'DoubleRedirectJob' => 'includes/job/DoubleRedirectJob.php',
'EmaillingJob' => 'includes/job/EmaillingJob.php',
'EnotifNotifyJob' => 'includes/job/EnotifNotifyJob.php',
- 'Job' => 'includes/job/JobQueue.php',
+ 'Job' => 'includes/job/Job.php',
'RefreshLinksJob' => 'includes/job/RefreshLinksJob.php',
'RefreshLinksJob2' => 'includes/job/RefreshLinksJob.php',
'UploadFromUrlJob' => 'includes/job/UploadFromUrlJob.php',
--- /dev/null
+<?php
+/**
+ * Job queue base code.
+ *
+ * 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
+ *
+ * @file
+ * @defgroup JobQueue JobQueue
+ */
+
+/**
+ * Class to both describe a background job and handle jobs.
+ *
+ * @ingroup JobQueue
+ */
+abstract class Job {
+
+ /**
+ * @var Title
+ */
+ var $title;
+
+ var $command,
+ $params,
+ $id,
+ $removeDuplicates,
+ $error;
+
+ /*-------------------------------------------------------------------------
+ * Abstract functions
+ *------------------------------------------------------------------------*/
+
+ /**
+ * Run the job
+ * @return boolean success
+ */
+ abstract function run();
+
+ /*-------------------------------------------------------------------------
+ * Static functions
+ *------------------------------------------------------------------------*/
+
+ /**
+ * Pop a job of a certain type. This tries less hard than pop() to
+ * actually find a job; it may be adversely affected by concurrent job
+ * runners.
+ *
+ * @param $type string
+ *
+ * @return Job
+ */
+ static function pop_type( $type ) {
+ wfProfilein( __METHOD__ );
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ $dbw->begin( __METHOD__ );
+
+ $row = $dbw->selectRow(
+ 'job',
+ '*',
+ array( 'job_cmd' => $type ),
+ __METHOD__,
+ array( 'LIMIT' => 1, 'FOR UPDATE' )
+ );
+
+ if ( $row === false ) {
+ $dbw->commit( __METHOD__ );
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+
+ /* Ensure we "own" this row */
+ $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
+ $affected = $dbw->affectedRows();
+ $dbw->commit( __METHOD__ );
+
+ if ( $affected == 0 ) {
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+
+ wfIncrStats( 'job-pop' );
+ $namespace = $row->job_namespace;
+ $dbkey = $row->job_title;
+ $title = Title::makeTitleSafe( $namespace, $dbkey );
+ $job = Job::factory( $row->job_cmd, $title, Job::extractBlob( $row->job_params ),
+ $row->job_id );
+
+ $job->removeDuplicates();
+
+ wfProfileOut( __METHOD__ );
+ return $job;
+ }
+
+ /**
+ * Pop a job off the front of the queue
+ *
+ * @param $offset Integer: Number of jobs to skip
+ * @return Job or false if there's no jobs
+ */
+ static function pop( $offset = 0 ) {
+ wfProfileIn( __METHOD__ );
+
+ $dbr = wfGetDB( DB_SLAVE );
+
+ /* Get a job from the slave, start with an offset,
+ scan full set afterwards, avoid hitting purged rows
+
+ NB: If random fetch previously was used, offset
+ will always be ahead of few entries
+ */
+
+ $conditions = self::defaultQueueConditions();
+
+ $offset = intval( $offset );
+ $options = array( 'ORDER BY' => 'job_id', 'USE INDEX' => 'PRIMARY' );
+
+ $row = $dbr->selectRow( 'job', '*',
+ array_merge( $conditions, array( "job_id >= $offset" ) ),
+ __METHOD__,
+ $options
+ );
+
+ // Refetching without offset is needed as some of job IDs could have had delayed commits
+ // and have lower IDs than jobs already executed, blame concurrency :)
+ //
+ if ( $row === false ) {
+ if ( $offset != 0 ) {
+ $row = $dbr->selectRow( 'job', '*', $conditions, __METHOD__, $options );
+ }
+
+ if ( $row === false ) {
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+ }
+
+ // Try to delete it from the master
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
+ $affected = $dbw->affectedRows();
+ $dbw->commit( __METHOD__ );
+
+ if ( !$affected ) {
+ // Failed, someone else beat us to it
+ // Try getting a random row
+ $row = $dbw->selectRow( 'job', array( 'MIN(job_id) as minjob',
+ 'MAX(job_id) as maxjob' ), '1=1', __METHOD__ );
+ if ( $row === false || is_null( $row->minjob ) || is_null( $row->maxjob ) ) {
+ // No jobs to get
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+ // Get the random row
+ $row = $dbw->selectRow( 'job', '*',
+ 'job_id >= ' . mt_rand( $row->minjob, $row->maxjob ), __METHOD__ );
+ if ( $row === false ) {
+ // Random job gone before we got the chance to select it
+ // Give up
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+ // Delete the random row
+ $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
+ $affected = $dbw->affectedRows();
+ $dbw->commit( __METHOD__ );
+
+ if ( !$affected ) {
+ // Random job gone before we exclusively deleted it
+ // Give up
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+ }
+
+ // If execution got to here, there's a row in $row that has been deleted from the database
+ // by this thread. Hence the concurrent pop was successful.
