| Current File : /home/jvzmxxx/wiki1/extensions/Echo/includes/model/Event.php |
<?php
/**
* Immutable class to represent an event.
* In Echo nomenclature, an event is a single occurrence.
*/
class EchoEvent extends EchoAbstractEntity implements Bundleable {
protected $type = null;
protected $id = null;
protected $variant = null;
/**
* @var User
*/
protected $agent = null;
/**
* Loaded dynamically on request
*
* @var Title
*/
protected $title = null;
protected $pageId = null;
/**
* Loaded dynamically on request
*
* @var Revision
*/
protected $revision = null;
protected $extra = array();
/**
* Notification timestamp
* @var string
*/
protected $timestamp = null;
/**
* A hash used to bundle a set of events, events that can be
* grouped for a user has the same bundle hash
* @var string
*/
protected $bundleHash;
/**
* Other events bundled with this one
*
* @var EchoEvent[]
*/
protected $bundledEvents;
/**
* Deletion flag
*
* @var int
*/
protected $deleted = 0;
/**
* You should not call the constructor.
* Instead use one of the factory functions:
* EchoEvent::create To create a new event
* EchoEvent::newFromRow To create an event object from a row object
* EchoEvent::newFromID To create an event object from the database given its ID
*/
protected function __construct() {
}
## Save the id and timestamp
function __sleep() {
if ( !$this->id ) {
throw new MWException( "Unable to serialize an uninitialized EchoEvent" );
}
return array( 'id', 'timestamp' );
}
function __wakeup() {
$this->loadFromID( $this->id );
}
function __toString() {
return "EchoEvent(id={$this->id}; type={$this->type})";
}
/**
* Creates an EchoEvent object
* @param $info array Named arguments:
* type (required): The event type;
* variant: A variant of the type;
* agent: The user who caused the event;
* title: The page on which the event was triggered;
* extra: Event-specific extra information (e.g. post content)
*
* @throws MWException
* @return EchoEvent|bool false if aborted via hook or Echo DB is read-only
*/
public static function create( $info = array() ) {
global $wgEchoNotifications;
// Do not create event and notifications if write access is locked
if ( wfReadOnly()
|| MWEchoDbFactory::newFromDefault()->getEchoDb( DB_MASTER )->isReadOnly()
) {
return false;
}
$obj = new EchoEvent;
static $validFields = array( 'type', 'variant', 'agent', 'title', 'extra' );
if ( empty( $info['type'] ) ) {
throw new MWException( "'type' parameter is mandatory" );
}
if ( !isset( $wgEchoNotifications[$info['type']] ) ) {
return false;
}
$obj->id = false;
if ( isset( $info['timestamp'] ) ) {
$obj->timestamp = $info['timestamp'];
} else {
$obj->timestamp = wfTimestampNow();
}
foreach ( $validFields as $field ) {
if ( isset( $info[$field] ) ) {
$obj->$field = $info[$field];
}
}
// If the extra size is more than 50000 bytes, that means there is
// probably a problem with the design of this notification type.
// There might be data loss if the size exceeds the DB column size of
// event_extra.
if ( strlen( $obj->serializeExtra() ) > 50000 ) {
wfDebugLog( __CLASS__, __FUNCTION__ . ': event extra data is too huge for ' . $info['type'] );
return false;
}
if ( $obj->title ) {
if ( !$obj->title instanceof Title ) {
throw new MWException( 'Invalid title parameter' );
}
$obj->setTitle( $obj->title );
}
if ( $obj->agent && !
( $obj->agent instanceof User ||
$obj->agent instanceof StubObject )
) {
throw new MWException( "Invalid user parameter" );
}
if ( !Hooks::run( 'BeforeEchoEventInsert', array( $obj ) ) ) {
return false;
}
// @Todo - Database insert logic should not be inside the model
$obj->insert();
Hooks::run( 'EchoEventInsertComplete', array( $obj ) );
global $wgEchoUseJobQueue;
EchoNotificationController::notify( $obj, $wgEchoUseJobQueue );
return $obj;
}
/**
* Convert the object's database property to array
* @return array
*/
public function toDbArray() {
$data = array(
'event_type' => $this->type,
'event_variant' => $this->variant,
'event_deleted' => $this->deleted,
'event_extra' => $this->serializeExtra()
);
if ( $this->id ) {
$data['event_id'] = $this->id;
}
if ( $this->agent ) {
if ( $this->agent->isAnon() ) {
$data['event_agent_ip'] = $this->agent->getName();
} else {
$data['event_agent_id'] = $this->agent->getId();
}
}
if ( $this->pageId ) {
$data['event_page_id'] = $this->pageId;
} elseif ( $this->title ) {
$pageId = $this->title->getArticleId();
// Don't need any special handling for title with no id
// as they are already stored in extra data array
if ( $pageId ) {
$data['event_page_id'] = $pageId;
}
}
return $data;
}
/**
* Check whether the echo event is an enabled event
* @return bool
*/
public function isEnabledEvent() {
global $wgEchoNotifications;
if ( isset( $wgEchoNotifications[$this->getType()] ) ) {
return true;
} else {
return false;
}
}
/**
* Inserts the object into the database.
