Mercurial > hg
annotate mercurial/discovery.py @ 48673:576040155dba
arbitraryfilectx: use our existing helpers for reading and writing files
Differential Revision: https://phab.mercurial-scm.org/D12090
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Wed, 26 Jan 2022 15:32:18 -0800 |
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1 # discovery.py - protocol changeset discovery functions |
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2 # |
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3 # Copyright 2010 Olivia Mackall <olivia@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 short, |
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16 ) |
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17 |
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18 from . import ( |
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19 bookmarks, |
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20 branchmap, |
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21 error, |
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22 phases, |
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23 pycompat, |
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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 |
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31 def findcommonincoming(repo, remote, heads=None, force=False, ancestorsof=None): |
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32 """Return a tuple (common, anyincoming, heads) used to identify the common |
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33 subset of nodes between repo and remote. |
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34 |
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35 "common" is a list of (at least) the heads of the common subset. |
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36 "anyincoming" is testable as a boolean indicating if any nodes are missing |
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37 locally. If remote does not support getbundle, this actually is a list of |
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38 roots of the nodes that would be incoming, to be supplied to |
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39 changegroupsubset. No code except for pull should be relying on this fact |
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40 any longer. |
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41 "heads" is either the supplied heads, or else the remote's heads. |
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42 "ancestorsof" if not None, restrict the discovery to a subset defined by |
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43 these nodes. Changeset outside of this set won't be considered (but may |
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44 still appear in "common"). |
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45 |
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46 If you pass heads and they are all known locally, the response lists just |
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47 these heads in "common" and in "heads". |
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48 |
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49 Please use findcommonoutgoing to compute the set of outgoing nodes to give |
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50 extensions a good hook into outgoing. |
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51 """ |
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52 |
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53 if not remote.capable(b'getbundle'): |
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54 return treediscovery.findcommonincoming(repo, remote, heads, force) |
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55 |
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56 if heads: |
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57 knownnode = repo.changelog.hasnode # no nodemap until it is filtered |
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58 if all(knownnode(h) for h in heads): |
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59 return (heads, False, heads) |
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60 |
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61 res = setdiscovery.findcommonheads( |
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62 repo.ui, |
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63 repo, |
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64 remote, |
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65 abortwhenunrelated=not force, |
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66 ancestorsof=ancestorsof, |
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67 ) |
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68 common, anyinc, srvheads = res |
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69 if heads and not anyinc: |
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70 # server could be lying on the advertised heads |
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71 has_node = repo.changelog.hasnode |
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72 anyinc = any(not has_node(n) for n in heads) |
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73 return (list(common), anyinc, heads or list(srvheads)) |
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74 |
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75 |
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76 class outgoing(object): |
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77 """Represents the result of a findcommonoutgoing() call. |
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78 |
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79 Members: |
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80 |
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81 ancestorsof is a list of the nodes whose ancestors are included in the |
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82 outgoing operation. |
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83 |
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84 missing is a list of those ancestors of ancestorsof that are present in |
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85 local but not in remote. |
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86 |
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87 common is a set containing revs common between the local and the remote |
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88 repository (at least all of those that are ancestors of ancestorsof). |
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89 |
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90 commonheads is the list of heads of common. |
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91 |
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92 excluded is the list of missing changeset that shouldn't be sent |
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93 remotely. |
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94 |
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95 Some members are computed on demand from the heads, unless provided upfront |
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96 by discovery.""" |
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97 |
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98 def __init__( |
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99 self, repo, commonheads=None, ancestorsof=None, missingroots=None |
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100 ): |
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101 # at least one of them must not be set |
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102 assert None in (commonheads, missingroots) |
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103 cl = repo.changelog |
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104 if ancestorsof is None: |
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105 ancestorsof = cl.heads() |
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106 if missingroots: |
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107 discbases = [] |
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108 for n in missingroots: |
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109 discbases.extend([p for p in cl.parents(n) if p != repo.nullid]) |
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110 # TODO remove call to nodesbetween. |
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111 # TODO populate attributes on outgoing instance instead of setting |
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112 # discbases. |
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113 csets, roots, heads = cl.nodesbetween(missingroots, ancestorsof) |
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114 included = set(csets) |
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115 ancestorsof = heads |
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116 commonheads = [n for n in discbases if n not in included] |
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117 elif not commonheads: |
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118 commonheads = [repo.nullid] |
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119 self.commonheads = commonheads |
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120 self.ancestorsof = ancestorsof |
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121 self._revlog = cl |
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122 self._common = None |
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123 self._missing = None |
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124 self.excluded = [] |
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125 |
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126 def _computecommonmissing(self): |
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127 sets = self._revlog.findcommonmissing( |
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128 self.commonheads, self.ancestorsof |
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129 ) |
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130 self._common, self._missing = sets |
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131 |
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132 @util.propertycache |
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133 def common(self): |
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134 if self._common is None: |
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135 self._computecommonmissing() |
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136 return self._common |
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137 |
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138 @util.propertycache |
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139 def missing(self): |
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140 if self._missing is None: |
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141 self._computecommonmissing() |
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142 return self._missing |
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143 |
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144 |
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145 def findcommonoutgoing( |
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146 repo, other, onlyheads=None, force=False, commoninc=None, portable=False |
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147 ): |
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148 """Return an outgoing instance to identify the nodes present in repo but |
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149 not in other. |
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150 |
16683 | 151 If onlyheads is given, only nodes ancestral to nodes in onlyheads |
152 (inclusive) are included. If you already know the local repo's heads, | |
153 passing them in onlyheads is faster than letting them be recomputed here. | |
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154 |
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155 If commoninc is given, it must be the result of a prior call to |
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156 findcommonincoming(repo, other, force) to avoid recomputing it here. |
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157 |
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158 If portable is given, compute more conservative common and ancestorsof, |
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159 to make bundles created from the instance more portable.""" |
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160 # declare an empty outgoing object to be filled later |
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161 og = outgoing(repo, None, None) |
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162 |
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163 # get common set if not provided |
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164 if commoninc is None: |
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165 commoninc = findcommonincoming( |
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166 repo, other, force=force, ancestorsof=onlyheads |
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167 ) |
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168 og.commonheads, _any, _hds = commoninc |
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169 |
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170 # compute outgoing |
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171 mayexclude = repo._phasecache.phaseroots[phases.secret] or repo.obsstore |
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172 if not mayexclude: |
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173 og.ancestorsof = onlyheads or repo.heads() |
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174 elif onlyheads is None: |
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175 # use visible heads as it should be cached |
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176 og.ancestorsof = repo.filtered(b"served").heads() |
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177 og.excluded = [ctx.node() for ctx in repo.set(b'secret() or extinct()')] |
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178 else: |
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179 # compute common, missing and exclude secret stuff |
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180 sets = repo.changelog.findcommonmissing(og.commonheads, onlyheads) |
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181 og._common, allmissing = sets |
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182 og._missing = missing = [] |
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183 og.excluded = excluded = [] |
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184 for node in allmissing: |
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185 ctx = repo[node] |
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186 if ctx.phase() >= phases.secret or ctx.extinct(): |
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187 excluded.append(node) |
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188 else: |
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189 missing.append(node) |
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190 if len(missing) == len(allmissing): |
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191 ancestorsof = onlyheads |
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192 else: # update missing heads |
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193 ancestorsof = phases.newheads(repo, onlyheads, excluded) |
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194 og.ancestorsof = ancestorsof |
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195 if portable: |
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196 # recompute common and ancestorsof as if -r<rev> had been given for |
