[PATCH 1/2] remote-hg: add shared repo upgrade

From: Antoine Pelisse <apelisse@gmail.com>
Date: Aug 9, 2013, 16:49 UTC
Message-ID: <1376066986-27950-1-git-send-email-apelisse@gmail.com>
In-Reply-To: <CALWbr2y+fE1EvGuTQXQiL81yavpDR+RqmrxWjNTUme-fmjY8EQ@mail.gmail.com>

From: Felipe Contreras <felipe.contreras@gmail.com>

6796d49 (remote-hg: use a shared repository store) introduced a bug by making the shared repository '.git/hg', which is already used before that patch, so clones that happened before that patch, fail after that patch, because there's no shared Mercurial repo.

It's trivial to upgrade to the new organization by copying the Mercurial repo from one of the remotes (e.g. 'origin'), so let's do so. If we can't find any existing repo, we create an empty one.

Reported-by: Joern Hees <dev@joernhees.de>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
---
 contrib/remote-helpers/git-remote-hg |   21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/contrib/remote-helpers/git-remote-hg b/contrib/remote-helpers/git-remote-hg
index 0194c67..1897327 100755
--- a/contrib/remote-helpers/git-remote-hg
+++ b/contrib/remote-helpers/git-remote-hg
@@ -391,11 +391,22 @@ def get_repo(url, alias):
             os.makedirs(dirname)
     else:
         shared_path = os.path.join(gitdir, 'hg')
-        if not os.path.exists(shared_path):
-            try:
-                hg.clone(myui, {}, url, shared_path, update=False, pull=True)
-            except:
-                die('Repository error')
+
+        # check and upgrade old organization
+        hg_path = os.path.join(shared_path, '.hg')
+        if os.path.exists(shared_path) and not os.path.exists(hg_path):
+            repos = os.listdir(shared_path)
+            for x in repos:
+                local_hg = os.path.join(shared_path, x, 'clone', '.hg')
+                if os.path.exists(local_hg):
+                    shutil.copytree(local_hg, hg_path)
+                    break
+
+        # setup shared repo (if not there)
+        try:
+            hg.peer(myui, {}, shared_path, create=True)
+        except error.RepoError:
+            pass

         if not os.path.exists(dirname):
             os.makedirs(dirname)
--
1.7.9.5