 bundler, |
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187 'push', |
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188 fastpath=True) |
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189 else: |
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190 cg = changegroup.getlocalbundle(pushop.repo, 'push', outgoing, |
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191 bundlecaps) |
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192 |
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193 # apply changegroup to remote |
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194 if unbundle: |
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195 # local repo finds heads on server, finds out what |
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196 # revs it must push. once revs transferred, if server |
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197 # finds it has different heads (someone else won |
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198 # commit/push race), server aborts. |
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199 if pushop.force: |
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200 remoteheads = ['force'] |
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201 else: |
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202 remoteheads = pushop.remoteheads |
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203 # ssh: return remote's addchangegroup() |
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204 # http: return remote's addchangegroup() or 0 for error |
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205 pushop.ret = pushop.remote.unbundle(cg, remoteheads, |
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206 'push') |
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207 else: |
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208 # we return an integer indicating remote head count |
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209 # change |
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210 pushop.ret = pushop.remote.addchangegroup(cg, 'push', pushop.repo.url()) |
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211 |
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212 def _pushcomputecommonheads(pushop): |
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213 unfi = pushop.repo.unfiltered() |
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214 if pushop.ret: |
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215 # push succeed, synchronize target of the push |
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216 cheads = pushop.outgoing.missingheads |
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217 elif pushop.revs is None: |
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218 # All out push fails. synchronize all common |
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219 cheads = pushop.outgoing.commonheads |
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220 else: |
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221 # I want cheads = heads(::missingheads and ::commonheads) |
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222 # (missingheads is revs with secret changeset filtered out) |
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223 # |
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224 # This can be expressed as: |
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225 # cheads = ( (missingheads and ::commonheads) |
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226 # + (commonheads and ::missingheads))" |
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227 # ) |
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228 # |
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229 # while trying to push we already computed the following: |
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230 # common = (::commonheads) |
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231 # missing = ((commonheads::missingheads) - commonheads) |
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232 # |
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233 # We can pick: |
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234 # * missingheads part of common (::commonheads) |
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235 common = set(pushop.outgoing.common) |
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236 nm = pushop.repo.changelog.nodemap |
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237 cheads = [node for node in pushop.revs if nm[node] in common] |
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238 # and |
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239 # * commonheads parents on missing |
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240 revset = unfi.set('%ln and parents(roots(%ln))', |
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241 pushop.outgoing.commonheads, |
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242 pushop.outgoing.missing) |
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243 cheads.extend(c.node() for c in revset) |
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244 pushop.commonheads = cheads |
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245 |
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246 def _pushsyncphase(pushop): |
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247 """synchronise phase information locally and remotly""" |
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248 unfi = pushop.repo.unfiltered() |
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249 cheads = pushop.commonheads |
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250 if pushop.ret: |
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251 # push succeed, synchronize target of the push |
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252 cheads = pushop.outgoing.missingheads |
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253 elif pushop.revs is None: |
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254 # All out push fails. synchronize all common |
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255 cheads = pushop.outgoing.commonheads |
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256 else: |
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257 # I want cheads = heads(::missingheads and ::commonheads) |
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258 # (missingheads is revs with secret changeset filtered out) |
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259 # |
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260 # This can be expressed as: |
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261 # cheads = ( (missingheads and ::commonheads) |
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262 # + (commonheads and ::missingheads))" |
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263 # ) |
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264 # |
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265 # while trying to push we already computed the following: |
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266 # common = (::commonheads) |
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267 # missing = ((commonheads::missingheads) - commonheads) |
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268 # |
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269 # We can pick: |
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270 # * missingheads part of common (::commonheads) |
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271 common = set(pushop.outgoing.common) |
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272 nm = pushop.repo.changelog.nodemap |
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273 cheads = [node for node in pushop.revs if nm[node] in common] |
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274 # and |
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275 # * commonheads parents on missing |
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276 revset = unfi.set('%ln and parents(roots(%ln))', |
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277 pushop.outgoing.commonheads, |
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278 pushop.outgoing.missing) |
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279 cheads.extend(c.node() for c in revset) |
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280 pushop.commonheads = cheads |
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281 # even when we don't push, exchanging phase data is useful |
