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Merge "Improve sorting on SpecialWanted*-Pages"
[mediawiki.git] / maintenance / rebuildrecentchanges.php
blob458dacf56d0b3468afc815b58ef0ebf294b1abac
1 <?php
2 /**
3 * Rebuild recent changes from scratch. This takes several hours,
4 * depending on the database size and server configuration.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 * http://www.gnu.org/copyleft/gpl.html
20 *
21 * @file
22 * @ingroup Maintenance
23 * @todo Document
24 */
25
26 require_once __DIR__ . '/Maintenance.php';
27
28 /**
29 * Maintenance script that rebuilds recent changes from scratch.
30 *
31 * @ingroup Maintenance
32 */
33 class RebuildRecentchanges extends Maintenance {
34 /** @var integer UNIX timestamp */
35 private $cutoffFrom;
36 /** @var integer UNIX timestamp */
37 private $cutoffTo;
38
39 public function __construct() {
40 parent::__construct();
41 $this->addDescription( 'Rebuild recent changes' );
42
43 $this->addOption(
44 'from',
45 "Only rebuild rows in requested time range (in YYYYMMDDHHMMSS format)",
46 false,
47 true
48 );
49 $this->addOption(
50 'to',
51 "Only rebuild rows in requested time range (in YYYYMMDDHHMMSS format)",
52 false,
53 true
54 );
55 $this->setBatchSize( 200 );
56 }
57
58 public function execute() {
59 if (
60 ( $this->hasOption( 'from' ) && !$this->hasOption( 'to' ) ) ||
61 ( !$this->hasOption( 'from' ) && $this->hasOption( 'to' ) )
62 ) {
63 $this->error( "Both 'from' and 'to' must be given, or neither", 1 );
64 }
65
66 $this->rebuildRecentChangesTablePass1();
67 $this->rebuildRecentChangesTablePass2();
68 $this->rebuildRecentChangesTablePass3();
69 $this->rebuildRecentChangesTablePass4();
70 $this->rebuildRecentChangesTablePass5();
71 if ( !( $this->hasOption( 'from' ) && $this->hasOption( 'to' ) ) ) {
72 $this->purgeFeeds();
73 }
74 $this->output( "Done.\n" );
75 }
76
77 /**
78 * Rebuild pass 1: Insert `recentchanges` entries for page revisions.
79 */
80 private function rebuildRecentChangesTablePass1() {
81 $dbw = $this->getDB( DB_MASTER );
82
83 if ( $this->hasOption( 'from' ) && $this->hasOption( 'to' ) ) {
84 $this->cutoffFrom = wfTimestamp( TS_UNIX, $this->getOption( 'from' ) );
85 $this->cutoffTo = wfTimestamp( TS_UNIX, $this->getOption( 'to' ) );
86
87 $sec = $this->cutoffTo - $this->cutoffFrom;
88 $days = $sec / 24 / 3600;
89 $this->output( "Rebuilding range of $sec seconds ($days days)\n" );
90 } else {
91 global $wgRCMaxAge;
92
93 $days = $wgRCMaxAge / 24 / 3600;
94 $this->output( "Rebuilding \$wgRCMaxAge=$wgRCMaxAge seconds ($days days)\n" );
95
96 $this->cutoffFrom = time() - $wgRCMaxAge;
97 $this->cutoffTo = time();
98 }
99
100 $this->output( "Clearing recentchanges table for time range...\n" );
101 $rcids = $dbw->selectFieldValues(
102 'recentchanges',
103 'rc_id',
104 [
105 'rc_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
106 'rc_timestamp < ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) )
107 ]
108 );
109 foreach ( array_chunk( $rcids, $this->mBatchSize ) as $rcidBatch ) {
110 $dbw->delete( 'recentchanges', [ 'rc_id' => $rcidBatch ], __METHOD__ );
111 wfGetLBFactory()->waitForReplication();
112 }
113
114 $this->output( "Loading from page and revision tables...\n" );
115 $res = $dbw->select(
116 [ 'page', 'revision' ],
117 [
118 'rev_timestamp',
119 'rev_user',
120 'rev_user_text',
121 'rev_comment',
122 'rev_minor_edit',
123 'rev_id',
124 'rev_deleted',
125 'page_namespace',
126 'page_title',
127 'page_is_new',
128 'page_id'
129 ],
130 [
131 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
132 'rev_timestamp < ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) ),
133 'rev_page=page_id'
134 ],
135 __METHOD__,
136 [ 'ORDER BY' => 'rev_timestamp DESC' ]
137 );
138
139 $this->output( "Inserting from page and revision tables...\n" );
140 $inserted = 0;
141 foreach ( $res as $row ) {
142 $dbw->insert(
143 'recentchanges',
144 [
145 'rc_timestamp' => $row->rev_timestamp,
146 'rc_user' => $row->rev_user,
147 'rc_user_text' => $row->rev_user_text,
148 'rc_namespace' => $row->page_namespace,
149 'rc_title' => $row->page_title,
150 'rc_comment' => $row->rev_comment,
151 'rc_minor' => $row->rev_minor_edit,
152 'rc_bot' => 0,
153 'rc_new' => $row->page_is_new,
154 'rc_cur_id' => $row->page_id,
155 'rc_this_oldid' => $row->rev_id,
156 'rc_last_oldid' => 0, // is this ok?
