Add git vcsversion method.

Leaving in the branch_nick for now - I think we need to go through the
projects using this code and ensure that they aren't going to get screwed
before we remove it.

Change-Id: Ib91b5af050244f44cd811ca47cb6e2c53ef74ddb

1 files changed, 27 insertions, 0 deletions

diff --git a/openstack/common/setup.py b/openstack/common/setup.py
index 28f5e6f..34c88e5 100644
--- a/openstack/common/setup.py
+++ b/openstack/common/setup.py
@@ -85,3 +85,30 @@ def write_requirements():
                                       stdout=subprocess.PIPE)
             requirements = output.communicate()[0].strip()
             req_file.write(requirements)
+
+
+def _run_shell_command(cmd):
+    output = subprocess.Popen(["/bin/sh", "-c", cmd],
+                              stdout=subprocess.PIPE)
+    return output.communicate()[0].strip()
+
+
+def write_vcsversion(location):
+    """ Produce a vcsversion dict that mimics the old one produced by bzr
+    """
+    if os.path.isdir('.git'):
+        branch_nick_cmd = 'git branch | grep -Ei "\* (.*)" | cut -f2 -d" "'
+        branch_nick = _run_shell_command(branch_nick_cmd)
+        revid_cmd = "git rev-parse HEAD"
+        revid = _run_shell_command(revid_cmd).split()[0]
+        revno_cmd = "git log --oneline | wc -l"
+        revno = _run_shell_command(revno_cmd)
+        with open(location, 'w') as version_file:
+            version_file.write("""
+# This file is automatically generated by setup.py, So don't edit it. :)
+version_info = {
+    'branch_nick': '%s',
+    'revision_id': '%s',
+    'revno': %s
+}
+""" % (branch_nick, revid, revno))