Mercurial > hg
annotate mercurial/phases.py @ 47072:4c041c71ec01
revlog: introduce an explicit tracking of what the revlog is about
Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.
In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.
So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.
The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.
Differential Revision: https://phab.mercurial-scm.org/D10352
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 06 Apr 2021 05:20:24 +0200 |
parents | d55b71393907 |
children | 6000f5b25c9b |
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1 """ Mercurial phases support code |
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2 |
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3 --- |
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4 |
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5 Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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6 Logilab SA <contact@logilab.fr> |
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7 Augie Fackler <durin42@gmail.com> |
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9 This software may be used and distributed according to the terms |
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10 of the GNU General Public License version 2 or any later version. |
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11 |
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12 --- |
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14 This module implements most phase logic in mercurial. |
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16 |
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17 Basic Concept |
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18 ============= |
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19 |
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20 A 'changeset phase' is an indicator that tells us how a changeset is |
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21 manipulated and communicated. The details of each phase is described |
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22 below, here we describe the properties they have in common. |
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23 |
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24 Like bookmarks, phases are not stored in history and thus are not |
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25 permanent and leave no audit trail. |
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26 |
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27 First, no changeset can be in two phases at once. Phases are ordered, |
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28 so they can be considered from lowest to highest. The default, lowest |
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29 phase is 'public' - this is the normal phase of existing changesets. A |
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30 child changeset can not be in a lower phase than its parents. |
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31 |
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32 These phases share a hierarchy of traits: |
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33 |
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34 immutable shared |
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35 public: X X |
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36 draft: X |
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37 secret: |
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38 |
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39 Local commits are draft by default. |
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40 |
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41 Phase Movement and Exchange |
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42 =========================== |
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44 Phase data is exchanged by pushkey on pull and push. Some servers have |
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45 a publish option set, we call such a server a "publishing server". |
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46 Pushing a draft changeset to a publishing server changes the phase to |
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47 public. |
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48 |
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49 A small list of fact/rules define the exchange of phase: |
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50 |
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51 * old client never changes server states |
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52 * pull never changes server states |
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53 * publish and old server changesets are seen as public by client |
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54 * any secret changeset seen in another repository is lowered to at |
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55 least draft |
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56 |
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57 Here is the final table summing up the 49 possible use cases of phase |
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58 exchange: |
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59 |
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60 server |
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61 old publish non-publish |
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62 N X N D P N D P |
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63 old client |
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64 pull |
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65 N - X/X - X/D X/P - X/D X/P |
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66 X - X/X - X/D X/P - X/D X/P |
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67 push |
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68 X X/X X/X X/P X/P X/P X/D X/D X/P |
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69 new client |
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70 pull |
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71 N - P/X - P/D P/P - D/D P/P |
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72 D - P/X - P/D P/P - D/D P/P |
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73 P - P/X - P/D P/P - P/D P/P |
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74 push |
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75 D P/X P/X P/P P/P P/P D/D D/D P/P |
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76 P P/X P/X P/P P/P P/P P/P P/P P/P |
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77 |
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78 Legend: |
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79 |
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80 A/B = final state on client / state on server |
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81 |
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82 * N = new/not present, |
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83 * P = public, |
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84 * D = draft, |
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85 * X = not tracked (i.e., the old client or server has no internal |
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86 way of recording the phase.) |
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87 |
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88 passive = only pushes |
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89 |
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90 |
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91 A cell here can be read like this: |
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92 |
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93 "When a new client pushes a draft changeset (D) to a publishing |
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94 server where it's not present (N), it's marked public on both |
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95 sides (P/P)." |
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96 |
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97 Note: old client behave as a publishing server with draft only content |
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98 - other people see it as public |
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99 - content is pushed as draft |
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100 |
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101 """ |
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102 |
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103 from __future__ import absolute_import |
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104 |
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105 import errno |
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106 import struct |
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107 |
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108 from .i18n import _ |
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109 from .node import ( |
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110 bin, |
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111 hex, |
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112 nullrev, |
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113 short, |
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114 wdirrev, |
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115 ) |
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116 from .pycompat import ( |
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117 getattr, |
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118 setattr, |
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119 ) |
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120 from . import ( |
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121 error, |
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122 pycompat, |
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123 requirements, |
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124 smartset, |
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125 txnutil, |
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126 util, |
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127 ) |
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128 |
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129 if pycompat.TYPE_CHECKING: |
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130 from typing import ( |
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131 Any, |
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132 Callable, |
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133 Dict, |
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134 Iterable, |
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135 List, |
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136 Optional, |
