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[PATCH v3 17/23] transport-helper: update ref status after push with export

From
Sverre Rabbelier <srabbelier@gmail.com>
Date
Jul 16, 2011, 13:03 UTC
Message-ID
<1310821424-4750-18-git-send-email-srabbelier@gmail.com>
In-Reply-To
<1310821424-4750-1-git-send-email-srabbelier@gmail.com>
Also add check_output from python 2.7.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
---
  Unchanged, although see later patches that demonstrate that
  deleted refs don't work.
 git-remote-testgit.py              |    6 +++++-
 git_remote_helpers/git/importer.py |   28 +++++++++++++++++++++++++++-
 git_remote_helpers/util.py         |   34 ++++++++++++++++++++++++++++++++++
 transport-helper.c                 |    1 +
 4 files changed, 67 insertions(+), 2 deletions(-)
diff --git a/git-remote-testgit.py b/git-remote-testgit.py
index af4d040..0b5928d 100644
--- a/git-remote-testgit.py
+++ b/git-remote-testgit.py
@@ -147,11 +147,15 @@ def do_export(repo, args):
     sys.stdout.flush()
 
     update_local_repo(repo)
-    repo.importer.do_import(repo.gitdir)
+    changed = repo.importer.do_import(repo.gitdir)
 
     if not repo.local:
         repo.non_local.push(repo.gitdir)
 
+    for ref in changed:
+        print "ok %s" % ref
+    print
+
 
 COMMANDS = {
     'capabilities': do_capabilities,
diff --git a/git_remote_helpers/git/importer.py b/git_remote_helpers/git/importer.py
index 02a719a..5c6b595 100644
--- a/git_remote_helpers/git/importer.py
+++ b/git_remote_helpers/git/importer.py
@@ -1,7 +1,7 @@
 import os
 import subprocess
 
-from git_remote_helpers.util import check_call
+from git_remote_helpers.util import check_call, check_output
 
 
 class GitImporter(object):
@@ -16,6 +16,18 @@ class GitImporter(object):
 
         self.repo = repo
 
+    def get_refs(self, gitdir):
+        """Returns a dictionary with refs.
+        """
+        args = ["git", "--git-dir=" + gitdir, "for-each-ref", "refs/heads"]
+        lines = check_output(args).strip().split('\n')
+        refs = {}
+        for line in lines:
+            value, name = line.split(' ')
+            name = name.strip('commit\t')
+            refs[name] = value
+        return refs
+
     def do_import(self, base):
         """Imports a fast-import stream to the given directory.
 
@@ -32,9 +44,23 @@ class GitImporter(object):
         if not os.path.exists(dirname):
             os.makedirs(dirname)
 
+        refs_before = self.get_refs(gitdir)
+
         args = ["git", "--git-dir=" + gitdir, "fast-import", "--quiet", "--export-marks=" + path]
 
         if os.path.exists(path):
             args.append("--import-marks=" + path)
 
         check_call(args)
+
+        refs_after = self.get_refs(gitdir)
+
+        changed = {}
+
+        for name, value in refs_after.iteritems():
+            if refs_before.get(name) == value:
+                continue
+
+            changed[name] = value
+
+        return changed
diff --git a/git_remote_helpers/util.py b/git_remote_helpers/util.py
index 1652c65..fbbb01b 100644
--- a/git_remote_helpers/util.py
+++ b/git_remote_helpers/util.py
@@ -175,6 +175,40 @@ def check_call(*popenargs, **kwargs):
     return 0
 
