mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-11-11 17:00:10 +00:00
820 lines
20 KiB
PHP
820 lines
20 KiB
PHP
<?php
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namespace MediaWiki\Extension\Notifications\Model;
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use Exception;
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use InvalidArgumentException;
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use MediaWiki\Extension\Notifications\Bundleable;
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use MediaWiki\Extension\Notifications\Controller\NotificationController;
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use MediaWiki\Extension\Notifications\DbFactory;
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use MediaWiki\Extension\Notifications\Hooks\HookRunner;
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use MediaWiki\Extension\Notifications\Mapper\EventMapper;
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use MediaWiki\Extension\Notifications\Mapper\TargetPageMapper;
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use MediaWiki\Extension\Notifications\Services;
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use MediaWiki\Logger\LoggerFactory;
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use MediaWiki\MediaWikiServices;
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use MediaWiki\Revision\RevisionRecord;
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use MediaWiki\Title\Title;
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use MediaWiki\User\User;
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use MediaWiki\User\UserIdentity;
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use RuntimeException;
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use stdClass;
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use Wikimedia\Rdbms\IDBAccessObject;
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/**
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* Immutable class to represent an event.
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* In Echo nomenclature, an event is a single occurrence.
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*/
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class Event extends AbstractEntity implements Bundleable {
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/** @var string|null */
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protected $type = null;
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/** @var int|null|false */
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protected $id = null;
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/** @var string|null */
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protected $variant = null;
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/**
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* @var User|null
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*/
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protected $agent = null;
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/**
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* Loaded dynamically on request
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*
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* @var Title|null
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*/
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protected $title = null;
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/** @var int|null */
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protected $pageId = null;
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/**
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* Loaded dynamically on request
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*
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* @var RevisionRecord|null
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*/
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protected $revision = null;
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/** @var array */
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protected $extra = [];
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/**
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* Notification timestamp
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* @var string|null
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*/
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protected $timestamp = null;
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/**
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* A hash used to bundle a set of events, events that can be
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* grouped for a user has the same bundle hash
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* @var string|null
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*/
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protected $bundleHash;
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/**
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* Other events bundled with this one
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*
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* @var Event[]
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*/
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protected $bundledEvents;
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/**
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* Deletion flag
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*
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* @var int
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*/
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protected $deleted = 0;
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/** For use in tests */
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public static bool $alwaysInsert = false;
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/**
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* You should not call the constructor.
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* Instead, use one of the factory functions:
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* Event::create To create a new event
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* Event::newFromRow To create an event object from a row object
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* Event::newFromID To create an event object from the database given its ID
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*/
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protected function __construct() {
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}
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## Save the id and timestamp
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public function __sleep() {
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if ( !$this->id ) {
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throw new RuntimeException( "Unable to serialize an uninitialized Event" );
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}
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return [ 'id', 'timestamp' ];
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}
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public function __wakeup() {
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$this->loadFromID( $this->id );
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}
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public function __toString() {
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return "Event(id={$this->id}; type={$this->type})";
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}
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/**
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* Creates an Event object
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* @param array $info Named arguments:
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* type (required): The event type;
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* variant: A variant of the type;
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* agent: The user who caused the event;
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* title: The page on which the event was triggered;
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* extra: Event-specific extra information (e.g. post content, delay time, root job params).
