Mercurial > hg
annotate mercurial/exchange.py @ 21732:b6192ea7f7fd
test: introduce test-run-tests.t
This testfile tests the test runner itself. There were multiple regressions in the
last few weeks. Having tests would prevent this in the future.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Fri, 30 May 2014 12:09:49 -0700 |
parents | 09f19e09f1b4 |
children | cd3c79392056 |
rev | line source |
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1 # exchange.py - utility to exchange data between repos. |
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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, urllib |
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11 import util, scmutil, changegroup, base85, error |
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12 import discovery, phases, obsolete, bookmarks, bundle2, pushkey |
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13 |
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14 def readbundle(ui, fh, fname, vfs=None): |
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15 header = changegroup.readexactly(fh, 4) |
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16 |
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17 alg = None |
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18 if not fname: |
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19 fname = "stream" |
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20 if not header.startswith('HG') and header.startswith('\0'): |
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21 fh = changegroup.headerlessfixup(fh, header) |
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22 header = "HG10" |
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23 alg = 'UN' |
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24 elif vfs: |
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25 fname = vfs.join(fname) |
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26 |
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27 magic, version = header[0:2], header[2:4] |
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28 |
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29 if magic != 'HG': |
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30 raise util.Abort(_('%s: not a Mercurial bundle') % fname) |
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31 if version == '10': |
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32 if alg is None: |
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33 alg = changegroup.readexactly(fh, 2) |
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34 return changegroup.unbundle10(fh, alg) |
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35 elif version == '2X': |
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36 return bundle2.unbundle20(ui, fh, header=magic + version) |
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37 else: |
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38 raise util.Abort(_('%s: unknown bundle version %s') % (fname, version)) |
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39 |
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40 |
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41 class pushoperation(object): |
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42 """A object that represent a single push operation |
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43 |
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44 It purpose is to carry push related state and very common operation. |
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45 |
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46 A new should be created at the beginning of each push and discarded |
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47 afterward. |
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48 """ |
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49 |
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50 def __init__(self, repo, remote, force=False, revs=None, newbranch=False): |
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51 # repo we push from |
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52 self.repo = repo |
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53 self.ui = repo.ui |
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54 # repo we push to |
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55 self.remote = remote |
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56 # force option provided |
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57 self.force = force |
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58 # revs to be pushed (None is "all") |
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59 self.revs = revs |
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60 # allow push of new branch |
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61 self.newbranch = newbranch |
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62 # did a local lock get acquired? |
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63 self.locallocked = None |
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64 # Integer version of the push result |
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65 # - None means nothing to push |
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66 # - 0 means HTTP error |
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67 # - 1 means we pushed and remote head count is unchanged *or* |
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68 # we have outgoing changesets but refused to push |
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69 # - other values as described by addchangegroup() |
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70 self.ret = None |
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71 # discover.outgoing object (contains common and outgoing data) |
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72 self.outgoing = None |
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73 # all remote heads before the push |
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74 self.remoteheads = None |
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75 # testable as a boolean indicating if any nodes are missing locally. |
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76 self.incoming = None |
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77 # set of all heads common after changeset bundle push |
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78 self.commonheads = None |
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79 |
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80 def push(repo, remote, force=False, revs=None, newbranch=False): |
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81 '''Push outgoing changesets (limited by revs) from a local |
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82 repository to remote. Return an integer: |
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83 - None means nothing to push |
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84 - 0 means HTTP error |
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85 - 1 means we pushed and remote head count is unchanged *or* |
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86 we have outgoing changesets but refused to push |
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87 - other values as described by addchangegroup() |
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88 ''' |
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89 pushop = pushoperation(repo, remote, force, revs, newbranch) |
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90 if pushop.remote.local(): |
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91 missing = (set(pushop.repo.requirements) |
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92 - pushop.remote.local().supported) |
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93 if missing: |
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94 msg = _("required features are not" |
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95 " supported in the destination:" |
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96 " %s") % (', '.join(sorted(missing))) |
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97 raise util.Abort(msg) |
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98 |
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99 # there are two ways to push to remote repo: |
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100 # |
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101 # addchangegroup assumes local user can lock remote |
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102 # repo (local filesystem, old ssh servers). |
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103 # |
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104 # unbundle assumes local user cannot lock remote repo (new ssh |