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137 Set, |
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138 Tuple, |
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139 ) |
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140 from . import ( |
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141 localrepo, |
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142 ui as uimod, |
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143 ) |
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144 |
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145 Phaseroots = Dict[int, Set[bytes]] |
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146 Phasedefaults = List[ |
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147 Callable[[localrepo.localrepository, Phaseroots], Phaseroots] |
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148 ] |
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149 |
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150 |
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151 _fphasesentry = struct.Struct(b'>i20s') |
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152 |
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153 # record phase index |
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154 public, draft, secret = range(3) # type: int |
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155 archived = 32 # non-continuous for compatibility |
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156 internal = 96 # non-continuous for compatibility |
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157 allphases = (public, draft, secret, archived, internal) |
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158 trackedphases = (draft, secret, archived, internal) |
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159 # record phase names |
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160 cmdphasenames = [b'public', b'draft', b'secret'] # known to `hg phase` command |
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161 phasenames = dict(enumerate(cmdphasenames)) |
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162 phasenames[archived] = b'archived' |
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163 phasenames[internal] = b'internal' |
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164 # map phase name to phase number |
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165 phasenumber = {name: phase for phase, name in phasenames.items()} |
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166 # like phasenumber, but also include maps for the numeric and binary |
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167 # phase number to the phase number |
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168 phasenumber2 = phasenumber.copy() |
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169 phasenumber2.update({phase: phase for phase in phasenames}) |
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170 phasenumber2.update({b'%i' % phase: phase for phase in phasenames}) |
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171 # record phase property |
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172 mutablephases = (draft, secret, archived, internal) |
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173 remotehiddenphases = (secret, archived, internal) |
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174 localhiddenphases = (internal, archived) |
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175 |
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176 |
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177 def supportinternal(repo): |
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178 # type: (localrepo.localrepository) -> bool |
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179 """True if the internal phase can be used on a repository""" |
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180 return requirements.INTERNAL_PHASE_REQUIREMENT in repo.requirements |
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181 |
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182 |
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183 def _readroots(repo, phasedefaults=None): |
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184 # type: (localrepo.localrepository, Optional[Phasedefaults]) -> Tuple[Phaseroots, bool] |
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185 """Read phase roots from disk |
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186 |
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187 phasedefaults is a list of fn(repo, roots) callable, which are |
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188 executed if the phase roots file does not exist. When phases are |
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189 being initialized on an existing repository, this could be used to |
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190 set selected changesets phase to something else than public. |
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191 |
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192 Return (roots, dirty) where dirty is true if roots differ from |
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193 what is being stored. |
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194 """ |
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195 repo = repo.unfiltered() |
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196 dirty = False |
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197 roots = {i: set() for i in allphases} |
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198 try: |
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199 f, pending = txnutil.trypending(repo.root, repo.svfs, b'phaseroots') |
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200 try: |
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201 for line in f: |
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202 phase, nh = line.split() |
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203 roots[int(phase)].add(bin(nh)) |
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204 finally: |
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205 f.close() |
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206 except IOError as inst: |
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207 if inst.errno != errno.ENOENT: |
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208 raise |
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209 if phasedefaults: |
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210 for f in phasedefaults: |
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211 roots = f(repo, roots) |
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212 dirty = True |
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213 return roots, dirty |
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214 |
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215 |
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216 def binaryencode(phasemapping): |
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217 # type: (Dict[int, List[bytes]]) -> bytes |
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218 """encode a 'phase -> nodes' mapping into a binary stream |
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219 |
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220 The revision lists are encoded as (phase, root) pairs. |
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221 """ |
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222 binarydata = [] |
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223 for phase, nodes in pycompat.iteritems(phasemapping): |
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224 for head in nodes: |
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225 binarydata.append(_fphasesentry.pack(phase, head)) |
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226 return b''.join(binarydata) |
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227 |
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228 |
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229 def binarydecode(stream): |
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230 # type: (...) -> Dict[int, List[bytes]] |
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231 """decode a binary stream into a 'phase -> nodes' mapping |
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232 |
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233 The (phase, root) pairs are turned back into a dictionary with |
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234 the phase as index and the aggregated roots of that phase as value.""" |
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235 headsbyphase = {i: [] for i in allphases} |
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236 entrysize = _fphasesentry.size |
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237 while True: |
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238 entry = stream.read(entrysize) |
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239 if len(entry) < entrysize: |
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240 if entry: |
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241 raise error.Abort(_(b'bad phase-heads stream')) |
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242 break |
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243 phase, node = _fphasesentry.unpack(entry) |
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244 headsbyphase[phase].append(node) |
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245 return headsbyphase |
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246 |
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247 |
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248 def _sortedrange_insert(data, idx, rev, t): |
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249 merge_before = False |
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250 if idx: |
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251 r1, t1 = data[idx - 1] |
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252 merge_before = r1[-1] + 1 == rev and t1 == t |
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253 merge_after = False |
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254 if idx < len(data): |
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255 r2, t2 = data[idx] |
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256 merge_after = r2[0] == rev + 1 and t2 == t |
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257 |
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258 if merge_before and merge_after: |
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259 data[idx - 1] = (pycompat.xrange(r1[0], r2[-1] + 1), t) |
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260 data.pop(idx) |
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261 elif merge_before: |
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262 data[idx - 1] = (pycompat.xrange(r1[0], rev + 1), t) |
