mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-11-30 18:45:07 +00:00
387 lines
10 KiB
PHP
387 lines
10 KiB
PHP
<?php
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use MediaWiki\MediaWikiServices;
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use Wikimedia\Rdbms\IResultWrapper;
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/**
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* Handle user email batch ( daily/ weekly )
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*/
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class MWEchoEmailBatch {
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/**
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* @var User the user to be notified
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*/
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protected $mUser;
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/**
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* @var Language
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*/
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protected $language;
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/**
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* @var EchoEvent[] events included in this email
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*/
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protected $events = [];
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/**
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* @var EchoEvent the last notification event of this batch
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*/
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protected $lastEvent;
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/**
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* @var int the event count, this count is supported up to self::$displaySize + 1
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*/
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protected $count = 0;
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/**
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* @var int number of bundle events to include in an email,
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* we cannot include all events in a batch email
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*/
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protected static $displaySize = 20;
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/**
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* @param User $user
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*/
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public function __construct( User $user ) {
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$this->mUser = $user;
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$this->language = Language::factory( $this->mUser->getOption( 'language' ) );
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}
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/**
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* Factory method to determine whether to create a batch instance for this
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* user based on the user setting, this assumes the following value for
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* member setting for echo-email-frequency
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* -1 - no email
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* 0 - instant
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* 1 - once everyday
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* 7 - once every 7 days
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* @param int $userId
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* @param bool $enforceFrequency Whether or not email sending frequency should
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* be enforced.
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*
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* When true, today's notifications won't be returned if they are
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* configured to go out tonight or at the end of the week.
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*
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* When false, all pending notifications will be returned.
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* @return MWEchoEmailBatch|false
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*/
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public static function newFromUserId( $userId, $enforceFrequency = true ) {
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$user = User::newFromId( (int)$userId );
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$userEmailSetting = (int)$user->getOption( 'echo-email-frequency' );
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// clear all existing events if user decides not to receive emails
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if ( $userEmailSetting == -1 ) {
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$emailBatch = new self( $user );
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$emailBatch->clearProcessedEvent();
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return false;
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}
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// @Todo - There may be some items idling in the queue, eg, a bundle job is lost
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// and there is not never another message with the same hash or a user switches from
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// digest to instant. We should check the first item in the queue, if it doesn't
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// have either web or email bundling or created long ago, then clear it, this will
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// prevent idling item queuing up.
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// user has instant email delivery
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if ( $userEmailSetting == 0 ) {
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return false;
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}
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$userLastBatch = $user->getOption( 'echo-email-last-batch' );
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// send email batch, if
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// 1. it has been long enough since last email batch based on frequency
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// 2. there is no last batch timestamp recorded for the user
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// 3. user has switched from batch to instant email, send events left in the queue
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if ( $userLastBatch ) {
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// use 20 as hours per day to get estimate
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$nextBatch = (int)wfTimestamp( TS_UNIX, $userLastBatch ) + $userEmailSetting * 20 * 60 * 60;
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if ( $enforceFrequency && wfTimestamp( TS_MW, $nextBatch ) > wfTimestampNow() ) {
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return false;
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}
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}
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return new self( $user );
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}
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/**
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* Wrapper function that calls other functions required to process email batch
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*/
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public function process() {
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// if there is no event for this user, exist the process
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if ( !$this->setLastEvent() ) {
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return;
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}
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// get valid events
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$events = $this->getEvents();
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if ( $events ) {
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foreach ( $events as $row ) {
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$this->count++;
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if ( $this->count > self::$displaySize ) {
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break;
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}
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$event = EchoEvent::newFromRow( $row );
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if ( !$event ) {
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continue;
