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<?php
/**
*
* @package phpBB3
* @copyright (c) 2010 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Cron task wrapper class.
* Enhances cron tasks with convenience methods that work identically for all tasks.
*
* @package phpBB3
*/
class phpbb_cron_task_wrapper
{
/**
* Constructor.
*
* Wraps a task $task, which must implement cron_task interface.
*
* @param phpbb_cron_task $task The cron task to wrap.
*/
public function __construct(phpbb_cron_task $task)
{
$this->task = $task;
}
/**
* Returns whether the wrapped task is parametrised.
*
* Parametrized tasks accept parameters during initialization and must
* normally be scheduled with parameters.
*
* @return bool Whether or not this task is parametrized.
*/
public function is_parametrized()
{
return $this->task instanceof phpbb_cron_task_parametrized;
}
/**
* Returns whether the wrapped task is ready to run.
*
* A task is ready to run when it is runnable according to current configuration
* and enough time has passed since it was last run.
*
* @return bool Whether the wrapped task is ready to run.
*/
public function is_ready()
{
return $this->task->is_runnable() && $this->task->should_run();
}
/**
* Returns the name of wrapped task. It is the same as the wrapped class's class name.
*
* @return string Class name of wrapped task.
*/
public function get_name()
{
return get_class($this->task);
}
/**
* Returns a url through which this task may be invoked via web.
*
* When system cron is not in use, running a cron task is accomplished
* by outputting an image with the url returned by this function as
* source.
*
* @return string URL through which this task may be invoked.
*/
public function get_url()
{
global $phpbb_root_path, $phpEx;
$name = $this->get_name();
if ($this->is_parametrized())
{
$params = $this->task->get_parameters();
$extra = '';
foreach ($params as $key => $value)
{
$extra .= '&' . $key . '=' . urlencode($value);
}
}
else
{
$extra = '';
}
$url = append_sid($phpbb_root_path . 'cron.' . $phpEx, 'cron_type=' . $name . $extra);
return $url;
}
/**
* Forwards all other method calls to the wrapped task implementation.
*
* @return mixed
*/
public function __call($name, $args)
{
return call_user_func_array(array($this->task, $name), $args);
}
}
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