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<?php |
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/** |
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* Send purge requests for listed pages to squid |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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* @ingroup Maintenance |
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*/ |
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require_once __DIR__ . '/Maintenance.php'; |
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/** |
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* Maintenance script that sends purge requests for listed pages to squid. |
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* |
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* @ingroup Maintenance |
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*/ |
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class PurgeList extends Maintenance { |
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View Code Duplication |
public function __construct() { |
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parent::__construct(); |
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$this->addDescription( 'Send purge requests for listed pages to squid' ); |
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$this->addOption( 'purge', 'Whether to update page_touched.', false, false ); |
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$this->addOption( 'namespace', 'Namespace number', false, true ); |
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$this->addOption( 'all', 'Purge all pages', false, false ); |
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$this->addOption( 'delay', 'Number of seconds to delay between each purge', false, true ); |
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$this->addOption( 'verbose', 'Show more output', false, false, 'v' ); |
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$this->setBatchSize( 100 ); |
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} |
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public function execute() { |
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if ( $this->hasOption( 'all' ) ) { |
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$this->purgeNamespace( false ); |
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} elseif ( $this->hasOption( 'namespace' ) ) { |
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$this->purgeNamespace( intval( $this->getOption( 'namespace' ) ) ); |
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} else { |
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$this->doPurge(); |
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} |
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$this->output( "Done!\n" ); |
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} |
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/** |
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* Purge URL coming from stdin |
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*/ |
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private function doPurge() { |
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$stdin = $this->getStdin(); |
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$urls = []; |
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while ( !feof( $stdin ) ) { |
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$page = trim( fgets( $stdin ) ); |
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if ( preg_match( '%^https?://%', $page ) ) { |
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$urls[] = $page; |
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} elseif ( $page !== '' ) { |
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$title = Title::newFromText( $page ); |
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if ( $title ) { |
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$url = $title->getInternalURL(); |
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$this->output( "$url\n" ); |
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$urls[] = $url; |
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if ( $this->getOption( 'purge' ) ) { |
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$title->invalidateCache(); |
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} |
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} else { |
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$this->output( "(Invalid title '$page')\n" ); |
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} |
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} |
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} |
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$this->output( "Purging " . count( $urls ) . " urls\n" ); |
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$this->sendPurgeRequest( $urls ); |
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} |
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/** |
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* Purge a namespace or all pages |
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* |
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* @param int|bool $namespace |
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*/ |
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private function purgeNamespace( $namespace = false ) { |
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$dbr = $this->getDB( DB_REPLICA ); |
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$startId = 0; |
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if ( $namespace === false ) { |
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$conds = []; |
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} else { |
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$conds = [ 'page_namespace' => $namespace ]; |
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} |
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while ( true ) { |
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$res = $dbr->select( 'page', |
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[ 'page_id', 'page_namespace', 'page_title' ], |
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$conds + [ 'page_id > ' . $dbr->addQuotes( $startId ) ], |
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__METHOD__, |
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[ |
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'LIMIT' => $this->mBatchSize, |
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'ORDER BY' => 'page_id' |
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] |
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); |
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if ( !$res->numRows() ) { |
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break; |
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} |
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$urls = []; |
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View Code Duplication |
foreach ( $res as $row ) { |
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$title = Title::makeTitle( $row->page_namespace, $row->page_title ); |
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$url = $title->getInternalURL(); |
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$urls[] = $url; |
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$startId = $row->page_id; |
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} |
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$this->sendPurgeRequest( $urls ); |
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} |
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} |
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/** |
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* Helper to purge an array of $urls |
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* @param array $urls List of URLS to purge from squids |
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*/ |
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private function sendPurgeRequest( $urls ) { |
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if ( $this->hasOption( 'delay' ) ) { |
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$delay = floatval( $this->getOption( 'delay' ) ); |
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foreach ( $urls as $url ) { |
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if ( $this->hasOption( 'verbose' ) ) { |
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$this->output( $url . "\n" ); |
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} |
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$u = new CdnCacheUpdate( [ $url ] ); |
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$u->doUpdate(); |
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usleep( $delay * 1e6 ); |
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} |
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} else { |
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if ( $this->hasOption( 'verbose' ) ) { |
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$this->output( implode( "\n", $urls ) . "\n" ); |
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} |
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$u = new CdnCacheUpdate( $urls ); |
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$u->doUpdate(); |
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} |
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} |
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} |
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$maintClass = "PurgeList"; |
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require_once RUN_MAINTENANCE_IF_MAIN; |
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wikimedia /
mediawiki
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.