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}
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$event->setBundleHash( $row->eeb_event_hash );
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$this->events[] = $event;
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}
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$bundler = new Bundler();
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$this->events = $bundler->bundle( $this->events );
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$this->sendEmail();
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}
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$this->clearProcessedEvent();
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$this->updateUserLastBatchTimestamp();
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}
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/**
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* Set the last event of this batch, this is a cutoff point for clearing
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* processed/invalid events
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*
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* @return bool true if event exists false otherwise
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*/
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protected function setLastEvent() {
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$dbr = MWEchoDbFactory::newFromDefault()->getEchoDb( DB_REPLICA );
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$res = $dbr->selectField(
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[ 'echo_email_batch' ],
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'MAX( eeb_event_id )',
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[ 'eeb_user_id' => $this->mUser->getId() ],
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__METHOD__
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);
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if ( $res ) {
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$this->lastEvent = $res;
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return true;
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}
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return false;
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}
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/**
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* Update the user's last batch timestamp after a successful batch
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*/
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protected function updateUserLastBatchTimestamp() {
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$this->mUser->setOption( 'echo-email-last-batch', wfTimestampNow() );
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$this->mUser->saveSettings();
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$this->mUser->invalidateCache();
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}
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/**
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* Get the events queued for the current user
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* @return \stdClass[]
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*/
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protected function getEvents() {
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global $wgEchoNotifications;
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$events = [];
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$validEvents = array_keys( $wgEchoNotifications );
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// Per the tech discussion in the design meeting (03/22/2013), since this is
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// processed by a cron job, it's okay to use GROUP BY over more complex
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// composite index, favor insert performance, storage space over read
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// performance in this case
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if ( $validEvents ) {
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$dbr = MWEchoDbFactory::newFromDefault()->getEchoDb( DB_REPLICA );
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$conds = [
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'eeb_user_id' => $this->mUser->getId(),
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'event_id = eeb_event_id',
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'event_type' => $validEvents
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];
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$tables = [ 'echo_email_batch', 'echo_event' ];
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if ( $this->mUser->getOption( 'echo-dont-email-read-notifications' ) ) {
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$conds = array_merge(
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$conds,
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[
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'notification_event = event_id',
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'notification_read_timestamp IS NULL',
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]
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);
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$tables[] = 'echo_notification';
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}
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// See setLastEvent() for more detail for this variable
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if ( $this->lastEvent ) {
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$conds[] = 'eeb_event_id <= ' . (int)$this->lastEvent;
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}
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$fields = array_merge( EchoEvent::selectFields(), [
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'eeb_id',
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'eeb_user_id',
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'eeb_event_priority',
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'eeb_event_id',
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'eeb_event_hash',
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] );
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$res = $dbr->select(
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$tables,
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$fields,
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$conds,
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__METHOD__,
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[
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'ORDER BY' => 'eeb_event_priority',
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'LIMIT' => self::$displaySize + 1,
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]
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);
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foreach ( $res as $row ) {
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// records in the queue inserted before email bundling code
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// have no hash, in this case, we just ignore them
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if ( $row->eeb_event_hash ) {
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$events[$row->eeb_id] = $row;
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}
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}
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}
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return $events;
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}
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/**
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* Clear "processed" events in the queue,
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* processed could be: email sent, invalid, users do not want to receive emails
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*/
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public function clearProcessedEvent() {
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global $wgUpdateRowsPerQuery;
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$eventMapper = new EchoEventMapper();
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$dbFactory = MWEchoDbFactory::newFromDefault();
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$dbw = $dbFactory->getEchoDb( DB_MASTER );
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$dbr = $dbFactory->getEchoDb( DB_REPLICA );
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$lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
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$ticket = $lbFactory->getEmptyTransactionTicket( __METHOD__ );
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$domainId = $dbw->getDomainID();
