Merge "Port categories dump header fix"

[lhc/web/wiklou.git] / includes / libs / rdbms / lbfactory / LBFactoryMulti.php

diff --git a/includes/libs/rdbms/lbfactory/LBFactoryMulti.php b/includes/libs/rdbms/lbfactory/LBFactoryMulti.php
index 0384588..cfa2647 100644 (file)
--- a/includes/libs/rdbms/lbfactory/LBFactoryMulti.php
+++ b/includes/libs/rdbms/lbfactory/LBFactoryMulti.php
@@ -107,6 +107,12 @@ class LBFactoryMulti extends LBFactory {
        /** @var string */
        private $lastSection;
 
+       /** @var int */
+       private $maxLag = self::MAX_LAG_DEFAULT;
+
+       /** @var int Default 'maxLag' when unspecified */
+       const MAX_LAG_DEFAULT = 10;
+
        /**
         * @see LBFactory::__construct()
         *
@@ -160,6 +166,7 @@ class LBFactoryMulti extends LBFactory {
         *                                 storage cluster.
         *   - masterTemplateOverrides     Server configuration map overrides for all master servers.
         *   - loadMonitorClass            Name of the LoadMonitor class to always use.
+        *   - maxLag                      Avoid replica DBs with more lag than this many seconds.
         *   - readOnlyBySection           A map of section name to read-only message.
         *                                 Missing or false for read/write.
         */
@@ -171,7 +178,7 @@ class LBFactoryMulti extends LBFactory {
                $optional = [ 'groupLoadsBySection', 'groupLoadsByDB', 'hostsByName',
                        'externalLoads', 'externalTemplateOverrides', 'templateOverridesByServer',
                        'templateOverridesByCluster', 'templateOverridesBySection', 'masterTemplateOverrides',
-                       'readOnlyBySection', 'loadMonitorClass' ];
+                       'readOnlyBySection', 'maxLag', 'loadMonitorClass' ];
 
                foreach ( $required as $key ) {
                        if ( !isset( $conf[$key] ) ) {
@@ -319,6 +326,7 @@ class LBFactoryMulti extends LBFactory {
                        $this->baseLoadBalancerParams(),
                        [
                                'servers' => $this->makeServerArray( $template, $loads, $groupLoads ),
+                               'maxLag' => $this->maxLag,
                                'loadMonitor' => [ 'class' => $this->loadMonitorClass ],
                                'readOnlyReason' => $readOnlyReason
                        ]