*/
protected function insert() {
$eventMapper = new EchoEventMapper();
$this->id = $eventMapper->insert( $this );
$targetPages = self::resolveTargetPages( $this->getExtraParam( 'target-page' ) );
if ( $targetPages ) {
$targetMapper = new EchoTargetPageMapper();
foreach ( $targetPages as $title ) {
$targetPage = EchoTargetPage::create( $title, $this );
if ( $targetPage ) {
$targetMapper->insert( $targetPage );
}
}
}
}
/**
* @param int[]|int|false $targetPageIds
* @return Title[]
*/
protected static function resolveTargetPages( $targetPageIds ) {
if ( !$targetPageIds ) {
return array();
}
if ( !is_array( $targetPageIds ) ) {
$targetPageIds = array( $targetPageIds );
}
$result = array();
foreach ( $targetPageIds as $targetPageId ) {
// Make sure the target-page id is a valid id
$title = Title::newFromID( $targetPageId );
// Try master if there is no match
if ( !$title ) {
$title = Title::newFromID( $targetPageId, Title::GAID_FOR_UPDATE );
}
if ( $title ) {
$result[] = $title;
}
}
return $result;
}
/**
* Loads data from the provided $row into this object.
*
* @param $row stdClass row object from echo_event
* @return bool Whether loading was successful
*/
public function loadFromRow( $row ) {
$this->id = $row->event_id;
$this->type = $row->event_type;
// If the object is loaded from __sleep(), timestamp should be already set
if ( !$this->timestamp ) {
if ( isset( $row->notification_timestamp ) ) {
$this->timestamp = wfTimestamp( TS_MW, $row->notification_timestamp );
} else {
$this->timestamp = wfTimestampNow();
}
}
$this->variant = $row->event_variant;
try {
$this->extra = $row->event_extra ? unserialize( $row->event_extra ) : array();
} catch ( Exception $e ) {
// T73489: unserializing can fail for old notifications
MWExceptionHandler::logException( $e );
return false;
}
$this->pageId = $row->event_page_id;
$this->deleted = $row->event_deleted;
if ( $row->event_agent_id ) {
$this->agent = User::newFromID( $row->event_agent_id );
} elseif ( $row->event_agent_ip ) {
$this->agent = User::newFromName( $row->event_agent_ip, false );
}
// Lazy load the title from getTitle() so that we can do a batch-load
if (
isset( $this->extra['page_title'], $this->extra['page_namespace'] )
&& !$row->event_page_id
) {
$this->title = Title::makeTitleSafe(
$this->extra['page_namespace'],
$this->extra['page_title']
);
}
if ( $row->event_page_id ) {
$titleCache = EchoTitleLocalCache::create();
$titleCache->add( $row->event_page_id );
}
if ( isset( $this->extra['revid'] ) && $this->extra['revid'] ) {
$revisionCache = EchoRevisionLocalCache::create();
$revisionCache->add( $this->extra['revid'] );
}
return true;
}
/**
* Loads data from the database into this object, given the event ID.
* @param $id int Event ID
* @param $fromMaster bool
* @return bool Whether it loaded successfully
*/
public function loadFromID( $id, $fromMaster = false ) {
$eventMapper = new EchoEventMapper();
$event = $eventMapper->fetchById( $id, $fromMaster );
if ( !$event ) {
return false;
}
// Copy over the attribute
$this->id = $event->id;
$this->type = $event->type;
$this->variant = $event->variant;
$this->extra = $event->extra;
$this->pageId = $event->pageId;
$this->agent = $event->agent;
$this->title = $event->title;
$this->deleted = $event->deleted;
// Don't overwrite timestamp if it exists already
if ( !$this->timestamp ) {
$this->timestamp = $event->timestamp;
}
return true;
}
/**
* Creates an EchoEvent from a row object
*
* @param $row stdClass row object from echo_event
* @return EchoEvent|bool
*/
public static function newFromRow( $row ) {
$obj = new EchoEvent();
return $obj->loadFromRow( $row )
? $obj
: false;
}
/**
* Creates an EchoEvent from the database by ID
*
* @param $id int Event ID
* @return EchoEvent|bool
*/
public static function newFromID( $id ) {
$obj = new EchoEvent();
return $obj->loadFromID( $id )
? $obj
: false;
}
/**
* Serialize the extra data for event
* @return string
*/
public function serializeExtra() {
if ( is_array( $this->extra ) || is_object( $this->extra ) ) {
$extra = serialize( $this->extra );
} elseif ( is_null( $this->extra ) ) {
$extra = null;
} else {
$extra = serialize( array( $this->extra ) );
}
return $extra;
}
/**
* Check if the event is dismissable for the given distribution type
*
* @param string $distribution notification distribution web/email
* @return bool
*/
public function isDismissable( $distribution ) {
global $wgEchoNotificationCategories;
$category = $this->getCategory();
if ( isset( $wgEchoNotificationCategories[$category]['no-dismiss'] ) ) {
$noDismiss = $wgEchoNotificationCategories[$category]['no-dismiss'];
} else {
$noDismiss = array();
}
if ( !in_array( $distribution, $noDismiss ) && !in_array( 'all', $noDismiss ) ) {
return true;
} else {
return false;
}
}
/**
* Determine if the current user is allowed to view a particular
* field of this revision, if it's marked as deleted. When no
* revision is attached always returns true.