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263 elif merge_after: |
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264 data[idx] = (pycompat.xrange(rev, r2[-1] + 1), t) |
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265 else: |
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266 data.insert(idx, (pycompat.xrange(rev, rev + 1), t)) |
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267 |
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268 |
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269 def _sortedrange_split(data, idx, rev, t): |
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270 r1, t1 = data[idx] |
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271 if t == t1: |
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272 return |
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273 t = (t1[0], t[1]) |
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274 if len(r1) == 1: |
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275 data.pop(idx) |
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276 _sortedrange_insert(data, idx, rev, t) |
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277 elif r1[0] == rev: |
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278 data[idx] = (pycompat.xrange(rev + 1, r1[-1] + 1), t1) |
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279 _sortedrange_insert(data, idx, rev, t) |
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280 elif r1[-1] == rev: |
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281 data[idx] = (pycompat.xrange(r1[0], rev), t1) |
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282 _sortedrange_insert(data, idx + 1, rev, t) |
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283 else: |
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284 data[idx : idx + 1] = [ |
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285 (pycompat.xrange(r1[0], rev), t1), |
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286 (pycompat.xrange(rev, rev + 1), t), |
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287 (pycompat.xrange(rev + 1, r1[-1] + 1), t1), |
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288 ] |
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289 |
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290 |
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291 def _trackphasechange(data, rev, old, new): |
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292 """add a phase move to the <data> list of ranges |
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293 |
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294 If data is None, nothing happens. |
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295 """ |
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296 if data is None: |
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297 return |
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298 |
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299 # If data is empty, create a one-revision range and done |
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300 if not data: |
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301 data.insert(0, (pycompat.xrange(rev, rev + 1), (old, new))) |
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302 return |
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303 |
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304 low = 0 |
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305 high = len(data) |
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306 t = (old, new) |
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307 while low < high: |
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308 mid = (low + high) // 2 |
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309 revs = data[mid][0] |
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310 revs_low = revs[0] |
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311 revs_high = revs[-1] |
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312 |
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313 if rev >= revs_low and rev <= revs_high: |
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314 _sortedrange_split(data, mid, rev, t) |
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315 return |
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316 |
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317 if revs_low == rev + 1: |
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318 if mid and data[mid - 1][0][-1] == rev: |
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319 _sortedrange_split(data, mid - 1, rev, t) |
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320 else: |
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321 _sortedrange_insert(data, mid, rev, t) |
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322 return |
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323 |
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324 if revs_high == rev - 1: |
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325 if mid + 1 < len(data) and data[mid + 1][0][0] == rev: |
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326 _sortedrange_split(data, mid + 1, rev, t) |
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327 else: |
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328 _sortedrange_insert(data, mid + 1, rev, t) |
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329 return |
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330 |
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331 if revs_low > rev: |
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332 high = mid |
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333 else: |
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334 low = mid + 1 |
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335 |
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336 if low == len(data): |
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337 data.append((pycompat.xrange(rev, rev + 1), t)) |
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338 return |
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339 |
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340 r1, t1 = data[low] |
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341 if r1[0] > rev: |
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342 data.insert(low, (pycompat.xrange(rev, rev + 1), t)) |
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343 else: |
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344 data.insert(low + 1, (pycompat.xrange(rev, rev + 1), t)) |
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345 |
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346 |
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347 class phasecache(object): |
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348 def __init__(self, repo, phasedefaults, _load=True): |
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349 # type: (localrepo.localrepository, Optional[Phasedefaults], bool) -> None |
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350 if _load: |
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351 # Cheap trick to allow shallow-copy without copy module |
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352 self.phaseroots, self.dirty = _readroots(repo, phasedefaults) |
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353 self._loadedrevslen = 0 |
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354 self._phasesets = None |
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355 self.filterunknown(repo) |
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356 self.opener = repo.svfs |
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357 |
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358 def hasnonpublicphases(self, repo): |
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359 # type: (localrepo.localrepository) -> bool |
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360 """detect if there are revisions with non-public phase""" |
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361 repo = repo.unfiltered() |
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362 cl = repo.changelog |
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363 if len(cl) >= self._loadedrevslen: |
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364 self.invalidate() |
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365 self.loadphaserevs(repo) |
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366 return any( |
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367 revs |
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368 for phase, revs in pycompat.iteritems(self.phaseroots) |
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369 if phase != public |
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370 ) |
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371 |
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372 def nonpublicphaseroots(self, repo): |
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373 # type: (localrepo.localrepository) -> Set[bytes] |
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374 """returns the roots of all non-public phases |
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375 |
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376 The roots are not minimized, so if the secret revisions are |
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377 descendants of draft revisions, their roots will still be present. |
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378 """ |
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379 repo = repo.unfiltered() |
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380 cl = repo.changelog |
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381 if len(cl) >= self._loadedrevslen: |
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382 self.invalidate() |
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383 self.loadphaserevs(repo) |
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384 return set().union( |
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385 *[ |
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386 revs |
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387 for phase, revs in pycompat.iteritems(self.phaseroots) |
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388 if phase != public |
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389 ] |
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390 ) |
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391 |
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392 def getrevset(self, repo, phases, subset=None): |
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393 # type: (localrepo.localrepository, Iterable[int], Optional[Any]) -> Any |
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394 # TODO: finish typing this |
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395 """return a smartset for the given phases""" |