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282 remotephases = pushop.remote.listkeys('phases') |
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283 if (pushop.ui.configbool('ui', '_usedassubrepo', False) |
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284 and remotephases # server supports phases |
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285 and pushop.ret is None # nothing was pushed |
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286 and remotephases.get('publishing', False)): |
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287 # When: |
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288 # - this is a subrepo push |
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289 # - and remote support phase |
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290 # - and no changeset was pushed |
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291 # - and remote is publishing |
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292 # We may be in issue 3871 case! |
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293 # We drop the possible phase synchronisation done by |
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294 # courtesy to publish changesets possibly locally draft |
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295 # on the remote. |
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296 remotephases = {'publishing': 'True'} |
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297 if not remotephases: # old server or public only reply from non-publishing |
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298 _localphasemove(pushop, cheads) |
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299 # don't push any phase data as there is nothing to push |
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300 else: |
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301 ana = phases.analyzeremotephases(pushop.repo, cheads, |
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302 remotephases) |
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303 pheads, droots = ana |
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304 ### Apply remote phase on local |
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305 if remotephases.get('publishing', False): |
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306 _localphasemove(pushop, cheads) |
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307 else: # publish = False |
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308 _localphasemove(pushop, pheads) |
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309 _localphasemove(pushop, cheads, phases.draft) |
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310 ### Apply local phase on remote |
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311 |
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312 # Get the list of all revs draft on remote by public here. |
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313 # XXX Beware that revset break if droots is not strictly |
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314 # XXX root we may want to ensure it is but it is costly |
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315 outdated = unfi.set('heads((%ln::%ln) and public())', |
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316 droots, cheads) |
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317 for newremotehead in outdated: |
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318 r = pushop.remote.pushkey('phases', |
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319 newremotehead.hex(), |
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320 str(phases.draft), |
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321 str(phases.public)) |
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322 if not r: |
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323 pushop.ui.warn(_('updating %s to public failed!\n') |
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324 % newremotehead) |
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325 |
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326 def _localphasemove(pushop, nodes, phase=phases.public): |
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327 """move <nodes> to <phase> in the local source repo""" |
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328 if pushop.locallocked: |
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329 phases.advanceboundary(pushop.repo, phase, nodes) |
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330 else: |
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331 # repo is not locked, do not change any phases! |
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332 # Informs the user that phases should have been moved when |
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333 # applicable. |
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334 actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()] |
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335 phasestr = phases.phasenames[phase] |
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336 if actualmoves: |
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337 pushop.ui.status(_('cannot lock source repo, skipping ' |
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338 'local %s phase update\n') % phasestr) |
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339 |
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340 def _pushobsolete(pushop): |
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341 """utility function to push obsolete markers to a remote""" |
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342 pushop.ui.debug('try to push obsolete markers to remote\n') |
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343 repo = pushop.repo |
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344 remote = pushop.remote |
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345 if (obsolete._enabled and repo.obsstore and |
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346 'obsolete' in remote.listkeys('namespaces')): |
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347 rslts = [] |
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348 remotedata = repo.listkeys('obsolete') |
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349 for key in sorted(remotedata, reverse=True): |
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350 # reverse sort to ensure we end with dump0 |
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351 data = remotedata[key] |
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352 rslts.append(remote.pushkey('obsolete', key, '', data)) |
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353 if [r for r in rslts if not r]: |
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354 msg = _('failed to push some obsolete markers!\n') |
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355 repo.ui.warn(msg) |
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356 |
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357 def _pushbookmark(pushop): |
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358 """Update bookmark position on remote""" |
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359 ui = pushop.ui |
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360 repo = pushop.repo.unfiltered() |
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361 remote = pushop.remote |
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362 ui.debug("checking for updated bookmarks\n") |
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363 revnums = map(repo.changelog.rev, pushop.revs or []) |
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364 ancestors = [a for a in repo.changelog.ancestors(revnums, inclusive=True)] |
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365 (addsrc, adddst, advsrc, advdst, diverge, differ, invalid |
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366 ) = bookmarks.compare(repo, repo._bookmarks, remote.listkeys('bookmarks'), |
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367 srchex=hex) |
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368 |
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369 for b, scid, dcid in advsrc: |
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370 if ancestors and repo[scid].rev() not in ancestors: |
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371 continue |
