Prevent write operations to database replicas.

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

diff --git a/includes/Setup.php b/includes/Setup.php
index e4396ba..d6f4b2f 100644 (file)
--- a/includes/Setup.php
+++ b/includes/Setup.php
@@ -37,8 +37,11 @@ if ( !defined( 'MEDIAWIKI' ) ) {
  * Pre-config setup: Before loading LocalSettings.php
  */
 
-// Grab profiling functions
-require_once "$IP/includes/profiler/ProfilerFunctions.php";
+// Get profiler configuraton
+$wgProfiler = [];
+if ( file_exists( "$IP/StartProfiler.php" ) ) {
+       require "$IP/StartProfiler.php";
+}
 
 // Start the autoloader, so that extensions can derive classes from core files
 require_once "$IP/includes/AutoLoader.php";
@@ -46,12 +49,6 @@ require_once "$IP/includes/AutoLoader.php";
 // Load up some global defines
 require_once "$IP/includes/Defines.php";
 
-// Start the profiler
-$wgProfiler = [];
-if ( file_exists( "$IP/StartProfiler.php" ) ) {
-       require "$IP/StartProfiler.php";
-}
-
 // Load default settings
 require_once "$IP/includes/DefaultSettings.php";
 
@@ -737,14 +734,22 @@ if ( !$wgDBerrorLogTZ ) {
        $wgDBerrorLogTZ = $wgLocaltimezone;
 }
 
-// initialize the request object in $wgRequest
+// Initialize the request object in $wgRequest
 $wgRequest = RequestContext::getMain()->getRequest(); // BackCompat
-// Set user IP/agent information for causal consistency purposes
+// Set user IP/agent information for causal consistency purposes.
+// The cpPosTime cookie has no prefix and is set by MediaWiki::preOutputCommit().
+$cpPosTime = $wgRequest->getFloat( 'cpPosTime', $wgRequest->getCookie( 'cpPosTime', '' ) );
 MediaWikiServices::getInstance()->getDBLoadBalancerFactory()->setRequestInfo( [
        'IPAddress' => $wgRequest->getIP(),
        'UserAgent' => $wgRequest->getHeader( 'User-Agent' ),
-       'ChronologyProtection' => $wgRequest->getHeader( 'ChronologyProtection' )
+       'ChronologyProtection' => $wgRequest->getHeader( 'ChronologyProtection' ),
+       'ChronologyPositionTime' => $cpPosTime
 ] );
+// Make sure that caching does not compromise the consistency improvements
+if ( $cpPosTime ) {
+       MediaWikiServices::getInstance()->getMainWANObjectCache()->useInterimHoldOffCaching( false );
+}
+unset( $cpPosTime );
 
 // Useful debug output
 if ( $wgCommandLineMode ) {