Fix versioning code

Removed cruft from OpenStack common versioning code that was removed.
Added optional git SHA information if module is available. The
intent is to have the additional git revision reported only when FINAL
is set to False.

Change-Id: Iae94b84027e7428cd394726e07845d2bad631586
Signed-off-by: Jeff Peeler <jpeeler@redhat.com>

heat/service.py

@@ -116,7 +116,7 @@ class Service(object):
         self.timers = []
 
     def start(self):
-        vcs_string = version.version_string_with_vcs()
+        vcs_string = version.version_string(type='long')
         LOG.info(_('Starting %(topic)s node (version %(vcs_string)s)'),
                   {'topic': self.topic, 'vcs_string': vcs_string})
         # TODO do we need this ? -> utils.cleanup_file_locks()

heat/version.py

@@ -13,33 +13,52 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+
 try:
-    from heat.vcsversion import version_info
+    import git
 except ImportError:
-    version_info = {'branch_nick': u'LOCALBRANCH',
-                    'revision_id': 'LOCALREVISION',
-                    'revno': 0}
+    git = None
 
-HEAT_VERSION = ['7']
-REVISION = HEAT_VERSION
+try:
+    from heat.vcsversion import version_info
+except ImportError:
+    version_info = {'sha': ''}
 
+HEAT_VERSION = '7'
 FINAL = False   # This becomes true at Release Candidate time
 
 
-def canonical_version_string():
-    return '.'.join(filter(None, HEAT_VERSION))
+def get_git_sha():
+    if not git:
+        return version_info['sha']
+
+    try:
+        repo = git.Repo('.')
+    except InvalidGitRepositoryError:
+        return version_info['sha']
+    return repo.head.commit.hexsha
 
 
-def version_string():
-    if FINAL:
-        return canonical_version_string()
-    else:
-        return '%s-dev' % (canonical_version_string(),)
+def write_git_sha():
+    if not git:
+        return
 
+    sha = get_git_sha()
 
-def vcs_version_string():
-    return "%s:%s" % (version_info['branch_nick'], version_info['revision_id'])
+    if sha:
+        with open('heat/vcsversion.py', 'w') as version_file:
+            version_file.write("""
+# This file is automatically generated by heat's setup.py, so don't edit it. :)
+version_info = {
+    'sha': '%s'
+}
+""" % (sha))
 
 
-def version_string_with_vcs():
-    return "%s-%s" % (canonical_version_string(), vcs_version_string())
+def version_string(type='short'):
+    version = HEAT_VERSION
+    if not FINAL:
+        version += '-dev ' + get_git_sha()
+    elif type != 'short':
+        version += ' ' + get_git_sha()
+    return version

setup.py

@@ -21,12 +21,12 @@ import setuptools
 
 from heat.openstack.common import setup
 
-# import this after write_vcsversion because version imports vcsversion
 from heat import version
+version.write_git_sha()
 
 setuptools.setup(
     name='heat',
-    version=version.canonical_version_string(),
+    version=version.HEAT_VERSION,
     description='The heat project provides services for provisioning '
                 'virtual machines',
     license='Apache License (2.0)',