* @file
*/
use MediaWiki\MediaWikiServices;
- use MediaWiki\Storage\MutableRevisionRecord;
- use MediaWiki\Storage\RevisionRecord;
- use MediaWiki\Storage\SlotRecord;
+ use MediaWiki\Revision\MutableRevisionRecord;
+ use MediaWiki\Revision\RevisionRecord;
+ use MediaWiki\Revision\SlotRecord;
/**
* Class for viewing MediaWiki article and history.
* Perform a deletion and output success or failure messages
* @param string $reason
* @param bool $suppress
+ * @param bool $immediate false allows deleting over time via the job queue
+ * @throws FatalError
+ * @throws MWException
*/
- public function doDelete( $reason, $suppress = false ) {
+ public function doDelete( $reason, $suppress = false, $immediate = false ) {
$error = '';
$context = $this->getContext();
$outputPage = $context->getOutput();
$user = $context->getUser();
- $status = $this->mPage->doDeleteArticleReal( $reason, $suppress, 0, true, $error, $user );
+ $status = $this->mPage->doDeleteArticleReal( $reason, $suppress, 0, true, $error, $user,
+ [], 'delete', $immediate );
- if ( $status->isGood() ) {
+ if ( $status->isOK() ) {
$deleted = $this->getTitle()->getPrefixedText();
$outputPage->setPageTitle( wfMessage( 'actioncomplete' ) );
$outputPage->setRobotPolicy( 'noindex,nofollow' );
- $loglink = '[[Special:Log/delete|' . wfMessage( 'deletionlog' )->text() . ']]';
-
- $outputPage->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
-
- Hooks::run( 'ArticleDeleteAfterSuccess', [ $this->getTitle(), $outputPage ] );
+ if ( $status->isGood() ) {
+ $loglink = '[[Special:Log/delete|' . wfMessage( 'deletionlog' )->text() . ']]';
+ $outputPage->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
+ Hooks::run( 'ArticleDeleteAfterSuccess', [ $this->getTitle(), $outputPage ] );
+ } else {
+ $outputPage->addWikiMsg( 'delete-scheduled', wfEscapeWikiText( $deleted ) );
+ }
$outputPage->returnToMain( false );
} else {
*/
public function doDeleteArticleReal(
$reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $user = null,
- $tags = []
+ $tags = [], $immediate = false
) {
return $this->mPage->doDeleteArticleReal(
- $reason, $suppress, $u1, $u2, $error, $user, $tags
+ $reason, $suppress, $u1, $u2, $error, $user, $tags, 'delete', $immediate
);
}
* @param int|null $u1 Unused
* @param bool|null $u2 Unused
* @param string &$error
+ * @param bool $immediate false allows deleting over time via the job queue
* @return bool
+ * @throws FatalError
+ * @throws MWException
*/
public function doDeleteArticle(
- $reason, $suppress = false, $u1 = null, $u2 = null, &$error = ''
+ $reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', $immediate = false
) {
- return $this->mPage->doDeleteArticle( $reason, $suppress, $u1, $u2, $error );
+ return $this->mPage->doDeleteArticle( $reason, $suppress, $u1, $u2, $error,
+ null, $immediate );
}
/**
use MediaWiki\Edit\PreparedEdit;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\MediaWikiServices;
+ use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\RevisionRenderer;
+ use MediaWiki\Revision\RevisionStore;
+ use MediaWiki\Revision\SlotRecord;
use MediaWiki\Storage\DerivedPageDataUpdater;
use MediaWiki\Storage\PageUpdater;
- use MediaWiki\Storage\RevisionRecord;
use MediaWiki\Storage\RevisionSlotsUpdate;
- use MediaWiki\Storage\RevisionStore;
- use MediaWiki\Storage\SlotRecord;
use Wikimedia\Assert\Assert;
use Wikimedia\Rdbms\FakeResultWrapper;
use Wikimedia\Rdbms\IDatabase;
return implode( ':', $bits );
}
+ /**
+ * Determines if deletion of this page would be batched (executed over time by the job queue)
+ * or not (completed in the same request as the delete call).
