Show version number next to copyright in QE

Fixes #672

endpoints/common.py

@@ -3,6 +3,7 @@ import json
 import string
 import datetime
 import os
+import re
 
 # Register the various exceptions via decorators.
 import endpoints.decorated
@@ -11,6 +12,7 @@ from flask import make_response, render_template, request, abort, session
 from flask.ext.login import login_user
 from flask.ext.principal import identity_changed
 from random import SystemRandom
+from cachetools import lru_cache
 
 from data import model
 from app import app, oauth_apps, LoginWrappedDBUser
@@ -129,6 +131,14 @@ def list_files(path, extension):
   filepath = 'static/' + path
   return [join_path(dp, f) for dp, dn, files in os.walk(filepath) for f in files if matches(f)]
 
+@lru_cache(maxsize=1)
+def _get_version_number():
+  try:
+    with open('CHANGELOG.md') as f:
+      return re.search('(v[0-9]+\.[0-9]+\.[0-9]+)', f.readline()).group(0)
+  except IOError:
+    return ''
+
 def render_page_template(name, **kwargs):
   debugging = app.config.get('DEBUGGING', False)
   if debugging:
@@ -172,6 +182,10 @@ def render_page_template(name, **kwargs):
   if len(app.config.get('CONTACT_INFO', [])) == 1:
     contact_href = app.config['CONTACT_INFO'][0]
 
+  version_number = ''
+  if not features.BILLING:
+    version_number = ' - ' + _get_version_number()
+
   resp = make_response(render_template(name,
                                        route_data=json.dumps(get_route_data()),
                                        external_styles=external_styles,
@@ -194,7 +208,8 @@ def render_page_template(name, **kwargs):
                                        contact_href=contact_href,
                                        hostname=app.config['SERVER_HOSTNAME'],
                                        preferred_scheme=app.config['PREFERRED_URL_SCHEME'],
-                                       **kwargs))
+                                       version_number=version_number,
+                                        **kwargs))
 
   resp.headers['X-FRAME-OPTIONS'] = 'DENY'
   return resp

templates/base.html

@@ -106,7 +106,7 @@ mixpanel.init("{{ mixpanel_key }}", { track_pageview : false, debug: {{ is_debug
     <nav id="co-l-footer" class="page-footer hidden-xs">
       <div class="col-md-8">
         <ul>
-          <li><span class="copyright">&copy;2015 CoreOS, Inc.</span></li>
+          <li><span class="copyright">&copy;2016 CoreOS, Inc. {{ version_number }}</span></li>
           <li quay-require="['BILLING']"><a href="/tos" target="_self">Terms</a></li>
           <li quay-require="['BILLING']"><a href="/privacy" target="_self">Privacy</a></li>
           <li quay-require="['BILLING']"><a href="/security/" target="_self">Security</a></li>