commit bc381a412096255db1253d0df890e2bddc19ea37
author Shawn Pearce <sop@google.com> Mon Jun 22 12:17:43 2015 -0700
committer Shawn Pearce <sop@google.com> Mon Jun 22 17:09:45 2015 -0700
tree beb95f80faa172e92b923973cab73e77a54878d8
parent 25d919614e30d86f85f779aee30100ac8210904d

Markdown: optionally ping Google Analytics

If google.analyticsId is defined in gitiles.config the Google
Universal Analytics Web Tracking code will be automatically inserted
into the footer of the page with the specified property ID. This
will trigger an async load of the tracking code, and an async ping
of the page visit.

Change-Id: I0adb1e3f8291f8fcab3bff8eb1847b215c103a9a

gitiles-servlet/src/main/java/com/google/gitiles/doc/DocServlet.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/doc/DocServlet.java b/gitiles-servlet/src/main/java/com/google/gitiles/doc/DocServlet.java
index fb922dd..076ee62 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/doc/DocServlet.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/doc/DocServlet.java
@@ -185,6 +185,11 @@
         .setImageLoader(img)
         .toSoyHtml(doc));
 
+    String analyticsId = cfg.getString("google", null, "analyticsId");
+    if (!Strings.isNullOrEmpty(analyticsId)) {
+      data.put("analyticsId", analyticsId);
+    }
+
     String page = renderer.render(SOY_TEMPLATE, data);
     byte[] raw = page.getBytes(UTF_8);
     res.setContentType(FormatType.HTML.getMimeType());

gitiles-servlet/src/main/resources/com/google/gitiles/templates/Doc.soy

diff --git a/gitiles-servlet/src/main/resources/com/google/gitiles/templates/Doc.soy b/gitiles-servlet/src/main/resources/com/google/gitiles/templates/Doc.soy
index 2d11d97..da475c6 100644
--- a/gitiles-servlet/src/main/resources/com/google/gitiles/templates/Doc.soy
+++ b/gitiles-servlet/src/main/resources/com/google/gitiles/templates/Doc.soy
@@ -20,6 +20,7 @@
  * @param pageTitle h1 title from specific page.
  * @param? logoUrl url of image logo.
  * @param? homeUrl url to jump to top of site.
+ * @param? analyticsId Google Analytics Property ID.
  * @param sourceUrl url for source view of the page.
  * @param logUrl url for log history of page.
  * @param blameUrl url for blame of page source.
@@ -73,6 +74,18 @@
       </div>
     </div>
   </div>
+  {if $analyticsId}
+    /* From https://developers.google.com/analytics/devguides/collection/analyticsjs/ */
+    <script>
+    (function(i,s,o,g,r,a,m){lb}i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){lb}
+    (i[r].q=i[r].q||[]).push(arguments){rb},i[r].l=1*new Date();a=s.createElement(o),
+    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+    {rb})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+    ga('create', '{$analyticsId}', 'auto');
+    ga('send', 'pageview', {lb}title: '{$pageTitle}'{rb});
+    </script>
+  {/if}
 </body>
 </html>
 {/template}