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197 # each head of missing, and --base <rev> for each head of the proper |
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198 # ancestors of missing |
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199 og._computecommonmissing() |
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200 cl = repo.changelog |
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201 missingrevs = {cl.rev(n) for n in og._missing} |
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202 og._common = set(cl.ancestors(missingrevs)) - missingrevs |
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203 commonheads = set(og.commonheads) |
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204 og.ancestorsof = [h for h in og.ancestorsof if h not in commonheads] |
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205 |
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206 return og |
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207 |
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208 |
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209 def _headssummary(pushop): |
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210 """compute a summary of branch and heads status before and after push |
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211 |
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212 return {'branch': ([remoteheads], [newheads], |
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213 [unsyncedheads], [discardedheads])} mapping |
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214 |
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215 - branch: the branch name, |
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216 - remoteheads: the list of remote heads known locally |
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217 None if the branch is new, |
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218 - newheads: the new remote heads (known locally) with outgoing pushed, |
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219 - unsyncedheads: the list of remote heads unknown locally, |
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220 - discardedheads: the list of heads made obsolete by the push. |
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221 """ |
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222 repo = pushop.repo.unfiltered() |
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223 remote = pushop.remote |
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224 outgoing = pushop.outgoing |
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225 cl = repo.changelog |
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226 headssum = {} |
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227 missingctx = set() |
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228 # A. Create set of branches involved in the push. |
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229 branches = set() |
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230 for n in outgoing.missing: |
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231 ctx = repo[n] |
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232 missingctx.add(ctx) |
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233 branches.add(ctx.branch()) |
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234 |
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235 with remote.commandexecutor() as e: |
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236 remotemap = e.callcommand(b'branchmap', {}).result() |
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237 |
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238 knownnode = cl.hasnode # do not use nodemap until it is filtered |
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239 # A. register remote heads of branches which are in outgoing set |
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240 for branch, heads in pycompat.iteritems(remotemap): |
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241 # don't add head info about branches which we don't have locally |
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242 if branch not in branches: |
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243 continue |
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244 known = [] |
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245 unsynced = [] |
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246 for h in heads: |
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247 if knownnode(h): |
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248 known.append(h) |
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249 else: |
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250 unsynced.append(h) |
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251 headssum[branch] = (known, list(known), unsynced) |
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252 |
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253 # B. add new branch data |
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254 for branch in branches: |
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255 if branch not in headssum: |
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256 headssum[branch] = (None, [], []) |
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257 |
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258 # C. Update newmap with outgoing changes. |
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259 # This will possibly add new heads and remove existing ones. |
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260 newmap = branchmap.remotebranchcache( |
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261 repo, |
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262 ( |
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263 (branch, heads[1]) |
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264 for branch, heads in pycompat.iteritems(headssum) |
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265 if heads[0] is not None |
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266 ), |
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267 ) |
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268 newmap.update(repo, (ctx.rev() for ctx in missingctx)) |
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269 for branch, newheads in pycompat.iteritems(newmap): |
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270 headssum[branch][1][:] = newheads |
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271 for branch, items in pycompat.iteritems(headssum): |
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272 for l in items: |
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273 if l is not None: |
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274 l.sort() |
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275 headssum[branch] = items + ([],) |
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276 |
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277 # If there are no obsstore, no post processing are needed. |
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278 if repo.obsstore: |
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279 torev = repo.changelog.rev |
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280 futureheads = {torev(h) for h in outgoing.ancestorsof} |
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281 futureheads |= {torev(h) for h in outgoing.commonheads} |
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282 allfuturecommon = repo.changelog.ancestors(futureheads, inclusive=True) |
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283 for branch, heads in sorted(pycompat.iteritems(headssum)): |
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284 remoteheads, newheads, unsyncedheads, placeholder = heads |
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285 result = _postprocessobsolete(pushop, allfuturecommon, newheads) |
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286 headssum[branch] = ( |
