Merge lp:~james-w/summit/cache-control into lp:~summit-hackers/summit/1.x

[Nigel Babu]

Send headers to try and avoid the cache on the +temp-meeting-export page.

This stops Launchpad from serving a cached copy, which may be older than the last
one we saw, causing us to delete new blueprints.

We send Cache-Control as a request to do this, and Cookie as that currently makes
Launchpad bypass squid entirely.

Hi,

This branch adds the headers needed from https://bugs.launchpad.net/summit/+bug/849331,

This will stop lpupdate from deleting blueprints from summit, which is nice.

Thanks,

James

[lp:~james-w/summit/cache-control]

147. By James Westby on 2011-09-13

Remove the print statement.

148. By James Westby on 2011-09-13

Also add a Cookie header to bypass squid entirely in Launchpad.

[Nigel Babu (nigelbabu)]

Looks good!

review: Approve

=== modified file 'summit/schedule/models/summitmodel.py'
--- summit/schedule/models/summitmodel.py	2011-07-19 01:30:45 +0000
+++ summit/schedule/models/summitmodel.py	2011-09-13 22:47:29 +0000
@@ -166,8 +166,11 @@
         trycounter = 0
         retrytotal = 5
         while trycounter <= retrytotal:
+            req = urllib2.Request(url)
+            req.add_header("Cache-Control", "no-cache")
+            req.add_header("Cookie", "please-don't-cache-me")
             try:
-                 export = urllib2.urlopen(url)
+                 export = urllib2.urlopen(req)
             except urllib2.HTTPError, e:
                 trycounter += 1
                 if trycounter >= retrytotal: