annotate hgext/share.py @ 23367:115af8de76a4

subrepo: add "_cachestorehashvfs" to handle cache store hash files via vfs This "vfs" object will be used by subsequent patches to handle cache store hash files without direct file APIs. This patch decorates "_cachestorehashvfs" with "@propertycache" to delay vfs creation, because it is used only for cooperation with other repositories. In this patch, "/" is used as the path separator, even though "self._repo.join" uses platform specific path separator (e.g. "\\" on Windows). But it is reasonable enough, because "store" and other management file handling already include such implementation, and they work well.
author FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
date Wed, 19 Nov 2014 18:35:14 +0900
parents 5a4d1a6c605f
children 141baca16059
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1 # Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5
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6 '''share a common history between several working directories'''
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7
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8 from mercurial.i18n import _
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9 from mercurial import cmdutil, hg, util
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10
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11 cmdtable = {}
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12 command = cmdutil.command(cmdtable)
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13 testedwith = 'internal'
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14
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15 @command('share',
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16 [('U', 'noupdate', None, _('do not create a working copy'))],
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17 _('[-U] SOURCE [DEST]'),
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18 norepo=True)
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19 def share(ui, source, dest=None, noupdate=False):
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20 """create a new shared repository
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21
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22 Initialize a new repository and working directory that shares its
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23 history with another repository.
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24
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25 .. note::
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26
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27 using rollback or extensions that destroy/modify history (mq,
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28 rebase, etc.) can cause considerable confusion with shared
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29 clones. In particular, if two shared clones are both updated to
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30 the same changeset, and one of them destroys that changeset
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31 with rollback, the other clone will suddenly stop working: all
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32 operations will fail with "abort: working directory has unknown
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33 parent". The only known workaround is to use debugsetparents on
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34 the broken clone to reset it to a changeset that still exists.
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35 """
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36
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37 return hg.share(ui, source, dest, not noupdate)
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38
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39 @command('unshare', [], '')
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40 def unshare(ui, repo):
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41 """convert a shared repository to a normal one
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42
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43 Copy the store data to the repo and remove the sharedpath data.
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44 """
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45
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46 if repo.sharedpath == repo.path:
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47 raise util.Abort(_("this is not a shared repo"))
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48
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49 destlock = lock = None
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50 lock = repo.lock()
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51 try:
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52 # we use locks here because if we race with commit, we
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53 # can end up with extra data in the cloned revlogs that's
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54 # not pointed to by changesets, thus causing verify to
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55 # fail
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56
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57 destlock = hg.copystore(ui, repo, repo.path)
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58
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59 sharefile = repo.join('sharedpath')
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60 util.rename(sharefile, sharefile + '.old')
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61
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62 repo.requirements.discard('sharedpath')
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63 repo._writerequirements()
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64 finally:
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65 destlock and destlock.release()
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66 lock and lock.release()
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67
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68 # update store, spath, sopener and sjoin of repo
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69 repo.unfiltered().__init__(repo.baseui, repo.root)