Mercurial > hg
annotate mercurial/discovery.py @ 39634:9dffa99f9158
wireprotov2: add bookmarks to "changesetdata" command
Like we did for phases, we want to emit bookmarks data attached
to each changeset.
The approach here is very similar to phases: we emit bookmarks
data inline with requested revision data. But we emit
records for nodes that weren't requested as well so consumers have
access to the full set of defined bookmarks.
Differential Revision: https://phab.mercurial-scm.org/D4485
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Thu, 23 Aug 2018 18:14:19 -0700 |
parents | 1964d2d1f421 |
children | eb7ce452e0fb |
rev | line source |
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1 # discovery.py - protocol changeset discovery functions |
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2 # |
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3 # Copyright 2010 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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import functools |
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11 |
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12 from .i18n import _ |
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13 from .node import ( |
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14 hex, |
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15 nullid, |
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16 short, |
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17 ) |
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18 |
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19 from . import ( |
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20 bookmarks, |
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21 branchmap, |
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22 error, |
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23 phases, |
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24 scmutil, |
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25 setdiscovery, |
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26 treediscovery, |
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27 util, |
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28 ) |
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29 |
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30 def findcommonincoming(repo, remote, heads=None, force=False, ancestorsof=None): |
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31 """Return a tuple (common, anyincoming, heads) used to identify the common |
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32 subset of nodes between repo and remote. |
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33 |
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34 "common" is a list of (at least) the heads of the common subset. |
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35 "anyincoming" is testable as a boolean indicating if any nodes are missing |
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36 locally. If remote does not support getbundle, this actually is a list of |
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37 roots of the nodes that would be incoming, to be supplied to |
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38 changegroupsubset. No code except for pull should be relying on this fact |
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39 any longer. |
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40 "heads" is either the supplied heads, or else the remote's heads. |
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41 "ancestorsof" if not None, restrict the discovery to a subset defined by |
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42 these nodes. Changeset outside of this set won't be considered (and |
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43 won't appears in "common") |
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44 |
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45 If you pass heads and they are all known locally, the response lists just |
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46 these heads in "common" and in "heads". |
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47 |
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48 Please use findcommonoutgoing to compute the set of outgoing nodes to give |
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49 extensions a good hook into outgoing. |
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50 """ |
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51 |
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52 if not remote.capable('getbundle'): |
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53 return treediscovery.findcommonincoming(repo, remote, heads, force) |
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54 |
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55 if heads: |
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56 knownnode = repo.changelog.hasnode # no nodemap until it is filtered |
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57 if all(knownnode(h) for h in heads): |
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58 return (heads, False, heads) |
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59 |
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60 res = setdiscovery.findcommonheads(repo.ui, repo, remote, |
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61 abortwhenunrelated=not force, |
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62 ancestorsof=ancestorsof) |
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63 common, anyinc, srvheads = res |
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64 return (list(common), anyinc, heads or list(srvheads)) |
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65 |
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66 class outgoing(object): |
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67 '''Represents the set of nodes present in a local repo but not in a |
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68 (possibly) remote one. |
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69 |
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70 Members: |
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71 |
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72 missing is a list of all nodes present in local but not in remote. |
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73 common is a list of all nodes shared between the two repos. |
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74 excluded is the list of missing changeset that shouldn't be sent remotely. |
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75 missingheads is the list of heads of missing. |
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76 commonheads is the list of heads of common. |
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77 |
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78 The sets are computed on demand from the heads, unless provided upfront |
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79 by discovery.''' |
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80 |
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81 def __init__(self, repo, commonheads=None, missingheads=None, |
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82 missingroots=None): |
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83 # at least one of them must not be set |
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84 assert None in (commonheads, missingroots) |
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85 cl = repo.changelog |
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86 if missingheads is None: |
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87 missingheads = cl.heads() |
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88 if missingroots: |
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89 discbases = [] |
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90 for n in missingroots: |
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91 discbases.extend([p for p in cl.parents(n) if p != nullid]) |
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92 # TODO remove call to nodesbetween. |
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93 # TODO populate attributes on outgoing instance instead of setting |