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105 # servers, http servers). |
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106 |
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107 if not pushop.remote.canpush(): |
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108 raise util.Abort(_("destination does not support push")) |
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109 # get local lock as we might write phase data |
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110 locallock = None |
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111 try: |
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112 locallock = pushop.repo.lock() |
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113 pushop.locallocked = True |
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114 except IOError, err: |
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115 pushop.locallocked = False |
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116 if err.errno != errno.EACCES: |
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117 raise |
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118 # source repo cannot be locked. |
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119 # We do not abort the push, but just disable the local phase |
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120 # synchronisation. |
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121 msg = 'cannot lock source repository: %s\n' % err |
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122 pushop.ui.debug(msg) |
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123 try: |
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124 pushop.repo.checkpush(pushop) |
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125 lock = None |
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126 unbundle = pushop.remote.capable('unbundle') |
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127 if not unbundle: |
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128 lock = pushop.remote.lock() |
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129 try: |
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130 _pushdiscovery(pushop) |
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131 if _pushcheckoutgoing(pushop): |
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132 pushop.repo.prepushoutgoinghooks(pushop.repo, |
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133 pushop.remote, |
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134 pushop.outgoing) |
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135 if (pushop.repo.ui.configbool('experimental', 'bundle2-exp', |
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136 False) |
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137 and pushop.remote.capable('bundle2-exp')): |
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138 _pushbundle2(pushop) |
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139 else: |
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140 _pushchangeset(pushop) |
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141 _pushcomputecommonheads(pushop) |
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142 _pushsyncphase(pushop) |
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143 _pushobsolete(pushop) |
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144 finally: |
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145 if lock is not None: |
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146 lock.release() |
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147 finally: |
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148 if locallock is not None: |
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149 locallock.release() |
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150 |
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151 _pushbookmark(pushop) |
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152 return pushop.ret |
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153 |
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154 def _pushdiscovery(pushop): |
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155 # discovery |
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156 unfi = pushop.repo.unfiltered() |
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157 fci = discovery.findcommonincoming |
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158 commoninc = fci(unfi, pushop.remote, force=pushop.force) |
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159 common, inc, remoteheads = commoninc |
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160 fco = discovery.findcommonoutgoing |
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161 outgoing = fco(unfi, pushop.remote, onlyheads=pushop.revs, |
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162 commoninc=commoninc, force=pushop.force) |
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163 pushop.outgoing = outgoing |
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164 pushop.remoteheads = remoteheads |
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165 pushop.incoming = inc |
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166 |
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167 def _pushcheckoutgoing(pushop): |
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168 outgoing = pushop.outgoing |
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169 unfi = pushop.repo.unfiltered() |
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170 if not outgoing.missing: |
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171 # nothing to push |
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172 scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded) |
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173 return False |
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174 # something to push |
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175 if not pushop.force: |
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176 # if repo.obsstore == False --> no obsolete |
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177 # then, save the iteration |
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178 if unfi.obsstore: |
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179 # this message are here for 80 char limit reason |
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180 mso = _("push includes obsolete changeset: %s!") |
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181 mst = "push includes %s changeset: %s!" |
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182 # plain versions for i18n tool to detect them |
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183 _("push includes unstable changeset: %s!") |
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184 _("push includes bumped changeset: %s!") |
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185 _("push includes divergent changeset: %s!") |
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186 # If we are to push if there is at least one |
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187 # obsolete or unstable changeset in missing, at |
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188 # least one of the missinghead will be obsolete or |
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189 # unstable. So checking heads only is ok |
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190 for node in outgoing.missingheads: |
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191 ctx = unfi[node] |
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192 if ctx.obsolete(): |
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193 raise util.Abort(mso % ctx) |
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194 elif ctx.troubled(): |
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195 raise util.Abort(_(mst) |
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196 % (ctx.troubles()[0], |
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197 ctx)) |
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198 newbm = pushop.ui.configlist('bookmarks', 'pushing') |
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199 discovery.checkheads(unfi, pushop.remote, outgoing, |
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200 pushop.remoteheads, |
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201 pushop.newbranch, |
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202 bool(pushop.incoming), |
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203 newbm) |
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204 return True |
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205 |
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206 def _pushbundle2(pushop): |
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207 """push data to the remote using bundle2 |
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208 |
