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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 | require_once __DIR__ . '/Maintenance.php'; |
25 | |
26 | /** |
27 | * Maintenance script to show database lag. |
28 | * |
29 | * @ingroup Maintenance |
30 | */ |
31 | class DatabaseLag extends Maintenance { |
32 | |
33 | protected $stopReporting = false; |
34 | |
35 | public function __construct() { |
36 | parent::__construct(); |
37 | $this->addDescription( 'Shows database lag' ); |
38 | $this->addOption( 'r', "Don't exit immediately, but show the lag every 5 seconds" ); |
39 | } |
40 | |
41 | public function execute() { |
42 | $lb = $this->getServiceContainer()->getDBLoadBalancer(); |
43 | if ( $this->hasOption( 'r' ) ) { |
44 | $this->output( 'time ' ); |
45 | |
46 | $serverCount = $lb->getServerCount(); |
47 | for ( $i = 1; $i < $serverCount; $i++ ) { |
48 | $hostname = $lb->getServerName( $i ); |
49 | $this->output( sprintf( "%-12s ", $hostname ) ); |
50 | } |
51 | $this->output( "\n" ); |
52 | |
53 | do { |
54 | $lags = $lb->getLagTimes(); |
55 | unset( $lags[0] ); |
56 | $this->output( gmdate( 'H:i:s' ) . ' ' ); |
57 | foreach ( $lags as $lag ) { |
58 | $this->output( |
59 | sprintf( |
60 | "%-12s ", |
61 | $lag === false ? 'replication stopped or errored' : $lag |
62 | ) |
63 | ); |
64 | } |
65 | $this->output( "\n" ); |
66 | sleep( 5 ); |
67 | } while ( !$this->stopReporting ); |
68 | |
69 | } else { |
70 | $lags = $lb->getLagTimes(); |
71 | foreach ( $lags as $i => $lag ) { |
72 | $name = $lb->getServerName( $i ); |
73 | $this->output( |
74 | sprintf( |
75 | "%-20s %s\n", |
76 | $name, |
77 | $lag === false ? 'replication stopped or errored' : $lag |
78 | ) |
79 | ); |
80 | } |
81 | } |
82 | } |
83 | } |
84 | |
85 | $maintClass = DatabaseLag::class; |
86 | require_once RUN_MAINTENANCE_IF_MAIN; |