+ *
+ * It is unlikely but possible that an edit from another request could push the page over the
+ * batching threshold after this function is called, but before the caller acts upon the
+ * return value. Callers must decide for themselves how to deal with this. $safetyMargin
+ * is provided as an unreliable but situationally useful help for some common cases.
+ *
+ * @param int $safetyMargin Added to the revision count when checking for batching
+ * @return bool True if deletion would be batched, false otherwise
+ */
+ public function isBatchedDelete( $safetyMargin = 0 ) {
+ global $wgDeleteRevisionsBatchSize;
+
+ $dbr = wfGetDB( DB_REPLICA );
+ $revCount = $this->getRevisionStore()->countRevisionsByPageId( $dbr, $this->getId() );
+ $revCount += $safetyMargin;
+
+ return $revCount >= $wgDeleteRevisionsBatchSize;
+ }
+
/**
* Same as doDeleteArticleReal(), but returns a simple boolean. This is kept around for
* backwards compatibility, if you care about error reporting you should use
* @param bool|null $u2 Unused
* @param array|string &$error Array of errors to append to
* @param User|null $user The deleting user
+ * @param bool $immediate false allows deleting over time via the job queue
* @return bool True if successful
+ * @throws FatalError
+ * @throws MWException
*/
public function doDeleteArticle(
- $reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $user = null
+ $reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $user = null,
+ $immediate = false
) {
- $status = $this->doDeleteArticleReal( $reason, $suppress, $u1, $u2, $error, $user );
- return $status->isGood();
+ $status = $this->doDeleteArticleReal( $reason, $suppress, $u1, $u2, $error, $user,
+ [], 'delete', $immediate );
+
+ // Returns true if the page was actually deleted, or is scheduled for deletion
+ return $status->isOK();
}
/**
* @param User|null $deleter The deleting user
* @param array $tags Tags to apply to the deletion action
* @param string $logsubtype
+ * @param bool $immediate false allows deleting over time via the job queue
* @return Status Status object; if successful, $status->value is the log_id of the
* deletion log entry. If the page couldn't be deleted because it wasn't
* found, $status is a non-fatal 'cannotdelete' error
+ * @throws FatalError
+ * @throws MWException
*/
public function doDeleteArticleReal(
$reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $deleter = null,
- $tags = [], $logsubtype = 'delete'
+ $tags = [], $logsubtype = 'delete', $immediate = false
) {
- global $wgUser, $wgContentHandlerUseDB, $wgCommentTableSchemaMigrationStage,
- $wgActorTableSchemaMigrationStage, $wgMultiContentRevisionSchemaMigrationStage;
+ global $wgUser;
wfDebug( __METHOD__ . "\n" );
$status = Status::newGood();
- if ( $this->mTitle->getDBkey() === '' ) {
- $status->error( 'cannotdelete',
- wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) );
- return $status;
- }
-
// Avoid PHP 7.1 warning of passing $this by reference
$wikiPage = $this;
return $status;
}
+ return $this->doDeleteArticleBatched( $reason, $suppress, $deleter, $tags,
+ $logsubtype, $immediate );
+ }
+
+ /**
+ * Back-end article deletion
+ *
+ * Only invokes batching via the job queue if necessary per $wgDeleteRevisionsBatchSize.
+ * Deletions can often be completed inline without involving the job queue.
+ *
+ * Potentially called many times per deletion operation for pages with many revisions.
+ */
+ public function doDeleteArticleBatched(
+ $reason, $suppress, User $deleter, $tags,
+ $logsubtype, $immediate = false, $webRequestId = null
+ ) {
+ wfDebug( __METHOD__ . "\n" );
+
+ $status = Status::newGood();
+
$dbw = wfGetDB( DB_MASTER );
$dbw->startAtomic( __METHOD__ );
return $status;
}
- // Given the lock above, we can be confident in the title and page ID values
- $namespace = $this->getTitle()->getNamespace();
- $dbKey = $this->getTitle()->getDBkey();
-
- // At this point we are now comitted to returning an OK
+ // At this point we are now committed to returning an OK
// status unless some DB query error or other exception comes up.