+ wfIncrStats( 'job-pop' );
+ $namespace = $row->job_namespace;
+ $dbkey = $row->job_title;
+ $title = Title::makeTitleSafe( $namespace, $dbkey );
+
+ if ( is_null( $title ) ) {
+ wfProfileOut( __METHOD__ );
+ return false;
+ }
+
+ $job = Job::factory( $row->job_cmd, $title, Job::extractBlob( $row->job_params ), $row->job_id );
+
+ // Remove any duplicates it may have later in the queue
+ $job->removeDuplicates();
+
+ wfProfileOut( __METHOD__ );
+ return $job;
+ }
+
+ /**
+ * Create the appropriate object to handle a specific job
+ *
+ * @param $command String: Job command
+ * @param $title Title: Associated title
+ * @param $params Array: Job parameters
+ * @param $id Int: Job identifier
+ * @return Job
+ */
+ static function factory( $command, Title $title, $params = false, $id = 0 ) {
+ global $wgJobClasses;
+ if( isset( $wgJobClasses[$command] ) ) {
+ $class = $wgJobClasses[$command];
+ return new $class( $title, $params, $id );
+ }
+ throw new MWException( "Invalid job command `{$command}`" );
+ }
+
+ /**
+ * @param $params
+ * @return string
+ */
+ static function makeBlob( $params ) {
+ if ( $params !== false ) {
+ return serialize( $params );
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * @param $blob
+ * @return bool|mixed
+ */
+ static function extractBlob( $blob ) {
+ if ( (string)$blob !== '' ) {
+ return unserialize( $blob );
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Batch-insert a group of jobs into the queue.
+ * This will be wrapped in a transaction with a forced commit.
+ *
+ * This may add duplicate at insert time, but they will be
+ * removed later on, when the first one is popped.
+ *
+ * @param $jobs array of Job objects
+ */
+ static function batchInsert( $jobs ) {
+ if ( !count( $jobs ) ) {
+ return;
+ }
+ $dbw = wfGetDB( DB_MASTER );
+ $rows = array();
+
+ /**
+ * @var $job Job
+ */
+ foreach ( $jobs as $job ) {
+ $rows[] = $job->insertFields();
+ if ( count( $rows ) >= 50 ) {
+ # Do a small transaction to avoid slave lag
+ $dbw->begin( __METHOD__ );
+ $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
+ $dbw->commit( __METHOD__ );
+ $rows = array();
+ }
+ }
+ if ( $rows ) { // last chunk
+ $dbw->begin( __METHOD__ );
+ $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
+ $dbw->commit( __METHOD__ );
+ }
+ wfIncrStats( 'job-insert', count( $jobs ) );
+ }
+
+ /**
+ * Insert a group of jobs into the queue.
+ *
+ * Same as batchInsert() but does not commit and can thus
+ * be rolled-back as part of a larger transaction. However,
+ * large batches of jobs can cause slave lag.
