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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2017 (original work) Open Assessment Technologies SA; |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | namespace oat\tao\model\actionQueue; |
| 24 | |
| 25 | use oat\oatbox\user\User; |
| 26 | |
| 27 | /** |
| 28 | * Interface ActionQueue |
| 29 | * |
| 30 | * configuration example: |
| 31 | * ```php |
| 32 | * new InstantActionQueue([ |
| 33 | * //persistence to store actions in queue |
| 34 | * InstantActionQueue::OPTION_PERSISTENCE => 'key_value_persistence', |
| 35 | * |
| 36 | * //registered actions |
| 37 | * InstantActionQueue::OPTION_ACTIONS => [ |
| 38 | * SomeAction::class => [ |
| 39 | * //limit of active actions. 0 means that queue is disabled for this action |
| 40 | * InstantActionQueue::ACTION_PARAM_LIMIT => 10, |
| 41 | * //time to live |
| 42 | * InstantActionQueue::ACTION_PARAM_TTL => 30, |
| 43 | * ] |
| 44 | * ] |
| 45 | * ]); |
| 46 | * ``` |
| 47 | * |
| 48 | * @author Aleh Hutnikau, <hutnikau@1pt.com> |
| 49 | * @package oat\tao\model\actionQueue |
| 50 | */ |
| 51 | interface ActionQueue |
| 52 | { |
| 53 | public const SERVICE_ID = 'tao/ActionQueue'; |
| 54 | |
| 55 | /** |
| 56 | * List of registered actions to be performed using action queue |
| 57 | */ |
| 58 | public const OPTION_ACTIONS = 'actions'; |
| 59 | |
| 60 | /** |
| 61 | * Persistence identifier |
| 62 | */ |
| 63 | public const OPTION_PERSISTENCE = 'persistence'; |
| 64 | |
| 65 | /** |
| 66 | * Limit of actions in progress. |
| 67 | * If number of active actions will be more that this value then action will be put into queue |
| 68 | */ |
| 69 | public const ACTION_PARAM_LIMIT = 'limit'; |
| 70 | |
| 71 | /** |
| 72 | * Time to live for place in the queue (seconds). Configures per actions. |
| 73 | */ |
| 74 | public const ACTION_PARAM_TTL = 'ttl'; |
| 75 | |
| 76 | /** |
| 77 | * @param QueuedAction $action |
| 78 | * @param User $user user which tries to perform action |
| 79 | * @return boolean |
| 80 | */ |
| 81 | public function perform(QueuedAction $action, User $user = null); |
| 82 | |
| 83 | /** |
| 84 | * @param QueuedAction $action |
| 85 | * @param User $user |
| 86 | * @return integer |
| 87 | */ |
| 88 | public function getPosition(QueuedAction $action, User $user = null); |
| 89 | |
| 90 | /** |
| 91 | * @param QueuedAction $action |
| 92 | * @return integer Number of removed positions |
| 93 | */ |
| 94 | public function clearAbandonedPositions(QueuedAction $action); |
| 95 | |
| 96 | /** |
| 97 | * @param QueuedAction $action |
| 98 | * @return bool |
| 99 | */ |
| 100 | public function isActionEnabled(QueuedAction $action): bool; |
| 101 | } |