Cacheability Improvements

[planet-ucc.git] / update-planet

diff --git a/update-planet b/update-planet
index 91cd899..843c4ce 100755 (executable)
--- a/update-planet
+++ b/update-planet
@@ -28,6 +28,7 @@ for feed in open('feedlist').readlines():
                        sys.stderr.write('DEBUG: update-planet: something went wrong retrieving feed\n')
 
 # step 2: process each feed
+tainted        = False
 blogs  = []
 for feed in feeds:
        # XMLParse2 takes two paramaters, a URL and a CacheObject
@@ -36,11 +37,18 @@ for feed in feeds:
                blog.blogTitle  = feed[0]
                blog.feedURL    = feed[1]
                blogs.append(blog)
+               # check the old copy of the cache, vs the new copy
+               if not feed[2] or not feed[2].cache or not blog or not blog.cache or feed[2].cache != blog.cache:
+                       tainted = True
                # write the cache back down to disk
                cache.storeBlog(blog)
        else:
                pass
 
+if not tainted:
+       sys.stderr.write('PlanetUCC: no objects have changed in the cache, not updating\n')
+       sys.exit(1)
+
 # step 3: sift the feeds
 xmlwriter      = XMLWriter.XMLWriter(blogs)
 
@@ -59,4 +67,3 @@ try:
        codecs.open('rss1.xml', 'wb', 'utf-8').write(xmlwriter.write(RSS1Writer.RSS1Writer))
 except:
        sys.stderr.write('DEBUG: update-planet: could not write rss1.xml, aborting\n')
-       raise