Add a new tool to help find the latest versions

As we will be switching to pinning versions in Kolla this tool will
help remove the 'manual' part of that equation by looking up the
versions we want.

The idea would be to eventually turn this into an autoproposal bot so
we only ever need to approve changes.

More work can be done here like automatically updating the
kolla-build.conf

Co-Authored-By: Martin André <m.andre@redhat.com>
Partially-Implements: blueprint upgrade-kolla

Change-Id: I052159850b2579ca6db79be71672be382be8a3a3

requirements.txt

@@ -9,3 +9,5 @@ GitPython>=1.0.1 # BSD License (3 clause)
 six>=1.9.0 # MIT
 oslo.config>=3.7.0 # Apache-2.0
 graphviz>=0.4.0 # MIT License
+beautifulsoup4 # MIT
+setuptools>=16.0 # PSF/ZPL

tools/version_check.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+
+# 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 collections
+import re
+import sys
+
+from bs4 import BeautifulSoup as bs
+from oslo_config import cfg
+import pkg_resources
+import requests
+
+from kolla.common import config as common_config
+
+
+# Use an OrderedDict to ensure the results are displayed alphabetically
+MAJOR_VERSIONS_MAP = collections.OrderedDict([
+    ('ceilometer', 5),
+    ('cinder', 7),
+    ('designate', 1),
+    ('glance', 11),
+    ('gnocchi', 1),
+    ('heat', 5),
+    ('horizon', 8),
+    ('ironic', 4),
+    ('keystone', 8),
+    ('magnum', 1),
+    ('murano', 1),
+    ('neutron', 7),
+    ('nova', 12),
+    ('swift', 2),
+    ('zaqar', 1)
+])
+
+TARBALLS_BASE_URL = 'http://tarballs.openstack.org'
+VERSIONS = dict()
+
+
+def retrieve_upstream_versions():
+    upstream_versions = dict()
+    for project in MAJOR_VERSIONS_MAP:
+        winner = None
+        series = MAJOR_VERSIONS_MAP[project]
+        base = '{}/{}'.format(TARBALLS_BASE_URL, project)
+        r = requests.get(base)
+        s = bs(r.text, 'html.parser')
+
+        for link in s.find_all('a'):
+            version = link.get('href')
+            if (version.endswith('.tar.gz') and
+                    version.startswith('{}-{}'.format(project, series))):
+                split = '{}-|.tar.gz'.format(project)
+                candidate = re.split(split, version)[1]
+                if not winner or more_recent(candidate, winner):
+                    winner = candidate
+
+        if not winner:
+            print('Could not find version for {}'.format(project))
+            continue
+
+        upstream_versions[project] = winner
+
+    VERSIONS['upstream'] = upstream_versions
+
+
+def retrieve_local_versions(conf):
+    local_versions = dict()
+    for project in MAJOR_VERSIONS_MAP:
+        series = MAJOR_VERSIONS_MAP[project]
+        for project_section in [match.group(0) for match in
+                                (re.search('^{}(?:-base)?$'.format(project),
+                                           section) for section in
+                                 conf._groups) if match]:
+            archive = conf[project_section]['location'].split('/')[-1]
+            if (archive.endswith('.tar.gz') and
+                    archive.startswith('{}-{}'.format(project, series))):
+                split = '{}-|.tar.gz'.format(project)
+                local_versions[project] = re.split(split, archive)[1]
+
+    VERSIONS['local'] = local_versions
+
+
+def more_recent(candidate, reference):
+    return pkg_resources.parse_version(candidate) > \
+        pkg_resources.parse_version(reference)
+
+
+def diff_link(project, old_ref, new_ref):
+    return "https://github.com/openstack/{}/compare/{}...{}".format(
+        project, old_ref, new_ref)
+
+
+def compare_versions():
+    up_to_date = True
+    for project in VERSIONS['upstream']:
+        if project in VERSIONS['local']:
+            upstream_version = VERSIONS['upstream'][project]
+            local_version = VERSIONS['local'][project]
+            if more_recent(upstream_version, local_version):
+                print("{} has newer version {} > {}, see diff at {}".format(
+                    project, upstream_version, local_version,
+                    diff_link(project, local_version, upstream_version)))
+                up_to_date = False
+    if up_to_date:
+        print("Everything is up to date")
+
+
+def main():
+    conf = cfg.ConfigOpts()
+    common_config.parse(conf, sys.argv[1:], prog='kolla-build')
+
+    retrieve_upstream_versions()
+    retrieve_local_versions(conf)
+
+    compare_versions()
+
+if __name__ == '__main__':
+    main()