// This way callers don't have to call rollback() if $status is bad
// unless they actually try to catch exceptions (which is rare).
$content = null;
}
+ // Archive revisions. In immediate mode, archive all revisions. Otherwise, archive
+ // one batch of revisions and defer archival of any others to the job queue.
+ $explictTrxLogged = false;
+ while ( true ) {
+ $done = $this->archiveRevisions( $dbw, $id, $suppress );
+ if ( $done || !$immediate ) {
+ break;
+ }
+ $dbw->endAtomic( __METHOD__ );
+ if ( $dbw->explicitTrxActive() ) {
+ // Explict transactions may never happen here in practice. Log to be sure.
+ if ( !$explictTrxLogged ) {
+ $explictTrxLogged = true;
+ LoggerFactory::getInstance( 'wfDebug' )->debug(
+ 'explicit transaction active in ' . __METHOD__ . ' while deleting {title}', [
+ 'title' => $this->getTitle()->getText(),
+ ] );
+ }
+ continue;
+ }
+ if ( $dbw->trxLevel() ) {
+ $dbw->commit();
+ }
+ $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
+ $lbFactory->waitForReplication();
+ $dbw->startAtomic( __METHOD__ );
+ }
+
+ // If done archiving, also delete the article.
+ if ( !$done ) {
+ $dbw->endAtomic( __METHOD__ );
+
+ $jobParams = [
+ 'wikiPageId' => $id,
+ 'requestId' => $webRequestId ?? WebRequest::getRequestId(),
+ 'reason' => $reason,
+ 'suppress' => $suppress,
+ 'userId' => $deleter->getId(),
+ 'tags' => json_encode( $tags ),
+ 'logsubtype' => $logsubtype,
+ ];
+
+ $job = new DeletePageJob( $this->getTitle(), $jobParams );
+ JobQueueGroup::singleton()->push( $job );
+
+ $status->warning( 'delete-scheduled',
+ wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) );
+ } else {
+ // Get archivedRevisionCount by db query, because there's no better alternative.
+ // Jobs cannot pass a count of archived revisions to the next job, because additional
+ // deletion operations can be started while the first is running. Jobs from each
+ // gracefully interleave, but would not know about each other's count. Deduplication
+ // in the job queue to avoid simultaneous deletion operations would add overhead.
+ // Number of archived revisions cannot be known beforehand, because edits can be made
+ // while deletion operations are being processed, changing the number of archivals.
+ $archivedRevisionCount = $dbw->selectRowCount(
+ 'archive', '1', [ 'ar_page_id' => $id ], __METHOD__
+ );
+
+ // Clone the title and wikiPage, so we have the information we need when
+ // we log and run the ArticleDeleteComplete hook.
+ $logTitle = clone $this->mTitle;
+ $wikiPageBeforeDelete = clone $this;
+
+ // Now that it's safely backed up, delete it
+ $dbw->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
+
+ // Log the deletion, if the page was suppressed, put it in the suppression log instead
+ $logtype = $suppress ? 'suppress' : 'delete';
+
+ $logEntry = new ManualLogEntry( $logtype, $logsubtype );
+ $logEntry->setPerformer( $deleter );
+ $logEntry->setTarget( $logTitle );
+ $logEntry->setComment( $reason );
+ $logEntry->setTags( $tags );
+ $logid = $logEntry->insert();
+
+ $dbw->onTransactionPreCommitOrIdle(
+ function () use ( $logEntry, $logid ) {
+ // T58776: avoid deadlocks (especially from FileDeleteForm)
+ $logEntry->publish( $logid );
+ },
+ __METHOD__
+ );
+
+ $dbw->endAtomic( __METHOD__ );
+
+ $this->doDeleteUpdates( $id, $content, $revision, $deleter );
+
+ Hooks::run( 'ArticleDeleteComplete', [
+ &$wikiPageBeforeDelete,
+ &$deleter,
+ $reason,
+ $id,
+ $content,
+ $logEntry,
+ $archivedRevisionCount
+ ] );
+ $status->value = $logid;
+
+ // Show log excerpt on 404 pages rather than just a link
+ $cache = MediaWikiServices::getInstance()->getMainObjectStash();
+ $key = $cache->makeKey( 'page-recent-delete', md5( $logTitle->getPrefixedText() ) );
+ $cache->set( $key, 1, $cache::TTL_DAY );
+ }
+
+ return $status;
+ }
+
+ /**
+ * Archives revisions as part of page deletion.