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396 self.loadphaserevs(repo) # ensure phase's sets are loaded |
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397 phases = set(phases) |
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398 publicphase = public in phases |
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399 |
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400 if publicphase: |
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401 # In this case, phases keeps all the *other* phases. |
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402 phases = set(allphases).difference(phases) |
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403 if not phases: |
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404 return smartset.fullreposet(repo) |
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405 |
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406 # fast path: _phasesets contains the interesting sets, |
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407 # might only need a union and post-filtering. |
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408 revsneedscopy = False |
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409 if len(phases) == 1: |
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410 [p] = phases |
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411 revs = self._phasesets[p] |
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412 revsneedscopy = True # Don't modify _phasesets |
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413 else: |
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414 # revs has the revisions in all *other* phases. |
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415 revs = set.union(*[self._phasesets[p] for p in phases]) |
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416 |
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417 def _addwdir(wdirsubset, wdirrevs): |
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418 if wdirrev in wdirsubset and repo[None].phase() in phases: |
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419 if revsneedscopy: |
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420 wdirrevs = wdirrevs.copy() |
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421 # The working dir would never be in the # cache, but it was in |
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422 # the subset being filtered for its phase (or filtered out, |
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423 # depending on publicphase), so add it to the output to be |
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424 # included (or filtered out). |
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425 wdirrevs.add(wdirrev) |
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426 return wdirrevs |
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427 |
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428 if not publicphase: |
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429 if repo.changelog.filteredrevs: |
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430 revs = revs - repo.changelog.filteredrevs |
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431 |
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432 if subset is None: |
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433 return smartset.baseset(revs) |
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434 else: |
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435 revs = _addwdir(subset, revs) |
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436 return subset & smartset.baseset(revs) |
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437 else: |
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438 if subset is None: |
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439 subset = smartset.fullreposet(repo) |
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440 |
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441 revs = _addwdir(subset, revs) |
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442 |
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443 if not revs: |
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444 return subset |
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445 return subset.filter(lambda r: r not in revs) |
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446 |
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|
447 def copy(self): |
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448 # Shallow copy meant to ensure isolation in |
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|
449 # advance/retractboundary(), nothing more. |
23631
b8260abfeb7d
bundlerepo: implement safe phasecache
Eric Sumner <ericsumner@fb.com>
parents:
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diff
changeset
|
450 ph = self.__class__(None, None, _load=False) |
45131
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|
451 ph.phaseroots = self.phaseroots.copy() |
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|
452 ph.dirty = self.dirty |
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|
453 ph.opener = self.opener |
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phases: rename _phasemaxrev to _loadedrevslen to clarify it isn't max value
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
454 ph._loadedrevslen = self._loadedrevslen |
25592
dd2349ccfa66
phase: also copy phase's sets when copying phase cache
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25527
diff
changeset
|
455 ph._phasesets = self._phasesets |
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|
456 return ph |
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changeset
|
457 |
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|
458 def replace(self, phcache): |
25613
a13c18c14ade
phase: document the replace method
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changeset
|
459 """replace all values in 'self' with content of phcache""" |
43076
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|
460 for a in ( |
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461 b'phaseroots', |
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462 b'dirty', |
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463 b'opener', |
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464 b'_loadedrevslen', |
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465 b'_phasesets', |
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466 ): |
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|
467 setattr(self, a, getattr(phcache, a)) |
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468 |
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Laurent Charignon <lcharignon@fb.com>
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diff
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|
469 def _getphaserevsnative(self, repo): |
24444
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470 repo = repo.unfiltered() |
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471 return repo.changelog.computephases(self.phaseroots) |
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|
472 |
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473 def _computephaserevspure(self, repo): |
24519
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phases: move pure phase computation in a function
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474 repo = repo.unfiltered() |
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phases: drop the list with phase of each rev, always comput phase sets
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|
475 cl = repo.changelog |
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476 self._phasesets = {phase: set() for phase in allphases} |
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phase: use `trackedphases` in `_getphaserevsnative`
Boris Feld <boris.feld@octobus.net>
parents:
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diff
changeset
|
477 lowerroots = set() |
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|
478 for phase in reversed(trackedphases): |
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479 roots = pycompat.maplist(cl.rev, self.phaseroots[phase]) |
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480 if roots: |
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481 ps = set(cl.descendants(roots)) |
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482 for root in roots: |
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|
483 ps.add(root) |
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|
484 ps.difference_update(lowerroots) |
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changeset
|
485 lowerroots.update(ps) |
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changeset
|
486 self._phasesets[phase] = ps |
35441
98cc121099fe
phases: rename _phasemaxrev to _loadedrevslen to clarify it isn't max value
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changeset
|
487 self._loadedrevslen = len(cl) |
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Laurent Charignon <lcharignon@fb.com>
parents:
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diff
changeset
|
488 |
25611
d89045a66e01
phase: rename getphaserevs to loadphaserevs
Pierre-Yves David <pierre-yves.david@fb.com>
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diff
changeset
|
489 def loadphaserevs(self, repo): |
46644
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typing: add some type annotations to mercurial/phases.py
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parents:
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|
490 # type: (localrepo.localrepository) -> None |
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changeset
|
491 """ensure phase information is loaded in the object""" |
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492 if self._phasesets is None: |
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|
493 try: |
31152
b7cef987356d
phases: remove experimental.nativephaseskillswitch
Jun Wu <quark@fb.com>
parents:
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diff
changeset
|
494 res = self._getphaserevsnative(repo) |
35441
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|
495 self._loadedrevslen, self._phasesets = res |
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|
496 except AttributeError: |
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|
497 self._computephaserevspure(repo) |
22894
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phases: move root phase assignment to it's own function
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|
498 |
22893
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|
499 def invalidate(self): |
35442
56745e58df07
phases: initialize number of loaded revisions to 0
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changeset
|
500 self._loadedrevslen = 0 |
25593
9e551f155810
phase: invalidate the phase's set cache alongside the revs
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changeset
|
501 self._phasesets = None |
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|
502 |
