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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | use MediaWiki\Http\Telemetry; |
| 22 | use MediaWiki\Page\PageReference; |
| 23 | use MediaWiki\Page\PageReferenceValue; |
| 24 | |
| 25 | /** |
| 26 | * Job queue task description base code. |
| 27 | * |
| 28 | * Example usage: |
| 29 | * @code |
| 30 | * $job = new JobSpecification( |
| 31 | * 'null', |
| 32 | * [ 'lives' => 1, 'usleep' => 100, 'pi' => 3.141569 ], |
| 33 | * [ 'removeDuplicates' => 1 ] |
| 34 | * ); |
| 35 | * MediaWikiServices::getInstance()->getJobQueueGroup()->push( $job ) |
| 36 | * @endcode |
| 37 | * |
| 38 | * @since 1.23 |
| 39 | * @ingroup JobQueue |
| 40 | */ |
| 41 | class JobSpecification implements IJobSpecification { |
| 42 | /** @var string */ |
| 43 | protected $type; |
| 44 | |
| 45 | /** @var array Array of job parameters or false if none */ |
| 46 | protected $params; |
| 47 | |
| 48 | /** @var PageReference */ |
| 49 | protected $page; |
| 50 | |
| 51 | /** @var array */ |
| 52 | protected $opts; |
| 53 | |
| 54 | /** |
| 55 | * @param string $type |
| 56 | * @param array $params Map of key/values |
| 57 | * @param array $opts Map of key/values |
| 58 | * 'removeDuplicates' key - whether to remove duplicate jobs |
| 59 | * 'removeDuplicatesIgnoreParams' key - array with parameters to ignore for deduplication |
| 60 | * @param PageReference|null $page |
| 61 | */ |
| 62 | public function __construct( |
| 63 | $type, array $params, array $opts = [], PageReference $page = null |
| 64 | ) { |
| 65 | $params += [ |
| 66 | 'requestId' => Telemetry::getInstance()->getRequestId(), |
| 67 | ]; |
| 68 | $this->validateParams( $params ); |
| 69 | $this->validateParams( $opts ); |
| 70 | |
| 71 | $this->type = $type; |
| 72 | if ( $page ) { |
| 73 | // Make sure JobQueue classes can pull the title from parameters alone |
| 74 | if ( $page->getDBkey() !== '' ) { |
| 75 | $params += [ |
| 76 | 'namespace' => $page->getNamespace(), |
| 77 | 'title' => $page->getDBkey() |
| 78 | ]; |
| 79 | } |
| 80 | } else { |
| 81 | // We aim to remove the page from job specification and all we need |
| 82 | // is namespace/dbkey, so use LOCAL no matter what. |
| 83 | $page = PageReferenceValue::localReference( NS_SPECIAL, 'Badtitle/' . __CLASS__ ); |
| 84 | } |
| 85 | $this->params = $params; |
| 86 | $this->page = $page; |
| 87 | $this->opts = $opts; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @param array $params |
| 92 | */ |
| 93 | protected function validateParams( array $params ) { |
| 94 | foreach ( $params as $p => $v ) { |
| 95 | if ( is_array( $v ) ) { |
| 96 | $this->validateParams( $v ); |
| 97 | } elseif ( !is_scalar( $v ) && $v !== null ) { |
| 98 | throw new UnexpectedValueException( "Job parameter $p is not JSON serializable." ); |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | public function getType() { |
| 104 | return $this->type; |
| 105 | } |
| 106 | |
| 107 | public function getParams() { |
| 108 | return $this->params; |
| 109 | } |
| 110 | |
| 111 | public function getReleaseTimestamp() { |
| 112 | return isset( $this->params['jobReleaseTimestamp'] ) |
| 113 | ? wfTimestampOrNull( TS_UNIX, $this->params['jobReleaseTimestamp'] ) |
| 114 | : null; |
| 115 | } |
| 116 | |
| 117 | public function ignoreDuplicates() { |
| 118 | return !empty( $this->opts['removeDuplicates'] ); |
| 119 | } |
| 120 | |
| 121 | public function getDeduplicationInfo() { |
| 122 | $info = [ |
| 123 | 'type' => $this->getType(), |
| 124 | 'params' => $this->getParams() |
| 125 | ]; |
| 126 | if ( is_array( $info['params'] ) ) { |
| 127 | // Identical jobs with different "root" jobs should count as duplicates |
| 128 | unset( $info['params']['rootJobSignature'] ); |
| 129 | unset( $info['params']['rootJobTimestamp'] ); |
| 130 | // Likewise for jobs with different delay times |
| 131 | unset( $info['params']['jobReleaseTimestamp'] ); |
| 132 | // Identical jobs from different requests should count as duplicates |
| 133 | unset( $info['params']['requestId'] ); |
| 134 | if ( isset( $this->opts['removeDuplicatesIgnoreParams'] ) ) { |
| 135 | foreach ( $this->opts['removeDuplicatesIgnoreParams'] as $field ) { |
| 136 | unset( $info['params'][$field] ); |
| 137 | } |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | return $info; |
| 142 | } |
| 143 | |
| 144 | public function getRootJobParams() { |
| 145 | return [ |
| 146 | 'rootJobSignature' => $this->params['rootJobSignature'] ?? null, |
| 147 | 'rootJobTimestamp' => $this->params['rootJobTimestamp'] ?? null |
| 148 | ]; |
| 149 | } |
| 150 | |
| 151 | public function hasRootJobParams() { |
| 152 | return isset( $this->params['rootJobSignature'] ) |
| 153 | && isset( $this->params['rootJobTimestamp'] ); |
| 154 | } |
| 155 | |
| 156 | public function isRootJob() { |
| 157 | return $this->hasRootJobParams() && !empty( $this->params['rootJobIsSelf'] ); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * @deprecated since 1.41 |
| 162 | * @return array Field/value map that can immediately be serialized |
| 163 | * @since 1.25 |
| 164 | */ |
| 165 | public function toSerializableArray() { |
| 166 | wfDeprecated( __METHOD__, '1.41' ); |
| 167 | return [ |
| 168 | 'type' => $this->type, |
| 169 | 'params' => $this->params, |
| 170 | 'opts' => $this->opts, |
| 171 | 'title' => [ |
| 172 | 'ns' => $this->page->getNamespace(), |
| 173 | 'key' => $this->page->getDBkey() |
| 174 | ] |
| 175 | ]; |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * @param array $map Field/value map |
| 180 | * @return JobSpecification |
| 181 | * @since 1.25 |
| 182 | */ |
| 183 | public static function newFromArray( array $map ) { |
| 184 | return new self( |
| 185 | $map['type'], |
| 186 | $map['params'], |
| 187 | $map['opts'], |
| 188 | PageReferenceValue::localReference( $map['title']['ns'], $map['title']['key'] ) |
| 189 | ); |
| 190 | } |
| 191 | } |