OutputPage: Log violations of module 'target' filter

Bug: T140675
Change-Id: Icf9a2e72b663e363e8c87d5d464892c2bbbe78b2

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index af82436..eb2f7e7 100644 (file)
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -534,14 +534,32 @@ class OutputPage extends ContextSource {
                        if ( $module instanceof ResourceLoaderModule
                                && $module->getOrigin() <= $this->getAllowedModules( $type )
                                && ( is_null( $position ) || $module->getPosition() == $position )
-                               && ( !$this->mTarget || in_array( $this->mTarget, $module->getTargets() ) )
                        ) {
+                               if ( $this->mTarget && !in_array( $this->mTarget, $module->getTargets() ) ) {
+                                       $this->warnModuleTargetFilter( $module->getName() );
+                                       continue;
+                               }
                                $filteredModules[] = $val;
                        }
                }
                return $filteredModules;
        }
 
+       private function warnModuleTargetFilter( $moduleName ) {
+               static $warnings = [];
+               if ( isset( $warnings[$this->mTarget][$moduleName] ) ) {
+                       return;
+               }
+               $warnings[$this->mTarget][$moduleName] = true;
+               $this->getResourceLoader()->getLogger()->debug(
+                       'Module "{module}" not loadable on target "{target}".',
+                       [
+                               'module' => $moduleName,
+                               'target' => $this->mTarget,
+                       ]
+               );
+       }
+
        /**
         * Get the list of modules to include on this page
         *