157 'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
158 'rc_source' => $row->page_is_new
159 ? $dbw->addQuotes( RecentChange::SRC_NEW )
160 : $dbw->addQuotes( RecentChange::SRC_EDIT )
161 ,
162 'rc_deleted' => $row->rev_deleted
163 ],
164 __METHOD__
165 );
166 if ( ( ++$inserted % $this->mBatchSize ) == 0 ) {
167 wfGetLBFactory()->waitForReplication();
168 }
169 }
170 }
171
172 /**
173 * Rebuild pass 2: Enhance entries for page revisions with references to the previous revision
174 * (rc_last_oldid, rc_new etc.) and size differences (rc_old_len, rc_new_len).
175 */
176 private function rebuildRecentChangesTablePass2() {
177 $dbw = $this->getDB( DB_MASTER );
178
179 $this->output( "Updating links and size differences...\n" );
180
181 # Fill in the rc_last_oldid field, which points to the previous edit
182 $res = $dbw->select(
183 'recentchanges',
184 [ 'rc_cur_id', 'rc_this_oldid', 'rc_timestamp' ],
185 [
186 "rc_timestamp > " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
187 "rc_timestamp < " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) )
188 ],
189 __METHOD__,
190 [ 'ORDER BY' => 'rc_cur_id,rc_timestamp' ]
191 );
192
193 $lastCurId = 0;
194 $lastOldId = 0;
195 $lastSize = null;
196 $updated = 0;
197 foreach ( $res as $obj ) {
198 $new = 0;
199
200 if ( $obj->rc_cur_id != $lastCurId ) {
201 # Switch! Look up the previous last edit, if any
202 $lastCurId = intval( $obj->rc_cur_id );
203 $emit = $obj->rc_timestamp;
204
205 $row = $dbw->selectRow(
206 'revision',
207 [ 'rev_id', 'rev_len' ],
208 [ 'rev_page' => $lastCurId, "rev_timestamp < " . $dbw->addQuotes( $emit ) ],
209 __METHOD__,
210 [ 'ORDER BY' => 'rev_timestamp DESC' ]
211 );
212 if ( $row ) {
213 $lastOldId = intval( $row->rev_id );
214 # Grab the last text size if available
215 $lastSize = !is_null( $row->rev_len ) ? intval( $row->rev_len ) : null;
216 } else {
217 # No previous edit
218 $lastOldId = 0;
219 $lastSize = null;
220 $new = 1; // probably true
221 }
222 }
223
224 if ( $lastCurId == 0 ) {
225 $this->output( "Uhhh, something wrong? No curid\n" );
226 } else {
227 # Grab the entry's text size
228 $size = (int)$dbw->selectField(
229 'revision',
230 'rev_len',
231 [ 'rev_id' => $obj->rc_this_oldid ],
232 __METHOD__
233 );
234
235 $dbw->update(
236 'recentchanges',
237 [
238 'rc_last_oldid' => $lastOldId,
239 'rc_new' => $new,
240 'rc_type' => $new ? RC_NEW : RC_EDIT,
241 'rc_source' => $new === 1
242 ? $dbw->addQuotes( RecentChange::SRC_NEW )
243 : $dbw->addQuotes( RecentChange::SRC_EDIT ),
244 'rc_old_len' => $lastSize,
245 'rc_new_len' => $size,
246 ],
247 [
248 'rc_cur_id' => $lastCurId,
249 'rc_this_oldid' => $obj->rc_this_oldid,
250 'rc_timestamp' => $obj->rc_timestamp // index usage
251 ],
252 __METHOD__
253 );
254
255 $lastOldId = intval( $obj->rc_this_oldid );
256 $lastSize = $size;
257
258 if ( ( ++$updated % $this->mBatchSize ) == 0 ) {
259 wfGetLBFactory()->waitForReplication();
260 }
261 }
262 }
263 }
264
265 /**
266 * Rebuild pass 3: Insert `recentchanges` entries for action logs.