+ *
+ * @param $jobs array of Job objects
+ */
+ static function safeBatchInsert( $jobs ) {
+ if ( !count( $jobs ) ) {
+ return;
+ }
+ $dbw = wfGetDB( DB_MASTER );
+ $rows = array();
+ foreach ( $jobs as $job ) {
+ $rows[] = $job->insertFields();
+ if ( count( $rows ) >= 500 ) {
+ $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
+ $rows = array();
+ }
+ }
+ if ( $rows ) { // last chunk
+ $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
+ }
+ wfIncrStats( 'job-insert', count( $jobs ) );
+ }
+
+
+ /**
+ * SQL conditions to apply on most JobQueue queries
+ *
+ * Whenever we exclude jobs types from the default queue, we want to make
+ * sure that queries to the job queue actually ignore them.
+ *
+ * @return array SQL conditions suitable for Database:: methods
+ */
+ static function defaultQueueConditions( ) {
+ global $wgJobTypesExcludedFromDefaultQueue;
+ $conditions = array();
+ if ( count( $wgJobTypesExcludedFromDefaultQueue ) > 0 ) {
+ $dbr = wfGetDB( DB_SLAVE );
+ foreach ( $wgJobTypesExcludedFromDefaultQueue as $cmdType ) {
+ $conditions[] = "job_cmd != " . $dbr->addQuotes( $cmdType );
+ }
+ }
+ return $conditions;
+ }
+
+ /*-------------------------------------------------------------------------
+ * Non-static functions
+ *------------------------------------------------------------------------*/
+
+ /**
+ * @param $command
+ * @param $title
+ * @param $params array
+ * @param int $id
+ */
+ function __construct( $command, $title, $params = false, $id = 0 ) {
+ $this->command = $command;
+ $this->title = $title;
+ $this->params = $params;
+ $this->id = $id;
+
+ // A bit of premature generalisation
+ // Oh well, the whole class is premature generalisation really
+ $this->removeDuplicates = true;
+ }
+
+ /**
+ * Insert a single job into the queue.
+ * @return bool true on success
+ */
+ function insert() {
+ $fields = $this->insertFields();
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ if ( $this->removeDuplicates ) {
+ $res = $dbw->select( 'job', array( '1' ), $fields, __METHOD__ );
+ if ( $dbw->numRows( $res ) ) {
+ return true;
+ }
+ }
+ wfIncrStats( 'job-insert' );
+ return $dbw->insert( 'job', $fields, __METHOD__ );
+ }
+
+ /**
+ * @return array
+ */
+ protected function insertFields() {
+ $dbw = wfGetDB( DB_MASTER );
+ return array(
+ 'job_id' => $dbw->nextSequenceValue( 'job_job_id_seq' ),
+ 'job_cmd' => $this->command,
+ 'job_namespace' => $this->title->getNamespace(),
+ 'job_title' => $this->title->getDBkey(),
+ 'job_timestamp' => $dbw->timestamp(),
+ 'job_params' => Job::makeBlob( $this->params )
+ );
+ }
+
+ /**
+ * Remove jobs in the job queue which are duplicates of this job.
+ * This is deadlock-prone and so starts its own transaction.
+ */
+ function removeDuplicates() {
+ if ( !$this->removeDuplicates ) {
+ return;
+ }
+
+ $fields = $this->insertFields();
+ unset( $fields['job_id'] );
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->begin( __METHOD__ );
+ $dbw->delete( 'job', $fields, __METHOD__ );
+ $affected = $dbw->affectedRows();
+ $dbw->commit( __METHOD__ );
+ if ( $affected ) {
+ wfIncrStats( 'job-dup-delete', $affected );
+ }
+ }
+
+ /**
+ * @return string
+ */
+ function toString() {
+ $paramString = '';
+ if ( $this->params ) {
+ foreach ( $this->params as $key => $value ) {
+ if ( $paramString != '' ) {
+ $paramString .= ' ';
+ }
+ $paramString .= "$key=$value";
+ }
+ }
+
+ if ( is_object( $this->title ) ) {
+ $s = "{$this->command} " . $this->title->getPrefixedDBkey();
+ if ( $paramString !== '' ) {
+ $s .= ' ' . $paramString;
+ }
+ return $s;
+ } else {
+ return "{$this->command} $paramString";
+ }
+ }
+
+ protected function setLastError( $error ) {
+ $this->error = $error;
+ }
+
+ function getLastError() {
+ return $this->error;
+ }
+}
+++ /dev/null
-<?php
-/**
- * Job queue base code.
