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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\cron;
use phpbb\cron\task\wrapper;
use phpbb\routing\helper;
/**
* Cron manager class.
*
* Finds installed cron tasks, stores task objects, provides task selection.
*/
class manager
{
/**
* @var helper
*/
protected $routing_helper;
/**
* Set of \phpbb\cron\task\wrapper objects.
* Array holding all tasks that have been found.
*
* @var array
*/
protected $tasks = array();
/**
* @var string
*/
protected $phpbb_root_path;
/**
* @var string
*/
protected $php_ext;
/**
* Constructor. Loads all available tasks.
*
* @param array|\Traversable $tasks Provides an iterable set of task names
* @param helper $routing_helper Routing helper
* @param string $phpbb_root_path Relative path to phpBB root
* @param string $php_ext PHP file extension
*/
public function __construct($tasks, helper $routing_helper, $phpbb_root_path, $php_ext)
{
$this->routing_helper = $routing_helper;
$this->phpbb_root_path = $phpbb_root_path;
$this->php_ext = $php_ext;
$this->load_tasks($tasks);
}
/**
* Loads tasks given by name, wraps them
* and puts them into $this->tasks.
*
* @param array|\Traversable $tasks Array of instances of \phpbb\cron\task\task
*
* @return null
*/
public function load_tasks($tasks)
{
foreach ($tasks as $task)
{
$this->tasks[] = $this->wrap_task($task);
}
}
/**
* Finds a task that is ready to run.
*
* If several tasks are ready, any one of them could be returned.
*
* If no tasks are ready, null is returned.
*
* @return \phpbb\cron\task\wrapper|null
*/
public function find_one_ready_task()
{
shuffle($this->tasks);
foreach ($this->tasks as $task)
{
if ($task->is_ready())
{
return $task;
}
}
return null;
}
/**
* Finds all tasks that are ready to run.
*
* @return array List of tasks which are ready to run (wrapped in \phpbb\cron\task\wrapper).
*/
public function find_all_ready_tasks()
{
$tasks = array();
foreach ($this->tasks as $task)
{
if ($task->is_ready())
{
$tasks[] = $task;
}
}
return $tasks;
}
/**
* Finds a task by name.
*
* If there is no task with the specified name, null is returned.
*
* Web runner uses this method to resolve names to tasks.
*
* @param string $name Name of the task to look up.
* @return \phpbb\cron\task\wrapper A wrapped task corresponding to the given name, or null.
*/
public function find_task($name)
{
foreach ($this->tasks as $task)
{
if ($task->get_name() == $name)
{
return $task;
}
}
return null;
}
/**
* Find all tasks and return them.
*
* @return array List of all tasks.
*/
public function get_tasks()
{
return $this->tasks;
}
/**
* Wraps a task inside an instance of \phpbb\cron\task\wrapper.
*
* @param \phpbb\cron\task\task $task The task.
* @return \phpbb\cron\task\wrapper The wrapped task.
*/
public function wrap_task(\phpbb\cron\task\task $task)
{
return new wrapper($task, $this->routing_helper, $this->phpbb_root_path, $this->php_ext);
}
}
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