267 */
268 private function rebuildRecentChangesTablePass3() {
269 global $wgLogTypes, $wgLogRestrictions;
270
271 $dbw = $this->getDB( DB_MASTER );
272
273 $this->output( "Loading from user, page, and logging tables...\n" );
274
275 $res = $dbw->select(
276 [ 'user', 'logging', 'page' ],
277 [
278 'log_timestamp',
279 'log_user',
280 'user_name',
281 'log_namespace',
282 'log_title',
283 'log_comment',
284 'page_id',
285 'log_type',
286 'log_action',
287 'log_id',
288 'log_params',
289 'log_deleted'
290 ],
291 [
292 'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
293 'log_timestamp < ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) ),
294 'log_user=user_id',
295 // Some logs don't go in RC since they are private.
296 // @FIXME: core/extensions also have spammy logs that don't go in RC.
297 'log_type' => array_diff( $wgLogTypes, array_keys( $wgLogRestrictions ) ),
298 ],
299 __METHOD__,
300 [ 'ORDER BY' => 'log_timestamp DESC' ],
301 [
302 'page' =>
303 [ 'LEFT JOIN', [ 'log_namespace=page_namespace', 'log_title=page_title' ] ]
304 ]
305 );
306
307 $field = $dbw->fieldInfo( 'recentchanges', 'rc_cur_id' );
308
309 $inserted = 0;
310 foreach ( $res as $row ) {
311 $dbw->insert(
312 'recentchanges',
313 [
314 'rc_timestamp' => $row->log_timestamp,
315 'rc_user' => $row->log_user,
316 'rc_user_text' => $row->user_name,
317 'rc_namespace' => $row->log_namespace,
318 'rc_title' => $row->log_title,
319 'rc_comment' => $row->log_comment,
320 'rc_minor' => 0,
321 'rc_bot' => 0,
322 'rc_patrolled' => 1,
323 'rc_new' => 0,
324 'rc_this_oldid' => 0,
325 'rc_last_oldid' => 0,
326 'rc_type' => RC_LOG,
327 'rc_source' => $dbw->addQuotes( RecentChange::SRC_LOG ),
328 'rc_cur_id' => $field->isNullable()
329 ? $row->page_id
330 : (int)$row->page_id, // NULL => 0,
331 'rc_log_type' => $row->log_type,
332 'rc_log_action' => $row->log_action,
333 'rc_logid' => $row->log_id,
334 'rc_params' => $row->log_params,
335 'rc_deleted' => $row->log_deleted
336 ],
337 __METHOD__
338 );
339
340 if ( ( ++$inserted % $this->mBatchSize ) == 0 ) {
341 wfGetLBFactory()->waitForReplication();
342 }
343 }
344 }
345
346 /**
347 * Rebuild pass 4: Mark bot and autopatrolled entries.
348 */
349 private function rebuildRecentChangesTablePass4() {
350 global $wgUseRCPatrol, $wgMiserMode;
351
352 $dbw = $this->getDB( DB_MASTER );
353
354 list( $recentchanges, $usergroups, $user ) =
355 $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
356
357 # @FIXME: recognize other bot account groups (not the same as users with 'bot' rights)
358 # @NOTE: users with 'bot' rights choose when edits are bot edits or not. That information
359 # may be lost at this point (aside from joining on the patrol log table entries).