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209 The only currently supported type of data is changegroup but this will |
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210 evolve in the future.""" |
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211 bundler = bundle2.bundle20(pushop.ui, bundle2.bundle2caps(pushop.remote)) |
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212 # create reply capability |
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213 capsblob = bundle2.encodecaps(pushop.repo.bundle2caps) |
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214 bundler.newpart('b2x:replycaps', data=capsblob) |
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215 # Send known heads to the server for race detection. |
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216 if not pushop.force: |
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217 bundler.newpart('B2X:CHECK:HEADS', data=iter(pushop.remoteheads)) |
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218 extrainfo = _pushbundle2extraparts(pushop, bundler) |
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219 # add the changegroup bundle |
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220 cg = changegroup.getlocalbundle(pushop.repo, 'push', pushop.outgoing) |
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221 cgpart = bundler.newpart('B2X:CHANGEGROUP', data=cg.getchunks()) |
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222 stream = util.chunkbuffer(bundler.getchunks()) |
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223 try: |
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224 reply = pushop.remote.unbundle(stream, ['force'], 'push') |
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225 except error.BundleValueError, exc: |
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226 raise util.Abort('missing support for %s' % exc) |
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227 try: |
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228 op = bundle2.processbundle(pushop.repo, reply) |
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229 except error.BundleValueError, exc: |
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230 raise util.Abort('missing support for %s' % exc) |
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231 cgreplies = op.records.getreplies(cgpart.id) |
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232 assert len(cgreplies['changegroup']) == 1 |
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233 pushop.ret = cgreplies['changegroup'][0]['return'] |
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234 _pushbundle2extrareply(pushop, op, extrainfo) |
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235 |
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236 def _pushbundle2extraparts(pushop, bundler): |
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237 """hook function to let extensions add parts |
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238 |
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239 Return a dict to let extensions pass data to the reply processing. |
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240 """ |
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241 return {} |
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242 |
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243 def _pushbundle2extrareply(pushop, op, extrainfo): |
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244 """hook function to let extensions react to part replies |
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245 |
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246 The dict from _pushbundle2extrareply is fed to this function. |
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247 """ |
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248 pass |
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249 |
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250 def _pushchangeset(pushop): |
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251 """Make the actual push of changeset bundle to remote repo""" |
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252 outgoing = pushop.outgoing |
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253 unbundle = pushop.remote.capable('unbundle') |
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254 # TODO: get bundlecaps from remote |
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255 bundlecaps = None |
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256 # create a changegroup from local |
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257 if pushop.revs is None and not (outgoing.excluded |
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258 or pushop.repo.changelog.filteredrevs): |
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259 # push everything, |
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260 # use the fast path, no race possible on push |
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261 bundler = changegroup.bundle10(pushop.repo, bundlecaps) |
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262 cg = changegroup.getsubset(pushop.repo, |
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263 outgoing, |
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264 bundler, |
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265 'push', |
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266 fastpath=True) |
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267 else: |
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268 cg = changegroup.getlocalbundle(pushop.repo, 'push', outgoing, |
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269 bundlecaps) |
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270 |
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271 # apply changegroup to remote |
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272 if unbundle: |
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273 # local repo finds heads on server, finds out what |
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274 # revs it must push. once revs transferred, if server |
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275 # finds it has different heads (someone else won |
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276 # commit/push race), server aborts. |
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277 if pushop.force: |
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278 remoteheads = ['force'] |
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279 else: |
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280 remoteheads = pushop.remoteheads |
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281 # ssh: return remote's addchangegroup() |
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282 # http: return remote's addchangegroup() or 0 for error |
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283 pushop.ret = pushop.remote.unbundle(cg, remoteheads, |
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284 'push') |
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285 else: |
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286 # we return an integer indicating remote head count |
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287 # change |
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288 pushop.ret = pushop.remote.addchangegroup(cg, 'push', pushop.repo.url()) |
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289 |
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290 def _pushcomputecommonheads(pushop): |
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291 unfi = pushop.repo.unfiltered() |
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292 if pushop.ret: |
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293 # push succeed, synchronize target of the push |
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294 cheads = pushop.outgoing.missingheads |
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295 elif pushop.revs is None: |
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296 # All out push fails. synchronize all common |
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297 cheads = pushop.outgoing.commonheads |
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298 else: |
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299 # I want cheads = heads(::missingheads and ::commonheads) |
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300 # (missingheads is revs with secret changeset filtered out) |
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301 # |
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302 # This can be expressed as: |
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303 # cheads = ( (missingheads and ::commonheads) |
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304 # + (commonheads and ::missingheads))" |