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94 # discbases. |
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95 csets, roots, heads = cl.nodesbetween(missingroots, missingheads) |
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96 included = set(csets) |
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97 missingheads = heads |
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98 commonheads = [n for n in discbases if n not in included] |
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99 elif not commonheads: |
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100 commonheads = [nullid] |
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101 self.commonheads = commonheads |
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102 self.missingheads = missingheads |
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103 self._revlog = cl |
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104 self._common = None |
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105 self._missing = None |
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106 self.excluded = [] |
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107 |
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108 def _computecommonmissing(self): |
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109 sets = self._revlog.findcommonmissing(self.commonheads, |
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110 self.missingheads) |
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111 self._common, self._missing = sets |
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112 |
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113 @util.propertycache |
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114 def common(self): |
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115 if self._common is None: |
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116 self._computecommonmissing() |
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117 return self._common |
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118 |
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119 @util.propertycache |
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120 def missing(self): |
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121 if self._missing is None: |
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122 self._computecommonmissing() |
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123 return self._missing |
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124 |
16683 | 125 def findcommonoutgoing(repo, other, onlyheads=None, force=False, |
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127 '''Return an outgoing instance to identify the nodes present in repo but |
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128 not in other. |
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129 |
16683 | 130 If onlyheads is given, only nodes ancestral to nodes in onlyheads |
131 (inclusive) are included. If you already know the local repo's heads, | |
132 passing them in onlyheads is faster than letting them be recomputed here. | |
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133 |
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134 If commoninc is given, it must be the result of a prior call to |
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135 findcommonincoming(repo, other, force) to avoid recomputing it here. |
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136 |
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137 If portable is given, compute more conservative common and missingheads, |
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138 to make bundles created from the instance more portable.''' |
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139 # declare an empty outgoing object to be filled later |
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140 og = outgoing(repo, None, None) |
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141 |
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142 # get common set if not provided |
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143 if commoninc is None: |
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144 commoninc = findcommonincoming(repo, other, force=force, |
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145 ancestorsof=onlyheads) |
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146 og.commonheads, _any, _hds = commoninc |
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147 |
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148 # compute outgoing |
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149 mayexclude = (repo._phasecache.phaseroots[phases.secret] or repo.obsstore) |
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150 if not mayexclude: |
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151 og.missingheads = onlyheads or repo.heads() |
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152 elif onlyheads is None: |
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153 # use visible heads as it should be cached |
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154 og.missingheads = repo.filtered("served").heads() |
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155 og.excluded = [ctx.node() for ctx in repo.set('secret() or extinct()')] |
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156 else: |
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157 # compute common, missing and exclude secret stuff |
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158 sets = repo.changelog.findcommonmissing(og.commonheads, onlyheads) |
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159 og._common, allmissing = sets |
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160 og._missing = missing = [] |
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161 og.excluded = excluded = [] |
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162 for node in allmissing: |
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163 ctx = repo[node] |
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164 if ctx.phase() >= phases.secret or ctx.extinct(): |
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165 excluded.append(node) |
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166 else: |
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167 missing.append(node) |
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168 if len(missing) == len(allmissing): |
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169 missingheads = onlyheads |
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170 else: # update missing heads |
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171 missingheads = phases.newheads(repo, onlyheads, excluded) |
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172 og.missingheads = missingheads |
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173 if portable: |
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174 # recompute common and missingheads as if -r<rev> had been given for |
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175 # each head of missing, and --base <rev> for each head of the proper |
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176 # ancestors of missing |
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177 og._computecommonmissing() |
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178 cl = repo.changelog |
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179 missingrevs = set(cl.rev(n) for n in og._missing) |
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180 og._common = set(cl.ancestors(missingrevs)) - missingrevs |
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181 commonheads = set(og.commonheads) |
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182 og.missingheads = [h for h in og.missingheads if h not in commonheads] |
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183 |
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184 return og |
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185 |
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186 def _headssummary(pushop): |
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187 """compute a summary of branch and heads status before and after push |