+ *
+ * @param IDatabase $dbw
+ * @param int $id
+ * @param bool $suppress Suppress all revisions and log the deletion in
+ * the suppression log instead of the deletion log
+ * @return bool
+ */
+ protected function archiveRevisions( $dbw, $id, $suppress ) {
+ global $wgContentHandlerUseDB, $wgMultiContentRevisionSchemaMigrationStage,
+ $wgCommentTableSchemaMigrationStage, $wgActorTableSchemaMigrationStage,
+ $wgDeleteRevisionsBatchSize;
+
+ // Given the lock above, we can be confident in the title and page ID values
+ $namespace = $this->getTitle()->getNamespace();
+ $dbKey = $this->getTitle()->getDBkey();
+
$commentStore = CommentStore::getStore();
$actorMigration = ActorMigration::newMigration();
}
}
- // Get all of the page revisions
+ // Get as many of the page revisions as we are allowed to. The +1 lets us recognize the
+ // unusual case where there were exactly $wgDeleteRevisionBatchSize revisions remaining.
$res = $dbw->select(
$revQuery['tables'],
$revQuery['fields'],
[ 'rev_page' => $id ],
__METHOD__,
- [],
+ [ 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => $wgDeleteRevisionsBatchSize + 1 ],
$revQuery['joins']
);
/** @var int[] Revision IDs of edits that were made by IPs */
$ipRevIds = [];
+ $done = true;
foreach ( $res as $row ) {
+ if ( count( $revids ) >= $wgDeleteRevisionsBatchSize ) {
+ $done = false;
+ break;
+ }
+
$comment = $commentStore->getComment( 'rev_comment', $row );
$user = User::newFromAnyId( $row->rev_user, $row->rev_user_text, $row->rev_actor );
$rowInsert = [
- 'ar_namespace' => $namespace,
- 'ar_title' => $dbKey,
- 'ar_timestamp' => $row->rev_timestamp,
- 'ar_minor_edit' => $row->rev_minor_edit,
- 'ar_rev_id' => $row->rev_id,
- 'ar_parent_id' => $row->rev_parent_id,
+ 'ar_namespace' => $namespace,
+ 'ar_title' => $dbKey,
+ 'ar_timestamp' => $row->rev_timestamp,
+ 'ar_minor_edit' => $row->rev_minor_edit,
+ 'ar_rev_id' => $row->rev_id,
+ 'ar_parent_id' => $row->rev_parent_id,
/**
* ar_text_id should probably not be written to when the multi content schema has
* been migrated to (wgMultiContentRevisionSchemaMigrationStage) however there is no
* Task: https://phabricator.wikimedia.org/T190148
* Copying the value from the revision table should not lead to any issues for now.
*/
- 'ar_len' => $row->rev_len,
- 'ar_page_id' => $id,
- 'ar_deleted' => $suppress ? $bitfield : $row->rev_deleted,
- 'ar_sha1' => $row->rev_sha1,
- ] + $commentStore->insert( $dbw, 'ar_comment', $comment )
+ 'ar_len' => $row->rev_len,
+ 'ar_page_id' => $id,
+ 'ar_deleted' => $suppress ? $bitfield : $row->rev_deleted,
+ 'ar_sha1' => $row->rev_sha1,
+ ] + $commentStore->insert( $dbw, 'ar_comment', $comment )
+ $actorMigration->getInsertValues( $dbw, 'ar_user', $user );
if ( $wgMultiContentRevisionSchemaMigrationStage & SCHEMA_COMPAT_WRITE_OLD ) {
$ipRevIds[] = $row->rev_id;
}
}
- // Copy them into the archive table
- $dbw->insert( 'archive', $rowsInsert, __METHOD__ );
- // Save this so we can pass it to the ArticleDeleteComplete hook.