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305 # ) |
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306 # |
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307 # while trying to push we already computed the following: |
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308 # common = (::commonheads) |
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309 # missing = ((commonheads::missingheads) - commonheads) |
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310 # |
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311 # We can pick: |
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312 # * missingheads part of common (::commonheads) |
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313 common = set(pushop.outgoing.common) |
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314 nm = pushop.repo.changelog.nodemap |
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315 cheads = [node for node in pushop.revs if nm[node] in common] |
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316 # and |
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317 # * commonheads parents on missing |
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318 revset = unfi.set('%ln and parents(roots(%ln))', |
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319 pushop.outgoing.commonheads, |
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320 pushop.outgoing.missing) |
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321 cheads.extend(c.node() for c in revset) |
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322 pushop.commonheads = cheads |
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323 |
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324 def _pushsyncphase(pushop): |
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325 """synchronise phase information locally and remotely""" |
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326 unfi = pushop.repo.unfiltered() |
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327 cheads = pushop.commonheads |
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328 # even when we don't push, exchanging phase data is useful |
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329 remotephases = pushop.remote.listkeys('phases') |
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330 if (pushop.ui.configbool('ui', '_usedassubrepo', False) |
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331 and remotephases # server supports phases |
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332 and pushop.ret is None # nothing was pushed |
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333 and remotephases.get('publishing', False)): |
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334 # When: |
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335 # - this is a subrepo push |
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336 # - and remote support phase |
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337 # - and no changeset was pushed |
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338 # - and remote is publishing |
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339 # We may be in issue 3871 case! |
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340 # We drop the possible phase synchronisation done by |
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341 # courtesy to publish changesets possibly locally draft |
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342 # on the remote. |
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343 remotephases = {'publishing': 'True'} |
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344 if not remotephases: # old server or public only reply from non-publishing |
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345 _localphasemove(pushop, cheads) |
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346 # don't push any phase data as there is nothing to push |
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347 else: |
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348 ana = phases.analyzeremotephases(pushop.repo, cheads, |
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349 remotephases) |
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350 pheads, droots = ana |
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351 ### Apply remote phase on local |
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352 if remotephases.get('publishing', False): |
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353 _localphasemove(pushop, cheads) |
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354 else: # publish = False |
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355 _localphasemove(pushop, pheads) |
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356 _localphasemove(pushop, cheads, phases.draft) |
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357 ### Apply local phase on remote |
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358 |
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359 # Get the list of all revs draft on remote by public here. |
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360 # XXX Beware that revset break if droots is not strictly |
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361 # XXX root we may want to ensure it is but it is costly |
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362 outdated = unfi.set('heads((%ln::%ln) and public())', |
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363 droots, cheads) |
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364 |
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365 b2caps = bundle2.bundle2caps(pushop.remote) |
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366 if 'b2x:pushkey' in b2caps: |
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367 # server supports bundle2, let's do a batched push through it |
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368 # |
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369 # This will eventually be unified with the changesets bundle2 push |
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370 bundler = bundle2.bundle20(pushop.ui, b2caps) |
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371 capsblob = bundle2.encodecaps(pushop.repo.bundle2caps) |
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372 bundler.newpart('b2x:replycaps', data=capsblob) |
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373 part2node = [] |
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374 enc = pushkey.encode |
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375 for newremotehead in outdated: |
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376 part = bundler.newpart('b2x:pushkey') |
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377 part.addparam('namespace', enc('phases')) |
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378 part.addparam('key', enc(newremotehead.hex())) |
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379 part.addparam('old', enc(str(phases.draft))) |
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380 part.addparam('new', enc(str(phases.public))) |
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381 part2node.append((part.id, newremotehead)) |
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382 stream = util.chunkbuffer(bundler.getchunks()) |
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383 try: |
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384 reply = pushop.remote.unbundle(stream, ['force'], 'push') |
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385 op = bundle2.processbundle(pushop.repo, reply) |
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386 except error.BundleValueError, exc: |
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387 raise util.Abort('missing support for %s' % exc) |
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388 for partid, node in part2node: |
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389 partrep = op.records.getreplies(partid) |
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390 results = partrep['pushkey'] |
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391 assert len(results) <= 1 |
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392 msg = None |
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393 if not results: |
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394 msg = _('server ignored update of %s to public!\n') % node |
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395 elif not int(results[0]['return']): |
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396 msg = _('updating %s to public failed!\n') % node |
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397 if msg is not None: |
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398 pushop.ui.warn(msg) |
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399 |
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400 else: |
