MDL-36363 Override instance_deleted() for all cache stores performing just a cleanup() when this action successfully applies over all the definitions of the cache store

cache/stores/memcache/lib.php

@@ -323,6 +323,17 @@ class cachestore_memcache extends cache_store implements cache_is_configurable {
         $this->purge();
     }
 
+    /**
+     * Performs any necessary operation when the store instance is being deleted,
+     * regardless the store being initialised with a definition ({@link initialise()}).
+     *
+     * @link http://tracker.moodle.org/browse/MDL-36363
+     * @see cleanup()
+     */
+    public function instance_deleted() {
+        $this->cleanup();
+    }
+
     /**
      * Generates an instance of the cache store that can be used for testing.
      *

cache/stores/memcached/lib.php

@@ -405,6 +405,17 @@ class cachestore_memcached extends cache_store implements cache_is_configurable
         $this->purge();
     }
 
+    /**
+     * Performs any necessary operation when the store instance is being deleted,
+     * regardless the store being initialised with a definition ({@link initialise()}).
+     *
+     * @link http://tracker.moodle.org/browse/MDL-36363
+     * @see cleanup()
+     */
+    public function instance_deleted() {
+        $this->cleanup();
+    }
+
     /**
      * Generates an instance of the cache store that can be used for testing.
      *

cache/stores/mongodb/lib.php

@@ -443,6 +443,17 @@ class cachestore_mongodb extends cache_store implements cache_is_configurable {
         $this->purge();
     }
 
+    /**
+     * Performs any necessary operation when the store instance is being deleted,
+     * regardless the store being initialised with a definition ({@link initialise()}).
+     *
+     * @link http://tracker.moodle.org/browse/MDL-36363
+     * @see cleanup()
+     */
+    public function instance_deleted() {
+        $this->cleanup();
+    }
+
     /**
      * Generates an instance of the cache store that can be used for testing.
      *

cache/stores/session/lib.php

@@ -379,6 +379,17 @@ class cachestore_session extends session_data_store implements cache_is_key_awar
         $this->purge();
     }
 
+    /**
+     * Performs any necessary operation when the store instance is being deleted,
+     * regardless the store being initialised with a definition ({@link initialise()}).
+     *
+     * @link http://tracker.moodle.org/browse/MDL-36363
+     * @see cleanup()
+     */
+    public function instance_deleted() {
+        $this->cleanup();
+    }
+
     /**
      * Generates an instance of the cache store that can be used for testing.
      *

cache/stores/static/lib.php

@@ -376,6 +376,17 @@ class cachestore_static extends static_data_store implements cache_is_key_aware
         $this->purge();
     }
 
+    /**
+     * Performs any necessary operation when the store instance is being deleted,
+     * regardless the store being initialised with a definition ({@link initialise()}).
+     *
+     * @link http://tracker.moodle.org/browse/MDL-36363
+     * @see cleanup()
+     */
+    public function instance_deleted() {
+        $this->cleanup();
+    }
+
     /**
      * Generates an instance of the cache store that can be used for testing.
      *