From e75091503463e159b2235424c07ad9fa475b318d Mon Sep 17 00:00:00 2001
From: davyd <davyd>
Date: Mon, 15 Mar 2004 02:56:52 +0000
Subject: [PATCH] cacheability improvements

---
 CacheHandler.py |  2 ++
 update-planet   | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/CacheHandler.py b/CacheHandler.py
index 3463d71..7106279 100644
--- a/CacheHandler.py
+++ b/CacheHandler.py
@@ -36,3 +36,5 @@ class CacheObject:
 	def __init__(self):
 		self.etag	= None
 		self.date	= None
+	def __eq__(self, other):
+		return self.etag == other.etag and self.date == other.date
diff --git a/update-planet b/update-planet
index 86fc4a8..09c40b0 100755
--- 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 +37,20 @@ 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 feed[2].cache == blog.cache:
+			pass
+		else:
+			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)
 
-- 
2.20.1