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188 |
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189 return {'branch': ([remoteheads], [newheads], |
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190 [unsyncedheads], [discardedheads])} mapping |
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191 |
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192 - branch: the branch name, |
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193 - remoteheads: the list of remote heads known locally |
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194 None if the branch is new, |
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195 - newheads: the new remote heads (known locally) with outgoing pushed, |
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196 - unsyncedheads: the list of remote heads unknown locally, |
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197 - discardedheads: the list of heads made obsolete by the push. |
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198 """ |
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199 repo = pushop.repo.unfiltered() |
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200 remote = pushop.remote |
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201 outgoing = pushop.outgoing |
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202 cl = repo.changelog |
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203 headssum = {} |
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204 # A. Create set of branches involved in the push. |
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205 branches = set(repo[n].branch() for n in outgoing.missing) |
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206 |
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207 with remote.commandexecutor() as e: |
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208 remotemap = e.callcommand('branchmap', {}).result() |
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209 |
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210 newbranches = branches - set(remotemap) |
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211 branches.difference_update(newbranches) |
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212 |
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213 # A. register remote heads |
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214 remotebranches = set() |
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215 for branch, heads in remotemap.iteritems(): |
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216 remotebranches.add(branch) |
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217 known = [] |
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218 unsynced = [] |
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219 knownnode = cl.hasnode # do not use nodemap until it is filtered |
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220 for h in heads: |
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221 if knownnode(h): |
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222 known.append(h) |
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223 else: |
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224 unsynced.append(h) |
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225 headssum[branch] = (known, list(known), unsynced) |
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226 # B. add new branch data |
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227 missingctx = list(repo[n] for n in outgoing.missing) |
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228 touchedbranches = set() |
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229 for ctx in missingctx: |
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230 branch = ctx.branch() |
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231 touchedbranches.add(branch) |
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232 if branch not in headssum: |
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233 headssum[branch] = (None, [], []) |
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234 |
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235 # C drop data about untouched branches: |
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236 for branch in remotebranches - touchedbranches: |
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237 del headssum[branch] |
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238 |
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239 # D. Update newmap with outgoing changes. |
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240 # This will possibly add new heads and remove existing ones. |
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241 newmap = branchmap.branchcache((branch, heads[1]) |
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242 for branch, heads in headssum.iteritems() |
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243 if heads[0] is not None) |
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244 newmap.update(repo, (ctx.rev() for ctx in missingctx)) |
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245 for branch, newheads in newmap.iteritems(): |
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246 headssum[branch][1][:] = newheads |
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247 for branch, items in headssum.iteritems(): |
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248 for l in items: |
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249 if l is not None: |
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250 l.sort() |
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251 headssum[branch] = items + ([],) |
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252 |
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253 # If there are no obsstore, no post processing are needed. |
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254 if repo.obsstore: |
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255 torev = repo.changelog.rev |
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256 futureheads = set(torev(h) for h in outgoing.missingheads) |
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257 futureheads |= set(torev(h) for h in outgoing.commonheads) |
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258 allfuturecommon = repo.changelog.ancestors(futureheads, inclusive=True) |
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259 for branch, heads in sorted(headssum.iteritems()): |
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260 remoteheads, newheads, unsyncedheads, placeholder = heads |
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261 result = _postprocessobsolete(pushop, allfuturecommon, newheads) |
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262 headssum[branch] = (remoteheads, sorted(result[0]), unsyncedheads, |
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263 sorted(result[1])) |
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264 return headssum |
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265 |
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266 def _oldheadssummary(repo, remoteheads, outgoing, inc=False): |
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267 """Compute branchmapsummary for repo without branchmap support""" |
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268 |
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269 # 1-4b. old servers: Check for new topological heads. |
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270 # Construct {old,new}map with branch = None (topological branch). |
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271 # (code based on update) |
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272 knownnode = repo.changelog.hasnode # no nodemap until it is filtered |
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273 oldheads = sorted(h for h in remoteheads if knownnode(h)) |
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274 # all nodes in outgoing.missing are children of either: |
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275 # - an element of oldheads |
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276 # - another element of outgoing.missing |
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277 # - nullrev |