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401 # fallback to independant pushkey command |
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402 for newremotehead in outdated: |
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403 r = pushop.remote.pushkey('phases', |
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404 newremotehead.hex(), |
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405 str(phases.draft), |
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406 str(phases.public)) |
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407 if not r: |
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408 pushop.ui.warn(_('updating %s to public failed!\n') |
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409 % newremotehead) |
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410 |
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411 def _localphasemove(pushop, nodes, phase=phases.public): |
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412 """move <nodes> to <phase> in the local source repo""" |
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413 if pushop.locallocked: |
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414 phases.advanceboundary(pushop.repo, phase, nodes) |
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415 else: |
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416 # repo is not locked, do not change any phases! |
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417 # Informs the user that phases should have been moved when |
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418 # applicable. |
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419 actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()] |
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420 phasestr = phases.phasenames[phase] |
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421 if actualmoves: |
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422 pushop.ui.status(_('cannot lock source repo, skipping ' |
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423 'local %s phase update\n') % phasestr) |
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424 |
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425 def _pushobsolete(pushop): |
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426 """utility function to push obsolete markers to a remote""" |
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427 pushop.ui.debug('try to push obsolete markers to remote\n') |
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428 repo = pushop.repo |
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429 remote = pushop.remote |
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430 if (obsolete._enabled and repo.obsstore and |
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431 'obsolete' in remote.listkeys('namespaces')): |
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432 rslts = [] |
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433 remotedata = repo.listkeys('obsolete') |
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434 for key in sorted(remotedata, reverse=True): |
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435 # reverse sort to ensure we end with dump0 |
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436 data = remotedata[key] |
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437 rslts.append(remote.pushkey('obsolete', key, '', data)) |
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438 if [r for r in rslts if not r]: |
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439 msg = _('failed to push some obsolete markers!\n') |
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440 repo.ui.warn(msg) |
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441 |
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442 def _pushbookmark(pushop): |
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443 """Update bookmark position on remote""" |
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444 ui = pushop.ui |
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445 repo = pushop.repo.unfiltered() |
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446 remote = pushop.remote |
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447 ui.debug("checking for updated bookmarks\n") |
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448 revnums = map(repo.changelog.rev, pushop.revs or []) |
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449 ancestors = [a for a in repo.changelog.ancestors(revnums, inclusive=True)] |
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450 (addsrc, adddst, advsrc, advdst, diverge, differ, invalid |
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451 ) = bookmarks.compare(repo, repo._bookmarks, remote.listkeys('bookmarks'), |
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452 srchex=hex) |
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453 |
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454 for b, scid, dcid in advsrc: |
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455 if ancestors and repo[scid].rev() not in ancestors: |
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456 continue |
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457 if remote.pushkey('bookmarks', b, dcid, scid): |
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458 ui.status(_("updating bookmark %s\n") % b) |
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459 else: |
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460 ui.warn(_('updating bookmark %s failed!\n') % b) |
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461 |
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462 class pulloperation(object): |
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463 """A object that represent a single pull operation |
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464 |
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465 It purpose is to carry push related state and very common operation. |
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466 |
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467 A new should be created at the beginning of each pull and discarded |
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468 afterward. |
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469 """ |
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470 |
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471 def __init__(self, repo, remote, heads=None, force=False): |
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472 # repo we pull into |
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473 self.repo = repo |
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474 # repo we pull from |
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475 self.remote = remote |
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476 # revision we try to pull (None is "all") |
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477 self.heads = heads |
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478 # do we force pull? |
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479 self.force = force |
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480 # the name the pull transaction |
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481 self._trname = 'pull\n' + util.hidepassword(remote.url()) |
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482 # hold the transaction once created |
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483 self._tr = None |
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484 # set of common changeset between local and remote before pull |
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485 self.common = None |
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486 # set of pulled head |
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487 self.rheads = None |
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488 # list of missing changeset to fetch remotely |
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489 self.fetch = None |
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490 # result of changegroup pulling (used as return code by pull) |
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491 self.cgresult = None |
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492 # list of step remaining todo (related to future bundle2 usage) |
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493 self.todosteps = set(['changegroup', 'phases', 'obsmarkers']) |
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494 |
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495 @util.propertycache |
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496 def pulledsubset(self): |
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497 """heads of the set of changeset target by the pull""" |
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498 # compute target subset |
