From a76d5d2df41e574f45263fda9d947abb53b830af Mon Sep 17 00:00:00 2001
From: Andy Doan <andy.doan@linaro.org>
Date: Thu, 31 Jul 2014 16:48:51 +0000
Subject: Include deployed version information in page footer

Change-Id: I7f4c61992eff75ef19fa840e6d2d911f4512519a
---
 apps/patchwork/templatetags/pwurl.py |  9 +++++++--
 apps/version.py                      | 19 +++++++++++++++++++
 templates/base.html                  |  4 +++-
 3 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 apps/version.py

diff --git a/apps/patchwork/templatetags/pwurl.py b/apps/patchwork/templatetags/pwurl.py
index 98bc1ca..f3438ca 100644
--- a/apps/patchwork/templatetags/pwurl.py
+++ b/apps/patchwork/templatetags/pwurl.py
@@ -19,15 +19,16 @@
 
 from django import template
 from django.utils.html import escape
-from django.utils.safestring import mark_safe
 from patchwork.filters import filterclasses
-import re
+
+import version
 
 register = template.Library()
 
 # params to preserve across views
 list_params = [ c.param for c in filterclasses ] + ['order', 'page']
 
+
 class ListURLNode(template.defaulttags.URLNode):
     def __init__(self, *args, **kwargs):
         super(ListURLNode, self).__init__(*args, **kwargs)
@@ -74,3 +75,7 @@ def listurl(parser, token):
                 args.append(parser.compile_filter(arg))
     return PatchworkURLNode(bits[1], args, kwargs)
 
+
+@register.filter
+def revno_url(val):
+    return '<a href="%s/%s">%s</a>' % (val, version.VERSION, version.VERSION)
diff --git a/apps/version.py b/apps/version.py
new file mode 100644
index 0000000..e8aca2b
--- /dev/null
+++ b/apps/version.py
@@ -0,0 +1,19 @@
+import re
+import subprocess
+
+VERSION = None
+
+
+def _get_version():
+    '''return either the tag on HEAD or the shortened commit id if not found'''
+    out = subprocess.check_output(['git', 'log', '--format=%h %d', '-1'])
+    version, ref_names = out.split('(')
+    m = re.match(r'.*tag: (\d{4}\.\d{2}.*?),', ref_names)
+    if m:
+        version = m.group(1)
+    return version.strip()
+
+try:
+    VERSION = _get_version()
+except:
+    VERSION = '???'
diff --git a/templates/base.html b/templates/base.html
index e58cea9..4ab5e0b 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -52,7 +52,9 @@
   </div>
   <div id="footer">
    <a href="http://ozlabs.org/~jk/projects/patchwork">patchwork</a>
-   patch tracking system
+   {% autoescape off %}
+   patch tracking system running at {{ "http://git.linaro.org/infrastructure/linaro-patchmetrics.git/commit"|revno_url }}.
+   {% endautoescape %}
   </div>
  </body>
 </html>
-- 
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