Fix cleanup timeout disable.

Author: dereuromark

docs/README.md

@@ -64,12 +64,12 @@ You may create a file called `app_queue.php` inside your `config` folder (NOT th
     $config['Queue']['exitwhennothingtodo'] = false;
     ```
 
-- Minimum number of seconds before a cleanup run will remove a completed task; defaults to 0 for the Queue worker, or 2592000 for the Cron worker:
+- Minimum number of seconds before a cleanup run will remove a completed task (set to 0 to disable):
 
     ```php
     $config['Queue']['cleanuptimeout'] = 2592000; // 30 days
     ```
-	
+
 - Use a different connection:
 
     ```php

src/Model/Table/QueuedJobsTable.php

@@ -412,6 +412,10 @@ public function getPendingStats() {
 	 * @return void
 	 */
 	public function cleanOldJobs() {
+		if (!Configure::read('Queue.cleanuptimeout')) {
+			return;
+		}
+
 		$this->deleteAll([
 			'completed <' => time() - Configure::read('Queue.cleanuptimeout'),
 		]);

src/Shell/QueueShell.php

@@ -229,6 +229,10 @@ protected function _logError($message) {
 	 * @return void
 	 */
 	public function clean() {
+		if (!Configure::read('Queue.cleanuptimeout')) {
+			$this->abort('You disabled cleanuptimout in config. Aborting.');
+		}
+
 		$this->out('Deleting old jobs, that have finished before ' . date('Y-m-d H:i:s', time() - Configure::read('Queue.cleanuptimeout')));
 		$this->QueuedJobs->cleanOldJobs();
 		$this->QueueProcesses->cleanKilledProcesses();