Script to purge all pages of a given namespace

diff --git a/maintenance/purgeNamespace.php b/maintenance/purgeNamespace.php
new file mode 100644 (file)
index 0000000..0759ca0
--- /dev/null
+++ b/maintenance/purgeNamespace.php
@@ -0,0 +1,96 @@
+<?php
+/**
+ * Purge squids pages for a given namespace
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @ingroup Maintenance
+ */
+
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
+
+# TODO implements a page_touched condition
+
+class PurgeNamespace extends Maintenance {
+       public function __construct() {
+               $this->mDescription = "Purge squids pages for a given namespace";
+               $this->addOption( "namespace", "Namespace number", true, true );
+               $this->setBatchSize( 100 );
+               parent::__construct();
+       }
+
+       public function execute() {
+               $dbr = wfGetDB( DB_SLAVE );
+               $ns = $dbr->addQuotes( $this->getOption( 'namespace') );
+
+               $result = $dbr->select(
+                       array( 'page' ),
+                       array( 'page_namespace', 'page_title' ),
+                       array( "page_namespace = $ns" ),
+                       __METHOD__,
+                       array( 'ORDER BY' => 'page_id' )
+               );
+
+               $start   = 0;
+               $end = $dbr->numRows( $result );
+               $this->output( "Will purge $end pages from namespace $ns\n" );
+
+               # Do remaining chunk
+               $end += $this->mBatchSize - 1;
+               $blockStart = $start;
+               $blockEnd = $start + $this->mBatchSize - 1;
+
+               while( $blockEnd <= $end ) {
+                       # Select pages we will purge:
+                       $result = $dbr->select(
+                               array( 'page' ),
+                               array( 'page_namespace', 'page_title' ),
+                               array( "page_namespace = $ns" ),
+                               __METHOD__,
+                               array( # conditions
+                                       'ORDER BY' => 'page_id',
+                                       'LIMIT'    => $this->mBatchSize,
+                                       'OFFSET'   => $blockStart,
+                                )
+                       );
+
+                       # Initialize/reset URLs to be purged
+                       $urls = array();
+                       foreach( $result as $row ) {
+                               $title = Title::makeTitle( $row->page_namespace, $row->page_title );
+                               $url = $title->getFullUrl();
+                               $urls[] = $url;
+                       }
+
+                       $this->sendPurgeRequest( $urls );
+
+                       $blockStart += $this->mBatchSize;
+                       $blockEnd   += $this->mBatchSize;
+               }
+
+               $this->output( "Done!\n" );
+       }
+
+       private function sendPurgeRequest( $urls ) {
+               $this->output( "Purging " . count( $urls ). " urls\n" );
+               $u = new SquidUpdate( $urls );
+               $u->doUpdate();
+       }
+}
+
+$maintClass = "PurgeNamespace";
+require_once( RUN_MAINTENANCE_IF_MAIN );
+