Merge lp:~brian-murray/ubuntu-archive-tools/email-from-changes-file into lp:ubuntu-archive-tools

[Brian Murray]

By using the changes file from Launchpad will be able to find an email address for uploaders who have chosen to make their email address private in Launchpad, and subsequently notify them about regressions. This will fix issues like the following:

2014-06-20 17:53:48,152 - INFO - https://launchpad.net/~serge-hallyn has hidden their email addresses
2014-06-20 17:53:48,152 - INFO - no signer email address for trusty cgmanager 0.24-0ubuntu7
2014-06-20 17:53:48,488 - INFO - https://launchpad.net/~arges has hidden their email addresses
2014-06-20 17:53:48,489 - INFO - no signer email address for trusty open-vm-tools 2:9.4.0-1280544-5ubuntu6.2

=== modified file 'phased-updater'
--- phased-updater	2014-06-20 19:18:35 +0000
+++ phased-updater	2014-09-04 20:34:28 +0000
@@ -35,6 +35,7 @@
 import time
 
 from collections import defaultdict, OrderedDict
+from email import utils
 from optparse import OptionParser
 
 import lputils
@@ -251,10 +252,19 @@
             pkg = spph.source_package_name
             version = spph.source_package_version
             if not signer_email:
-                logging.info('no signer email address for %s %s %s' %
+                # if we can't determine their email use the changes file
+                changes_file_url = spph.changesFileUrl()
+                changes_file = urlopen(changes_file_url)
+                for line in changes_file.readlines():
+                    line = line.strip()
+                    if line.startswith('Changed-By:'):
+                        changer = line.lstrip('Changed-By: ')
+                        signer_name, signer_email = utils.parseaddr(changer.strip())
+                        break
+                logging.info("Used changes file to find email for %s %s %s" %
                              (rname, pkg, version))
-                continue
-            signer_name = signer.name
+            else:
+                signer_name = signer.name
             changer = spph.package_creator
             if 'buckets' in spph_buckets[rname][spph]:
                 # see if they've been emailed about the bucket before