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503 def phase(self, repo, rev): |
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|
504 # type: (localrepo.localrepository, int) -> int |
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|
505 # We need a repo argument here to be able to build _phasesets |
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|
506 # if necessary. The repository instance is not stored in |
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changeset
|
507 # phasecache to avoid reference cycles. The changelog instance |
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|
508 # is not stored because it is a filecache() property and can |
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changeset
|
509 # be replaced without us being notified. |
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changeset
|
510 if rev == nullrev: |
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changeset
|
511 return public |
19984
7d5e7799a29f
rebase: fix rebase aborts when 'tip-1' is public (issue4082)
Durham Goode <durham@fb.com>
parents:
19951
diff
changeset
|
512 if rev < nullrev: |
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|
513 raise ValueError(_(b'cannot lookup negative revision')) |
35441
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phases: rename _phasemaxrev to _loadedrevslen to clarify it isn't max value
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changeset
|
514 if rev >= self._loadedrevslen: |
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diff
changeset
|
515 self.invalidate() |
25611
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changeset
|
516 self.loadphaserevs(repo) |
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|
517 for phase in trackedphases: |
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changeset
|
518 if rev in self._phasesets[phase]: |
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changeset
|
519 return phase |
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|
520 return public |
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changeset
|
521 |
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changeset
|
522 def write(self): |
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changeset
|
523 if not self.dirty: |
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changeset
|
524 return |
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changeset
|
525 f = self.opener(b'phaseroots', b'w', atomictemp=True, checkambig=True) |
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changeset
|
526 try: |
22079
5dcc58649b1a
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22070
diff
changeset
|
527 self._write(f) |
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changeset
|
528 finally: |
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diff
changeset
|
529 f.close() |
22079
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diff
changeset
|
530 |
5dcc58649b1a
phase: extract the phaseroots serialization in a dedicated method
Pierre-Yves David <pierre-yves.david@fb.com>
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22070
diff
changeset
|
531 def _write(self, fp): |
45131
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parents:
45117
diff
changeset
|
532 for phase, roots in pycompat.iteritems(self.phaseroots): |
36452
ab81e5a8fba5
phases: write phaseroots deterministically
Gregory Szorc <gregory.szorc@gmail.com>
parents:
35442
diff
changeset
|
533 for h in sorted(roots): |
43077
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changeset
|
534 fp.write(b'%i %s\n' % (phase, hex(h))) |
16657
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diff
changeset
|
535 self.dirty = False |
15454
5a7dde5adec8
phases: add a moveboundary function to move phases boundaries
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
15419
diff
changeset
|
536 |
22080
37f46575d9c2
phase: attach phase to the transaction instead of the lock
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22079
diff
changeset
|
537 def _updateroots(self, phase, newroots, tr): |
16658
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diff
changeset
|
538 self.phaseroots[phase] = newroots |
22893
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Durham Goode <durham@fb.com>
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diff
changeset
|
539 self.invalidate() |
16658
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diff
changeset
|
540 self.dirty = True |
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diff
changeset
|
541 |
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changeset
|
542 tr.addfilegenerator(b'phase', (b'phaseroots',), self._write) |
687b865b95ad
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diff
changeset
|
543 tr.hookargs[b'phases_moved'] = b'1' |
22080
37f46575d9c2
phase: attach phase to the transaction instead of the lock
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22079
diff
changeset
|
544 |
45790
5d65e04b6a80
phases: convert registernew users to use revision sets
Joerg Sonnenberger <joerg@bec.de>
parents:
45789
diff
changeset
|
545 def registernew(self, repo, tr, targetphase, revs): |
33453
f6b7617a85bb
phases: add a 'registernew' method to set new phases
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parents:
33452
diff
changeset
|
546 repo = repo.unfiltered() |
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diff
changeset
|
547 self._retractboundary(repo, tr, targetphase, [], revs=revs) |
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changeset
|
548 if tr is not None and b'phases' in tr.changes: |
687b865b95ad
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diff
changeset
|
549 phasetracking = tr.changes[b'phases'] |
33453
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33452
diff
changeset
|
550 phase = self.phase |
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diff
changeset
|
551 for rev in sorted(revs): |
33453
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33452
diff
changeset
|
552 revphase = phase(repo, rev) |
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33452
diff
changeset
|
553 _trackphasechange(phasetracking, rev, None, revphase) |
f6b7617a85bb
phases: add a 'registernew' method to set new phases
Boris Feld <boris.feld@octobus.net>
parents:
33452
diff
changeset
|
554 repo.invalidatevolatilesets() |
f6b7617a85bb
phases: add a 'registernew' method to set new phases
Boris Feld <boris.feld@octobus.net>
parents:
33452
diff
changeset
|
555 |
45789
09735cde6275
phases: allow registration and boundary advancement with revision sets
Joerg Sonnenberger <joerg@bec.de>
parents:
45550
diff
changeset
|
556 def advanceboundary( |
09735cde6275
phases: allow registration and boundary advancement with revision sets
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parents:
45550
diff
changeset
|
557 self, repo, tr, targetphase, nodes, revs=None, dryrun=None |
09735cde6275
phases: allow registration and boundary advancement with revision sets
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558 ): |
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559 """Set all 'nodes' to phase 'targetphase' |
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560 |
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561 Nodes with a phase lower than 'targetphase' are not affected. |
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562 |
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563 If dryrun is True, no actions will be performed |
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564 |
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565 Returns a set of revs whose phase is changed or should be changed |
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566 """ |
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567 # Be careful to preserve shallow-copied values: do not update |
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568 # phaseroots values, replace them. |
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569 if revs is None: |
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570 revs = [] |
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571 if tr is None: |
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572 phasetracking = None |
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573 else: |
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574 phasetracking = tr.changes.get(b'phases') |
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575 |
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576 repo = repo.unfiltered() |
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577 revs = [repo[n].rev() for n in nodes] + [r for r in revs] |
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578 |
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579 changes = set() # set of revisions to be changed |
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580 delroots = [] # set of root deleted by this path |
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581 for phase in (phase for phase in allphases if phase > targetphase): |
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582 # filter nodes that are not in a compatible phase already |
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583 revs = [rev for rev in revs if self.phase(repo, rev) >= phase] |
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584 if not revs: |
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585 break # no roots to move anymore |
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586 |
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587 olds = self.phaseroots[phase] |
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588 |
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589 affected = repo.revs(b'%ln::%ld', olds, revs) |
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590 changes.update(affected) |
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591 if dryrun: |
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592 continue |
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593 for r in affected: |
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594 _trackphasechange( |
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595 phasetracking, r, self.phase(repo, r), targetphase |
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596 ) |
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597 |
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598 roots = { |
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599 ctx.node() |
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600 for ctx in repo.set(b'roots((%ln::) - %ld)', olds, affected) |
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601 } |
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602 if olds != roots: |
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603 self._updateroots(phase, roots, tr) |
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604 # some roots may need to be declared for lower phases |
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605 delroots.extend(olds - roots) |
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606 if not dryrun: |
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607 # declare deleted root in the target phase |
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608 if targetphase != 0: |
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609 self._retractboundary(repo, tr, targetphase, delroots) |
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610 repo.invalidatevolatilesets() |
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611 return changes |
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612 |
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613 def retractboundary(self, repo, tr, targetphase, nodes): |
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614 oldroots = { |
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615 phase: revs |
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616 for phase, revs in pycompat.iteritems(self.phaseroots) |
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617 if phase <= targetphase |
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618 } |
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619 if tr is None: |
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620 phasetracking = None |
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621 else: |
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622 phasetracking = tr.changes.get(b'phases') |
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623 repo = repo.unfiltered() |
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624 if ( |
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625 self._retractboundary(repo, tr, targetphase, nodes) |
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626 and phasetracking is not None |
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627 ): |
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628 |
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629 # find the affected revisions |
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630 new = self.phaseroots[targetphase] |
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631 old = oldroots[targetphase] |
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632 affected = set(repo.revs(b'(%ln::) - (%ln::)', new, old)) |
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633 |
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634 # find the phase of the affected revision |
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635 for phase in pycompat.xrange(targetphase, -1, -1): |
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636 if phase: |
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637 roots = oldroots.get(phase, []) |
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638 revs = set(repo.revs(b'%ln::%ld', roots, affected)) |
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639 affected -= revs |
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640 else: # public phase |
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641 revs = affected |
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642 for r in sorted(revs): |
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643 _trackphasechange(phasetracking, r, phase, targetphase) |
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644 repo.invalidatevolatilesets() |
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645 |
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646 def _retractboundary(self, repo, tr, targetphase, nodes, revs=None): |
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647 # Be careful to preserve shallow-copied values: do not update |
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648 # phaseroots values, replace them. |
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649 if revs is None: |
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650 revs = [] |
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651 if targetphase in (archived, internal) and not supportinternal(repo): |
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652 name = phasenames[targetphase] |
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653 msg = b'this repository does not support the %s phase' % name |
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654 raise error.ProgrammingError(msg) |
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655 |
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656 repo = repo.unfiltered() |
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657 torev = repo.changelog.rev |
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658 tonode = repo.changelog.node |
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659 currentroots = {torev(node) for node in self.phaseroots[targetphase]} |
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660 finalroots = oldroots = set(currentroots) |
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661 newroots = [torev(node) for node in nodes] + [r for r in revs] |
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662 newroots = [ |
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663 rev for rev in newroots if self.phase(repo, rev) < targetphase |
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664 ] |
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665 |
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666 if newroots: |
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667 if nullrev in newroots: |
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668 raise error.Abort(_(b'cannot change null revision phase')) |
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669 currentroots.update(newroots) |
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670 |
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671 # Only compute new roots for revs above the roots that are being |
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672 # retracted. |
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673 minnewroot = min(newroots) |
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674 aboveroots = [rev for rev in currentroots if rev >= minnewroot] |
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675 updatedroots = repo.revs(b'roots(%ld::)', aboveroots) |
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676 |
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677 finalroots = {rev for rev in currentroots if rev < minnewroot} |
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678 finalroots.update(updatedroots) |
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679 if finalroots != oldroots: |
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680 self._updateroots( |
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681 targetphase, {tonode(rev) for rev in finalroots}, tr |
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682 ) |
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683 return True |
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684 return False |
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685 |
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686 def filterunknown(self, repo): |
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687 # type: (localrepo.localrepository) -> None |
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688 """remove unknown nodes from the phase boundary |
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689 |
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690 Nothing is lost as unknown nodes only hold data for their descendants. |
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691 """ |
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692 filtered = False |
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693 has_node = repo.changelog.index.has_node # to filter unknown nodes |
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694 for phase, nodes in pycompat.iteritems(self.phaseroots): |
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695 missing = sorted(node for node in nodes if not has_node(node)) |
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696 if missing: |
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697 for mnode in missing: |
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698 repo.ui.debug( |
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699 b'removing unknown node %s from %i-phase boundary\n' |
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700 % (short(mnode), phase) |
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701 ) |
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702 nodes.symmetric_difference_update(missing) |
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703 filtered = True |
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704 if filtered: |
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705 self.dirty = True |
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706 # filterunknown is called by repo.destroyed, we may have no changes in |
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707 # root but _phasesets contents is certainly invalid (or at least we |
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708 # have not proper way to check that). related to issue 3858. |
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709 # |
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710 # The other caller is __init__ that have no _phasesets initialized |
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711 # anyway. If this change we should consider adding a dedicated |
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712 # "destroyed" function to phasecache or a proper cache key mechanism |
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713 # (see branchmap one) |
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714 self.invalidate() |
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715 |
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716 |
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717 def advanceboundary(repo, tr, targetphase, nodes, revs=None, dryrun=None): |
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718 """Add nodes to a phase changing other nodes phases if necessary. |
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719 |
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720 This function move boundary *forward* this means that all nodes |
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721 are set in the target phase or kept in a *lower* phase. |
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722 |
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723 Simplify boundary to contains phase roots only. |
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724 |
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725 If dryrun is True, no actions will be performed |
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726 |
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727 Returns a set of revs whose phase is changed or should be changed |
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728 """ |
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729 if revs is None: |