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278 # This explains why the new head are very simple to compute. |
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279 r = repo.set('heads(%ln + %ln)', oldheads, outgoing.missing) |
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280 newheads = sorted(c.node() for c in r) |
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281 # set some unsynced head to issue the "unsynced changes" warning |
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282 if inc: |
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283 unsynced = [None] |
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284 else: |
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285 unsynced = [] |
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286 return {None: (oldheads, newheads, unsynced, [])} |
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287 |
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288 def _nowarnheads(pushop): |
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289 # Compute newly pushed bookmarks. We don't warn about bookmarked heads. |
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290 repo = pushop.repo.unfiltered() |
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291 remote = pushop.remote |
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292 localbookmarks = repo._bookmarks |
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293 |
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294 with remote.commandexecutor() as e: |
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295 remotebookmarks = e.callcommand('listkeys', { |
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296 'namespace': 'bookmarks', |
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297 }).result() |
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298 |
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299 bookmarkedheads = set() |
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300 |
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301 # internal config: bookmarks.pushing |
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302 newbookmarks = [localbookmarks.expandname(b) |
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303 for b in pushop.ui.configlist('bookmarks', 'pushing')] |
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304 |
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305 for bm in localbookmarks: |
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306 rnode = remotebookmarks.get(bm) |
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307 if rnode and rnode in repo: |
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308 lctx, rctx = localbookmarks.changectx(bm), repo[rnode] |
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309 if bookmarks.validdest(repo, rctx, lctx): |
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310 bookmarkedheads.add(lctx.node()) |
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311 else: |
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312 if bm in newbookmarks and bm not in remotebookmarks: |
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313 bookmarkedheads.add(localbookmarks[bm]) |
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314 |
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315 return bookmarkedheads |
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316 |
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317 def checkheads(pushop): |
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318 """Check that a push won't add any outgoing head |
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319 |
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320 raise Abort error and display ui message as needed. |
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321 """ |
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322 |
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323 repo = pushop.repo.unfiltered() |
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324 remote = pushop.remote |
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325 outgoing = pushop.outgoing |
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326 remoteheads = pushop.remoteheads |
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327 newbranch = pushop.newbranch |
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328 inc = bool(pushop.incoming) |
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329 |
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330 # Check for each named branch if we're creating new remote heads. |
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331 # To be a remote head after push, node must be either: |
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332 # - unknown locally |
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333 # - a local outgoing head descended from update |
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334 # - a remote head that's known locally and not |
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335 # ancestral to an outgoing head |
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336 if remoteheads == [nullid]: |
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337 # remote is empty, nothing to check. |
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338 return |
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339 |
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340 if remote.capable('branchmap'): |
32706
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341 headssum = _headssummary(pushop) |
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342 else: |
17211
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343 headssum = _oldheadssummary(repo, remoteheads, outgoing, inc) |
32709
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344 pushop.pushbranchmap = headssum |
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345 newbranches = [branch for branch, heads in headssum.iteritems() |
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346 if heads[0] is None] |
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347 # 1. Check for new branches on the remote. |
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348 if newbranches and not newbranch: # new branch requires --new-branch |
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349 branchnames = ', '.join(sorted(newbranches)) |
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350 raise error.Abort(_("push creates new remote branches: %s!") |
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351 % branchnames, |
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352 hint=_("use 'hg push --new-branch' to create" |
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353 " new remote branches")) |
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354 |
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355 # 2. Find heads that we need not warn about |
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discovery: pass pushop to _nowarnheads
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356 nowarnheads = _nowarnheads(pushop) |
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checkheads: extract bookmark computation from the branch loop
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357 |
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358 # 3. Check for new heads. |
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359 # If there are more heads after the push than before, a suitable |
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360 # error message, depending on unsynced status, is displayed. |
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361 errormsg = None |
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discovery: process heads in sorted order
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362 for branch, heads in sorted(headssum.iteritems()): |
32708
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headsummary: expose the 'discardedheads' set in the headssummary
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363 remoteheads, newheads, unsyncedheads, discardedheads = heads |
17214
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checkheads: take future obsoleted heads into account
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364 # add unsynced data |
