* (bug 3410) Fixing script to delete stale memcached entries

diff --git a/maintenance/deleteImageMemcached.php b/maintenance/deleteImageMemcached.php
new file mode 100644 (file)
index 0000000..2de04ce
--- /dev/null
+++ b/maintenance/deleteImageMemcached.php
@@ -0,0 +1,57 @@
+<?php
+// php deleteImageMemcached.php --until "2003-09-04 04:40:00" --wait 500
+$optionsWithArgs = array( 'until', 'sleep', 'report' );
+
+require_once 'commandLine.inc';
+
+class DeleteImageCache {
+       var $until, $sleep, $report;
+
+       function DeleteImageCache( $until, $sleep, $report ) {
+               $this->until = $until;
+               $this->sleep = $sleep;
+               $this->report = $report;
+       }
+       
+       function main() {
+               global $wgMemc, $wgDBname;
+               $fname = 'DeleteImageCache::main';
+               
+               $dbr =& wfGetDB( DB_SLAVE );
+               
+               $res = $dbr->select( 'image',
+                       array( 'img_name' ),
+                       array( "img_timestamp < {$this->until}" ),
+                       $fname
+               );
+
+               $i = 0;
+               $total = $this->getImageCount();
+
+               while ( $row = $dbr->fetchObject( $res ) ) {
+                       if ($i % $this->report == 0)
+                               printf("%s: %13s done (%s)\n", $wgDBname, "$i/$total", wfPercent( $i / $total * 100 ));
+                       $md5 = md5( $row->img_name );
+                       $wgMemc->delete( "$wgDBname:Image:$md5" );
+                       
+                       if ($this->sleep != 0)
+                               usleep( $this->sleep );
+
+                       ++$i;
+               }
+       }
+       
+       function getImageCount() {
+               $fname = 'DeleteImageCache::getImageCount';
+
+               $dbr =& wfGetDB( DB_SLAVE );
+               return $dbr->selectField( 'image', 'COUNT(*)', array(), $fname );
+       }
+}
+
+$until = preg_replace( "/[^\d]/", '', $options['until'] );
+$sleep = (int)$options['sleep'] * 1000; // milliseconds
+$report = (int)$options['report'];
+
+$dic = new DeleteImageCache( $until, $sleep, $report );
+$dic->main();