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730 revs = [] |
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731 phcache = repo._phasecache.copy() |
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732 changes = phcache.advanceboundary( |
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733 repo, tr, targetphase, nodes, revs=revs, dryrun=dryrun |
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|
734 ) |
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735 if not dryrun: |
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|
736 repo._phasecache.replace(phcache) |
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|
737 return changes |
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|
738 |
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739 |
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|
740 def retractboundary(repo, tr, targetphase, nodes): |
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|
741 """Set nodes back to a phase changing other nodes phases if |
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|
742 necessary. |
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743 |
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744 This function move boundary *backward* this means that all nodes |
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|
745 are set in the target phase or kept in a *higher* phase. |
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|
746 |
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|
747 Simplify boundary to contains phase roots only.""" |
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|
748 phcache = repo._phasecache.copy() |
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|
749 phcache.retractboundary(repo, tr, targetphase, nodes) |
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|
750 repo._phasecache.replace(phcache) |
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|
751 |
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|
752 |
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|
753 def registernew(repo, tr, targetphase, revs): |
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754 """register a new revision and its phase |
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|
755 |
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|
756 Code adding revisions to the repository should use this function to |
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|
757 set new changeset in their target phase (or higher). |
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|
758 """ |
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|
759 phcache = repo._phasecache.copy() |
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|
760 phcache.registernew(repo, tr, targetphase, revs) |
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|
761 repo._phasecache.replace(phcache) |
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|
762 |
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763 |
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|
764 def listphases(repo): |
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|
765 # type: (localrepo.localrepository) -> Dict[bytes, bytes] |
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|
766 """List phases root for serialization over pushkey""" |
32000
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767 # Use ordered dictionary so behavior is deterministic. |
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768 keys = util.sortdict() |
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|
769 value = b'%i' % draft |
34816
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|
770 cl = repo.unfiltered().changelog |
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|
771 for root in repo._phasecache.phaseroots[draft]: |
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|
772 if repo._phasecache.phase(repo, cl.rev(root)) <= draft: |
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|
773 keys[hex(root)] = value |
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|
774 |
25624
f0745da75056
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Matt Mackall <mpm@selenic.com>
parents:
25614
diff
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|
775 if repo.publishing(): |
16725
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|
776 # Add an extra data to let remote know we are a publishing |
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|
777 # repo. Publishing repo can't just pretend they are old repo. |
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|
778 # When pushing to a publishing repo, the client still need to |
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|
779 # push phase boundary |
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|
780 # |
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|
781 # Push do not only push changeset. It also push phase data. |
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|
782 # New phase data may apply to common changeset which won't be |
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16724
diff
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|
783 # push (as they are common). Here is a very simple example: |
15648
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784 # |
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785 # 1) repo A push changeset X as draft to repo B |
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786 # 2) repo B make changeset X public |
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787 # 3) repo B push to repo A. X is not pushed but the data that |
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788 # X as now public should |
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789 # |
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790 # The server can't handle it on it's own as it has no idea of |
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791 # client phase data. |
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792 keys[b'publishing'] = b'True' |
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793 return keys |
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794 |
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795 |
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796 def pushphase(repo, nhex, oldphasestr, newphasestr): |
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797 # type: (localrepo.localrepository, bytes, bytes, bytes) -> bool |
17535 | 798 """List phases root for serialization over pushkey""" |
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799 repo = repo.unfiltered() |
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800 with repo.lock(): |
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801 currentphase = repo[nhex].phase() |
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802 newphase = abs(int(newphasestr)) # let's avoid negative index surprise |
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803 oldphase = abs(int(oldphasestr)) # let's avoid negative index surprise |
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804 if currentphase == oldphase and newphase < oldphase: |
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805 with repo.transaction(b'pushkey-phase') as tr: |
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806 advanceboundary(repo, tr, newphase, [bin(nhex)]) |
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807 return True |
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808 elif currentphase == newphase: |
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809 # raced, but got correct result |
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810 return True |
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811 else: |
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812 return False |
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813 |
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814 |
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815 def subsetphaseheads(repo, subset): |
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816 """Finds the phase heads for a subset of a history |
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817 |
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818 Returns a list indexed by phase number where each item is a list of phase |
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819 head nodes. |
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820 """ |
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821 cl = repo.changelog |
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822 |
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823 headsbyphase = {i: [] for i in allphases} |
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824 # No need to keep track of secret phase; any heads in the subset that |
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825 # are not mentioned are implicitly secret. |
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826 for phase in allphases[:secret]: |
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827 revset = b"heads(%%ln & %s())" % phasenames[phase] |
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828 headsbyphase[phase] = [cl.node(r) for r in repo.revs(revset, subset)] |
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829 return headsbyphase |
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830 |
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831 |
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832 def updatephases(repo, trgetter, headsbyphase): |
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833 """Updates the repo with the given phase heads""" |
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834 # Now advance phase boundaries of all phases |
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835 # |
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836 # run the update (and fetch transaction) only if there are actually things |
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837 # to update. This avoid creating empty transaction during no-op operation. |
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838 |
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839 for phase in allphases: |
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840 revset = b'%ln - _phase(%s)' |
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841 heads = [c.node() for c in repo.set(revset, headsbyphase[phase], phase)] |
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842 if heads: |
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843 advanceboundary(repo, trgetter(), phase, heads) |
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844 |
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845 |
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846 def analyzeremotephases(repo, subset, roots): |
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847 """Compute phases heads and root in a subset of node from root dict |
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848 |