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372 if remote.pushkey('bookmarks', b, dcid, scid): |
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373 ui.status(_("updating bookmark %s\n") % b) |
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374 else: |
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375 ui.warn(_('updating bookmark %s failed!\n') % b) |
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376 |
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377 class pulloperation(object): |
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378 """A object that represent a single pull operation |
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379 |
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380 It purpose is to carry push related state and very common operation. |
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381 |
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382 A new should be created at the begining of each pull and discarded |
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383 afterward. |
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384 """ |
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385 |
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386 def __init__(self, repo, remote, heads=None, force=False): |
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387 # repo we pull into |
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388 self.repo = repo |
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389 # repo we pull from |
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390 self.remote = remote |
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391 # revision we try to pull (None is "all") |
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392 self.heads = heads |
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393 # do we force pull? |
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394 self.force = force |
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395 # the name the pull transaction |
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396 self._trname = 'pull\n' + util.hidepassword(remote.url()) |
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397 # hold the transaction once created |
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398 self._tr = None |
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399 # set of common changeset between local and remote before pull |
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400 self.common = None |
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401 # set of pulled head |
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402 self.rheads = None |
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403 # list of missing changeset to fetch remotly |
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404 self.fetch = None |
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405 # result of changegroup pulling (used as returng code by pull) |
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406 self.cgresult = None |
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407 # list of step remaining todo (related to future bundle2 usage) |
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408 self.todosteps = set(['changegroup', 'phases', 'obsmarkers']) |
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409 |
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410 @util.propertycache |
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411 def pulledsubset(self): |
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412 """heads of the set of changeset target by the pull""" |
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413 # compute target subset |
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414 if self.heads is None: |
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415 # We pulled every thing possible |
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416 # sync on everything common |
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417 c = set(self.common) |
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418 ret = list(self.common) |
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419 for n in self.rheads: |
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420 if n not in c: |
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421 ret.append(n) |
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422 return ret |
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423 else: |
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424 # We pulled a specific subset |
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425 # sync on this subset |
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426 return self.heads |
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427 |
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428 def gettransaction(self): |
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429 """get appropriate pull transaction, creating it if needed""" |
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430 if self._tr is None: |
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431 self._tr = self.repo.transaction(self._trname) |
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432 return self._tr |
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433 |
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434 def closetransaction(self): |
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435 """close transaction if created""" |
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436 if self._tr is not None: |
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437 self._tr.close() |
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438 |
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439 def releasetransaction(self): |
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440 """release transaction if created""" |
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441 if self._tr is not None: |
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442 self._tr.release() |
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443 |
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444 def pull(repo, remote, heads=None, force=False): |
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445 pullop = pulloperation(repo, remote, heads, force) |
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446 if pullop.remote.local(): |
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447 missing = set(pullop.remote.requirements) - pullop.repo.supported |
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448 if missing: |
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449 msg = _("required features are not" |
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450 " supported in the destination:" |
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451 " %s") % (', '.join(sorted(missing))) |
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452 raise util.Abort(msg) |
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453 |
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454 lock = pullop.repo.lock() |
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455 try: |
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456 _pulldiscovery(pullop) |
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457 if pullop.remote.capable('bundle2'): |
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458 _pullbundle2(pullop) |
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459 if 'changegroup' in pullop.todosteps: |
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460 _pullchangeset(pullop) |
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461 if 'phases' in pullop.todosteps: |
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462 _pullphase(pullop) |
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463 if 'obsmarkers' in pullop.todosteps: |
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464 _pullobsolete(pullop) |
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465 pullop.closetransaction() |
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466 finally: |
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467 pullop.releasetransaction() |
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468 lock.release() |
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469 |
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470 return pullop.cgresult |
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471 |
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472 def _pulldiscovery(pullop): |
