Add git changelog method.

Change-Id: I71d99f00b2154bf151a1521016118ba6bd088f79

openstack/common/setup.py

@@ -36,10 +36,13 @@ def parse_mailmap(mailmap='.mailmap'):
     return mapping
 
 
-def str_dict_replace(s, mapping):
-    for s1, s2 in mapping.iteritems():
-        s = s.replace(s1, s2)
-    return s
+def canonicalize_emails(changelog, mapping):
+    """ Takes in a string and an email alias mapping and replaces all
+        instances of the aliases in the string with their real email
+    """
+    for alias, email in mapping.iteritems():
+        changelog = changelog.replace(alias, email)
+    return changelog
 
 
 # Get requirements from the first file that exists
@@ -112,3 +115,13 @@ version_info = {
     'revno': %s
 }
 """ % (branch_nick, revid, revno))
+
+
+def write_git_changelog():
+    """ Write a changelog based on the git changelog """
+    if os.path.isdir('.git'):
+        git_log_cmd = 'git log --stat'
+        changelog = _run_shell_command(git_log_cmd)
+        mailmap = parse_mailmap()
+        with open("ChangeLog", "w") as changelog_file:
+            changelog_file.write(canonicalize_emails(changelog, mailmap))

tests/unit/test_setup.py

@@ -0,0 +1,33 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2011 OpenStack LLC.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import unittest
+
+import mock
+
+from openstack.common import exception
+from openstack.common import utils
+from openstack.common import setup
+
+
+class UtilsTest(unittest.TestCase):
+
+    def test_str_dict_replace(self):
+        string = 'Johnnie T. Hozer'
+        mapping = {'T.': 'The'}
+        self.assertEqual('Johnnie The Hozer',
+                         setup.canonicalize_emails(string, mapping))

tests/unit/test_utils.py

@@ -23,7 +23,6 @@ import mock
 
 from openstack.common import exception
 from openstack.common import utils
-from openstack.common import setup
 
 
 class UtilsTest(unittest.TestCase):
@@ -108,12 +107,6 @@ class UtilsTest(unittest.TestCase):
         self.assertEqual(skynet_self_aware_time,
                          utils.parse_isotime(skynet_self_aware_time_str))
 
-    def test_str_dict_replace(self):
-        string = 'Johnnie T. Hozer'
-        mapping = {'T.': 'The'}
-        self.assertEqual('Johnnie The Hozer',
-                         setup.str_dict_replace(string, mapping))
-
     def test_utcnow(self):
         utils.set_time_override(mock.sentinel.utcnow)
         self.assertEqual(utils.utcnow(), mock.sentinel.utcnow)