MediaWiki REL1_30
lag.php
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1<?php
24require_once __DIR__ . '/Maintenance.php';
25
31class DatabaseLag extends Maintenance {
32 public function __construct() {
33 parent::__construct();
34 $this->addDescription( 'Shows database lag' );
35 $this->addOption( 'r', "Don't exit immediately, but show the lag every 5 seconds" );
36 }
37
38 public function execute() {
39 if ( $this->hasOption( 'r' ) ) {
40 $lb = wfGetLB();
41 echo 'time ';
42
43 $serverCount = $lb->getServerCount();
44 for ( $i = 1; $i < $serverCount; $i++ ) {
45 $hostname = $lb->getServerName( $i );
46 printf( "%-12s ", $hostname );
47 }
48 echo "\n";
49
50 while ( 1 ) {
51 $lags = $lb->getLagTimes();
52 unset( $lags[0] );
53 echo gmdate( 'H:i:s' ) . ' ';
54 foreach ( $lags as $lag ) {
55 printf( "%-12s ", $lag === false ? 'false' : $lag );
56 }
57 echo "\n";
58 sleep( 5 );
59 }
60 } else {
61 $lb = wfGetLB();
62 $lags = $lb->getLagTimes();
63 foreach ( $lags as $i => $lag ) {
64 $name = $lb->getServerName( $i );
65 $this->output( sprintf( "%-20s %s\n", $name, $lag === false ? 'false' : $lag ) );
66 }
67 }
68 }
69}
70
71$maintClass = "DatabaseLag";
72require_once RUN_MAINTENANCE_IF_MAIN;
wfGetLB( $wiki=false)
Get a load balancer object.
Maintenance script to show database lag.
Definition lag.php:31
execute()
Do the actual work.
Definition lag.php:38
__construct()
Default constructor.
Definition lag.php:32
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
hasOption( $name)
Checks to see if a particular param exists.
addDescription( $text)
Set the description text.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at etc Handles the details of getting and saving to the user table of the and dealing with sessions and cookies OutputPage Encapsulates the entire HTML page that will be sent in response to any server request It is used by calling its functions to add in any and then calling output() to send it all. It could be easily changed to send incrementally if that becomes useful
$maintClass
Definition lag.php:71
require_once RUN_MAINTENANCE_IF_MAIN