From 6649743e0bb81e9f22771687acdbd657bac6c4ff Mon Sep 17 00:00:00 2001
From: Alexandre Emsenhuber <ialex@users.mediawiki.org>
Date: Fri, 28 Aug 2009 18:04:40 +0000
Subject: [PATCH] * (bug 19055) maintenance/rebuildrecentchanges.php now purges
 Special:Recentchanges's RSS and Atom feed cache Purging cache timestamps
 should be sufficient since it won't allow cached versions to be used. Also
 fix some errors in docs/memcached.txt. Based on a patch by Jidanni -
 http://bug-attachment.wikimedia.org/attachment.cgi?id=6187

---
 RELEASE-NOTES                        |  2 ++
 docs/memcached.txt                   |  9 ++++++---
 maintenance/rebuildrecentchanges.php | 15 +++++++++++++++
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 62995f3d8b..166b51680b 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -434,6 +434,8 @@ this. Was used when mwEmbed was going to be an extension.
   Special:RevisionDelete are no more displayed when when doing log suppression
 * (bug 8143) Localised parser function names are now correctly case insensitive
   if they contain non-ASCII characters
+* (bug 19055) maintenance/rebuildrecentchanges.php now purges
+  Special:Recentchanges's RSS and Atom feed cache
 
 == API changes in 1.16 ==
 
diff --git a/docs/memcached.txt b/docs/memcached.txt
index 632511f32a..da6add66f2 100644
--- a/docs/memcached.txt
+++ b/docs/memcached.txt
@@ -219,12 +219,15 @@ Special:Allpages:
 
 Special:Recentchanges (feed):
 	stored in: $messageMemc
-	key: $wgDBname:rcfeed:$format:limit:$imit:minor:$hideminor and
+	key: $wgDBname:rcfeed:$format:$limit:$hideminor:$target and
 		rcfeed:$format:timestamp
-	ex: wikidb:rcfeed:rss:limit:50:minor:0 and rcfeed:rss:timestamp
+	ex: wikidb:rcfeed:rss:50:: and rcfeed:rss:timestamp
 	stores: xml output of feed
 	expiry: one day
-	clear by: calling Special:Recentchanges?action=purge
+	clear by: maintenance/rebuildrecentchanges.php script, or
+	calling Special:Recentchanges?action=purge&feed=rss,
+	Special:Recentchanges?action=purge&feed=atom,
+	but note need $wgGroupPermissions[...]['purge'] permission.
 
 Statistics:
 	controlled by: $wgStatsMethod
diff --git a/maintenance/rebuildrecentchanges.php b/maintenance/rebuildrecentchanges.php
index be707a7d71..4bfb08a73b 100644
--- a/maintenance/rebuildrecentchanges.php
+++ b/maintenance/rebuildrecentchanges.php
@@ -37,6 +37,7 @@ class RebuildRecentchanges extends Maintenance {
 		$this->rebuildRecentChangesTablePass2();
 		$this->rebuildRecentChangesTablePass3();
 		$this->rebuildRecentChangesTablePass4();
+		$this->purgeFeeds();
 		$this->output( "Done.\n" );
 	}
 
@@ -272,6 +273,20 @@ class RebuildRecentchanges extends Maintenance {
 	
 		$dbw->freeResult( $res );
 	}
+
+	/**
+	 * Purge cached feeds in $messageMemc
+	 */
+	private function purgeFeeds() {
+		global $wgFeedClasses, $messageMemc;
+
+		$this->output( "Deleting feed timestamps.\n" );
+
+		foreach( $wgFeedClasses as $feed => $className ) {
+			$messageMemc->delete( wfMemcKey( 'rcfeed', $feed, 'timestamp' ) ); # Good enough for now.
+		}
+	}
+
 }
 
 $maintClass = "RebuildRecentchanges";
-- 
2.20.1