Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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manager.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\cron;
015
016 /**
017 * Cron manager class.
018 *
019 * Finds installed cron tasks, stores task objects, provides task selection.
020 */
021 class manager
022 {
023 /**
024 * Set of \phpbb\cron\task\wrapper objects.
025 * Array holding all tasks that have been found.
026 *
027 * @var array
028 */
029 protected $tasks = array();
030
031 protected $phpbb_root_path;
032 protected $php_ext;
033
034 /**
035 * Constructor. Loads all available tasks.
036 *
037 * @param array|\Traversable $tasks Provides an iterable set of task names
038 * @param string $phpbb_root_path Relative path to phpBB root
039 * @param string $php_ext PHP file extension
040 */
041 public function __construct($tasks, $phpbb_root_path, $php_ext)
042 {
043 $this->phpbb_root_path = $phpbb_root_path;
044 $this->php_ext = $php_ext;
045
046 $this->load_tasks($tasks);
047 }
048
049 /**
050 * Loads tasks given by name, wraps them
051 * and puts them into $this->tasks.
052 *
053 * @param array|\Traversable $tasks Array of instances of \phpbb\cron\task\task
054 *
055 * @return null
056 */
057 public function load_tasks($tasks)
058 {
059 foreach ($tasks as $task)
060 {
061 $this->tasks[] = $this->wrap_task($task);
062 }
063 }
064
065 /**
066 * Finds a task that is ready to run.
067 *
068 * If several tasks are ready, any one of them could be returned.
069 *
070 * If no tasks are ready, null is returned.
071 *
072 * @return \phpbb\cron\task\wrapper|null
073 */
074 public function find_one_ready_task()
075 {
076 shuffle($this->tasks);
077 foreach ($this->tasks as $task)
078 {
079 if ($task->is_ready())
080 {
081 return $task;
082 }
083 }
084 return null;
085 }
086
087 /**
088 * Finds all tasks that are ready to run.
089 *
090 * @return array List of tasks which are ready to run (wrapped in \phpbb\cron\task\wrapper).
091 */
092 public function find_all_ready_tasks()
093 {
094 $tasks = array();
095 foreach ($this->tasks as $task)
096 {
097 if ($task->is_ready())
098 {
099 $tasks[] = $task;
100 }
101 }
102 return $tasks;
103 }
104
105 /**
106 * Finds a task by name.
107 *
108 * If there is no task with the specified name, null is returned.
109 *
110 * Web runner uses this method to resolve names to tasks.
111 *
112 * @param string $name Name of the task to look up.
113 * @return \phpbb\cron\task\wrapper A wrapped task corresponding to the given name, or null.
114 */
115 public function find_task($name)
116 {
117 foreach ($this->tasks as $task)
118 {
119 if ($task->get_name() == $name)
120 {
121 return $task;
122 }
123 }
124 return null;
125 }
126
127 /**
128 * Find all tasks and return them.
129 *
130 * @return array List of all tasks.
131 */
132 public function get_tasks()
133 {
134 return $this->tasks;
135 }
136
137 /**
138 * Wraps a task inside an instance of \phpbb\cron\task\wrapper.
139 *
140 * @param \phpbb\cron\task\task $task The task.
141 * @return \phpbb\cron\task\wrapper The wrapped task.
142 */
143 public function wrap_task(\phpbb\cron\task\task $task)
144 {
145 return new \phpbb\cron\task\wrapper($task, $this->phpbb_root_path, $this->php_ext);
146 }
147 }
148