MediaWiki  1.28.0
JobQueueAggregatorRedis.php
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1 <?php
24 
36  protected $redisPool;
38  protected $logger;
40  protected $servers;
41 
51  public function __construct( array $params ) {
52  parent::__construct( $params );
53  $this->servers = isset( $params['redisServers'] )
54  ? $params['redisServers']
55  : [ $params['redisServer'] ]; // b/c
56  $params['redisConfig']['serializer'] = 'none';
57  $this->redisPool = RedisConnectionPool::singleton( $params['redisConfig'] );
58  $this->logger = \MediaWiki\Logger\LoggerFactory::getInstance( 'redis' );
59  }
60 
61  protected function doNotifyQueueEmpty( $wiki, $type ) {
62  return true; // managed by the service
63  }
64 
65  protected function doNotifyQueueNonEmpty( $wiki, $type ) {
66  return true; // managed by the service
67  }
68 
69  protected function doGetAllReadyWikiQueues() {
70  $conn = $this->getConnection();
71  if ( !$conn ) {
72  return [];
73  }
74  try {
75  $map = $conn->hGetAll( $this->getReadyQueueKey() );
76 
77  if ( is_array( $map ) && isset( $map['_epoch'] ) ) {
78  unset( $map['_epoch'] ); // ignore
79  $pendingDBs = []; // (type => list of wikis)
80  foreach ( $map as $key => $time ) {
81  list( $type, $wiki ) = $this->decodeQueueName( $key );
82  $pendingDBs[$type][] = $wiki;
83  }
84  } else {
85  throw new UnexpectedValueException(
86  "No queue listing found; make sure redisJobChronService is running."
87  );
88  }
89 
90  return $pendingDBs;
91  } catch ( RedisException $e ) {
92  $this->redisPool->handleError( $conn, $e );
93 
94  return [];
95  }
96  }
97 
98  protected function doPurge() {
99  return true; // fully and only refreshed by the service
100  }
101 
108  protected function getConnection() {
109  $conn = false;
110  foreach ( $this->servers as $server ) {
111  $conn = $this->redisPool->getConnection( $server, $this->logger );
112  if ( $conn ) {
113  break;
114  }
115  }
116 
117  return $conn;
118  }
119 
123  private function getReadyQueueKey() {
124  return "jobqueue:aggregator:h-ready-queues:v2"; // global
125  }
126 
131  private function decodeQueueName( $name ) {
132  list( $type, $wiki ) = explode( '/', $name, 2 );
133 
134  return [ rawurldecode( $type ), rawurldecode( $wiki ) ];
135  }
136 }
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Definition: deferred.txt:11
the array() calling protocol came about after MediaWiki 1.4rc1.
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
Class to handle tracking information about all queues.
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Definition: hooks.txt:2102
static getInstance($channel)
Get a named logger instance from the currently configured logger factory.
array $servers
List of Redis server addresses.
static singleton(array $options)
getConnection()
Get a connection to the server that handles all sub-queues for this queue.
$params
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Definition: distributors.txt:9
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:35
storage can be distributed across multiple servers
Definition: memcached.txt:33
Class to handle tracking information about all queues using PhpRedis.
do that in ParserLimitReportFormat instead use this to modify the parameters of the image and a DIV can begin in one section and end in another Make sure your code can handle that case gracefully See the EditSectionClearerLink extension for an example zero but section is usually empty its values are the globals values before the output is cached one of or reset my talk my contributions etc etc otherwise the built in rate limiting checks are if enabled allows for interception of redirect as a string mapping parameter names to values & $type
Definition: hooks.txt:2491
see documentation in includes Linker php for Linker::makeImageLink & $time
Definition: hooks.txt:1749
Allows to change the fields on the form that will be generated $name
Definition: hooks.txt:300