Track version info, and make available for logging.

setup.py

@@ -25,6 +25,45 @@ from sphinx.setup_command import BuildDoc
 
 from nova.utils import parse_mailmap, str_dict_replace
 
+NOVA_VERSION = ['2011', '1']
+
+VERSIONFILE_DEFAULT_VCS_VERSION = """
+version_info = {"branch_nick": "LOCALBRANCH", "revision_id": "LOCALREVISION"}
+"""
+
+VERSIONFILE_DATA = """
+# below this line automatically generated by setup.py
+
+YEAR = %r
+COUNT = %r
+""" % (NOVA_VERSION[0], NOVA_VERSION[1])
+
+
+VERSIONFILE_DATA += """
+
+def string():
+    return '.'.join([YEAR, COUNT])
+
+
+def vcs_version_string():
+    return "%s:%s" % (version_info['branch_nick'], version_info['revision_id'])
+
+
+def string_with_vcs():
+    return "%s-%s" % (string(), vcs_version_string())
+"""
+
+with open("nova/version.py", 'w') as version_file:
+    if os.path.isdir('.bzr'):
+        vcs_cmd = subprocess.Popen(["bzr", "version-info", "--python"],
+                                   stdout=subprocess.PIPE)
+        vcsversion = vcs_cmd.communicate()[0]
+        version_file.write(vcsversion)
+    else:
+        version_file.write(VERSIONFILE_DEFAULT_VCS_VERSION)
+    version_file.write(VERSIONFILE_DATA)
+
+
 class local_BuildDoc(BuildDoc):
     def run(self):
         for builder in ['html', 'man']: