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| 1 | <?php |
| 2 | /** |
| 3 | * Run a single job from a definition passed from stdin |
| 4 | * |
| 5 | * Take a jobqueue-style job definition encoded as JSON as an input |
| 6 | * via stdin and execute it using a jobexecutor in the same style as |
| 7 | * rpc/RunSingleJob.php does on jobrunner hosts. This script can be |
| 8 | * used to run any one-off job and might be useful for testing the |
| 9 | * execution or rerunning of single jobs but is primarily designed for |
| 10 | * use with mercurius in videoscaling tasks. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License along |
| 23 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 24 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 25 | * http://www.gnu.org/copyleft/gpl.html |
| 26 | * |
| 27 | * @file |
| 28 | * @ingroup Maintenance |
| 29 | * @author Hugh Nowlan <hnowlan@wikimedia.org> |
| 30 | */ |
| 31 | |
| 32 | namespace MediaWiki\Extensions\EventBus\Maintenance; |
| 33 | |
| 34 | // @codeCoverageIgnoreStart |
| 35 | $IP = getenv( 'MW_INSTALL_PATH' ); |
| 36 | if ( $IP === false ) { |
| 37 | $IP = __DIR__ . '/../../..'; |
| 38 | } |
| 39 | require_once "$IP/maintenance/Maintenance.php"; |
| 40 | // @codeCoverageIgnoreEnd |
| 41 | |
| 42 | use Exception; |
| 43 | use MediaWiki\Extension\EventBus\JobExecutor; |
| 44 | use MediaWiki\Maintenance\Maintenance; |
| 45 | |
| 46 | class RunSingleJobStdin extends Maintenance { |
| 47 | |
| 48 | public function __construct() { |
| 49 | parent::__construct(); |
| 50 | $this->addDescription( 'Run a single job from stdin' ); |
| 51 | } |
| 52 | |
| 53 | public function execute() { |
| 54 | $input = file_get_contents( "php://stdin" ); |
| 55 | if ( $input === '' ) { |
| 56 | $this->fatalError( 'No event received.' ); |
| 57 | } |
| 58 | |
| 59 | $event_data = json_decode( $input, true ); |
| 60 | |
| 61 | if ( !isset( $event_data['database'] ) ) { |
| 62 | $this->fatalError( 'Invalid event received - database field is missing!' ); |
| 63 | } |
| 64 | |
| 65 | $executor = new JobExecutor(); |
| 66 | try { |
| 67 | $response = $executor->execute( $event_data ); |
| 68 | if ( $response['status'] === true ) { |
| 69 | $this->output( "Job executed successfully: {$response['message']}\n" ); |
| 70 | } else { |
| 71 | if ( $response['readonly'] ) { |
| 72 | // TODO - T204154 |
| 73 | // if we detect that the DB is in read-only mode, we delay the return of the |
| 74 | // response to keep request rate low |
| 75 | $this->output( "Sleeping due to readonly response from executor" ); |
| 76 | sleep( rand( 40, 45 ) ); |
| 77 | } |
| 78 | $this->fatalError( "Failed to execute job on {$event_data['database']}: {$response['message']}" ); |
| 79 | } |
| 80 | } catch ( Exception $e ) { |
| 81 | $this->fatalError( "Caught exception when executing event for {$event_data['database']}: " . |
| 82 | get_class( $e ) . ": {$e->getMessage()}\n" . $e->getTraceAsString() ); |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | // @codeCoverageIgnoreStart |
| 88 | $maintClass = RunSingleJobStdin::class; |
| 89 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 90 | // @codeCoverageIgnoreEnd |