git-p4: commit time should be most recent p4 change time

When importing a repo, the time on the initial commit had been
just "now".  But this causes problems when trying to share among
git-p4 repos that were created identically, although at different
times.  Instead, use the time in the top-most p4 change as the
time for the git import commit.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4
index 98d2aee67f..6b9de9e7e0 100755
--- a/contrib/fast-import/git-p4
+++ b/contrib/fast-import/git-p4
@@ -1649,7 +1649,8 @@ class P4Sync(Command, P4UserMap):
     def importHeadRevision(self, revision):
         print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
 
-        details = { "user" : "git perforce import user", "time" : int(time.time()) }
+        details = {}
+        details["user"] = "git perforce import user"
         details["desc"] = ("Initial import of %s from the state at revision %s\n"
                            % (' '.join(self.depotPaths), revision))
         details["change"] = revision
@@ -1689,6 +1690,18 @@ class P4Sync(Command, P4UserMap):
             fileCnt = fileCnt + 1
 
         details["change"] = newestRevision
+
+        # Use time from top-most change so that all git-p4 clones of
+        # the same p4 repo have the same commit SHA1s.
+        res = p4CmdList("describe -s %d" % newestRevision)
+        newestTime = None
+        for r in res:
+            if r.has_key('time'):
+                newestTime = int(r['time'])
+        if newestTime is None:
+            die("\"describe -s\" on newest change %d did not give a time")
+        details["time"] = newestTime
+
         self.updateOptionDict(details)
         try:
             self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)