| 1 | # -*- mode: python; coding: utf-8 -*- |
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| 2 | # :Progetto: vcpx -- Dual working directory |
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| 3 | # :Creato: dom 20 giu 2004 11:02:01 CEST |
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| 4 | # :Autore: Lele Gaifax <lele@nautilus.homeip.net> |
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| 5 | # :Licenza: GNU General Public License |
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| 6 | # |
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| 7 | |
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| 8 | """ |
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| 9 | The easiest way to propagate changes from one VC control system to one |
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| 10 | of an another kind is having a single directory containing a live |
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| 11 | working copy shared between the two VC systems. |
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| 12 | |
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| 13 | In a slightly more elaborated way, the source and the target system may |
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| 14 | use separate directories, that gets rsynced when needed. |
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| 15 | |
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| 16 | This module implements `DualWorkingDir`, which instances have a |
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| 17 | `source` and `target` properties offering the right capabilities to do |
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| 18 | the job. |
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| 19 | """ |
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| 20 | |
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| 21 | __docformat__ = 'reStructuredText' |
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| 22 | |
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| 23 | from source import UpdatableSourceWorkingDir, InvocationError |
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| 24 | from target import SynchronizableTargetWorkingDir |
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| 25 | from shwrap import ExternalCommand |
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| 26 | from datetime import datetime |
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| 27 | |
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| 28 | IGNORED_METADIRS = [] |
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| 29 | |
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| 30 | class DualWorkingDir(UpdatableSourceWorkingDir, SynchronizableTargetWorkingDir): |
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| 31 | """ |
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| 32 | Dual working directory, one that is under two different VC systems at |
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| 33 | the same time. |
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| 34 | |
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| 35 | This class reimplements the two interfaces, dispatching the right method |
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| 36 | to the right backend. |
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| 37 | """ |
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| 38 | |
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| 39 | def __init__(self, source_repo, target_repo): |
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| 40 | global IGNORED_METADIRS |
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| 41 | from os.path import sep |
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| 42 | |
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| 43 | self.source = source_repo.workingDir() |
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| 44 | self.target = target_repo.workingDir() |
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| 45 | |
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| 46 | sbdir = self.source.basedir.rstrip(sep)+sep |
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| 47 | tbdir = self.target.basedir.rstrip(sep)+sep |
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| 48 | if sbdir == tbdir: |
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| 49 | shared = True |
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| 50 | elif tbdir.startswith(sbdir): |
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| 51 | raise InvocationError('Target base directory "%s" cannot be a ' |
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| 52 | 'subdirectory of source directory "%s"' %( |
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| 53 | (tbdir, sbdir))) |
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| 54 | elif sbdir.startswith(tbdir): |
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| 55 | shared = True |
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| 56 | else: |
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| 57 | shared = False |
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| 58 | self.shared_basedirs = shared |
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| 59 | self.source.shared_basedirs = shared |
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| 60 | self.target.shared_basedirs = shared |
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| 61 | |
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| 62 | IGNORED_METADIRS = filter(None, [source_repo.METADIR, |
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| 63 | target_repo.METADIR]) |
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| 64 | IGNORED_METADIRS.extend(source_repo.EXTRA_METADIRS) |
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| 65 | IGNORED_METADIRS.extend(target_repo.EXTRA_METADIRS) |
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| 66 | |
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| 67 | self.source.prepareSourceRepository() |
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| 68 | self.target.prepareTargetRepository() |
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| 69 | |
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| 70 | # UpdatableSourceWorkingDir |
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| 71 | |
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| 72 | self.getPendingChangesets = self.source.getPendingChangesets |
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| 73 | self.checkoutUpstreamRevision = self.source.checkoutUpstreamRevision |
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| 74 | |
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| 75 | # SynchronizableTargetWorkingDir |
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| 76 | |
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| 77 | self.prepareWorkingDirectory = self.target.prepareWorkingDirectory |
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| 78 | |
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| 79 | def setStateFile(self, state_file): |
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| 80 | """ |
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| 81 | Set the state file used to store the revision and pending changesets. |
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| 82 | """ |
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| 83 | |
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| 84 | self.source.setStateFile(state_file) |
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| 85 | self.target.setStateFile(state_file) |
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| 86 | |
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| 87 | def setLogfile(self, logfile): |
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| 88 | """ |
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| 89 | Set the name of the logfile, just to ignore it. |
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| 90 | """ |
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| 91 | |
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| 92 | self.target.logfile = logfile |
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| 93 | |
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| 94 | def applyPendingChangesets(self, applyable=None, replay=None, applied=None): |
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| 95 | return self.source.applyPendingChangesets(replay=self.replayChangeset, |
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| 96 | applyable=applyable, |
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| 97 | applied=applied) |
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| 98 | |
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| 99 | def importFirstRevision(self, source_repo, changeset, initial): |
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| 100 | if not self.shared_basedirs: |
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| 101 | self._syncTargetWithSource() |
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| 102 | self.target.importFirstRevision(source_repo, changeset, initial) |
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| 103 | |
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| 104 | def replayChangeset(self, changeset): |
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| 105 | if not self.shared_basedirs: |
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| 106 | self._syncTargetWithSource() |
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| 107 | self.target.replayChangeset(changeset) |
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| 108 | |
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| 109 | def _syncTargetWithSource(self): |
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| 110 | cmd = ['rsync', '--delete', '--archive'] |
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| 111 | now = datetime.now() |
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| 112 | if hasattr(self, '_last_rsync'): |
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| 113 | last = self._last_rsync |
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| 114 | if not (now-last).seconds: |
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| 115 | cmd.append('--ignore-times') |
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| 116 | self._last_rsync = now |
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| 117 | for M in IGNORED_METADIRS: |
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| 118 | cmd.extend(['--exclude', M]) |
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| 119 | |
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| 120 | rsync = ExternalCommand(command=cmd) |
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| 121 | rsync.execute(self.source.basedir+'/', self.target.basedir) |
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