diff options
| -rwxr-xr-x | contrib/fast-import/git-p4 | 23 | ||||
| -rw-r--r-- | contrib/fast-import/git-p4.txt | 20 |
2 files changed, 41 insertions, 2 deletions
diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4 index cb9961a571..e653e8cd37 100755 --- a/contrib/fast-import/git-p4 +++ b/contrib/fast-import/git-p4 @@ -419,7 +419,8 @@ class P4Sync(Command): optparse.make_option("--known-branches", dest="knownBranches"), optparse.make_option("--data-cache", dest="dataCache", action="store_true"), optparse.make_option("--command-cache", dest="commandCache", action="store_true"), - optparse.make_option("--detect-labels", dest="detectLabels", action="store_true") + optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"), + optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true") ] self.description = """Imports from Perforce into a git repository.\n example: @@ -441,6 +442,7 @@ class P4Sync(Command): self.detectBranches = False self.detectLabels = False self.changesFile = "" + self.syncWithOrigin = False def p4File(self, depotPath): return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read() @@ -831,6 +833,21 @@ class P4Sync(Command): # importing into default remotes/p4/* layout? defaultImport = False + if self.syncWithOrigin and gitBranchExists("origin") and gitBranchExists("refs/remotes/p4/master"): + print "Syncing with origin first as requested by calling git fetch origin" + system("git fetch origin") + [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin")) + [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4")) + if len(originPreviousDepotPath) > 0 and len(originP4Change) > 0 and len(p4Change) > 0: + if originPreviousDepotPath == p4PreviousDepotPath: + originP4Change = int(originP4Change) + p4Change = int(p4Change) + if originP4Change > p4Change: + print "origin (%s) is newer than p4 (%s). Updating p4 branch from origin." % (originP4Change, p4Change) + system("git update-ref refs/remotes/p4/master origin"); + else: + print "Cannot sync with origin. It was imported from %s while remotes/p4 was imported from %s" % (originPreviousDepotPath, p4PreviousDepotPath) + if len(self.branch) == 0: self.branch = "refs/remotes/p4/master" if gitBranchExists("refs/heads/p4"): @@ -1037,11 +1054,13 @@ class P4Sync(Command): class P4Rebase(Command): def __init__(self): Command.__init__(self) - self.options = [ ] + self.options = [ optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true") ] self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it" + self.syncWithOrigin = False def run(self, args): sync = P4Sync() + sync.syncWithOrigin = self.syncWithOrigin sync.run([]) print "Rebasing the current branch" oldHead = mypopen("git rev-parse HEAD").read()[:-1] diff --git a/contrib/fast-import/git-p4.txt b/contrib/fast-import/git-p4.txt index 32aeb0ac0b..ac8e6cff0b 100644 --- a/contrib/fast-import/git-p4.txt +++ b/contrib/fast-import/git-p4.txt @@ -63,6 +63,26 @@ It is recommended to run 'git repack -a -d -f' from time to time when using incremental imports to optimally combine the individual git packs that each incremental import creates through the use of git-fast-import. + +A useful setup may be that you have a periodically updated git repository +somewhere that contains a complete import of a Perforce project. That git +repository can be used to clone the working repository from and one would +import from Perforce directly after cloning using git-p4. If the connection to +the Perforce server is slow and the working repository hasn't been synced for a +while it may be desirable to fetch changes from the origin git repository using +the efficient git protocol. git-p4 supports this through + + git-p4 sync --with-origin + +or + + git-p4 rebase --with-origin + +In that case "git fetch origin" is called and if it turns out that the origin +branch is newer than the git "p4" import branch then the latter is updated from +the former and the direct import from Perforce is resumed, which will result in +fewer changes to be imported using the slower perforce connection. + Updating ======== |