Merge "Move up devunt's name to Developers"

[lhc/web/wiklou.git] / includes / MediaWiki.php

diff --git a/includes/MediaWiki.php b/includes/MediaWiki.php
index 9bbbd35..218337a 100644 (file)
--- a/includes/MediaWiki.php
+++ b/includes/MediaWiki.php
@@ -517,6 +517,7 @@ class MediaWiki {
         */
        public function run() {
                try {
+                       $this->setDBProfilingAgent();
                        try {
                                $this->main();
                        } catch ( ErrorPageError $e ) {
@@ -527,12 +528,40 @@ class MediaWiki {
                                $e->report(); // display the GUI error
                        }
                } catch ( Exception $e ) {
+                       $context = $this->context;
+                       $action = $context->getRequest()->getVal( 'action', 'view' );
+                       if (
+                               $e instanceof DBConnectionError &&
+                               $context->hasTitle() &&
+                               $context->getTitle()->canExist() &&
+                               in_array( $action, [ 'view', 'history' ], true ) &&
+                               HTMLFileCache::useFileCache( $this->context, HTMLFileCache::MODE_OUTAGE )
+                       ) {
+                               // Try to use any (even stale) file during outages...
+                               $cache = new HTMLFileCache( $context->getTitle(), 'view' );
+                               if ( $cache->isCached() ) {
+                                       $cache->loadFromFileCache( $context, HTMLFileCache::MODE_OUTAGE );
+                                       print MWExceptionRenderer::getHTML( $e );
+                                       exit;
+                               }
+
+                       }
+
                        MWExceptionHandler::handleException( $e );
                }
 
                $this->doPostOutputShutdown( 'normal' );
        }
 
+       private function setDBProfilingAgent() {
+               $services = MediaWikiServices::getInstance();
+               // Add a comment for easy SHOW PROCESSLIST interpretation
+               $name = $this->context->getUser()->getName();
+               $services->getDBLoadBalancerFactory()->setAgentName(
+                       mb_strlen( $name ) > 15 ? mb_substr( $name, 0, 15 ) . '...' : $name
+               );
+       }
+
        /**
         * @see MediaWiki::preOutputCommit()
         * @param callable $postCommitWork [default: null]
@@ -809,24 +838,22 @@ class MediaWiki {
                        }
                }
 
-               if ( $this->config->get( 'UseFileCache' ) && $title->getNamespace() >= 0 ) {
-                       if ( HTMLFileCache::useFileCache( $this->context ) ) {
-                               // Try low-level file cache hit
-                               $cache = new HTMLFileCache( $title, $action );
-                               if ( $cache->isCacheGood( /* Assume up to date */ ) ) {
-                                       // Check incoming headers to see if client has this cached
-                                       $timestamp = $cache->cacheTimestamp();
-                                       if ( !$output->checkLastModified( $timestamp ) ) {
-                                               $cache->loadFromFileCache( $this->context );
-                                       }
-                                       // Do any stats increment/watchlist stuff
-                                       // Assume we're viewing the latest revision (this should always be the case with file cache)
-                                       $this->context->getWikiPage()->doViewUpdates( $this->context->getUser() );
-                                       // Tell OutputPage that output is taken care of
-                                       $output->disable();
-
-                                       return;
+               if ( $title->canExist() && HTMLFileCache::useFileCache( $this->context ) ) {
+                       // Try low-level file cache hit
+                       $cache = new HTMLFileCache( $title, $action );
+                       if ( $cache->isCacheGood( /* Assume up to date */ ) ) {
+                               // Check incoming headers to see if client has this cached
+                               $timestamp = $cache->cacheTimestamp();
+                               if ( !$output->checkLastModified( $timestamp ) ) {
+                                       $cache->loadFromFileCache( $this->context );
                                }
+                               // Do any stats increment/watchlist stuff, assuming user is viewing the
+                               // latest revision (which should always be the case for file cache)
+                               $this->context->getWikiPage()->doViewUpdates( $this->context->getUser() );
+                               // Tell OutputPage that output is taken care of
+                               $output->disable();
+
+                               return;
                        }
                }
 
@@ -872,6 +899,7 @@ class MediaWiki {
 
                // Do any deferred jobs
                DeferredUpdates::doUpdates( 'enqueue' );
+               DeferredUpdates::setImmediateMode( true );
 
                // Make sure any lazy jobs are pushed
                JobQueueGroup::pushLazyJobs();