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287 remoteheads, |
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288 sorted(result[0]), |
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289 unsyncedheads, |
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290 sorted(result[1]), |
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291 ) |
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292 return headssum |
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293 |
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294 |
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295 def _oldheadssummary(repo, remoteheads, outgoing, inc=False): |
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296 """Compute branchmapsummary for repo without branchmap support""" |
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297 |
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298 # 1-4b. old servers: Check for new topological heads. |
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299 # Construct {old,new}map with branch = None (topological branch). |
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300 # (code based on update) |
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301 knownnode = repo.changelog.hasnode # no nodemap until it is filtered |
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302 oldheads = sorted(h for h in remoteheads if knownnode(h)) |
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303 # all nodes in outgoing.missing are children of either: |
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304 # - an element of oldheads |
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305 # - another element of outgoing.missing |
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306 # - nullrev |
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307 # This explains why the new head are very simple to compute. |
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308 r = repo.set(b'heads(%ln + %ln)', oldheads, outgoing.missing) |
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309 newheads = sorted(c.node() for c in r) |
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310 # set some unsynced head to issue the "unsynced changes" warning |
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311 if inc: |
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312 unsynced = [None] |
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313 else: |
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314 unsynced = [] |
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315 return {None: (oldheads, newheads, unsynced, [])} |
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316 |
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317 |
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318 def _nowarnheads(pushop): |
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319 # Compute newly pushed bookmarks. We don't warn about bookmarked heads. |
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320 repo = pushop.repo.unfiltered() |
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321 remote = pushop.remote |
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322 localbookmarks = repo._bookmarks |
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323 |
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324 with remote.commandexecutor() as e: |
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325 remotebookmarks = e.callcommand( |
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326 b'listkeys', |
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327 { |
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328 b'namespace': b'bookmarks', |
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329 }, |
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330 ).result() |
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331 |
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332 bookmarkedheads = set() |
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333 |
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334 # internal config: bookmarks.pushing |
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335 newbookmarks = [ |
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336 localbookmarks.expandname(b) |
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337 for b in pushop.ui.configlist(b'bookmarks', b'pushing') |
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338 ] |
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339 |
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340 for bm in localbookmarks: |
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341 rnode = remotebookmarks.get(bm) |
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342 if rnode and rnode in repo: |
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bookmarks: remove changectx() method from bmstore (API)
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parents:
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343 lctx, rctx = repo[localbookmarks[bm]], repo[rnode] |
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344 if bookmarks.validdest(repo, rctx, lctx): |
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345 bookmarkedheads.add(lctx.node()) |
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346 else: |
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347 if bm in newbookmarks and bm not in remotebookmarks: |
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discovery: look up bookmarks only among bookmarks
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348 bookmarkedheads.add(localbookmarks[bm]) |
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349 |
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350 return bookmarkedheads |
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351 |
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352 |
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353 def checkheads(pushop): |
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354 """Check that a push won't add any outgoing head |
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355 |
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errors: raise StateError when push fails because it creates new heads
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356 raise StateError error and display ui message as needed. |
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357 """ |
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358 |
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359 repo = pushop.repo.unfiltered() |
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360 remote = pushop.remote |
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361 outgoing = pushop.outgoing |
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362 remoteheads = pushop.remoteheads |
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363 newbranch = pushop.newbranch |
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364 inc = bool(pushop.incoming) |
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|
365 |
17209
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366 # Check for each named branch if we're creating new remote heads. |
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367 # To be a remote head after push, node must be either: |
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368 # - unknown locally |
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369 # - a local outgoing head descended from update |
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370 # - a remote head that's known locally and not |
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|
371 # ancestral to an outgoing head |
47012
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Joerg Sonnenberger <joerg@bec.de>
parents:
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372 if remoteheads == [repo.nullid]: |
15932
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373 # remote is empty, nothing to check. |
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|