*
* @param $field Integer:one of Revision::DELETED_TEXT,
* Revision::DELETED_COMMENT,
* Revision::DELETED_USER
* @param $user User object to check
* @return Boolean
*/
public function userCan( $field, User $user ) {
$revision = $this->getRevision();
// User is handled specially
if ( $field === Revision::DELETED_USER ) {
$agent = $this->getAgent();
if ( !$agent ) {
// No user associated, so they can see it.
return true;
} elseif ( $revision
&& $agent->getName() === $revision->getUserText( Revision::RAW )
) {
// If the agent and the revision user are the same, use rev_deleted
return $revision->userCan( $field, $user );
} else {
// Use User::isHidden()
return $user->isAllowedAny( 'viewsuppressed', 'hideuser' ) || !$agent->isHidden();
}
} elseif ( $revision ) {
// A revision is set, use rev_deleted
return $revision->userCan( $field, $user );
} else {
// Not a user, and there is no associated revision, so the user can see it
return true;
}
}
## Accessors
/**
* @return int
*/
public function getId() {
return $this->id;
}
/**
* @return string
*/
public function getTimestamp() {
return $this->timestamp;
}
/**
* @return string
*/
public function getType() {
return $this->type;
}
/**
* @return string|null
*/
public function getVariant() {
return $this->variant;
}
/**
* @return array|null
*/
public function getExtra() {
return $this->extra;
}
public function getExtraParam( $key, $default = null ) {
return isset( $this->extra[$key] ) ? $this->extra[$key] : $default;
}
/**
* @return User|null
*/
public function getAgent() {
return $this->agent;
}
/**
* @param bool $fromMaster
* @return null|Title
*/
public function getTitle( $fromMaster = false ) {
if ( $this->title ) {
return $this->title;
} elseif ( $this->pageId ) {
$titleCache = EchoTitleLocalCache::create();
$title = $titleCache->get( $this->pageId );
if ( $title ) {
return $this->title = $title;
}
return $this->title = Title::newFromID( $this->pageId, $fromMaster ? Title::GAID_FOR_UPDATE : 0 );
} elseif ( isset( $this->extra['page_title'], $this->extra['page_namespace'] ) ) {
return $this->title = Title::makeTitleSafe(
$this->extra['page_namespace'],
$this->extra['page_title']
);
}
return null;
}
/**
* @return Revision|null
*/
public function getRevision() {
if ( $this->revision ) {
return $this->revision;
} elseif ( isset( $this->extra['revid'] ) ) {
$revisionCache = EchoRevisionLocalCache::create();
$revision = $revisionCache->get( $this->extra['revid'] );
if ( $revision ) {
return $this->revision = $revision;
}
return $this->revision = Revision::newFromId( $this->extra['revid'] );
}
return null;
}
/**
* Get the category of the event type
* @return string
*/
public function getCategory() {
$attributeManager = EchoAttributeManager::newFromGlobalVars();
return $attributeManager->getNotificationCategory( $this->type );
}
/**
* Get the section of the event type
* @return string
*/
public function getSection() {
$attributeManager = EchoAttributeManager::newFromGlobalVars();
return $attributeManager->getNotificationSection( $this->type );
}
/**
* Determine whether an event can use the job queue, or should be immediate
* @return boolean
*/
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 $rank String 'primary' or 'secondary'
* @return String i18n message key
*/
public function getLinkMessage( $rank ) {
global $wgEchoNotifications;
$type = $this->getType();
if ( isset( $wgEchoNotifications[$type][$rank . '-link']['message'] ) ) {
return $wgEchoNotifications[$type][$rank . '-link']['message'];
}
return '';
}
/**
* Get the link destination of the primary or secondary link for a notification type.
*
* @param $rank String 'primary' or 'secondary'
* @return String The link destination, e.g. 'agent'
*/
public function getLinkDestination( $rank ) {
global $wgEchoNotifications;
$type = $this->getType();
if ( isset( $wgEchoNotifications[$type][$rank . '-link']['destination'] ) ) {
return $wgEchoNotifications[$type][$rank . '-link']['destination'];
}
return '';
}
/**
* @return string
*/
public function getBundleHash() {
return $this->bundleHash;
}
/**
* @param $hash string
*/
public function setBundleHash( $hash ) {
$this->bundleHash = $hash;
}
/**
* @return bool
*/
public function isDeleted() {
return $this->deleted === 1;
}
public function setBundledEvents( $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( $bundleables ) {
$this->setBundledEvents( $bundleables );
}
/**
* @inheritdoc
*/
public function getSortingKey() {
return $this->getTimestamp();
}
}