author | Yuya Nishihara <yuya@tcha.org> |
Mon, 21 Sep 2015 22:30:44 +0900 | |
changeset 1507 | 6f574c76c142 |
parent 1210 | 1f8428096078 |
child 1553 | ed63bf62ff02 |
permissions | -rw-r--r-- |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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'''This extension add a hacky command to drop changeset during review |
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This extension is intended as a temporary hack to allow Matt Mackall to use |
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evolve in the Mercurial review it self. You should probably not use it if your |
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name is not Matt Mackall. |
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''' |
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import os |
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import time |
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import contextlib |
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from mercurial.i18n import _ |
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from mercurial import cmdutil |
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from mercurial import repair |
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from mercurial import scmutil |
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from mercurial import lock as lockmod |
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from mercurial import util |
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from mercurial import commands |
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cmdtable = {} |
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command = cmdutil.command(cmdtable) |
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@contextlib.contextmanager |
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def timed(ui, caption): |
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ostart = os.times() |
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cstart = time.time() |
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yield |
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cstop = time.time() |
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ostop = os.times() |
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wall = cstop - cstart |
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user = ostop[0] - ostart[0] |
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sys = ostop[1] - ostart[1] |
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comb = user + sys |
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ui.write("%s: wall %f comb %f user %f sys %f\n" |
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% (caption, wall, comb, user, sys)) |
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def obsmarkerchainfrom(obsstore, nodes): |
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"""return all marker chain starting from node |
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Starting from mean "use as successors".""" |
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# XXX need something smarter for descendant of bumped changeset |
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seennodes = set(nodes) |
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seenmarkers = set() |
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pendingnodes = set(nodes) |
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precursorsmarkers = obsstore.precursors |
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while pendingnodes: |
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current = pendingnodes.pop() |
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new = set() |
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for precmark in precursorsmarkers.get(current, ()): |
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if precmark in seenmarkers: |
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continue |
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seenmarkers.add(precmark) |
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new.add(precmark[0]) |
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yield precmark |
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new -= seennodes |
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pendingnodes |= new |
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def stripmarker(ui, repo, markers): |
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"""remove <markers> from the repo obsstore |
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The old obsstore content is saved in a `obsstore.prestrip` file |
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""" |
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repo = repo.unfiltered() |
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repo.destroying() |
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oldmarkers = list(repo.obsstore._all) |
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util.rename(repo.sjoin('obsstore'), |
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repo.join('obsstore.prestrip')) |
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del repo.obsstore # drop the cache |
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newstore = repo.obsstore |
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assert not newstore # should be empty after rename |
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newmarkers = [m for m in oldmarkers if m not in markers] |
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tr = repo.transaction('drophack') |
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try: |
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newstore.add(tr, newmarkers) |
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tr.close() |
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finally: |
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tr.release() |
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repo.destroyed() |
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@command('drop', [('r', 'rev', [], 'revision to update')], _('[-r] revs')) |
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def cmddrop(ui, repo, *revs, **opts): |
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"""I'm hacky do not use me! |
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This command strip a changeset, its precursors and all obsolescence marker |
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associated to its chain. |
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There is no way to limit the extend of the purge yet. You may have to |
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repull from other source to get some changeset and obsolescence marker |
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back. |
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This intended for Matt Mackall usage only. do not use me. |
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""" |
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revs = list(revs) |
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revs.extend(opts['rev']) |
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if not revs: |
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revs = ['.'] |
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# get the changeset |
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revs = scmutil.revrange(repo, revs) |
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if not revs: |
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ui.write_err('no revision to drop\n') |
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105 |
return 1 |
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106 |
# lock from the beginning to prevent race |
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107 |
wlock = lock = None |
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108 |
try: |
1001
f7f4a1fac6c0
test: use `hg log` in the `getid` function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
812
diff
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109 |
wlock = repo.wlock() |
790
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110 |
lock = repo.lock() |
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111 |
# check they have no children |
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112 |
if repo.revs('%ld and public()', revs): |
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113 |
ui.write_err('cannot drop public revision') |
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114 |
return 1 |
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115 |
if repo.revs('children(%ld) - %ld', revs, revs): |
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116 |
ui.write_err('cannot drop revision with children') |
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117 |
return 1 |
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118 |
if repo.revs('. and %ld', revs): |
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119 |
newrevs = repo.revs('max(::. - %ld)', revs) |
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120 |
if newrevs: |
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121 |
assert len(newrevs) == 1 |
1121
1a39b1b8e092
drophack: use `first` and `last` on smartset
Pierre-Yves David <pierre-yves.david@fb.com>
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1001
diff
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122 |
newrev = newrevs.first() |
790
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123 |
else: |
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124 |
newrev = -1 |
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125 |
commands.update(ui, repo, newrev) |
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126 |
ui.status(_('working directory now at %s\n') % repo[newrev]) |
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127 |
# get all markers and successors up to root |
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128 |
nodes = [repo[r].node() for r in revs] |
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129 |
with timed(ui, 'search obsmarker'): |
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130 |
markers = set(obsmarkerchainfrom(repo.obsstore, nodes)) |
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131 |
ui.write('%i obsmarkers found\n' % len(markers)) |
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132 |
cl = repo.unfiltered().changelog |
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133 |
with timed(ui, 'search nodes'): |
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134 |
allnodes = set(nodes) |
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135 |
allnodes.update(m[0] for m in markers if cl.hasnode(m[0])) |
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136 |
ui.write('%i nodes found\n' % len(allnodes)) |
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137 |
cl = repo.changelog |
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|
138 |
visiblenodes = set(n for n in allnodes if cl.hasnode(n)) |
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|
139 |
# check constraint again |
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|
140 |
if repo.revs('%ln and public()', visiblenodes): |
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parents:
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|
141 |
ui.write_err('cannot drop public revision') |
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|
142 |
return 1 |
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drophack: add a new drop hack extension for Matt Mackall usage
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|
143 |
if repo.revs('children(%ln) - %ln', visiblenodes, visiblenodes): |
5af309865040
drophack: add a new drop hack extension for Matt Mackall usage
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|
144 |
ui.write_err('cannot drop revision with children') |
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|
145 |
return 1 |
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|
146 |
|
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|
147 |
if markers: |
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148 |
# strip them |
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|
149 |
with timed(ui, 'strip obsmarker'): |
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150 |
stripmarker(ui, repo, markers) |
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|
151 |
# strip the changeset |
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|
152 |
with timed(ui, 'strip nodes'): |
1210
1f8428096078
drophack: fix to match upstream repair.strip
Durham Goode <durham@fb.com>
parents:
1121
diff
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|
153 |
repair.strip(ui, repo, list(allnodes), backup="all", topic='drophack') |
790
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154 |
|
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|
155 |
finally: |
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156 |
lockmod.release(lock, wlock) |
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157 |
|
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|
158 |
# rewrite the whole file. |
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|
159 |
# print data. |
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|
160 |
# - time to compute the chain |
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|
161 |
# - time to strip the changeset |
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|
162 |
# - time to strip the obs marker. |