const TYPE_ANY = 2; // integer; any job
const USE_CACHE = 1; // integer; use process or persistent cache
+ const USE_PRIORITY = 2; // integer; respect deprioritization
const PROC_CACHE_TTL = 15; // integer; seconds
const CACHE_VERSION = 1; // integer; cache version
/**
- * @param $wiki string Wiki ID
+ * @param string $wiki Wiki ID
*/
protected function __construct( $wiki ) {
$this->wiki = $wiki;
}
/**
- * @param $wiki string Wiki ID
+ * @param string $wiki Wiki ID
* @return JobQueueGroup
*/
public static function singleton( $wiki = false ) {
*/
public function pop( $qtype = self::TYPE_DEFAULT, $flags = 0 ) {
if ( is_string( $qtype ) ) { // specific job type
+ if ( ( $flags & self::USE_PRIORITY ) && $this->isQueueDeprioritized( $qtype ) ) {
+ return false; // back off
+ }
$job = $this->get( $qtype )->pop();
if ( !$job ) {
JobQueueAggregator::singleton()->notifyQueueEmpty( $this->wiki, $qtype );
shuffle( $types ); // avoid starvation
foreach ( $types as $type ) { // for each queue...
+ if ( ( $flags & self::USE_PRIORITY ) && $this->isQueueDeprioritized( $type ) ) {
+ continue; // back off
+ }
$job = $this->get( $type )->pop();
if ( $job ) { // found
return $job;
return $this->get( $job->getType() )->deduplicateRootJob( $job );
}
+ /**
+ * Wait for any slaves or backup queue servers to catch up.
+ *
+ * This does nothing for certain queue classes.
+ *
+ * @return void
+ * @throws MWException
+ */
+ public function waitForBackups() {
+ global $wgJobTypeConf;
+
+ wfProfileIn( __METHOD__ );
+ // Try to avoid doing this more than once per queue storage medium
+ foreach ( $wgJobTypeConf as $type => $conf ) {
+ $this->get( $type )->waitForBackups();
+ }
+ wfProfileOut( __METHOD__ );
+ }
+
/**
* Get the list of queue types
*
* @return bool
*/
public function isQueueDeprioritized( $type ) {
+ if ( $this->cache->has( 'isDeprioritized', $type, 5 ) ) {
+ return $this->cache->get( 'isDeprioritized', $type );
+ }
if ( $type === 'refreshLinks2' ) {
// Don't keep converting refreshLinks2 => refreshLinks jobs if the
// later jobs have not been done yet. This helps throttle queue spam.
- return !$this->get( 'refreshLinks' )->isEmpty();
+ $deprioritized = !$this->get( 'refreshLinks' )->isEmpty();
+ $this->cache->set( 'isDeprioritized', $type, $deprioritized );
+ return $deprioritized;
}
return false;
}