Make LocalFile check early if the revision store is available

[lhc/web/wiklou.git] / includes / externalstore / ExternalStore.php

diff --git a/includes/externalstore/ExternalStore.php b/includes/externalstore/ExternalStore.php
index 2ac6f7e..de7d1a4 100644 (file)
--- a/includes/externalstore/ExternalStore.php
+++ b/includes/externalstore/ExternalStore.php
@@ -158,7 +158,7 @@ class ExternalStore {
         * provided by $wgDefaultExternalStore.
         *
         * @param string $data
-        * @param array $params Associative array of ExternalStoreMedium parameters
+        * @param array $params Map of ExternalStoreMedium::__construct context parameters
         * @return string|bool The URL of the stored data item, or false on error
         * @throws MWException
         */
@@ -176,7 +176,7 @@ class ExternalStore {
         *
         * @param array $tryStores Refer to $wgDefaultExternalStore
         * @param string $data
-        * @param array $params Associative array of ExternalStoreMedium parameters
+        * @param array $params Map of ExternalStoreMedium::__construct context parameters
         * @return string|bool The URL of the stored data item, or false on error
         * @throws MWException
         */
@@ -219,6 +219,29 @@ class ExternalStore {
                }
        }
 
+       /**
+        * @return bool Whether all the default insertion stores are marked as read-only
+        * @since 1.31
+        */
+       public static function defaultStoresAreReadOnly() {
+               global $wgDefaultExternalStore;
+
+               $tryStores = (array)$wgDefaultExternalStore;
+               if ( !$tryStores ) {
+                       return false; // no stores exists which can be "read only"
+               }
+
+               foreach ( $tryStores as $storeUrl ) {
+                       list( $proto, $path ) = explode( '://', $storeUrl, 2 );
+                       $store = self::getStoreObject( $proto, [] );
+                       if ( !$store->isReadOnly( $path ) ) {
+                               return false; // at least one store is not read-only
+                       }
+               }
+
+               return true; // all stores are read-only
+       }
+
        /**
         * @param string $data
         * @param string $wiki