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*
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* Delayed jobs extra params:
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* delay: Amount of time in seconds for the notification to be delayed
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*
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* Job deduplication extra params:
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* rootJobSignature: The sha1 signature of the job
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* rootJobTimestamp: The timestamp when the job gets submitted
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*
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* For example to enqueue a new `example` root job or make a parent job
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* no-op when submitting a new notification you need to pass this extra params:
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*
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* [ 'extra' => Job::newRootJobParams('example') ]
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*
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* @return Event|false False if aborted via hook or Echo DB is read-only
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*/
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public static function create( $info = [] ) {
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global $wgEchoNotifications;
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$services = MediaWikiServices::getInstance();
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// Do not create event and notifications if write access is locked
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if ( $services->getReadOnlyMode()->isReadOnly()
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|| DbFactory::newFromDefault()->getEchoDb( DB_PRIMARY )->isReadOnly()
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) {
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return false;
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}
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$obj = new Event;
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static $validFields = [ 'type', 'variant', 'agent', 'title', 'extra' ];
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if ( empty( $info['type'] ) ) {
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throw new InvalidArgumentException( "'type' parameter is mandatory" );
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}
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if ( !isset( $wgEchoNotifications[$info['type']] ) ) {
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return false;
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}
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$obj->id = false;
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$obj->timestamp = $info['timestamp'] ?? wfTimestampNow();
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foreach ( $validFields as $field ) {
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if ( isset( $info[$field] ) ) {
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$obj->$field = $info[$field];
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}
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}
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// If the extra size is more than 50000 bytes, that means there is
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// probably a problem with the design of this notification type.
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// There might be data loss if the size exceeds the DB column size of
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// event_extra.
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if ( strlen( $obj->serializeExtra() ) > 50000 ) {
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wfDebugLog( __CLASS__, __FUNCTION__ . ': event extra data is too huge for ' . $info['type'] );
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return false;
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}
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if ( $obj->title ) {
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if ( !$obj->title instanceof Title ) {
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throw new InvalidArgumentException( 'Invalid title parameter' );
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}
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$obj->setTitle( $obj->title );
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}
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if ( $obj->agent ) {
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if ( !$obj->agent instanceof UserIdentity ) {
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throw new InvalidArgumentException( "Invalid user parameter" );
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}
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// RevisionStore returns UserIdentityValue now, convert to User for passing to hooks.
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if ( !$obj->agent instanceof User ) {
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$obj->agent = $services->getUserFactory()->newFromUserIdentity( $obj->agent );
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}
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}
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$hookRunner = new HookRunner( $services->getHookContainer() );
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if ( !$hookRunner->onBeforeEchoEventInsert( $obj ) ) {
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return false;
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}
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// @Todo - Database insert logic should not be inside the model
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if ( self::$alwaysInsert ) {
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$obj->insert();
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}
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global $wgEchoUseJobQueue;
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NotificationController::notify( $obj, $wgEchoUseJobQueue );
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return $obj;
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}
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/**
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* Convert the object's database property to array
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* @return array
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*/
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public function toDbArray() {
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$data = [
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'event_type' => $this->type,
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'event_variant' => $this->variant,
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'event_deleted' => $this->deleted,
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'event_extra' => $this->serializeExtra()
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];
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if ( $this->id ) {
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$data['event_id'] = $this->id;
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}
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if ( $this->agent ) {
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if ( !$this->agent->isRegistered() ) {
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$data['event_agent_ip'] = $this->agent->getName();
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} else {
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$data['event_agent_id'] = $this->agent->getId();
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}
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}
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if ( $this->pageId ) {
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$data['event_page_id'] = $this->pageId;
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} elseif ( $this->title ) {
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$pageId = $this->title->getArticleID();
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// Don't need any special handling for title with no id
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// as they are already stored in extra data array
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if ( $pageId ) {
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$data['event_page_id'] = $pageId;
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}
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}
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return $data;
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}
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/**
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* Creates an Event from an array. The array should be output from ::toDbArray().