- *
- * 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
- *
- * @file
- * @defgroup JobQueue JobQueue
- */
-
-/**
- * Class to both describe a background job and handle jobs.
- *
- * @ingroup JobQueue
- */
-abstract class Job {
-
- /**
- * @var Title
- */
- var $title;
-
- var $command,
- $params,
- $id,
- $removeDuplicates,
- $error;
-
- /*-------------------------------------------------------------------------
- * Abstract functions
- *------------------------------------------------------------------------*/
-
- /**
- * Run the job
- * @return boolean success
- */
- abstract function run();
-
- /*-------------------------------------------------------------------------
- * Static functions
- *------------------------------------------------------------------------*/
-
- /**
- * Pop a job of a certain type. This tries less hard than pop() to
- * actually find a job; it may be adversely affected by concurrent job
- * runners.
- *
- * @param $type string
- *
- * @return Job
- */
- static function pop_type( $type ) {
- wfProfilein( __METHOD__ );
-
- $dbw = wfGetDB( DB_MASTER );
-
- $dbw->begin( __METHOD__ );
-
- $row = $dbw->selectRow(
- 'job',
- '*',
- array( 'job_cmd' => $type ),
- __METHOD__,
- array( 'LIMIT' => 1, 'FOR UPDATE' )
- );
-
- if ( $row === false ) {
- $dbw->commit( __METHOD__ );
- wfProfileOut( __METHOD__ );
- return false;
- }
-
- /* Ensure we "own" this row */
- $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
- $affected = $dbw->affectedRows();
- $dbw->commit( __METHOD__ );
-
- if ( $affected == 0 ) {
- wfProfileOut( __METHOD__ );
- return false;
- }
-
- wfIncrStats( 'job-pop' );
- $namespace = $row->job_namespace;
- $dbkey = $row->job_title;
- $title = Title::makeTitleSafe( $namespace, $dbkey );
- $job = Job::factory( $row->job_cmd, $title, Job::extractBlob( $row->job_params ),
- $row->job_id );
-
- $job->removeDuplicates();
-
- wfProfileOut( __METHOD__ );
- return $job;
- }
-
- /**
- * Pop a job off the front of the queue
- *
- * @param $offset Integer: Number of jobs to skip
- * @return Job or false if there's no jobs
- */
- static function pop( $offset = 0 ) {
- wfProfileIn( __METHOD__ );
-
- $dbr = wfGetDB( DB_SLAVE );
-
- /* Get a job from the slave, start with an offset,
- scan full set afterwards, avoid hitting purged rows
-
- NB: If random fetch previously was used, offset
- will always be ahead of few entries
- */
-
- $conditions = self::defaultQueueConditions();
-
- $offset = intval( $offset );
- $options = array( 'ORDER BY' => 'job_id', 'USE INDEX' => 'PRIMARY' );
-
- $row = $dbr->selectRow( 'job', '*',
- array_merge( $conditions, array( "job_id >= $offset" ) ),
- __METHOD__,
- $options
- );
-
- // Refetching without offset is needed as some of job IDs could have had delayed commits
- // and have lower IDs than jobs already executed, blame concurrency :)
- //
- if ( $row === false ) {
- if ( $offset != 0 ) {
- $row = $dbr->selectRow( 'job', '*', $conditions, __METHOD__, $options );
- }
-
- if ( $row === false ) {
- wfProfileOut( __METHOD__ );
- return false;
- }
- }
-
- // Try to delete it from the master
- $dbw = wfGetDB( DB_MASTER );
- $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
- $affected = $dbw->affectedRows();
- $dbw->commit( __METHOD__ );
-
- if ( !$affected ) {
- // Failed, someone else beat us to it
- // Try getting a random row
- $row = $dbw->selectRow( 'job', array( 'MIN(job_id) as minjob',
- 'MAX(job_id) as maxjob' ), '1=1', __METHOD__ );
- if ( $row === false || is_null( $row->minjob ) || is_null( $row->maxjob ) ) {
- // No jobs to get
- wfProfileOut( __METHOD__ );
- return false;
- }
- // Get the random row
- $row = $dbw->selectRow( 'job', '*',
- 'job_id >= ' . mt_rand( $row->minjob, $row->maxjob ), __METHOD__ );
- if ( $row === false ) {
- // Random job gone before we got the chance to select it
- // Give up
- wfProfileOut( __METHOD__ );
- return false;
- }
- // Delete the random row
- $dbw->delete( 'job', array( 'job_id' => $row->job_id ), __METHOD__ );
- $affected = $dbw->affectedRows();
- $dbw->commit( __METHOD__ );
-
- if ( !$affected ) {
- // Random job gone before we exclusively deleted it
- // Give up
- wfProfileOut( __METHOD__ );
- return false;
- }
- }
-
- // If execution got to here, there's a row in $row that has been deleted from the database
- // by this thread. Hence the concurrent pop was successful.