- $archivedRevisionCount = $dbw->affectedRows();
- // Clone the title and wikiPage, so we have the information we need when
- // we log and run the ArticleDeleteComplete hook.
- $logTitle = clone $this->mTitle;
- $wikiPageBeforeDelete = clone $this;
+ // This conditional is just a sanity check
+ if ( count( $revids ) > 0 ) {
+ // Copy them into the archive table
+ $dbw->insert( 'archive', $rowsInsert, __METHOD__ );
- // Now that it's safely backed up, delete it
- $dbw->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
- $dbw->delete( 'revision', [ 'rev_page' => $id ], __METHOD__ );
- if ( $wgCommentTableSchemaMigrationStage > MIGRATION_OLD ) {
- $dbw->delete( 'revision_comment_temp', [ 'revcomment_rev' => $revids ], __METHOD__ );
- }
- if ( $wgActorTableSchemaMigrationStage > MIGRATION_OLD ) {
- $dbw->delete( 'revision_actor_temp', [ 'revactor_rev' => $revids ], __METHOD__ );
- }
+ $dbw->delete( 'revision', [ 'rev_id' => $revids ], __METHOD__ );
+ if ( $wgCommentTableSchemaMigrationStage > MIGRATION_OLD ) {
+ $dbw->delete( 'revision_comment_temp', [ 'revcomment_rev' => $revids ], __METHOD__ );
+ }
+ if ( $wgActorTableSchemaMigrationStage > MIGRATION_OLD ) {
+ $dbw->delete( 'revision_actor_temp', [ 'revactor_rev' => $revids ], __METHOD__ );
+ }
- // Also delete records from ip_changes as applicable.
- if ( count( $ipRevIds ) > 0 ) {
- $dbw->delete( 'ip_changes', [ 'ipc_rev_id' => $ipRevIds ], __METHOD__ );
+ // Also delete records from ip_changes as applicable.
+ if ( count( $ipRevIds ) > 0 ) {
+ $dbw->delete( 'ip_changes', [ 'ipc_rev_id' => $ipRevIds ], __METHOD__ );
+ }
}
- // Log the deletion, if the page was suppressed, put it in the suppression log instead
- $logtype = $suppress ? 'suppress' : 'delete';
-
- $logEntry = new ManualLogEntry( $logtype, $logsubtype );
- $logEntry->setPerformer( $deleter );
- $logEntry->setTarget( $logTitle );
- $logEntry->setComment( $reason );
- $logEntry->setTags( $tags );
- $logid = $logEntry->insert();
-
- $dbw->onTransactionPreCommitOrIdle(
- function () use ( $logEntry, $logid ) {
- // T58776: avoid deadlocks (especially from FileDeleteForm)
- $logEntry->publish( $logid );
- },
- __METHOD__
- );
-
- $dbw->endAtomic( __METHOD__ );
-
- $this->doDeleteUpdates( $id, $content, $revision, $deleter );
-
- Hooks::run( 'ArticleDeleteComplete', [
- &$wikiPageBeforeDelete,
- &$deleter,
- $reason,
- $id,
- $content,
- $logEntry,
- $archivedRevisionCount
- ] );
- $status->value = $logid;
-
- // Show log excerpt on 404 pages rather than just a link
- $cache = MediaWikiServices::getInstance()->getMainObjectStash();
- $key = $cache->makeKey( 'page-recent-delete', md5( $logTitle->getPrefixedText() ) );
- $cache->set( $key, 1, $cache::TTL_DAY );
-
- return $status;
+ return $done;
}
/**
dépôts / lhc / web / wiklou.git / commitdiff