360 $botgroups = [ 'bot' ];
361 $autopatrolgroups = $wgUseRCPatrol ? User::getGroupsWithPermission( 'autopatrol' ) : [];
362
363 # Flag our recent bot edits
364 if ( $botgroups ) {
365 $botwhere = $dbw->makeList( $botgroups );
366
367 $this->output( "Flagging bot account edits...\n" );
368
369 # Find all users that are bots
370 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
371 "WHERE ug_group IN($botwhere) AND user_id = ug_user";
372 $res = $dbw->query( $sql, __METHOD__ );
373
374 $botusers = [];
375 foreach ( $res as $obj ) {
376 $botusers[] = $obj->user_name;
377 }
378
379 # Fill in the rc_bot field
380 if ( $botusers ) {
381 $rcids = $dbw->selectFieldValues(
382 'recentchanges',
383 'rc_id',
384 [
385 'rc_user_text' => $botusers,
386 "rc_timestamp > " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
387 "rc_timestamp < " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) )
388 ],
389 __METHOD__
390 );
391
392 foreach ( array_chunk( $rcids, $this->mBatchSize ) as $rcidBatch ) {
393 $dbw->update(
394 'recentchanges',
395 [ 'rc_bot' => 1 ],
396 [ 'rc_id' => $rcidBatch ],
397 __METHOD__
398 );
399 wfGetLBFactory()->waitForReplication();
400 }
401 }
402 }
403
404 # Flag our recent autopatrolled edits
405 if ( !$wgMiserMode && $autopatrolgroups ) {
406 $patrolwhere = $dbw->makeList( $autopatrolgroups );
407 $patrolusers = [];
408
409 $this->output( "Flagging auto-patrolled edits...\n" );
410
411 # Find all users in RC with autopatrol rights
412 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
413 "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
414 $res = $dbw->query( $sql, __METHOD__ );
415
416 foreach ( $res as $obj ) {
417 $patrolusers[] = $dbw->addQuotes( $obj->user_name );
418 }
419
420 # Fill in the rc_patrolled field
421 if ( $patrolusers ) {
422 $patrolwhere = implode( ',', $patrolusers );
423 $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
424 "WHERE rc_user_text IN($patrolwhere) " .
425 "AND rc_timestamp > " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ) . ' ' .
426 "AND rc_timestamp < " . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) );
427 $dbw->query( $sql2 );
428 }
429 }
430 }
431
432 /**
433 * Rebuild pass 5: Delete duplicate entries where we generate both a page revision and a log entry
434 * for a single action (upload only, at the moment, but potentially also move, protect, ...).
435 */
436 private function rebuildRecentChangesTablePass5() {
437 $dbw = wfGetDB( DB_MASTER );
438
439 $this->output( "Removing duplicate revision and logging entries...\n" );
440
441 $res = $dbw->select(
442 [ 'logging', 'log_search' ],
443 [ 'ls_value', 'ls_log_id' ],
444 [
445 'ls_log_id = log_id',
446 'ls_field' => 'associated_rev_id',
447 'log_type' => 'upload',
448 'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffFrom ) ),
449 'log_timestamp < ' . $dbw->addQuotes( $dbw->timestamp( $this->cutoffTo ) ),
450 ],
451 __METHOD__
452 );
453
454 $updates = 0;
455 foreach ( $res as $obj ) {
456 $rev_id = $obj->ls_value;
457 $log_id = $obj->ls_log_id;
458
459 // Mark the logging row as having an associated rev id
460 $dbw->update(
461 'recentchanges',
462 /*SET*/ [ 'rc_this_oldid' => $rev_id ],
463 /*WHERE*/ [ 'rc_logid' => $log_id ],
464 __METHOD__
465 );
466
467 // Delete the revision row
468 $dbw->delete(
469 'recentchanges',
470 /*WHERE*/ [ 'rc_this_oldid' => $rev_id, 'rc_logid' => 0 ],
471 __METHOD__
472 );
473
474 if ( ( ++$updates % $this->mBatchSize ) == 0 ) {
475 wfGetLBFactory()->waitForReplication();
476 }
477 }
478 }
479
480 /**
481 * Purge cached feeds in $messageMemc
482 */
483 private function purgeFeeds() {
484 global $wgFeedClasses, $messageMemc;
485
486 $this->output( "Deleting feed timestamps.\n" );
487
488 foreach ( $wgFeedClasses as $feed => $className ) {
489 $messageMemc->delete( wfMemcKey( 'rcfeed', $feed, 'timestamp' ) ); # Good enough for now.
490 }
491 }
492 }
493
494 $maintClass = "RebuildRecentchanges";
495 require_once RUN_MAINTENANCE_IF_MAIN;
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