- wfIncrStats( 'job-pop' );
- $namespace = $row->job_namespace;
- $dbkey = $row->job_title;
- $title = Title::makeTitleSafe( $namespace, $dbkey );
-
- if ( is_null( $title ) ) {
- wfProfileOut( __METHOD__ );
- return false;
- }
-
- $job = Job::factory( $row->job_cmd, $title, Job::extractBlob( $row->job_params ), $row->job_id );
-
- // Remove any duplicates it may have later in the queue
- $job->removeDuplicates();
-
- wfProfileOut( __METHOD__ );
- return $job;
- }
-
- /**
- * Create the appropriate object to handle a specific job
- *
- * @param $command String: Job command
- * @param $title Title: Associated title
- * @param $params Array: Job parameters
- * @param $id Int: Job identifier
- * @return Job
- */
- static function factory( $command, Title $title, $params = false, $id = 0 ) {
- global $wgJobClasses;
- if( isset( $wgJobClasses[$command] ) ) {
- $class = $wgJobClasses[$command];
- return new $class( $title, $params, $id );
- }
- throw new MWException( "Invalid job command `{$command}`" );
- }
-
- /**
- * @param $params
- * @return string
- */
- static function makeBlob( $params ) {
- if ( $params !== false ) {
- return serialize( $params );
- } else {
- return '';
- }
- }
-
- /**
- * @param $blob
- * @return bool|mixed
- */
- static function extractBlob( $blob ) {
- if ( (string)$blob !== '' ) {
- return unserialize( $blob );
- } else {
- return false;
- }
- }
-
- /**
- * Batch-insert a group of jobs into the queue.
- * This will be wrapped in a transaction with a forced commit.
- *
- * This may add duplicate at insert time, but they will be
- * removed later on, when the first one is popped.
- *
- * @param $jobs array of Job objects
- */
- static function batchInsert( $jobs ) {
- if ( !count( $jobs ) ) {
- return;
- }
- $dbw = wfGetDB( DB_MASTER );
- $rows = array();
-
- /**
- * @var $job Job
- */
- foreach ( $jobs as $job ) {
- $rows[] = $job->insertFields();
- if ( count( $rows ) >= 50 ) {
- # Do a small transaction to avoid slave lag
- $dbw->begin( __METHOD__ );
- $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
- $dbw->commit( __METHOD__ );
- $rows = array();
- }
- }
- if ( $rows ) { // last chunk
- $dbw->begin( __METHOD__ );
- $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
- $dbw->commit( __METHOD__ );
- }
- wfIncrStats( 'job-insert', count( $jobs ) );
- }
-
- /**
- * Insert a group of jobs into the queue.
- *
- * Same as batchInsert() but does not commit and can thus
- * be rolled-back as part of a larger transaction. However,
- * large batches of jobs can cause slave lag.