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$iterator = new BatchRowIterator( $dbr, 'echo_email_batch', 'eeb_event_id', $wgUpdateRowsPerQuery );
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$iterator->addConditions( [ 'eeb_user_id' => $this->mUser->getId() ] );
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if ( $this->lastEvent ) {
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// There is a processed cutoff point
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$iterator->addConditions( [ 'eeb_event_id <= ' . (int)$this->lastEvent ] );
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}
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$iterator->setCaller( __METHOD__ );
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foreach ( $iterator as $batch ) {
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$eventIds = [];
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foreach ( $batch as $row ) {
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$eventIds[] = $row->eeb_event_id;
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}
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$dbw->delete( 'echo_email_batch', [
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'eeb_user_id' => $this->mUser->getId(),
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'eeb_event_id' => $eventIds
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], __METHOD__ );
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// Find out which events are now orphaned, i.e. no longer referenced in echo_email_batch
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// (besides the rows we just deleted) or in echo_notification, and delete them
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$eventMapper->deleteOrphanedEvents( $eventIds, $this->mUser->getId(), 'echo_email_batch' );
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$lbFactory->commitAndWaitForReplication(
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__METHOD__, $ticket, [ 'domain' => $domainId ] );
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}
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}
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/**
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* Send the batch email
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*/
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public function sendEmail() {
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global $wgPasswordSender, $wgNoReplyAddress;
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if ( $this->mUser->getOption( 'echo-email-frequency' ) == EchoEmailFrequency::WEEKLY_DIGEST ) {
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$frequency = 'weekly';
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$emailDeliveryMode = 'weekly_digest';
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} else {
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$frequency = 'daily';
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$emailDeliveryMode = 'daily_digest';
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}
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$textEmailDigestFormatter = new EchoPlainTextDigestEmailFormatter( $this->mUser, $this->language, $frequency );
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$content = $textEmailDigestFormatter->format( $this->events, 'email' );
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if ( !$content ) {
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// no event could be formatted
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return;
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}
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$format = MWEchoNotifUser::newFromUser( $this->mUser )->getEmailFormat();
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if ( $format == EchoEmailFormat::HTML ) {
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$htmlEmailDigestFormatter = new EchoHtmlDigestEmailFormatter( $this->mUser, $this->language, $frequency );
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$htmlContent = $htmlEmailDigestFormatter->format( $this->events, 'email' );
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$content = [
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'body' => [
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'text' => $content['body'],
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'html' => $htmlContent['body'],
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],
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'subject' => $htmlContent['subject'],
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];
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}
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$toAddress = MailAddress::newFromUser( $this->mUser );
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$fromAddress = new MailAddress( $wgPasswordSender, wfMessage( 'emailsender' )->inContentLanguage()->text() );
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$replyTo = new MailAddress( $wgNoReplyAddress );
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// @Todo Push the email to job queue or just send it out directly?
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UserMailer::send( $toAddress, $fromAddress, $content['subject'], $content['body'], [ 'replyTo' => $replyTo ] );
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MWEchoEventLogging::logSchemaEchoMail( $this->mUser, $emailDeliveryMode );
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}
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/**
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* Insert notification event into email queue
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*
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* @param int $userId
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* @param int $eventId
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* @param int $priority
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* @param string $hash
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*/
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public static function addToQueue( $userId, $eventId, $priority, $hash ) {
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if ( !$userId || !$eventId ) {
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return;
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}
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$dbw = MWEchoDbFactory::newFromDefault()->getEchoDb( DB_MASTER );
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$row = [
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'eeb_user_id' => $userId,
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'eeb_event_id' => $eventId,
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'eeb_event_priority' => $priority,
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'eeb_event_hash' => $hash
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];
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$dbw->insert(
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'echo_email_batch',
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$row,
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__METHOD__,
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[ 'IGNORE' ]
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);
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}
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/**
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* Get a list of users to be notified for the batch
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*
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* @param int $startUserId
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* @param int $batchSize
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*
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* @return IResultWrapper|bool
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*/
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public static function getUsersToNotify( $startUserId, $batchSize ) {
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$dbr = MWEchoDbFactory::newFromDefault()->getEchoDb( DB_REPLICA );
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$res = $dbr->select(
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[ 'echo_email_batch' ],
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[ 'eeb_user_id' ],
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[ 'eeb_user_id > ' . (int)$startUserId ],
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__METHOD__,
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[ 'ORDER BY' => 'eeb_user_id', 'LIMIT' => $batchSize ]
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);
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return $res;
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}
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}
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