PhabricatorDaemonTaskGarbageCollector.php
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	<?php

	final class PhabricatorDaemonTaskGarbageCollector
	extends PhabricatorGarbageCollector {

	const COLLECTORCONST = 'worker.tasks';

	public function getCollectorName() {
	return pht('Archived Tasks');
	}

	public function getDefaultRetentionPolicy() {
	return phutil_units('14 days in seconds');
	}

	protected function collectGarbage() {
	$table = new PhabricatorWorkerArchiveTask();
	$data_table = new PhabricatorWorkerTaskData();
	$conn_w = $table->establishConnection('w');

	$tasks = id(new PhabricatorWorkerArchiveTaskQuery())
	->withDateCreatedBefore($this->getGarbageEpoch())
	->setLimit(100)
	->execute();
	if (!$tasks) {
	return false;
	}

	$data_ids = array_filter(mpull($tasks, 'getDataID'));
	$task_ids = mpull($tasks, 'getID');

	$table->openTransaction();
	if ($data_ids) {
	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE id IN (%Ld)',
	$data_table->getTableName(),
	$data_ids);
	}
	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE id IN (%Ld)',
	$table->getTableName(),
	$task_ids);
	$table->saveTransaction();

	return (count($task_ids) == 100);
	}

	}