drupal-civicrm/sites/all/modules/civicrm/CRM/Queue/Task.php

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2018-01-14 15:10:16 +02:00
<?php
/*
+--------------------------------------------------------------------+
| CiviCRM version 4.7 |
+--------------------------------------------------------------------+
| Copyright CiviCRM LLC (c) 2004-2017 |
+--------------------------------------------------------------------+
| This file is a part of CiviCRM. |
| |
| CiviCRM is free software; you can copy, modify, and distribute it |
| under the terms of the GNU Affero General Public License |
| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
| |
| CiviCRM is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the GNU Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public |
| License and the CiviCRM Licensing Exception along |
| with this program; if not, contact CiviCRM LLC |
| at info[AT]civicrm[DOT]org. If you have questions about the |
| GNU Affero General Public License or the licensing of CiviCRM, |
| see the CiviCRM license FAQ at http://civicrm.org/licensing |
+--------------------------------------------------------------------+
*/
/**
* A task is an item that can be enqueued and later executed
*/
class CRM_Queue_Task {
/**
* Task was performed successfully.
*/
const TASK_SUCCESS = 1;
/**
* Task failed and should not be retried.
*/
const TASK_FAIL = 2;
/**
* @var mixed, serializable
*/
public $callback;
/**
* @var array, serializable
*/
public $arguments;
/**
* @var string, NULL-able
*/
public $title;
/**
* @param mixed $callback
* Serializable, a callable PHP item; must accept at least one argument
* (CRM_Queue_TaskContext).
* @param array $arguments
* Serializable, extra arguments to pass to the callback (in order).
* @param string $title
* A printable string which describes this task.
*/
public function __construct($callback, $arguments, $title = NULL) {
$this->callback = $callback;
$this->arguments = $arguments;
$this->title = $title;
}
/**
* Perform the task.
*
* @param array $taskCtx
* Array with keys:
* - log: object 'Log'
*
* @throws Exception
* @return bool, TRUE if task completes successfully
*/
public function run($taskCtx) {
$args = $this->arguments;
array_unshift($args, $taskCtx);
if (is_callable($this->callback)) {
$result = call_user_func_array($this->callback, $args);
return $result;
}
else {
throw new Exception('Failed to call callback: ' . print_r($this->callback));
}
}
}