$this->addOption( 'type', 'Type of job to run', false, true );
$this->addOption( 'procs', 'Number of processes to use', false, true );
$this->addOption( 'nothrottle', 'Ignore job throttling configuration', false, false );
+ $this->addOption( 'result', 'Set to JSON to print only a JSON response', false, true );
}
public function memoryLimit() {
}
}
- $type = $this->getOption( 'type', false );
- $maxJobs = $this->getOption( 'maxjobs', false );
- $maxTime = $this->getOption( 'maxtime', false );
- $noThrottle = $this->hasOption( 'nothrottle' );
- $startTime = time();
+ $json = ( $this->getOption( 'result' ) === 'json' );
- $group = JobQueueGroup::singleton();
- // Handle any required periodic queue maintenance
- $count = $group->executeReadyPeriodicTasks();
- if ( $count > 0 ) {
- $this->runJobsLog( "Executed $count periodic queue task(s)." );
+ $runner = new JobRunner();
+ if ( !$json ) {
+ $runner->setDebugHandler( array( $this, 'debugInternal' ) );
}
-
- $backoffs = $this->loadBackoffs(); // map of (type => UNIX expiry)
- $startingBackoffs = $backoffs; // avoid unnecessary writes
- $backoffExpireFunc = function ( $t ) {
- return $t > time();
- };
-
- $jobsRun = 0; // counter
- $flags = JobQueueGroup::USE_CACHE;
- $lastTime = microtime( true ); // time since last slave check
- do {
- $backoffs = array_filter( $backoffs, $backoffExpireFunc );
- $blacklist = $noThrottle ? array() : array_keys( $backoffs );
- if ( $type === false ) {
- $job = $group->pop( JobQueueGroup::TYPE_DEFAULT, $flags, $blacklist );
- } elseif ( in_array( $type, $blacklist ) ) {
- $job = false; // requested queue in backoff state
- } else {
- $job = $group->pop( $type ); // job from a single queue
- }
- if ( $job ) { // found a job
- ++$jobsRun;
- $this->runJobsLog( $job->toString() . " STARTING" );
-
- // Run the job...
- wfProfileIn( __METHOD__ . '-' . get_class( $job ) );
- $t = microtime( true );
- try {
- $status = $job->run();
- $error = $job->getLastError();
- } catch ( MWException $e ) {
- MWExceptionHandler::rollbackMasterChangesAndLog( $e );
- $status = false;
- $error = get_class( $e ) . ': ' . $e->getMessage();
- $e->report(); // write error to STDERR and the log
- }
- $timeMs = intval( ( microtime( true ) - $t ) * 1000 );
- wfProfileOut( __METHOD__ . '-' . get_class( $job ) );
-
- // Mark the job as done on success or when the job cannot be retried
- if ( $status !== false || !$job->allowRetries() ) {
- $group->ack( $job ); // done
- }
-
- if ( $status === false ) {
- $this->runJobsLog( $job->toString() . " t=$timeMs error={$error}" );
- } else {
- $this->runJobsLog( $job->toString() . " t=$timeMs good" );
- }
-
- // Back off of certain jobs for a while (for throttling and for errors)
- $ttw = $this->getBackoffTimeToWait( $job );
- if ( $status === false && mt_rand( 0, 49 ) == 0 ) {
- $ttw = max( $ttw, 30 );
- }
- if ( $ttw > 0 ) {
- $jType = $job->getType();
- $backoffs[$jType] = isset( $backoffs[$jType] ) ? $backoffs[$jType] : 0;
- $backoffs[$jType] = max( $backoffs[$jType], time() + $ttw );
- }
-
- // Break out if we hit the job count or wall time limits...
