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JobSpecification.php
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JobSpecification.php
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<?php
/**
* 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
*/
use MediaWiki\Http\Telemetry;
use MediaWiki\Page\PageReference;
use MediaWiki\Page\PageReferenceValue;
/**
* Job queue task description base code.
*
* Example usage:
* @code
* $job = new JobSpecification(
* 'null',
* [ 'lives' => 1, 'usleep' => 100, 'pi' => 3.141569 ],
* [ 'removeDuplicates' => 1 ]
* );
* MediaWikiServices::getInstance()->getJobQueueGroup()->push( $job )
* @endcode
*
* @newable
* @since 1.23
* @ingroup JobQueue
*/
class JobSpecification implements IJobSpecification {
/** @var string */
protected $type;
/** @var array Array of job parameters or false if none */
protected $params;
/** @var PageReference */
protected $page;
/** @var array */
protected $opts;
/**
* @param string $type
* @param array $params Map of key/values
* @param array $opts Map of key/values
* 'removeDuplicates' key - whether to remove duplicate jobs
* 'removeDuplicatesIgnoreParams' key - array with parameters to ignore for deduplication
* @param PageReference|null $page
*/
public function __construct(
$type, array $params, array $opts = [], ?PageReference $page = null
) {
$params += [
'requestId' => Telemetry::getInstance()->getRequestId(),
];
$this->validateParams( $params );
$this->validateParams( $opts );
$this->type = $type;
if ( $page ) {
// Make sure JobQueue classes can pull the title from parameters alone
if ( $page->getDBkey() !== '' ) {
$params += [
'namespace' => $page->getNamespace(),
'title' => $page->getDBkey()
];
}
} else {
// We aim to remove the page from job specification and all we need
// is namespace/dbkey, so use LOCAL no matter what.
$page = PageReferenceValue::localReference( NS_SPECIAL, 'Badtitle/' . __CLASS__ );
}
$this->params = $params;
$this->page = $page;
$this->opts = $opts;
}
/**
* @param array $params
*/
protected function validateParams( array $params ) {
foreach ( $params as $p => $v ) {
if ( is_array( $v ) ) {
$this->validateParams( $v );
} elseif ( !is_scalar( $v ) && $v !== null ) {
throw new UnexpectedValueException( "Job parameter $p is not JSON serializable." );
}
}
}
public function getType() {
return $this->type;
}
public function getParams() {
return $this->params;
}
public function getReleaseTimestamp() {
return isset( $this->params['jobReleaseTimestamp'] )
? wfTimestampOrNull( TS_UNIX, $this->params['jobReleaseTimestamp'] )
: null;
}
public function ignoreDuplicates() {
return !empty( $this->opts['removeDuplicates'] );
}
public function getDeduplicationInfo() {
$info = [
'type' => $this->getType(),
'params' => $this->getParams()
];
if ( is_array( $info['params'] ) ) {
// Identical jobs with different "root" jobs should count as duplicates
unset( $info['params']['rootJobSignature'] );
unset( $info['params']['rootJobTimestamp'] );
// Likewise for jobs with different delay times
unset( $info['params']['jobReleaseTimestamp'] );
// Identical jobs from different requests should count as duplicates
unset( $info['params']['requestId'] );
if ( isset( $this->opts['removeDuplicatesIgnoreParams'] ) ) {
foreach ( $this->opts['removeDuplicatesIgnoreParams'] as $field ) {
unset( $info['params'][$field] );
}
}
}
return $info;
}
public function getRootJobParams() {
return [
'rootJobSignature' => $this->params['rootJobSignature'] ?? null,
'rootJobTimestamp' => $this->params['rootJobTimestamp'] ?? null
];
}
public function hasRootJobParams() {
return isset( $this->params['rootJobSignature'] )
&& isset( $this->params['rootJobTimestamp'] );
}
public function isRootJob() {
return $this->hasRootJobParams() && !empty( $this->params['rootJobIsSelf'] );
}
/**
* @deprecated since 1.41
* @return array Field/value map that can immediately be serialized
* @since 1.25
*/
public function toSerializableArray() {
wfDeprecated( __METHOD__, '1.41' );
return [
'type' => $this->type,
'params' => $this->params,
'opts' => $this->opts,
'title' => [
'ns' => $this->page->getNamespace(),
'key' => $this->page->getDBkey()
]
];
}
/**
* @param array $map Field/value map
* @return JobSpecification
* @since 1.25
*/
public static function newFromArray( array $map ) {
return new self(
$map['type'],
$map['params'],
$map['opts'],
PageReferenceValue::localReference( $map['title']['ns'], $map['title']['key'] )
);
}
}

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Wed, Aug 19, 04:27 (2 d, 13 h ago)
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JobSpecification.php (5 KB)

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