 
+# from python2.7:subprocess.py
+def check_output(*popenargs, **kwargs):
+    r"""Run command with arguments and return its output as a byte string.
+
+    If the exit code was non-zero it raises a CalledProcessError.  The
+    CalledProcessError object will have the return code in the returncode
+    attribute and output in the output attribute.
+
+    The arguments are the same as for the Popen constructor.  Example:
+
+    >>> check_output(["ls", "-l", "/dev/null"])
+    'crw-rw-rw- 1 root root 1, 3 Oct 18  2007 /dev/null\n'
+
+    The stdout argument is not allowed as it is used internally.
+    To capture standard error in the result, use stderr=STDOUT.
+
+    >>> check_output(["/bin/sh", "-c",
+    ...               "ls -l non_existent_file ; exit 0"],
+    ...              stderr=STDOUT)
+    'ls: non_existent_file: No such file or directory\n'
+    """
+    if 'stdout' in kwargs:
+        raise ValueError('stdout argument not allowed, it will be overridden.')
+    process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
+    output, unused_err = process.communicate()
+    retcode = process.poll()
+    if retcode:
+        cmd = kwargs.get("args")
+        if cmd is None:
+            cmd = popenargs[0]
+        raise subprocess.CalledProcessError(retcode, cmd)
+    return output
+
+
 def file_reader_method (missing_ok = False):
     """Decorator for simplifying reading of files.
 
diff --git a/transport-helper.c b/transport-helper.c
index 4c0d861..a8f69b0 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -764,6 +764,7 @@ static int push_refs_with_export(struct transport *transport,
 
 	if (finish_command(&exporter))
 		die("Error while running fast-export");
+	push_update_refs_status(data, remote_refs);
 	return 0;
 }
 
-- 
1.7.5.1.292.g728120
Previous: Sverre RabbelierNext: Sverre Rabbelier
Message 20 of 29 in “remote-helper improvements”
  1. 00/23 remote-helper improvementsSverre Rabbelier, Jul 16, 2011
  2. 01/23 transport-helper: fix minor leak in push_refs_with_exportSverre Rabbelier, Jul 16, 2011
  3. 02/23 t5800: factor out some ref testsSverre Rabbelier, Jul 16, 2011
  4. 03/23 t5800: use skip_all instead of prereqSverre Rabbelier, Jul 16, 2011
  5. 04/23 t5800: document some non-functional parts of remote helpersSverre Rabbelier, Jul 16, 2011
  6. 05/23 git-remote-testgit: import non-HEAD refsSverre Rabbelier, Jul 16, 2011
  7. 06/23 transport-helper: don't feed bogus refs to export pushSverre Rabbelier, Jul 16, 2011
  8. 07/23 git_remote_helpers: push all refs during a non-local exportSverre Rabbelier, Jul 16, 2011
  9. Junio C HamanoJul 17, 2011
  10. Sverre RabbelierJul 23, 2011
  11. 08/23 remote-helpers: export GIT_DIR variable to helpersSverre Rabbelier, Jul 16, 2011
  12. 09/23 remote-curl: accept empty line as terminatorSverre Rabbelier, Jul 16, 2011
  13. 10/23 git-remote-testgit: only push for non-local repositoriesSverre Rabbelier, Jul 16, 2011
  14. 11/23 git-remote-testgit: fix error handlingSverre Rabbelier, Jul 16, 2011
  15. 12/23 fast-import: introduce 'done' commandSverre Rabbelier, Jul 16, 2011
  16. 13/23 fast-export: support done featureSverre Rabbelier, Jul 16, 2011
  17. 14/23 transport-helper: factor out push_update_refs_statusSverre Rabbelier, Jul 16, 2011
  18. 15/23 transport-helper: check status code of finish_commandSverre Rabbelier, Jul 16, 2011
  19. 16/23 transport-helper: use the new done feature where possibleSverre Rabbelier, Jul 16, 2011
  20. 17/23 transport-helper: update ref status after push with exportSverre Rabbelier, Jul 16, 2011
  21. 18/23 transport-helper: change import semanticsSverre Rabbelier, Jul 16, 2011
  22. Dmitry IvankovJul 18, 2011
  23. 19/23 transport-helper: Use capname for refspec capability tooSverre Rabbelier, Jul 16, 2011
  24. 20/23 transport-helper: implement marks location as capabilitySverre Rabbelier, Jul 16, 2011
  25. 21/23 transport-helper: die early on encountering deleted refsSverre Rabbelier, Jul 16, 2011
  26. 22/23 t5800: document inability to push new branch with old contentSverre Rabbelier, Jul 16, 2011
  27. 23/23 t5800: point out that deleting branches does not workSverre Rabbelier, Jul 16, 2011
  28. Jeff KingJul 18, 2011
  29. Sverre RabbelierJul 23, 2011

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