* @ingroup SpecialPage
*/
use MediaWiki\Logger\LoggerFactory;
+use Wikimedia\Rdbms\DBQueryTimeoutError;
use Wikimedia\Rdbms\ResultWrapper;
use Wikimedia\Rdbms\FakeResultWrapper;
use Wikimedia\Rdbms\IDatabase;
$this->considerActionsForDefaultSavedQuery();
- $rows = $this->getRows();
$opts = $this->getOptions();
- if ( $rows === false ) {
- $rows = new FakeResultWrapper( [] );
- }
+ try {
+ $rows = $this->getRows();
+ if ( $rows === false ) {
+ $rows = new FakeResultWrapper( [] );
+ }
- // Used by Structured UI app to get results without MW chrome
- if ( $this->getRequest()->getVal( 'action' ) === 'render' ) {
- $this->getOutput()->setArticleBodyOnly( true );
- }
+ // Used by Structured UI app to get results without MW chrome
+ if ( $this->getRequest()->getVal( 'action' ) === 'render' ) {
+ $this->getOutput()->setArticleBodyOnly( true );
+ }
- // Used by "live update" and "view newest" to check
- // if there's new changes with minimal data transfer
- if ( $this->getRequest()->getBool( 'peek' ) ) {
+ // Used by "live update" and "view newest" to check
+ // if there's new changes with minimal data transfer
+ if ( $this->getRequest()->getBool( 'peek' ) ) {
$code = $rows->numRows() > 0 ? 200 : 204;
- $this->getOutput()->setStatusCode( $code );
- return;
- }
+ $this->getOutput()->setStatusCode( $code );
+ return;
+ }
- $batch = new LinkBatch;
- foreach ( $rows as $row ) {
- $batch->add( NS_USER, $row->rc_user_text );
- $batch->add( NS_USER_TALK, $row->rc_user_text );
- $batch->add( $row->rc_namespace, $row->rc_title );
- if ( $row->rc_source === RecentChange::SRC_LOG ) {
- $formatter = LogFormatter::newFromRow( $row );
- foreach ( $formatter->getPreloadTitles() as $title ) {
- $batch->addObj( $title );
+ $batch = new LinkBatch;
+ foreach ( $rows as $row ) {
+ $batch->add( NS_USER, $row->rc_user_text );
+ $batch->add( NS_USER_TALK, $row->rc_user_text );
+ $batch->add( $row->rc_namespace, $row->rc_title );
+ if ( $row->rc_source === RecentChange::SRC_LOG ) {
+ $formatter = LogFormatter::newFromRow( $row );
+ foreach ( $formatter->getPreloadTitles() as $title ) {
+ $batch->addObj( $title );
+ }
}
}
- }
- $batch->execute();
+ $batch->execute();
+
+ $this->setHeaders();
+ $this->outputHeader();
+ $this->addModules();
+ $this->webOutput( $rows, $opts );
- $this->setHeaders();
- $this->outputHeader();
- $this->addModules();
- $this->webOutput( $rows, $opts );
+ $rows->free();
+ } catch ( DBQueryTimeoutError $timeoutException ) {
+ MWExceptionHandler::logException( $timeoutException );
- $rows->free();
+ $this->setHeaders();
+ $this->outputHeader();
+ $this->addModules();
+
+ $this->getOutput()->setStatusCode( 500 );
+ $this->webOutputHeader( 0, $opts );
+ $this->outputTimeout();
+ }
if ( $this->getConfig()->get( 'EnableWANCacheReaper' ) ) {
// Clean up any bad page entries for titles showing up in RC
);
}
+ /**
+ * Add the "timeout" message to the output
+ */
+ protected function outputTimeout() {
+ $this->getOutput()->addHTML(
+ '<div class="mw-changeslist-timeout">' .
+ $this->msg( 'recentchanges-timeout' )->parse() .
+ '</div>'
+ );
+ }
+
/**
* Get the database result for this special page instance. Used by ApiFeedRecentChanges.
*
}
/**
- * Send output to the OutputPage object, only called if not used feeds
+ * Send header output to the OutputPage object, only called if not using feeds
*
- * @param ResultWrapper $rows Database rows
+ * @param int $rowCount Number of database rows
* @param FormOptions $opts
*/
- public function webOutput( $rows, $opts ) {
+ private function webOutputHeader( $rowCount, $opts ) {
if ( !$this->including() ) {
$this->outputFeedLinks();
- $this->doHeader( $opts, $rows->numRows() );
+ $this->doHeader( $opts, $rowCount );
}
+ }
+
+ /**
+ * Send output to the OutputPage object, only called if not used feeds
+ *
+ * @param ResultWrapper $rows Database rows
+ * @param FormOptions $opts
+ */
+ public function webOutput( $rows, $opts ) {
+ $this->webOutputHeader( $rows->numRows(), $opts );
$this->outputChangesList( $rows, $opts );
}