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499 if self.heads is None: |
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500 # We pulled every thing possible |
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501 # sync on everything common |
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502 c = set(self.common) |
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503 ret = list(self.common) |
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504 for n in self.rheads: |
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505 if n not in c: |
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506 ret.append(n) |
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507 return ret |
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508 else: |
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509 # We pulled a specific subset |
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510 # sync on this subset |
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511 return self.heads |
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512 |
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513 def gettransaction(self): |
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514 """get appropriate pull transaction, creating it if needed""" |
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515 if self._tr is None: |
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516 self._tr = self.repo.transaction(self._trname) |
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517 return self._tr |
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518 |
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519 def closetransaction(self): |
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520 """close transaction if created""" |
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521 if self._tr is not None: |
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522 self._tr.close() |
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523 |
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524 def releasetransaction(self): |
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525 """release transaction if created""" |
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526 if self._tr is not None: |
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527 self._tr.release() |
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528 |
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529 def pull(repo, remote, heads=None, force=False): |
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530 pullop = pulloperation(repo, remote, heads, force) |
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531 if pullop.remote.local(): |
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532 missing = set(pullop.remote.requirements) - pullop.repo.supported |
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533 if missing: |
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534 msg = _("required features are not" |
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535 " supported in the destination:" |
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536 " %s") % (', '.join(sorted(missing))) |
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537 raise util.Abort(msg) |
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538 |
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539 lock = pullop.repo.lock() |
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540 try: |
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541 _pulldiscovery(pullop) |
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542 if (pullop.repo.ui.configbool('experimental', 'bundle2-exp', False) |
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543 and pullop.remote.capable('bundle2-exp')): |
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544 _pullbundle2(pullop) |
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545 if 'changegroup' in pullop.todosteps: |
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546 _pullchangeset(pullop) |
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547 if 'phases' in pullop.todosteps: |
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548 _pullphase(pullop) |
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549 if 'obsmarkers' in pullop.todosteps: |
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550 _pullobsolete(pullop) |
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551 pullop.closetransaction() |
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552 finally: |
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553 pullop.releasetransaction() |
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554 lock.release() |
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555 |
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556 return pullop.cgresult |
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557 |
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558 def _pulldiscovery(pullop): |
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559 """discovery phase for the pull |
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560 |
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561 Current handle changeset discovery only, will change handle all discovery |
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562 at some point.""" |
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563 tmp = discovery.findcommonincoming(pullop.repo.unfiltered(), |
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564 pullop.remote, |
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565 heads=pullop.heads, |
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566 force=pullop.force) |
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567 pullop.common, pullop.fetch, pullop.rheads = tmp |
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568 |
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569 def _pullbundle2(pullop): |
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570 """pull data using bundle2 |
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571 |
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572 For now, the only supported data are changegroup.""" |
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573 remotecaps = bundle2.bundle2caps(pullop.remote) |
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574 kwargs = {'bundlecaps': caps20to10(pullop.repo)} |
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575 # pulling changegroup |
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576 pullop.todosteps.remove('changegroup') |
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577 |
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578 kwargs['common'] = pullop.common |
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579 kwargs['heads'] = pullop.heads or pullop.rheads |
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580 if 'b2x:listkeys' in remotecaps: |
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581 kwargs['listkeys'] = ['phase'] |
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582 if not pullop.fetch: |
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583 pullop.repo.ui.status(_("no changes found\n")) |
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584 pullop.cgresult = 0 |
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585 else: |
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586 if pullop.heads is None and list(pullop.common) == [nullid]: |
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587 pullop.repo.ui.status(_("requesting all changes\n")) |
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588 _pullbundle2extraprepare(pullop, kwargs) |
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589 if kwargs.keys() == ['format']: |
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590 return # nothing to pull |
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591 bundle = pullop.remote.getbundle('pull', **kwargs) |
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592 try: |
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593 op = bundle2.processbundle(pullop.repo, bundle, pullop.gettransaction) |
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594 except error.BundleValueError, exc: |
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595 raise util.Abort('missing support for %s' % exc) |
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596 |
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597 if pullop.fetch: |
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598 assert len(op.records['changegroup']) == 1 |
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599 pullop.cgresult = op.records['changegroup'][0]['return'] |
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600 |
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601 # processing phases change |
