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| DatabaseLag | |
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| 1 | <?php |
| 2 | /** |
| 3 | * Shows database lag |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup Maintenance |
| 22 | */ |
| 23 | |
| 24 | use MediaWiki\Maintenance\Maintenance; |
| 25 | |
| 26 | // @codeCoverageIgnoreStart |
| 27 | require_once __DIR__ . '/Maintenance.php'; |
| 28 | // @codeCoverageIgnoreEnd |
| 29 | |
| 30 | /** |
| 31 | * Maintenance script to show database lag. |
| 32 | * |
| 33 | * @ingroup Maintenance |
| 34 | */ |
| 35 | class DatabaseLag extends Maintenance { |
| 36 | |
| 37 | /** @var bool */ |
| 38 | protected $stopReporting = false; |
| 39 | |
| 40 | public function __construct() { |
| 41 | parent::__construct(); |
| 42 | $this->addDescription( 'Shows database lag' ); |
| 43 | $this->addOption( 'r', "Don't exit immediately, but show the lag every 5 seconds" ); |
| 44 | } |
| 45 | |
| 46 | public function execute() { |
| 47 | $lb = $this->getServiceContainer()->getDBLoadBalancer(); |
| 48 | if ( $this->hasOption( 'r' ) ) { |
| 49 | $this->output( 'time ' ); |
| 50 | |
| 51 | $serverCount = $lb->getServerCount(); |
| 52 | for ( $i = 1; $i < $serverCount; $i++ ) { |
| 53 | $hostname = $lb->getServerName( $i ); |
| 54 | $this->output( sprintf( "%-12s ", $hostname ) ); |
| 55 | } |
| 56 | $this->output( "\n" ); |
| 57 | |
| 58 | do { |
| 59 | $lags = $lb->getLagTimes(); |
| 60 | unset( $lags[0] ); |
| 61 | $this->output( gmdate( 'H:i:s' ) . ' ' ); |
| 62 | foreach ( $lags as $lag ) { |
| 63 | $this->output( |
| 64 | sprintf( |
| 65 | "%-12s ", |
| 66 | $lag === false ? 'replication stopped or errored' : $lag |
| 67 | ) |
| 68 | ); |
| 69 | } |
| 70 | $this->output( "\n" ); |
| 71 | sleep( 5 ); |
| 72 | } while ( !$this->stopReporting ); |
| 73 | |
| 74 | } else { |
| 75 | $lags = $lb->getLagTimes(); |
| 76 | foreach ( $lags as $i => $lag ) { |
| 77 | $name = $lb->getServerName( $i ); |
| 78 | $this->output( |
| 79 | sprintf( |
| 80 | "%-20s %s\n", |
| 81 | $name, |
| 82 | $lag === false ? 'replication stopped or errored' : $lag |
| 83 | ) |
| 84 | ); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | // @codeCoverageIgnoreStart |
| 91 | $maintClass = DatabaseLag::class; |
| 92 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 93 | // @codeCoverageIgnoreEnd |