374 return |
2439
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extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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|
375 |
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376 if remote.capable(b'branchmap'): |
32706
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|
377 headssum = _headssummary(pushop) |
17209
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|
378 else: |
17211
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parents:
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diff
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|
379 headssum = _oldheadssummary(repo, remoteheads, outgoing, inc) |
32709
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push: add a way to allow concurrent pushes on unrelated heads
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|
380 pushop.pushbranchmap = headssum |
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381 newbranches = [ |
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|
382 branch |
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383 for branch, heads in pycompat.iteritems(headssum) |
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384 if heads[0] is None |
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|
385 ] |
17209
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|
386 # 1. Check for new branches on the remote. |
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|
387 if newbranches and not newbranch: # new branch requires --new-branch |
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|
388 branchnames = b', '.join(sorted(newbranches)) |
42216
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|
389 # Calculate how many of the new branches are closed branches |
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|
390 closedbranches = set() |
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|
391 for tag, heads, tip, isclosed in repo.branchmap().iterbranches(): |
d0e773ad9077
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|
392 if isclosed: |
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|
393 closedbranches.add(tag) |
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|
394 closedbranches = closedbranches & set(newbranches) |
42203
5997eabc7b85
push: added clear warning message when pushing closed branches(issue6080)
Taapas Agrawal <taapas2897@gmail.com>
parents:
42029
diff
changeset
|
395 if closedbranches: |
45908
122f0b59f5f0
errors: remove trailing "!" in messages about creating new heads on push
Martin von Zweigbergk <martinvonz@google.com>
parents:
45144
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|
396 errmsg = _(b"push creates new remote branches: %s (%d closed)") % ( |
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|
397 branchnames, |
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|
398 len(closedbranches), |
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changeset
|
399 ) |
42203
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Taapas Agrawal <taapas2897@gmail.com>
parents:
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changeset
|
400 else: |
45908
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errors: remove trailing "!" in messages about creating new heads on push
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|
401 errmsg = _(b"push creates new remote branches: %s") % branchnames |
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|
402 hint = _(b"use 'hg push --new-branch' to create new remote branches") |
46119
9261f6c1d39b
errors: raise StateError when push fails because it creates new heads
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parents:
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changeset
|
403 raise error.StateError(errmsg, hint=hint) |
1466
b6d9ea0bc107
Added a lot of comments to changegroupsubset.
Eric Hopper <hopper@omnifarious.org>
parents:
1464
diff
changeset
|
404 |
26862
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|
405 # 2. Find heads that we need not warn about |
26936
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discovery: pass pushop to _nowarnheads
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parents:
26935
diff
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|
406 nowarnheads = _nowarnheads(pushop) |
17212
246131d670c2
checkheads: extract bookmark computation from the branch loop
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents:
17211
diff
changeset
|
407 |
246131d670c2
checkheads: extract bookmark computation from the branch loop
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents:
17211
diff
changeset
|
408 # 3. Check for new heads. |
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|
409 # If there are more heads after the push than before, a suitable |
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changeset
|
410 # error message, depending on unsynced status, is displayed. |
26585
b38d93735a4f
discovery: rename 'error' to 'errormsg'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25944
diff
changeset
|
411 errormsg = None |
43106
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
412 for branch, heads in sorted(pycompat.iteritems(headssum)): |
32708
90cb4ec8df64
headsummary: expose the 'discardedheads' set in the headssummary
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
32707
diff
changeset
|
413 remoteheads, newheads, unsyncedheads, discardedheads = heads |
17214
738ad56dd8a6
checkheads: take future obsoleted heads into account
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parents:
17212
diff
changeset
|
414 # add unsynced data |
20381
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discovery: cleanup of variable names and comments
Mads Kiilerich <madski@unity3d.com>
parents:
20225
diff
changeset
|
415 if remoteheads is None: |
19840
b00ba31313c3
discovery: abort also when pushing multiple headed new branch
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18382
diff
changeset
|
416 oldhs = set() |
b00ba31313c3
discovery: abort also when pushing multiple headed new branch
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parents:
18382
diff
changeset
|
417 else: |
20381
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changeset
|
418 oldhs = set(remoteheads) |
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|
419 oldhs.update(unsyncedheads) |
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420 dhs = None # delta heads, the new heads on branch |
32675
fc9296c15112
checkheads: simplify the code around obsolescence post-processing
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parents:
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changeset
|
421 newhs = set(newheads) |
32673
bd966b9f3274
checkheads: clarify that we no longer touch the head unknown locally
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
32672
diff
changeset
|
422 newhs.update(unsyncedheads) |
32674
7a7c4f3afb98
checkheads: drop now unused filtering of 'unsyncedheads'
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changeset
|
423 if unsyncedheads: |
7a7c4f3afb98
checkheads: drop now unused filtering of 'unsyncedheads'
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changeset
|
424 if None in unsyncedheads: |
22178
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|
425 # old remote, no heads data |
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|
426 heads = None |
21198
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discovery: don't report all "unsynced" remote heads (issue4230)
Mads Kiilerich <madski@unity3d.com>
parents:
20502
diff
changeset
|
427 else: |
35184
bc775b8cc020
scmutil: extra utility to display a reasonable amount of nodes
Boris Feld <boris.feld@octobus.net>
parents:
32792
diff
changeset
|
428 heads = scmutil.nodesummaries(repo, unsyncedheads) |
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|
429 if heads is None: |
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changeset
|
430 repo.ui.status( |
43117
8ff1ecfadcd1
cleanup: join string literals that are already on one line