- if ( $maxJobs && $jobsRun >= $maxJobs ) {
- break;
- } elseif ( $maxTime && ( time() - $startTime ) > $maxTime ) {
- break;
- }
-
- // Don't let any of the main DB slaves get backed up
- $timePassed = microtime( true ) - $lastTime;
- if ( $timePassed >= 5 || $timePassed < 0 ) {
- wfWaitForSlaves( $lastTime );
- $lastTime = microtime( true );
- }
- // Don't let any queue slaves/backups fall behind
- if ( $jobsRun > 0 && ( $jobsRun % 100 ) == 0 ) {
- $group->waitForBackups();
- }
-
- // Bail if near-OOM instead of in a job
- $this->assertMemoryOK();
- }
- } while ( $job ); // stop when there are no jobs
- // Sync the persistent backoffs for the next runJobs.php pass
- $backoffs = array_filter( $backoffs, $backoffExpireFunc );
- if ( $backoffs !== $startingBackoffs ) {
- $this->syncBackoffs( $backoffs );
- }
- }
-
- /**
- * @param Job $job
- * @return int Seconds for this runner to avoid doing more jobs of this type
- * @see $wgJobBackoffThrottling
- */
- private function getBackoffTimeToWait( Job $job ) {
- global $wgJobBackoffThrottling;
-
- if ( !isset( $wgJobBackoffThrottling[$job->getType()] ) ||
- $job instanceof DuplicateJob // no work was done
- ) {
- return 0; // not throttled
- }
-
- $itemsPerSecond = $wgJobBackoffThrottling[$job->getType()];
- if ( $itemsPerSecond <= 0 ) {
- return 0; // not throttled
- }
-
- $seconds = 0;
- if ( $job->workItemCount() > 0 ) {
- $exactSeconds = $job->workItemCount() / $itemsPerSecond;
- // use randomized rounding
- $seconds = floor( $exactSeconds );
- $remainder = $exactSeconds - $seconds;
- $seconds += ( mt_rand() / mt_getrandmax() < $remainder ) ? 1 : 0;
- }
-
- return (int)$seconds;
- }
-
- /**
- * Get the previous backoff expiries from persistent storage
- *
- * @return array Map of (job type => backoff expiry timestamp)
- */
- private function loadBackoffs() {
- $section = new ProfileSection( __METHOD__ );
-
- $backoffs = array();
- $file = wfTempDir() . '/mw-runJobs-backoffs.json';
- if ( is_file( $file ) ) {
- $handle = fopen( $file, 'rb' );
- flock( $handle, LOCK_SH );
- $content = stream_get_contents( $handle );
- flock( $handle, LOCK_UN );
- fclose( $handle );
- $backoffs = json_decode( $content, true ) ? : array();
- }
-
- return $backoffs;
- }
-
- /**
- * Merge the current backoff expiries from persistent storage
- *
- * @param array $backoffs Map of (job type => backoff expiry timestamp)
- */
- private function syncBackoffs( array $backoffs ) {
- $section = new ProfileSection( __METHOD__ );
-
- $file = wfTempDir() . '/mw-runJobs-backoffs.json';
- $handle = fopen( $file, 'wb+' );
- flock( $handle, LOCK_EX );
- $content = stream_get_contents( $handle );
- $cBackoffs = json_decode( $content, true ) ? : array();
- foreach ( $backoffs as $type => $timestamp ) {
- $cBackoffs[$type] = isset( $cBackoffs[$type] ) ? $cBackoffs[$type] : 0;
- $cBackoffs[$type] = max( $cBackoffs[$type], $backoffs[$type] );
- }
- ftruncate( $handle, 0 );
- fwrite( $handle, json_encode( $backoffs ) );
- flock( $handle, LOCK_UN );
- fclose( $handle );
- }
-
- /**
- * Make sure that this script is not too close to the memory usage limit.
- * It is better to die in between jobs than OOM right in the middle of one.
- * @throws MWException
- */
- private function assertMemoryOK() {
- static $maxBytes = null;
- if ( $maxBytes === null ) {
- $m = array();
- if ( preg_match( '!^(\d+)(k|m|g|)$!i', ini_get( 'memory_limit' ), $m ) ) {
- list( , $num, $unit ) = $m;
- $conv = array( 'g' => 1073741824, 'm' => 1048576, 'k' => 1024, '' => 1 );
- $maxBytes = $num * $conv[strtolower( $unit )];
- } else {
- $maxBytes = 0;
- }
- }
- $usedBytes = memory_get_usage();
- if ( $maxBytes && $usedBytes >= 0.95 * $maxBytes ) {
- throw new MWException( "Detected excessive memory usage ($usedBytes/$maxBytes)." );
+ $response = $runner->run( array(
+ 'type' => $this->getOption( 'type', false ),
+ 'maxJobs' => $this->getOption( 'maxjobs', false ),
+ 'maxTime' => $this->getOption( 'maxtime', false ),
+ 'throttle' => $this->hasOption( 'nothrottle' ) ? false : true,
+ ) );
+ if ( $json ) {
+ $this->output( FormatJson::encode( $response, true ) );
}
}
/**
- * Log the job message
- * @param string $msg The message to log
+ * @param string $s
*/
- private function runJobsLog( $msg ) {
- $this->output( wfTimestamp( TS_DB ) . " $msg\n" );
- wfDebugLog( 'runJobs', $msg );
+ public function debugInternal( $s ) {
+ $this->output( $s );
}
}
dépôts / lhc / web / wiklou.git / blobdiff