Turn ParserCache into a service, deprecate $parserMemc

[lhc/web/wiklou.git] / maintenance / purgeParserCache.php

diff --git a/maintenance/purgeParserCache.php b/maintenance/purgeParserCache.php
index 9970c1f..da2d850 100644 (file)
--- a/maintenance/purgeParserCache.php
+++ b/maintenance/purgeParserCache.php
@@ -24,6 +24,8 @@
 
 require __DIR__ . '/Maintenance.php';
 
+use MediaWiki\MediaWikiServices;
+
 /**
  * Maintenance script to remove old objects from the parser cache.
  *
@@ -32,6 +34,8 @@ require __DIR__ . '/Maintenance.php';
 class PurgeParserCache extends Maintenance {
        public $lastProgress;
 
+       private $usleep = 0;
+
        function __construct() {
                parent::__construct();
                $this->addDescription( "Remove old objects from the parser cache. " .
@@ -39,36 +43,44 @@ class PurgeParserCache extends Maintenance {
                $this->addOption( 'expiredate', 'Delete objects expiring before this date.', false, true );
                $this->addOption(
                        'age',
-                       'Delete objects created more than this many seconds ago, assuming $wgParserCacheExpireTime ' .
-                               'has been consistent.',
-                       false, true );
+                       'Delete objects created more than this many seconds ago, assuming ' .
+                               '$wgParserCacheExpireTime has remained consistent.',
+                       false,
+                       true );
+               $this->addOption( 'msleep', 'Milliseconds to sleep between purge chunks', false, true );
        }
 
        function execute() {
+               global $wgParserCacheExpireTime;
+
                $inputDate = $this->getOption( 'expiredate' );
                $inputAge = $this->getOption( 'age' );
                if ( $inputDate !== null ) {
                        $date = wfTimestamp( TS_MW, strtotime( $inputDate ) );
                } elseif ( $inputAge !== null ) {
-                       global $wgParserCacheExpireTime;
                        $date = wfTimestamp( TS_MW, time() + $wgParserCacheExpireTime - intval( $inputAge ) );
                } else {
                        $this->error( "Must specify either --expiredate or --age", 1 );
+                       return;
                }
+               $this->usleep = 1e3 * $this->getOption( 'msleep', 0 );
 
                $english = Language::factory( 'en' );
-               $this->output( "Deleting objects expiring before " . $english->timeanddate( $date ) . "\n" );
+               $this->output( "Deleting objects expiring before " .
+                       $english->timeanddate( $date ) . "\n" );
 
-               $pc = wfGetParserCacheStorage();
-               $success = $pc->deleteObjectsExpiringBefore( $date, array( $this, 'showProgress' ) );
+               $pc = MediaWikiServices::getInstance()->getParserCache()->getCacheStorage();
+               $success = $pc->deleteObjectsExpiringBefore( $date, [ $this, 'showProgressAndWait' ] );
                if ( !$success ) {
                        $this->error( "\nCannot purge this kind of parser cache.", 1 );
                }
-               $this->showProgress( 100 );
+               $this->showProgressAndWait( 100 );
                $this->output( "\nDone\n" );
        }
 
-       function showProgress( $percent ) {
+       public function showProgressAndWait( $percent ) {
+               usleep( $this->usleep ); // avoid lag; T150124
+
                $percentString = sprintf( "%.2f", $percent );
                if ( $percentString === $this->lastProgress ) {
                        return;