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|
431 _(b"remote has heads that are not known locally\n") |
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|
432 ) |
22178
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|
433 elif branch is None: |
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|
434 repo.ui.status( |
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|
435 _(b"remote has heads that are not known locally: %s\n") |
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|
436 % heads |
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changeset
|
437 ) |
20501
8a9e0b523d2d
discovery: improve "note: unsynced remote changes!" warning
Mads Kiilerich <madski@unity3d.com>
parents:
20403
diff
changeset
|
438 else: |
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|
439 repo.ui.status( |
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|
440 _( |
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changeset
|
441 b"remote has heads on branch '%s' that are " |
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442 b"not known locally: %s\n" |
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443 ) |
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444 % (branch, heads) |
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445 ) |
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446 if remoteheads is None: |
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447 if len(newhs) > 1: |
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448 dhs = list(newhs) |
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449 if errormsg is None: |
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450 errormsg = ( |
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451 _(b"push creates new branch '%s' with multiple heads") |
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452 % branch |
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453 ) |
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454 hint = _( |
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455 b"merge or" |
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456 b" see 'hg help push' for details about" |
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457 b" pushing new heads" |
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458 ) |
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459 elif len(newhs) > len(oldhs): |
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460 # remove bookmarked or existing remote heads from the new heads list |
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461 dhs = sorted(newhs - nowarnheads - oldhs) |
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462 if dhs: |
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463 if errormsg is None: |
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464 if branch not in (b'default', None): |
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465 errormsg = _( |
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466 b"push creates new remote head %s on branch '%s'" |
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467 ) % ( |
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468 short(dhs[0]), |
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469 branch, |
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470 ) |
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471 elif repo[dhs[0]].bookmarks(): |
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472 errormsg = _( |
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473 b"push creates new remote head %s " |
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474 b"with bookmark '%s'" |
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475 ) % (short(dhs[0]), repo[dhs[0]].bookmarks()[0]) |
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476 else: |
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477 errormsg = _(b"push creates new remote head %s") % short( |
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478 dhs[0] |
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479 ) |
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480 if unsyncedheads: |
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481 hint = _( |
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482 b"pull and merge or" |
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483 b" see 'hg help push' for details about" |
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484 b" pushing new heads" |
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485 ) |
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486 else: |
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487 hint = _( |
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488 b"merge or" |
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489 b" see 'hg help push' for details about" |
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490 b" pushing new heads" |
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491 ) |
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492 if branch is None: |
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493 repo.ui.note(_(b"new remote heads:\n")) |
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494 else: |
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495 repo.ui.note(_(b"new remote heads on branch '%s':\n") % branch) |
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496 for h in dhs: |
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497 repo.ui.note(b" %s\n" % short(h)) |
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498 if errormsg: |
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499 raise error.StateError(errormsg, hint=hint) |
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500 |
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501 |
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502 def _postprocessobsolete(pushop, futurecommon, candidate_newhs): |
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503 """post process the list of new heads with obsolescence information |
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504 |
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505 Exists as a sub-function to contain the complexity and allow extensions to |
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506 experiment with smarter logic. |
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507 |
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508 Returns (newheads, discarded_heads) tuple |
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509 """ |
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510 # known issue |
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511 # |
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512 # * We "silently" skip processing on all changeset unknown locally |
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513 # |
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514 # * if <nh> is public on the remote, it won't be affected by obsolete |
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515 # marker and a new is created |
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516 |
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517 # define various utilities and containers |
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518 repo = pushop.repo |
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519 unfi = repo.unfiltered() |
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520 torev = unfi.changelog.index.get_rev |
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521 public = phases.public |
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522 getphase = unfi._phasecache.phase |
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523 ispublic = lambda r: getphase(unfi, r) == public |
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524 ispushed = lambda n: torev(n) in futurecommon |
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525 hasoutmarker = functools.partial(pushingmarkerfor, unfi.obsstore, ispushed) |