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365 if remoteheads is None: |
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366 oldhs = set() |
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367 else: |
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368 oldhs = set(remoteheads) |
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369 oldhs.update(unsyncedheads) |
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370 dhs = None # delta heads, the new heads on branch |
32675
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371 newhs = set(newheads) |
32673
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checkheads: clarify that we no longer touch the head unknown locally
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|
372 newhs.update(unsyncedheads) |
32674
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checkheads: drop now unused filtering of 'unsyncedheads'
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373 if unsyncedheads: |
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374 if None in unsyncedheads: |
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375 # old remote, no heads data |
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376 heads = None |
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discovery: don't report all "unsynced" remote heads (issue4230)
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parents:
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377 else: |
35184
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scmutil: extra utility to display a reasonable amount of nodes
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378 heads = scmutil.nodesummaries(repo, unsyncedheads) |
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379 if heads is None: |
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380 repo.ui.status(_("remote has heads that are " |
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381 "not known locally\n")) |
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382 elif branch is None: |
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383 repo.ui.status(_("remote has heads that are " |
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384 "not known locally: %s\n") % heads) |
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385 else: |
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386 repo.ui.status(_("remote has heads on branch '%s' that are " |
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387 "not known locally: %s\n") % (branch, heads)) |
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388 if remoteheads is None: |
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389 if len(newhs) > 1: |
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390 dhs = list(newhs) |
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391 if errormsg is None: |
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392 errormsg = (_("push creates new branch '%s' " |
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393 "with multiple heads") % (branch)) |
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394 hint = _("merge or" |
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395 " see 'hg help push' for details about" |
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|
396 " pushing new heads") |
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397 elif len(newhs) > len(oldhs): |
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398 # remove bookmarked or existing remote heads from the new heads list |
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|
399 dhs = sorted(newhs - nowarnheads - oldhs) |
16835
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bookmarks: allow existing remote bookmarks to become heads when pushing
Levi Bard <levi@unity3d.com>
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|
400 if dhs: |
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|
401 if errormsg is None: |
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|
402 if branch not in ('default', None): |
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|
403 errormsg = _("push creates new remote head %s " |
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|
404 "on branch '%s'!") % (short(dhs[0]), branch) |
21580
32601b0b74c0
discovery: if a push would create a new head, mention the bookmark name if any
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parents:
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|
405 elif repo[dhs[0]].bookmarks(): |
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|
406 errormsg = _("push creates new remote head %s " |
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|
407 "with bookmark '%s'!") % ( |
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|
408 short(dhs[0]), repo[dhs[0]].bookmarks()[0]) |
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409 else: |
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|
410 errormsg = _("push creates new remote head %s!" |
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|
411 ) % short(dhs[0]) |
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changeset
|
412 if unsyncedheads: |
19934
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|
413 hint = _("pull and merge or" |
29973
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|
414 " see 'hg help push' for details about" |
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|
415 " pushing new heads") |
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|
416 else: |
19934
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|
417 hint = _("merge or" |
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418 " see 'hg help push' for details about" |
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|
419 " pushing new heads") |
20051
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420 if branch is None: |
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|
421 repo.ui.note(_("new remote heads:\n")) |
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|
422 else: |
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|
423 repo.ui.note(_("new remote heads on branch '%s':\n") % branch) |
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|
424 for h in dhs: |
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|
425 repo.ui.note((" %s\n") % short(h)) |
26585
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|
426 if errormsg: |
26587
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Pierre-Yves David <pierre-yves.david@fb.com>
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diff
changeset
|
427 raise error.Abort(errormsg, hint=hint) |
31586
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diff
changeset
|
428 |
df82f375fa00
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diff
changeset
|
429 def _postprocessobsolete(pushop, futurecommon, candidate_newhs): |
df82f375fa00
checkheads: extract obsolete post processing in its own function
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430 """post process the list of new heads with obsolescence information |
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431 |
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432 Exists as a sub-function to contain the complexity and allow extensions to |
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433 experiment with smarter logic. |
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434 |
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435 Returns (newheads, discarded_heads) tuple |
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436 """ |
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437 # known issue |
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438 # |
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439 # * We "silently" skip processing on all changeset unknown locally |
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440 # |
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441 # * if <nh> is public on the remote, it won't be affected by obsolete |
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442 # marker and a new is created |
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443 |
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444 # define various utilities and containers |
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445 repo = pushop.repo |
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446 unfi = repo.unfiltered() |