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473 """discovery phase for the pull |
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474 |
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475 Current handle changeset discovery only, will change handle all discovery |
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476 at some point.""" |
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477 tmp = discovery.findcommonincoming(pullop.repo.unfiltered(), |
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478 pullop.remote, |
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479 heads=pullop.heads, |
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480 force=pullop.force) |
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481 pullop.common, pullop.fetch, pullop.rheads = tmp |
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482 |
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483 def _pullbundle2(pullop): |
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484 """pull data using bundle2 |
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485 |
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486 For now, the only supported data are changegroup.""" |
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487 kwargs = {'bundlecaps': set(['HG20'])} |
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488 # pulling changegroup |
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489 pullop.todosteps.remove('changegroup') |
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490 if not pullop.fetch: |
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491 pullop.repo.ui.status(_("no changes found\n")) |
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492 pullop.cgresult = 0 |
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493 else: |
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494 kwargs['common'] = pullop.common |
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495 kwargs['heads'] = pullop.heads or pullop.rheads |
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496 if pullop.heads is None and list(pullop.common) == [nullid]: |
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497 pullop.repo.ui.status(_("requesting all changes\n")) |
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498 if kwargs.keys() == ['format']: |
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499 return # nothing to pull |
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500 bundle = pullop.remote.getbundle('pull', **kwargs) |
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501 try: |
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502 op = bundle2.processbundle(pullop.repo, bundle, pullop.gettransaction) |
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503 except KeyError, exc: |
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504 raise util.Abort('missing support for %s' % exc) |
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505 assert len(op.records['changegroup']) == 1 |
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506 pullop.cgresult = op.records['changegroup'][0]['return'] |
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507 |
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508 def _pullchangeset(pullop): |
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509 """pull changeset from unbundle into the local repo""" |
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510 # We delay the open of the transaction as late as possible so we |
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511 # don't open transaction for nothing or you break future useful |
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512 # rollback call |
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513 pullop.todosteps.remove('changegroup') |
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514 if not pullop.fetch: |
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515 pullop.repo.ui.status(_("no changes found\n")) |
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516 pullop.cgresult = 0 |
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517 return |
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518 pullop.gettransaction() |
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519 if pullop.heads is None and list(pullop.common) == [nullid]: |
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520 pullop.repo.ui.status(_("requesting all changes\n")) |
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521 elif pullop.heads is None and pullop.remote.capable('changegroupsubset'): |
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522 # issue1320, avoid a race if remote changed after discovery |
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523 pullop.heads = pullop.rheads |
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524 |
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525 if pullop.remote.capable('getbundle'): |
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526 # TODO: get bundlecaps from remote |
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527 cg = pullop.remote.getbundle('pull', common=pullop.common, |
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528 heads=pullop.heads or pullop.rheads) |
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529 elif pullop.heads is None: |
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530 cg = pullop.remote.changegroup(pullop.fetch, 'pull') |
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531 elif not pullop.remote.capable('changegroupsubset'): |
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532 raise util.Abort(_("partial pull cannot be done because " |
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533 "other repository doesn't support " |
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534 "changegroupsubset.")) |
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535 else: |
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536 cg = pullop.remote.changegroupsubset(pullop.fetch, pullop.heads, 'pull') |
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537 pullop.cgresult = changegroup.addchangegroup(pullop.repo, cg, 'pull', |
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538 pullop.remote.url()) |
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539 |
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540 def _pullphase(pullop): |
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541 # Get remote phases data from remote |
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542 pullop.todosteps.remove('phases') |
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543 remotephases = pullop.remote.listkeys('phases') |
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544 publishing = bool(remotephases.get('publishing', False)) |
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545 if remotephases and not publishing: |
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546 # remote is new and unpublishing |
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547 pheads, _dr = phases.analyzeremotephases(pullop.repo, |
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548 pullop.pulledsubset, |
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549 remotephases) |
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550 phases.advanceboundary(pullop.repo, phases.public, pheads) |
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551 phases.advanceboundary(pullop.repo, phases.draft, |
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552 pullop.pulledsubset) |
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553 else: |
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554 # Remote is old or publishing all common changesets |
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555 # should be seen as public |
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556 phases.advanceboundary(pullop.repo, phases.public, |
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557 pullop.pulledsubset) |
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558 |
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559 def _pullobsolete(pullop): |
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560 """utility function to pull obsolete markers from a remote |
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561 |
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562 The `gettransaction` is function that return the pull transaction, creating |
