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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\JobQueue; |
22 | |
23 | /** |
24 | * Interface for serializable objects that describe a job queue task |
25 | * |
26 | * A job specification can be inserted into a queue via JobQueue::push(). |
27 | * The specification parameters should be JSON serializable (e.g. no PHP classes). |
28 | * Whatever queue the job specification is pushed into is assumed to have job runners |
29 | * that will eventually pop the job specification from the queue, construct a RunnableJob |
30 | * instance from the specification, and then execute that instance via RunnableJob::run(). |
31 | * |
32 | * Job classes must have a constructor that takes a Title and a parameter array, except |
33 | * when they also implement GenericParameterJob in which case they must only take an array. |
34 | * When reconstructing the job from the job queue, the value returned from getParams() will |
35 | * be passed in as the constructor's array parameter; the title will be constructed from |
36 | * the parameter array's `namespace` and `title` fields (when these are omitted, some |
37 | * fallback title will be used). |
38 | * |
39 | * @ingroup JobQueue |
40 | * @since 1.23 |
41 | */ |
42 | interface IJobSpecification { |
43 | /** |
44 | * @return string Job type that defines what sort of changes this job makes |
45 | */ |
46 | public function getType(); |
47 | |
48 | /** |
49 | * @return array Parameters that specify sources, targets, and options for execution |
50 | */ |
51 | public function getParams(); |
52 | |
53 | /** |
54 | * @return int|null UNIX timestamp to delay running this job until, otherwise null |
55 | */ |
56 | public function getReleaseTimestamp(); |
57 | |
58 | /** |
59 | * @return bool Whether only one of each identical set of jobs should be run |
60 | */ |
61 | public function ignoreDuplicates(); |
62 | |
63 | /** |
64 | * Subclasses may need to override this to make duplication detection work. |
65 | * The resulting map conveys everything that makes the job unique. This is |
66 | * only checked if ignoreDuplicates() returns true, meaning that duplicate |
67 | * jobs are supposed to be ignored. |
68 | * |
69 | * @return array Map of key/values |
70 | */ |
71 | public function getDeduplicationInfo(); |
72 | |
73 | /** |
74 | * @see JobQueue::deduplicateRootJob() |
75 | * @return array |
76 | * @since 1.26 |
77 | */ |
78 | public function getRootJobParams(); |
79 | |
80 | /** |
81 | * @see JobQueue::deduplicateRootJob() |
82 | * @return bool |
83 | * @since 1.22 |
84 | */ |
85 | public function hasRootJobParams(); |
86 | |
87 | /** |
88 | * @see JobQueue::deduplicateRootJob() |
89 | * @return bool Whether this is job is a root job |
90 | */ |
91 | public function isRootJob(); |
92 | } |
93 | |
94 | /** @deprecated class alias since 1.44 */ |
95 | class_alias( IJobSpecification::class, 'IJobSpecification' ); |