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*
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* @param array $data
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* @return self
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*/
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public static function newFromArray( $data ) {
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$obj = new self();
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if ( isset( $data['event_id'] ) ) {
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$obj->id = $data['event_id'];
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}
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$obj->type = $data['event_type'];
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$obj->variant = $data['event_variant'];
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$obj->extra = $data['event_extra'] ? unserialize( $data['event_extra'] ) : [];
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if ( isset( $data['event_page_id'] ) ) {
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$obj->pageId = $data['event_page_id'];
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}
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$obj->deleted = $data['event_deleted'];
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if ( $data['event_agent_id'] ?? 0 ) {
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$obj->agent = User::newFromId( $data['event_agent_id'] );
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} elseif ( isset( $data['event_agent_ip'] ) ) {
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$obj->agent = User::newFromName( $data['event_agent_ip'], false );
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}
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return $obj;
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}
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/**
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* Check whether the echo event is an enabled event
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* @return bool
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*/
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public function isEnabledEvent(): bool {
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global $wgEchoNotifications;
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return isset( $wgEchoNotifications[$this->getType()] );
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}
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/**
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* Insert this event into the database if it hasn't been yet, and return its id.
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* Subsequent calls on this instance will not cause repeated insertion
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* and will always return the same id.
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* @return int
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*/
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public function acquireId() {
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if ( !$this->id ) {
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$this->insert();
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}
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return $this->id;
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}
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/**
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* Inserts the object into the database.
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*/
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protected function insert() {
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$eventMapper = new EventMapper();
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$this->id = $eventMapper->insert( $this );
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$targetPages = self::resolveTargetPages( $this->getExtraParam( 'target-page' ) );
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if ( $targetPages ) {
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$targetMapper = new TargetPageMapper();
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foreach ( $targetPages as $title ) {
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$targetPage = TargetPage::create( $title, $this );
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if ( $targetPage ) {
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$targetMapper->insert( $targetPage );
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}
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}
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}
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$services = MediaWikiServices::getInstance();
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$hookRunner = new HookRunner( $services->getHookContainer() );
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$hookRunner->onEventInsertComplete( $this );
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$stats = $services->getStatsdDataFactory();
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$type = $this->getType();
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$stats->increment( 'echo.event.all' );
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$stats->increment( "echo.event.$type" );
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}
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/**
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* @param int[]|int|false $targetPageIds
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* @return Title[]
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*/
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protected static function resolveTargetPages( $targetPageIds ) {
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if ( !$targetPageIds ) {
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return [];
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}
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if ( !is_array( $targetPageIds ) ) {
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$targetPageIds = [ $targetPageIds ];
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}
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$result = [];
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foreach ( $targetPageIds as $targetPageId ) {
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// Make sure the target-page id is a valid id
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$title = Title::newFromID( $targetPageId );
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// Try primary database if there is no match
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if ( !$title ) {
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$title = Title::newFromID( $targetPageId, IDBAccessObject::READ_LATEST );
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}
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if ( $title ) {
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$result[] = $title;
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}
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}
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return $result;
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}
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/**
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* Loads data from the provided $row into this object.
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*
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* @param stdClass $row row object from echo_event
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* @return bool Whether loading was successful
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*/
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public function loadFromRow( $row ) {
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$this->id = (int)$row->event_id;
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$this->type = $row->event_type;
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// If the object is loaded from __sleep(), timestamp should be already set
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if ( !$this->timestamp ) {
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if ( isset( $row->notification_timestamp ) ) {
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$this->timestamp = wfTimestamp( TS_MW, $row->notification_timestamp );
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} else {
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$this->timestamp = wfTimestampNow();
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}
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}
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$this->variant = $row->event_variant;
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try {
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$this->extra = $row->event_extra ? unserialize( $row->event_extra ) : [];
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} catch ( Exception $e ) {
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// T73489: unserializing can fail for old notifications
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LoggerFactory::getInstance( 'Echo' )->warning(
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'Failed to unserialize event {id}',
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[
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'id' => $row->event_id
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]
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);
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return false;
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}
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$this->pageId = $row->event_page_id;
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$this->deleted = $row->event_deleted;
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if ( $row->event_agent_id ) {
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$this->agent = User::newFromId( (int)$row->event_agent_id );
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} elseif ( $row->event_agent_ip ) {
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$this->agent = User::newFromName( (string)$row->event_agent_ip, false );
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}
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// Lazy load the title from getTitle() so that we can do a batch-load
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if (
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isset( $this->extra['page_title'] ) && isset( $this->extra['page_namespace'] )
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&& !$row->event_page_id
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) {
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$this->title = Title::makeTitleSafe(
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$this->extra['page_namespace'],
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$this->extra['page_title']
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);
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}
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if ( $row->event_page_id ) {
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$titleCache = Services::getInstance()->getTitleLocalCache();
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$titleCache->add( (int)$row->event_page_id );
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}
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if ( isset( $this->extra['revid'] ) && $this->extra['revid'] ) {
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$revisionCache = Services::getInstance()->getRevisionLocalCache();
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$revisionCache->add( $this->extra['revid'] );
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}
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return true;
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}
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/**
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* Loads data from the database into this object, given the event ID.