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849 * subset is heads of the subset |
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850 * roots is {<nodeid> => phase} mapping. key and value are string. |
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851 |
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852 Accept unknown element input |
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853 """ |
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854 repo = repo.unfiltered() |
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855 # build list from dictionary |
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856 draftroots = [] |
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857 has_node = repo.changelog.index.has_node # to filter unknown nodes |
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858 for nhex, phase in pycompat.iteritems(roots): |
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859 if nhex == b'publishing': # ignore data related to publish option |
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860 continue |
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861 node = bin(nhex) |
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862 phase = int(phase) |
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863 if phase == public: |
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864 if node != repo.nullid: |
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865 repo.ui.warn( |
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866 _( |
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867 b'ignoring inconsistent public root' |
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868 b' from remote: %s\n' |
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869 ) |
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870 % nhex |
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871 ) |
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872 elif phase == draft: |
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873 if has_node(node): |
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874 draftroots.append(node) |
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875 else: |
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876 repo.ui.warn( |
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877 _(b'ignoring unexpected root from remote: %i %s\n') |
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878 % (phase, nhex) |
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879 ) |
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880 # compute heads |
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|
881 publicheads = newheads(repo, subset, draftroots) |
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882 return publicheads, draftroots |
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883 |
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884 |
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885 class remotephasessummary(object): |
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886 """summarize phase information on the remote side |
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887 |
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888 :publishing: True is the remote is publishing |
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889 :publicheads: list of remote public phase heads (nodes) |
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890 :draftheads: list of remote draft phase heads (nodes) |
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891 :draftroots: list of remote draft phase root (nodes) |
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892 """ |
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|
893 |
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894 def __init__(self, repo, remotesubset, remoteroots): |
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895 unfi = repo.unfiltered() |
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896 self._allremoteroots = remoteroots |
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897 |
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898 self.publishing = remoteroots.get(b'publishing', False) |
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899 |
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900 ana = analyzeremotephases(repo, remotesubset, remoteroots) |
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901 self.publicheads, self.draftroots = ana |
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902 # Get the list of all "heads" revs draft on remote |
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903 dheads = unfi.set(b'heads(%ln::%ln)', self.draftroots, remotesubset) |
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904 self.draftheads = [c.node() for c in dheads] |
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905 |
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906 |
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907 def newheads(repo, heads, roots): |
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908 """compute new head of a subset minus another |
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909 |
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910 * `heads`: define the first subset |
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911 * `roots`: define the second we subtract from the first""" |
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912 # prevent an import cycle |
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913 # phases > dagop > patch > copies > scmutil > obsolete > obsutil > phases |
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914 from . import dagop |
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915 |
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916 repo = repo.unfiltered() |
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917 cl = repo.changelog |
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918 rev = cl.index.get_rev |
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919 if not roots: |
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920 return heads |
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921 if not heads or heads == [repo.nullid]: |
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922 return [] |
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923 # The logic operated on revisions, convert arguments early for convenience |
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924 new_heads = {rev(n) for n in heads if n != repo.nullid} |
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925 roots = [rev(n) for n in roots] |
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926 # compute the area we need to remove |
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927 affected_zone = repo.revs(b"(%ld::%ld)", roots, new_heads) |
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928 # heads in the area are no longer heads |
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929 new_heads.difference_update(affected_zone) |
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930 # revisions in the area have children outside of it, |
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931 # They might be new heads |
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932 candidates = repo.revs( |
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933 b"parents(%ld + (%ld and merge())) and not null", roots, affected_zone |
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934 ) |
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935 candidates -= affected_zone |
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936 if new_heads or candidates: |
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937 # remove candidate that are ancestors of other heads |
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938 new_heads.update(candidates) |
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939 prunestart = repo.revs(b"parents(%ld) and not null", new_heads) |
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940 pruned = dagop.reachableroots(repo, candidates, prunestart) |
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|
941 new_heads.difference_update(pruned) |
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942 |
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943 return pycompat.maplist(cl.node, sorted(new_heads)) |
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|
944 |
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945 |
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|
946 def newcommitphase(ui): |
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947 # type: (uimod.ui) -> int |
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|
948 """helper to get the target phase of new commit |
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949 |
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|
950 Handle all possible values for the phases.new-commit options. |
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951 |
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952 """ |
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953 v = ui.config(b'phases', b'new-commit') |
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954 try: |
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|
955 return phasenumber2[v] |
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|
956 except KeyError: |
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|
957 raise error.ConfigError( |
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|
958 _(b"phases.new-commit: not a valid phase name ('%s')") % v |
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|
959 ) |
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|
960 |
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|
961 |
17671
fdd0fc046cf1
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|
962 def hassecret(repo): |
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|
963 # type: (localrepo.localrepository) -> bool |
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|
964 """utility function that check if a repo have any secret changeset.""" |
45063
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diff
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|
965 return bool(repo._phasecache.phaseroots[secret]) |
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|
966 |
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|
967 |
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|
968 def preparehookargs(node, old, new): |
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|
969 # type: (bytes, Optional[int], Optional[int]) -> Dict[bytes, bytes] |
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|
970 if old is None: |
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971 old = b'' |
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|
972 else: |
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|
973 old = phasenames[old] |
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974 return {b'node': node, b'oldphase': old, b'phase': phasenames[new]} |