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602 for namespace, value in op.records['listkeys']: |
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603 if namespace == 'phases': |
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604 _pullapplyphases(pullop, value) |
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605 |
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606 def _pullbundle2extraprepare(pullop, kwargs): |
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607 """hook function so that extensions can extend the getbundle call""" |
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608 pass |
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609 |
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610 def _pullchangeset(pullop): |
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611 """pull changeset from unbundle into the local repo""" |
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612 # We delay the open of the transaction as late as possible so we |
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613 # don't open transaction for nothing or you break future useful |
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614 # rollback call |
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615 pullop.todosteps.remove('changegroup') |
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616 if not pullop.fetch: |
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617 pullop.repo.ui.status(_("no changes found\n")) |
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618 pullop.cgresult = 0 |
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619 return |
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620 pullop.gettransaction() |
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621 if pullop.heads is None and list(pullop.common) == [nullid]: |
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622 pullop.repo.ui.status(_("requesting all changes\n")) |
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623 elif pullop.heads is None and pullop.remote.capable('changegroupsubset'): |
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624 # issue1320, avoid a race if remote changed after discovery |
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625 pullop.heads = pullop.rheads |
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626 |
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627 if pullop.remote.capable('getbundle'): |
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628 # TODO: get bundlecaps from remote |
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629 cg = pullop.remote.getbundle('pull', common=pullop.common, |
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630 heads=pullop.heads or pullop.rheads) |
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631 elif pullop.heads is None: |
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632 cg = pullop.remote.changegroup(pullop.fetch, 'pull') |
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633 elif not pullop.remote.capable('changegroupsubset'): |
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634 raise util.Abort(_("partial pull cannot be done because " |
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635 "other repository doesn't support " |
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636 "changegroupsubset.")) |
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637 else: |
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638 cg = pullop.remote.changegroupsubset(pullop.fetch, pullop.heads, 'pull') |
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639 pullop.cgresult = changegroup.addchangegroup(pullop.repo, cg, 'pull', |
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640 pullop.remote.url()) |
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641 |
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642 def _pullphase(pullop): |
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643 # Get remote phases data from remote |
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644 remotephases = pullop.remote.listkeys('phases') |
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645 _pullapplyphases(pullop, remotephases) |
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646 |
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647 def _pullapplyphases(pullop, remotephases): |
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648 """apply phase movement from observed remote state""" |
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649 pullop.todosteps.remove('phases') |
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650 publishing = bool(remotephases.get('publishing', False)) |
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651 if remotephases and not publishing: |
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652 # remote is new and unpublishing |
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653 pheads, _dr = phases.analyzeremotephases(pullop.repo, |
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654 pullop.pulledsubset, |
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655 remotephases) |
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656 phases.advanceboundary(pullop.repo, phases.public, pheads) |
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657 phases.advanceboundary(pullop.repo, phases.draft, |
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658 pullop.pulledsubset) |
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659 else: |
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660 # Remote is old or publishing all common changesets |
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661 # should be seen as public |
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662 phases.advanceboundary(pullop.repo, phases.public, |
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663 pullop.pulledsubset) |
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664 |
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665 def _pullobsolete(pullop): |
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666 """utility function to pull obsolete markers from a remote |
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667 |
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668 The `gettransaction` is function that return the pull transaction, creating |
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669 one if necessary. We return the transaction to inform the calling code that |
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670 a new transaction have been created (when applicable). |
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671 |
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672 Exists mostly to allow overriding for experimentation purpose""" |
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673 pullop.todosteps.remove('obsmarkers') |
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674 tr = None |
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675 if obsolete._enabled: |
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676 pullop.repo.ui.debug('fetching remote obsolete markers\n') |
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677 remoteobs = pullop.remote.listkeys('obsolete') |
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678 if 'dump0' in remoteobs: |
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679 tr = pullop.gettransaction() |
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680 for key in sorted(remoteobs, reverse=True): |
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681 if key.startswith('dump'): |
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682 data = base85.b85decode(remoteobs[key]) |
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683 pullop.repo.obsstore.mergemarkers(tr, data) |
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684 pullop.repo.invalidatevolatilesets() |
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685 return tr |
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686 |
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687 def caps20to10(repo): |
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688 """return a set with appropriate options to use bundle20 during getbundle""" |
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689 caps = set(['HG2X']) |
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690 capsblob = bundle2.encodecaps(repo.bundle2caps) |
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691 caps.add('bundle2=' + urllib.quote(capsblob)) |
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692 return caps |
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693 |
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694 def getbundle(repo, source, heads=None, common=None, bundlecaps=None, |
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695 **kwargs): |
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696 """return a full bundle (with potentially multiple kind of parts) |