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* @param int $id Event ID
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* @param bool $fromPrimary
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* @return bool Whether it loaded successfully
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*/
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public function loadFromID( $id, $fromPrimary = false ) {
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$eventMapper = new EventMapper();
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$event = $eventMapper->fetchById( $id, $fromPrimary );
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if ( !$event ) {
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return false;
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}
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// Copy over the attribute
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$this->id = $event->id;
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$this->type = $event->type;
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$this->variant = $event->variant;
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$this->extra = $event->extra;
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$this->pageId = $event->pageId;
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$this->agent = $event->agent;
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$this->title = $event->title;
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$this->deleted = $event->deleted;
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// Don't overwrite timestamp if it exists already
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if ( !$this->timestamp ) {
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$this->timestamp = $event->timestamp;
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}
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return true;
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}
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/**
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* Creates an Event from a row object
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*
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* @param stdClass $row row object from echo_event
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* @return Event|false
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*/
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public static function newFromRow( $row ) {
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$obj = new Event();
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return $obj->loadFromRow( $row )
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? $obj
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: false;
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}
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/**
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* Creates an Event from the database by ID
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*
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* @param int $id Event ID
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* @return Event|false
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*/
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public static function newFromID( $id ) {
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$obj = new Event();
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return $obj->loadFromID( $id )
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? $obj
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: false;
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}
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/**
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* Serialize the extra data for event
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* @return string|null
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*/
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public function serializeExtra() {
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if ( is_array( $this->extra ) || is_object( $this->extra ) ) {
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$extra = serialize( $this->extra );
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} elseif ( $this->extra === null ) {
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$extra = null;
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} else {
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$extra = serialize( [ $this->extra ] );
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}
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return $extra;
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}
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/**
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* Determine if the current user is allowed to view a particular
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* field of this revision, if it's marked as deleted. When no
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* revision is attached always returns true.
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*
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* @param int $field One of RevisionRecord::DELETED_TEXT,
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* RevisionRecord::DELETED_COMMENT,
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* RevisionRecord::DELETED_USER
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* @param User $user User object to check
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* @return bool
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*/
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public function userCan( $field, User $user ) {
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$revision = $this->getRevision();
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// User is handled specially
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if ( $field === RevisionRecord::DELETED_USER ) {
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$agent = $this->getAgent();
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if ( !$agent ) {
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// No user associated, so they can see it.
