MediaWiki REL1_28
getLagTimes.php
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1<?php
24require_once __DIR__ . '/Maintenance.php';
25
31class GetLagTimes extends Maintenance {
32 public function __construct() {
33 parent::__construct();
34 $this->addDescription( 'Dump replication lag times' );
35 }
36
37 public function execute() {
38 $lb = wfGetLB();
39
40 if ( $lb->getServerCount() == 1 ) {
41 $this->error( "This script dumps replication lag times, but you don't seem to have\n"
42 . "a multi-host db server configuration." );
43 } else {
44 $lags = $lb->getLagTimes();
45 foreach ( $lags as $n => $lag ) {
46 $host = $lb->getServerName( $n );
47 if ( IP::isValid( $host ) ) {
48 $ip = $host;
49 $host = gethostbyaddr( $host );
50 } else {
51 $ip = gethostbyname( $host );
52 }
53 $starLen = min( intval( $lag ), 40 );
54 $stars = str_repeat( '*', $starLen );
55 $this->output( sprintf( "%10s %20s %3d %s\n", $ip, $host, $lag, $stars ) );
56 }
57 }
58 }
59}
60
61$maintClass = "GetLagTimes";
62require_once RUN_MAINTENANCE_IF_MAIN;
wfGetLB
wfGetLB( $wiki=false)
Get a load balancer object.
Definition GlobalFunctions.php:3087
GetLagTimes
Maintenance script that displays replication lag times.
Definition getLagTimes.php:31
GetLagTimes\execute
execute()
Do the actual work.
Definition getLagTimes.php:37
GetLagTimes\__construct
__construct()
Default constructor.
Definition getLagTimes.php:32
IP\isValid
static isValid( $ip)
Validate an IP address.
Definition IP.php:113
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition maintenance.txt:39
Maintenance\error
error( $err, $die=0)
Throw an error to the user.
Definition Maintenance.php:387
Maintenance\addDescription
addDescription( $text)
Set the description text.
Definition Maintenance.php:282
output
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
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition distributors.txt:22
$maintClass
$maintClass
Definition getLagTimes.php:61
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition injection.txt:37
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition maintenance.txt:50