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PhabricatorTaskmasterDaemonModule.php
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			<?php

			final class PhabricatorTaskmasterDaemonModule
			extends PhutilDaemonOverseerModule {

			public function shouldWakePool(PhutilDaemonPool $pool) {
			$class = $pool->getPoolDaemonClass();

			if ($class != 'PhabricatorTaskmasterDaemon') {
			return false;
			}

			if ($this->shouldThrottle($class, 1)) {
			return false;
			}

			$table = new PhabricatorWorkerActiveTask();
			$conn = $table->establishConnection('r');

			$row = queryfx_one(
			$conn,
			'SELECT id FROM %T WHERE leaseOwner IS NULL
			OR leaseExpires <= %d LIMIT 1',
			$table->getTableName(),
			PhabricatorTime::getNow());
			if (!$row) {
			return false;
			}

			return true;
			}

			}