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return true;
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}
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if (
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$revision
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&& $agent->getName() === $revision->getUser( RevisionRecord::RAW )->getName()
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) {
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// If the agent and the revision user are the same, use rev_deleted
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return $revision->audienceCan( $field, RevisionRecord::FOR_THIS_USER, $user );
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} else {
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// Use User::isHidden()
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$permManager = MediaWikiServices::getInstance()->getPermissionManager();
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return $permManager->userHasAnyRight( $user, 'viewsuppressed', 'hideuser' )
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|| !$agent->isHidden();
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}
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} elseif ( $revision ) {
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// A revision is set, use rev_deleted
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return $revision->audienceCan( $field, RevisionRecord::FOR_THIS_USER, $user );
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} else {
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// Not a user, and there is no associated revision, so the user can see it
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return true;
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}
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}
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## Accessors
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/**
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* @return int
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*/
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public function getId() {
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return $this->id;
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}
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/**
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* @return string
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*/
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public function getTimestamp() {
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return $this->timestamp;
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}
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/**
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* @return string
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*/
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public function getType() {
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return $this->type;
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}
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/**
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|
* @return string|null
|
|
*/
|
|
public function getVariant() {
|
|
return $this->variant;
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function getExtra() {
|
|
return $this->extra;
|
|
}
|
|
|
|
/**
|
|
* @param string $key
|
|
* @param mixed|null $default
|
|
* @return mixed|null
|
|
*/
|
|
public function getExtraParam( $key, $default = null ) {
|
|
return $this->extra[$key] ?? $default;
|
|
}
|
|
|
|
/**
|
|
* @return User|null
|
|
*/
|
|
public function getAgent() {
|
|
return $this->agent;
|
|
}
|
|
|
|
/**
|
|
* Check whether this event allows its agent to be notified.
|
|
*
|
|
* Notifying the agent is only allowed if the event's type allows it, or if the event extra
|
|
* explicitly specifies 'notifyAgent' => true.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function canNotifyAgent() {
|
|
global $wgEchoNotifications;
|
|
$allowedInConfig = $wgEchoNotifications[$this->getType()]['canNotifyAgent'] ?? false;
|
|
$allowedInExtra = $this->getExtraParam( 'notifyAgent', false );
|
|
return $allowedInConfig || $allowedInExtra;
|
|
}
|
|
|
|
/**
|
|
* @param bool $fromPrimary
|
|
* @return null|Title
|
|
*/
|
|
public function getTitle( $fromPrimary = false ) {
|
|
if ( $this->title ) {
|
|
return $this->title;
|
|
}
|
|
if ( $this->pageId ) {
|
|
$titleCache = Services::getInstance()->getTitleLocalCache();
|
|
$title = $titleCache->get( $this->pageId );
|
|
if ( $title ) {
|
|
$this->title = $title;
|
|
return $this->title;
|
|
}
|
|
$this->title = Title::newFromID( $this->pageId, $fromPrimary ? IDBAccessObject::READ_LATEST : 0 );