- *
- * @param $jobs array of Job objects
- */
- static function safeBatchInsert( $jobs ) {
- if ( !count( $jobs ) ) {
- return;
- }
- $dbw = wfGetDB( DB_MASTER );
- $rows = array();
- foreach ( $jobs as $job ) {
- $rows[] = $job->insertFields();
- if ( count( $rows ) >= 500 ) {
- $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
- $rows = array();
- }
- }
- if ( $rows ) { // last chunk
- $dbw->insert( 'job', $rows, __METHOD__, 'IGNORE' );
- }
- wfIncrStats( 'job-insert', count( $jobs ) );
- }
-
-
- /**
- * SQL conditions to apply on most JobQueue queries
- *
- * Whenever we exclude jobs types from the default queue, we want to make
- * sure that queries to the job queue actually ignore them.
- *
- * @return array SQL conditions suitable for Database:: methods
- */
- static function defaultQueueConditions( ) {
- global $wgJobTypesExcludedFromDefaultQueue;
- $conditions = array();
- if ( count( $wgJobTypesExcludedFromDefaultQueue ) > 0 ) {
- $dbr = wfGetDB( DB_SLAVE );
- foreach ( $wgJobTypesExcludedFromDefaultQueue as $cmdType ) {
- $conditions[] = "job_cmd != " . $dbr->addQuotes( $cmdType );
- }
- }
- return $conditions;
- }
-
- /*-------------------------------------------------------------------------
- * Non-static functions
- *------------------------------------------------------------------------*/
-
- /**
- * @param $command
- * @param $title
- * @param $params array
- * @param int $id
- */
- function __construct( $command, $title, $params = false, $id = 0 ) {
- $this->command = $command;
- $this->title = $title;
- $this->params = $params;
- $this->id = $id;
-
- // A bit of premature generalisation
- // Oh well, the whole class is premature generalisation really
- $this->removeDuplicates = true;
- }
-
- /**
- * Insert a single job into the queue.
- * @return bool true on success
- */
- function insert() {
- $fields = $this->insertFields();
-
- $dbw = wfGetDB( DB_MASTER );
-
- if ( $this->removeDuplicates ) {
- $res = $dbw->select( 'job', array( '1' ), $fields, __METHOD__ );
- if ( $dbw->numRows( $res ) ) {
- return true;
- }
- }
- wfIncrStats( 'job-insert' );
- return $dbw->insert( 'job', $fields, __METHOD__ );
- }
-
- /**
- * @return array
- */
- protected function insertFields() {
- $dbw = wfGetDB( DB_MASTER );
- return array(
- 'job_id' => $dbw->nextSequenceValue( 'job_job_id_seq' ),
- 'job_cmd' => $this->command,
- 'job_namespace' => $this->title->getNamespace(),
- 'job_title' => $this->title->getDBkey(),
- 'job_timestamp' => $dbw->timestamp(),
- 'job_params' => Job::makeBlob( $this->params )
- );
- }
-
- /**
- * Remove jobs in the job queue which are duplicates of this job.
- * This is deadlock-prone and so starts its own transaction.
- */
- function removeDuplicates() {
- if ( !$this->removeDuplicates ) {
- return;
- }
-
- $fields = $this->insertFields();
- unset( $fields['job_id'] );
- $dbw = wfGetDB( DB_MASTER );
- $dbw->begin( __METHOD__ );
- $dbw->delete( 'job', $fields, __METHOD__ );
- $affected = $dbw->affectedRows();
- $dbw->commit( __METHOD__ );
- if ( $affected ) {
- wfIncrStats( 'job-dup-delete', $affected );
- }
- }
-
- /**
- * @return string
- */
- function toString() {
- $paramString = '';
- if ( $this->params ) {
- foreach ( $this->params as $key => $value ) {
- if ( $paramString != '' ) {
- $paramString .= ' ';
- }
- $paramString .= "$key=$value";
- }
- }
-
- if ( is_object( $this->title ) ) {
- $s = "{$this->command} " . $this->title->getPrefixedDBkey();
- if ( $paramString !== '' ) {
- $s .= ' ' . $paramString;
- }
- return $s;
- } else {
- return "{$this->command} $paramString";
- }
- }
-
- protected function setLastError( $error ) {
- $this->error = $error;
- }
-
- function getLastError() {
- return $this->error;
- }
-}
dépôts / lhc / web / wiklou.git / commitdiff