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526 successorsmarkers = unfi.obsstore.successors |
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527 newhs = set() # final set of new heads |
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528 discarded = set() # new head of fully replaced branch |
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529 |
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530 localcandidate = set() # candidate heads known locally |
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531 unknownheads = set() # candidate heads unknown locally |
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532 for h in candidate_newhs: |
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533 if h in unfi: |
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534 localcandidate.add(h) |
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535 else: |
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536 if successorsmarkers.get(h) is not None: |
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537 msg = ( |
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538 b'checkheads: remote head unknown locally has' |
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539 b' local marker: %s\n' |
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540 ) |
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541 repo.ui.debug(msg % hex(h)) |
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542 unknownheads.add(h) |
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543 |
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544 # fast path the simple case |
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545 if len(localcandidate) == 1: |
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546 return unknownheads | set(candidate_newhs), set() |
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547 |
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548 # actually process branch replacement |
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549 while localcandidate: |
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550 nh = localcandidate.pop() |
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551 current_branch = unfi[nh].branch() |
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552 # run this check early to skip the evaluation of the whole branch |
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553 if torev(nh) in futurecommon or ispublic(torev(nh)): |
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554 newhs.add(nh) |
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555 continue |
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556 |
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557 # Get all revs/nodes on the branch exclusive to this head |
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558 # (already filtered heads are "ignored")) |
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559 branchrevs = unfi.revs( |
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560 b'only(%n, (%ln+%ln))', nh, localcandidate, newhs |
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561 ) |
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562 |
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563 branchnodes = [] |
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564 for r in branchrevs: |
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565 c = unfi[r] |
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566 if c.branch() == current_branch: |
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567 branchnodes.append(c.node()) |
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568 |
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569 # The branch won't be hidden on the remote if |
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570 # * any part of it is public, |
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571 # * any part of it is considered part of the result by previous logic, |
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572 # * if we have no markers to push to obsolete it. |
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573 if ( |
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574 any(ispublic(r) for r in branchrevs) |
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575 or any(torev(n) in futurecommon for n in branchnodes) |
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576 or any(not hasoutmarker(n) for n in branchnodes) |
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577 ): |
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578 newhs.add(nh) |
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579 else: |
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580 # note: there is a corner case if there is a merge in the branch. |
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581 # we might end up with -more- heads. However, these heads are not |
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582 # "added" by the push, but more by the "removal" on the remote so I |
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583 # think is a okay to ignore them, |
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584 discarded.add(nh) |
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585 newhs |= unknownheads |
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586 return newhs, discarded |
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587 |
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588 |
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589 def pushingmarkerfor(obsstore, ispushed, node): |
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590 """true if some markers are to be pushed for node |
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591 |
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592 We cannot just look in to the pushed obsmarkers from the pushop because |
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593 discovery might have filtered relevant markers. In addition listing all |
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594 markers relevant to all changesets in the pushed set would be too expensive |
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595 (O(len(repo))) |
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596 |
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597 (note: There are cache opportunity in this function. but it would requires |
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598 a two dimensional stack.) |
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599 """ |
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600 successorsmarkers = obsstore.successors |
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601 stack = [node] |
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602 seen = set(stack) |
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603 while stack: |
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604 current = stack.pop() |
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605 if ispushed(current): |
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606 return True |
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607 markers = successorsmarkers.get(current, ()) |
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608 # markers fields = ('prec', 'succs', 'flag', 'meta', 'date', 'parents') |
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609 for m in markers: |
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610 nexts = m[1] # successors |
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611 if not nexts: # this is a prune marker |
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612 nexts = m[5] or () # parents |
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613 for n in nexts: |
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614 if n not in seen: |
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615 seen.add(n) |
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616 stack.append(n) |
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617 return False |