|
|
if ( $this->title ) {
|
|
return $this->title;
|
|
}
|
|
}
|
|
if ( isset( $this->extra['page_title'] ) && isset( $this->extra['page_namespace'] ) ) {
|
|
$this->title = Title::makeTitleSafe(
|
|
$this->extra['page_namespace'],
|
|
$this->extra['page_title']
|
|
);
|
|
return $this->title;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @return int|null
|
|
*/
|
|
public function getPageId(): ?int {
|
|
return $this->pageId;
|
|
}
|
|
|
|
/**
|
|
* @return RevisionRecord|null
|
|
*/
|
|
public function getRevision() {
|
|
if ( $this->revision ) {
|
|
return $this->revision;
|
|
}
|
|
|
|
if ( isset( $this->extra['revid'] ) ) {
|
|
$revisionCache = Services::getInstance()->getRevisionLocalCache();
|
|
$revision = $revisionCache->get( $this->extra['revid'] );
|
|
if ( $revision ) {
|
|
$this->revision = $revision;
|
|
return $this->revision;
|
|
}
|
|
|
|
$store = MediaWikiServices::getInstance()->getRevisionStore();
|
|
$this->revision = $store->getRevisionById( $this->extra['revid'] );
|
|
return $this->revision;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get the category of the event type
|
|
* @return string
|
|
*/
|
|
public function getCategory() {
|
|
return Services::getInstance()->getAttributeManager()->getNotificationCategory( $this->type );
|
|
}
|
|
|
|
/**
|
|
* Get the section of the event type
|
|
* @return string
|
|
*/
|
|
public function getSection() {
|
|
return Services::getInstance()->getAttributeManager()->getNotificationSection( $this->type );
|
|
}
|
|
|
|
/**
|
|
* Determine whether an event can use the job queue, or should be immediate
|
|
* @return bool
|
|
*/
|
|
public function getUseJobQueue() {
|
|
global $wgEchoNotifications;
|
|
if ( isset( $wgEchoNotifications[$this->type]['immediate'] ) ) {
|
|
return !(bool)$wgEchoNotifications[$this->type]['immediate'];
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public function setType( $type ) {
|
|
$this->type = $type;
|
|
}
|
|
|
|
public function setVariant( $variant ) {
|
|
$this->variant = $variant;
|
|
}
|
|
|
|
public function setAgent( User $agent ) {
|
|
$this->agent = $agent;
|
|
}
|
|
|
|
public function setTitle( Title $title ) {
|
|
$this->title = $title;
|
|
$pageId = $title->getArticleID();
|
|
if ( $pageId ) {
|
|
$this->pageId = $pageId;
|
|
} else {
|
|
$this->extra['page_title'] = $title->getDBkey();
|
|
$this->extra['page_namespace'] = $title->getNamespace();
|
|
}
|
|
}
|
|
|
|
public function setExtra( $name, $value ) {
|
|
$this->extra[$name] = $value;
|
|
}
|
|
|
|
/**
|
|
* Get the message key of the primary or secondary link for a notification type.
|
|
*
|
|
* @param string $rank 'primary' or 'secondary'
|
|
* @return string i18n message key
|
|
*/
|
|
public function getLinkMessage( $rank ) {
|
|
global $wgEchoNotifications;
|
|
$type = $this->getType();
|
|
return $wgEchoNotifications[$type][$rank . '-link']['message'] ?? '';
|
|
}
|
|
|
|
/**
|
|
* Get the link destination of the primary or secondary link for a notification type.
|
|
*
|
|
* @param string $rank 'primary' or 'secondary'
|
|
* @return string The link destination, e.g. 'agent'
|
|
*/
|
|
public function getLinkDestination( $rank ) {
|
|
global $wgEchoNotifications;
|
|
$type = $this->getType();
|
|
return $wgEchoNotifications[$type][$rank . '-link']['destination'] ?? '';
|
|
}
|
|
|
|
/**
|
|
* @return string|null
|
|
*/
|
|
public function getBundleHash() {
|
|
return $this->bundleHash;
|
|
}
|
|
|
|
/**
|
|
* @param string|null $hash
|
|
*/
|
|
public function setBundleHash( $hash ) {
|
|
$this->bundleHash = $hash;
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isDeleted() {
|
|
return $this->deleted === 1;
|
|
}
|
|
|
|
public function setBundledEvents( array $events ) {
|
|
$this->bundledEvents = $events;
|
|
}
|
|
|
|
public function getBundledEvents() {
|
|
return $this->bundledEvents;
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function canBeBundled() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function getBundlingKey() {
|
|
return $this->getBundleHash();
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function setBundledElements( array $bundleables ) {
|
|
$this->setBundledEvents( $bundleables );
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function getSortingKey() {
|
|
return $this->getTimestamp();
|
|
}
|
|
|
|
/**
|
|
* Return the list of fields that should be selected to create
|
|
* a new event with Event::newFromRow
|
|
* @return string[]
|
|
*/
|
|
public static function selectFields() {
|
|
return [
|
|
'event_id',
|
|
'event_type',
|
|
'event_variant',
|
|
'event_agent_id',
|
|
'event_agent_ip',
|
|
'event_extra',
|
|
'event_page_id',
|
|
'event_deleted',
|
|
];
|
|
}
|
|
|
|
}
|
|
|
|
class_alias( Event::class, 'EchoEvent' );
|