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447 tonode = unfi.changelog.node |
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448 torev = unfi.changelog.nodemap.get |
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449 public = phases.public |
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450 getphase = unfi._phasecache.phase |
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451 ispublic = (lambda r: getphase(unfi, r) == public) |
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452 ispushed = (lambda n: torev(n) in futurecommon) |
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453 hasoutmarker = functools.partial(pushingmarkerfor, unfi.obsstore, ispushed) |
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454 successorsmarkers = unfi.obsstore.successors |
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455 newhs = set() # final set of new heads |
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456 discarded = set() # new head of fully replaced branch |
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457 |
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458 localcandidate = set() # candidate heads known locally |
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459 unknownheads = set() # candidate heads unknown locally |
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460 for h in candidate_newhs: |
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461 if h in unfi: |
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462 localcandidate.add(h) |
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463 else: |
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464 if successorsmarkers.get(h) is not None: |
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465 msg = ('checkheads: remote head unknown locally has' |
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466 ' local marker: %s\n') |
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467 repo.ui.debug(msg % hex(h)) |
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468 unknownheads.add(h) |
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469 |
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470 # fast path the simple case |
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471 if len(localcandidate) == 1: |
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472 return unknownheads | set(candidate_newhs), set() |
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473 |
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474 # actually process branch replacement |
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475 while localcandidate: |
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476 nh = localcandidate.pop() |
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477 # run this check early to skip the evaluation of the whole branch |
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478 if (torev(nh) in futurecommon or ispublic(torev(nh))): |
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479 newhs.add(nh) |
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480 continue |
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481 |
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482 # Get all revs/nodes on the branch exclusive to this head |
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483 # (already filtered heads are "ignored")) |
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484 branchrevs = unfi.revs('only(%n, (%ln+%ln))', |
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485 nh, localcandidate, newhs) |
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486 branchnodes = [tonode(r) for r in branchrevs] |
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487 |
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488 # The branch won't be hidden on the remote if |
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489 # * any part of it is public, |
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490 # * any part of it is considered part of the result by previous logic, |
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491 # * if we have no markers to push to obsolete it. |
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492 if (any(ispublic(r) for r in branchrevs) |
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493 or any(torev(n) in futurecommon for n in branchnodes) |
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494 or any(not hasoutmarker(n) for n in branchnodes)): |
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495 newhs.add(nh) |
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496 else: |
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497 # note: there is a corner case if there is a merge in the branch. |
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498 # we might end up with -more- heads. However, these heads are not |
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499 # "added" by the push, but more by the "removal" on the remote so I |
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500 # think is a okay to ignore them, |
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501 discarded.add(nh) |
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502 newhs |= unknownheads |
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503 return newhs, discarded |
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504 |
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505 def pushingmarkerfor(obsstore, ispushed, node): |
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506 """true if some markers are to be pushed for node |
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507 |
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508 We cannot just look in to the pushed obsmarkers from the pushop because |
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509 discovery might have filtered relevant markers. In addition listing all |
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510 markers relevant to all changesets in the pushed set would be too expensive |
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511 (O(len(repo))) |
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512 |
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513 (note: There are cache opportunity in this function. but it would requires |
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514 a two dimensional stack.) |
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515 """ |
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516 successorsmarkers = obsstore.successors |
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517 stack = [node] |
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518 seen = set(stack) |
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519 while stack: |
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520 current = stack.pop() |
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521 if ispushed(current): |
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522 return True |
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523 markers = successorsmarkers.get(current, ()) |
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524 # markers fields = ('prec', 'succs', 'flag', 'meta', 'date', 'parents') |
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525 for m in markers: |
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526 nexts = m[1] # successors |
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checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
527 if not nexts: # this is a prune marker |
32095
c52728b383b4
discovery: prevent crash caused by prune marker having no parent data
Yuya Nishihara <yuya@tcha.org>
parents:
32009
diff
changeset
|
528 nexts = m[5] or () # parents |
32009
c6cb21ddf74a
checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
529 for n in nexts: |
c6cb21ddf74a
checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
530 if n not in seen: |
c6cb21ddf74a
checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
531 seen.add(n) |
c6cb21ddf74a
checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
532 stack.append(n) |
c6cb21ddf74a
checkheads: upgrade the obsolescence postprocessing logic (issue4354)
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
31586
diff
changeset
|
533 return False |