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697 |
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698 Could be a bundle HG10 or a bundle HG2X depending on bundlecaps |
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699 passed. For now, the bundle can contain only changegroup, but this will |
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700 changes when more part type will be available for bundle2. |
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701 |
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702 This is different from changegroup.getbundle that only returns an HG10 |
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703 changegroup bundle. They may eventually get reunited in the future when we |
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704 have a clearer idea of the API we what to query different data. |
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705 |
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706 The implementation is at a very early stage and will get massive rework |
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707 when the API of bundle is refined. |
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708 """ |
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709 # build changegroup bundle here. |
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710 cg = changegroup.getbundle(repo, source, heads=heads, |
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711 common=common, bundlecaps=bundlecaps) |
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712 if bundlecaps is None or 'HG2X' not in bundlecaps: |
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713 if kwargs: |
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714 raise ValueError(_('unsupported getbundle arguments: %s') |
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715 % ', '.join(sorted(kwargs.keys()))) |
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716 return cg |
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717 # very crude first implementation, |
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718 # the bundle API will change and the generation will be done lazily. |
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719 b2caps = {} |
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720 for bcaps in bundlecaps: |
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721 if bcaps.startswith('bundle2='): |
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722 blob = urllib.unquote(bcaps[len('bundle2='):]) |
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723 b2caps.update(bundle2.decodecaps(blob)) |
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724 bundler = bundle2.bundle20(repo.ui, b2caps) |
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725 if cg: |
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726 bundler.newpart('b2x:changegroup', data=cg.getchunks()) |
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727 listkeys = kwargs.get('listkeys', ()) |
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728 for namespace in listkeys: |
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729 part = bundler.newpart('b2x:listkeys') |
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730 part.addparam('namespace', namespace) |
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731 keys = repo.listkeys(namespace).items() |
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732 part.data = pushkey.encodekeys(keys) |
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733 _getbundleextrapart(bundler, repo, source, heads=heads, common=common, |
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734 bundlecaps=bundlecaps, **kwargs) |
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735 return util.chunkbuffer(bundler.getchunks()) |
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736 |
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737 def _getbundleextrapart(bundler, repo, source, heads=None, common=None, |
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738 bundlecaps=None, **kwargs): |
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739 """hook function to let extensions add parts to the requested bundle""" |
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740 pass |
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741 |
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742 def check_heads(repo, their_heads, context): |
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743 """check if the heads of a repo have been modified |
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744 |
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745 Used by peer for unbundling. |
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746 """ |
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747 heads = repo.heads() |
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748 heads_hash = util.sha1(''.join(sorted(heads))).digest() |
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749 if not (their_heads == ['force'] or their_heads == heads or |
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750 their_heads == ['hashed', heads_hash]): |
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751 # someone else committed/pushed/unbundled while we |
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752 # were transferring data |
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753 raise error.PushRaced('repository changed while %s - ' |
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754 'please try again' % context) |
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755 |
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756 def unbundle(repo, cg, heads, source, url): |
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757 """Apply a bundle to a repo. |
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758 |
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759 this function makes sure the repo is locked during the application and have |
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760 mechanism to check that no push race occurred between the creation of the |
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761 bundle and its application. |
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762 |
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763 If the push was raced as PushRaced exception is raised.""" |
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764 r = 0 |
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765 # need a transaction when processing a bundle2 stream |
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766 tr = None |
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767 lock = repo.lock() |
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768 try: |
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769 check_heads(repo, heads, 'uploading changes') |
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770 # push can proceed |
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771 if util.safehasattr(cg, 'params'): |
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772 try: |
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773 tr = repo.transaction('unbundle') |
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774 tr.hookargs['bundle2-exp'] = '1' |
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775 r = bundle2.processbundle(repo, cg, lambda: tr).reply |
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776 cl = repo.unfiltered().changelog |
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777 p = cl.writepending() and repo.root or "" |
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778 repo.hook('b2x-pretransactionclose', throw=True, source=source, |
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779 url=url, pending=p, **tr.hookargs) |
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780 tr.close() |
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781 repo.hook('b2x-transactionclose', source=source, url=url, |
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782 **tr.hookargs) |
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783 except Exception, exc: |
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784 exc.duringunbundle2 = True |
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785 raise |
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786 else: |
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787 r = changegroup.addchangegroup(repo, cg, source, url) |
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788 finally: |
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789 if tr is not None: |
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790 tr.release() |
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791 lock.release() |
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792 return r |