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563 one if necessary. We return the transaction to inform the calling code that |
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564 a new transaction have been created (when applicable). |
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565 |
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566 Exists mostly to allow overriding for experimentation purpose""" |
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567 pullop.todosteps.remove('obsmarkers') |
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568 tr = None |
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569 if obsolete._enabled: |
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570 pullop.repo.ui.debug('fetching remote obsolete markers\n') |
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571 remoteobs = pullop.remote.listkeys('obsolete') |
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572 if 'dump0' in remoteobs: |
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573 tr = pullop.gettransaction() |
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574 for key in sorted(remoteobs, reverse=True): |
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575 if key.startswith('dump'): |
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576 data = base85.b85decode(remoteobs[key]) |
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577 pullop.repo.obsstore.mergemarkers(tr, data) |
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578 pullop.repo.invalidatevolatilesets() |
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579 return tr |
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580 |
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581 def getbundle(repo, source, heads=None, common=None, bundlecaps=None): |
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582 """return a full bundle (with potentially multiple kind of parts) |
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583 |
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584 Could be a bundle HG10 or a bundle HG20 depending on bundlecaps |
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585 passed. For now, the bundle can contain only changegroup, but this will |
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586 changes when more part type will be available for bundle2. |
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587 |
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588 This is different from changegroup.getbundle that only returns an HG10 |
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589 changegroup bundle. They may eventually get reunited in the future when we |
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590 have a clearer idea of the API we what to query different data. |
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591 |
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592 The implementation is at a very early stage and will get massive rework |
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593 when the API of bundle is refined. |
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594 """ |
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595 # build bundle here. |
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596 cg = changegroup.getbundle(repo, source, heads=heads, |
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597 common=common, bundlecaps=bundlecaps) |
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598 if bundlecaps is None or 'HG20' not in bundlecaps: |
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599 return cg |
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600 # very crude first implementation, |
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601 # the bundle API will change and the generation will be done lazily. |
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602 bundler = bundle2.bundle20(repo.ui) |
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603 def cgchunks(cg=cg): |
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604 yield 'HG10UN' |
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605 for c in cg.getchunks(): |
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606 yield c |
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607 part = bundle2.bundlepart('changegroup', data=cgchunks()) |
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608 bundler.addpart(part) |
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609 return bundle2.unbundle20(repo.ui, util.chunkbuffer(bundler.getchunks())) |
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610 |
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611 class PushRaced(RuntimeError): |
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612 """An exception raised during unbunding that indicate a push race""" |
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613 |
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614 def check_heads(repo, their_heads, context): |
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615 """check if the heads of a repo have been modified |
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616 |
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617 Used by peer for unbundling. |
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618 """ |
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619 heads = repo.heads() |
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620 heads_hash = util.sha1(''.join(sorted(heads))).digest() |
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621 if not (their_heads == ['force'] or their_heads == heads or |
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622 their_heads == ['hashed', heads_hash]): |
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623 # someone else committed/pushed/unbundled while we |
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624 # were transferring data |
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625 raise PushRaced('repository changed while %s - ' |
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626 'please try again' % context) |
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627 |
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628 def unbundle(repo, cg, heads, source, url): |
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629 """Apply a bundle to a repo. |
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630 |
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631 this function makes sure the repo is locked during the application and have |
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632 mechanism to check that no push race occured between the creation of the |
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633 bundle and its application. |
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634 |
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635 If the push was raced as PushRaced exception is raised.""" |
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636 r = 0 |
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637 lock = repo.lock() |
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638 try: |
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unbundle: extract the core logic in another function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
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639 check_heads(repo, heads, 'uploading changes') |
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unbundle: extract the core logic in another function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20967
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640 # push can proceed |
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localrepo: add unbundle support
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
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641 r = changegroup.addchangegroup(repo, cg, source, url) |
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unbundle: extract the core logic in another function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20967
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642 finally: |
33d5fdd9bd99
unbundle: extract the core logic in another function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20967
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643 lock.release() |
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unbundle: extract the core logic in another function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
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644 return r |