Port messages sent by WebIDBDatabaseImpl to Mojo.

content/child/indexed_db/indexed_db_dispatcher.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_
 #define CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 58 matching lines @@
   void WillStopCurrentWorkerThread() override;
 
   static std::vector<blink::WebIDBObservation> ConvertObservations(
       const std::vector<IndexedDBMsg_Observation>& idb_observation);
 
   void OnMessageReceived(const IPC::Message& msg);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual bool Send(IPC::Message* msg);
 
-  int32_t AddIDBObserver(int32_t ipc_database_id,
-                         int64_t transaction_id,
-                         std::unique_ptr<blink::WebIDBObserver> observer);
+  int32_t RegisterObserver(std::unique_ptr<blink::WebIDBObserver> observer);
 
-  //  The observer with ID's in |observer_ids_to_remove| observe the
-  //  |ipc_database_id|.
-  //  We remove our local references to these observer objects, and send an IPC
-  //  to clean up the observers from the backend.
-  void RemoveIDBObserversFromDatabase(
-      int32_t ipc_database_id,
-      const std::vector<int32_t>& observer_ids_to_remove);
-
-  // Removes observers from our local map observers_ . No IPC message generated.
-  void RemoveIDBObservers(const std::set<int32_t>& observer_ids_to_remove);
+  // Removes observers from our local map observers_.
+  void RemoveObservers(const std::vector<int32_t>& observer_ids_to_remove);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual void RequestIDBCursorAdvance(unsigned long count,
                                        blink::WebIDBCallbacks* callbacks_ptr,
                                        int32_t ipc_cursor_id,
                                        int64_t transaction_id);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual void RequestIDBCursorContinue(const IndexedDBKey& key,
                                         const IndexedDBKey& primary_key,
                                         blink::WebIDBCallbacks* callbacks_ptr,
                                         int32_t ipc_cursor_id,
                                         int64_t transaction_id);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual void RequestIDBCursorPrefetch(int n,
                                         blink::WebIDBCallbacks* callbacks_ptr,
                                         int32_t ipc_cursor_id);
 
   // This method is virtual so it can be overridden in unit tests.
   virtual void RequestIDBCursorPrefetchReset(int used_prefetches,
                                              int unused_prefetches,
                                              int32_t ipc_cursor_id);
 
-  void RequestIDBDatabaseClose(int32_t ipc_database_id);
-
-  void NotifyIDBDatabaseVersionChangeIgnored(int32_t ipc_database_id);
-
-  void RequestIDBDatabaseCreateTransaction(
-      int32_t ipc_database_id,
-      int64_t transaction_id,
-      blink::WebVector<long long> object_store_ids,
-      blink::WebIDBTransactionMode mode);
-
-  void RequestIDBDatabaseGet(int32_t ipc_database_id,
-                             int64_t transaction_id,
-                             int64_t object_store_id,
-                             int64_t index_id,
-                             const IndexedDBKeyRange& key_range,
-                             bool key_only,
-                             blink::WebIDBCallbacks* callbacks);
-
-  void RequestIDBDatabaseGetAll(int32_t ipc_database_id,
-                                int64_t transaction_id,
-                                int64_t object_store_id,
-                                int64_t index_id,
-                                const IndexedDBKeyRange& key_range,
-                                bool key_only,
-                                int64_t max_count,
-                                blink::WebIDBCallbacks* callbacks);
-
-  void RequestIDBDatabasePut(
-      int32_t ipc_database_id,
-      int64_t transaction_id,
-      int64_t object_store_id,
-      const blink::WebData& value,
-      const blink::WebVector<blink::WebBlobInfo>& web_blob_info,
-      const IndexedDBKey& key,
-      blink::WebIDBPutMode put_mode,
-      blink::WebIDBCallbacks* callbacks,
-      const blink::WebVector<long long>& index_ids,
-      const blink::WebVector<blink::WebVector<blink::WebIDBKey>>& index_keys);
-
-  void RequestIDBDatabaseOpenCursor(int32_t ipc_database_id,
-                                    int64_t transaction_id,
-                                    int64_t object_store_id,
-                                    int64_t index_id,
-                                    const IndexedDBKeyRange& key_range,
-                                    blink::WebIDBCursorDirection direction,
-                                    bool key_only,
-                                    blink::WebIDBTaskType task_type,
-                                    blink::WebIDBCallbacks* callbacks);
-
-  void RequestIDBDatabaseCount(int32_t ipc_database_id,
-                               int64_t transaction_id,
-                               int64_t object_store_id,
-                               int64_t index_id,
-                               const IndexedDBKeyRange& key_range,
-                               blink::WebIDBCallbacks* callbacks);
-
-  void RequestIDBDatabaseDeleteRange(int32_t ipc_database_id,
-                                     int64_t transaction_id,
-                                     int64_t object_store_id,
-                                     const IndexedDBKeyRange& key_range,
-                                     blink::WebIDBCallbacks* callbacks);
-
-  void RequestIDBDatabaseClear(int32_t ipc_database_id,
-                               int64_t transaction_id,
-                               int64_t object_store_id,
-                               blink::WebIDBCallbacks* callbacks);
+  void RegisterCursor(int32_t ipc_cursor_id, WebIDBCursorImpl* cursor);
 
   virtual void CursorDestroyed(int32_t ipc_cursor_id);
-  void DatabaseDestroyed(int32_t ipc_database_id);
-  blink::WebIDBDatabase* RegisterDatabase(int32_t ipc_database_id);
+
+  enum { kAllCursors = -1 };
+
+  // Reset cursor prefetch caches for all cursors except exception_cursor_id.
+  void ResetCursorPrefetchCaches(int64_t transaction_id,
+                                 int32_t ipc_exception_cursor_id);
 
   void RegisterMojoOwnedCallbacks(
       IndexedDBCallbacksImpl::InternalState* callback_state);
   void UnregisterMojoOwnedCallbacks(
       IndexedDBCallbacksImpl::InternalState* callback_state);
   void RegisterMojoOwnedDatabaseCallbacks(
       blink::WebIDBDatabaseCallbacks* callback_state);
   void UnregisterMojoOwnedDatabaseCallbacks(
       blink::WebIDBDatabaseCallbacks* callback_state);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorReset);
   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorTransactionId);
-  FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, ValueSizeTest);
-  FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, KeyAndValueSizeTest);
-
-  enum { kAllCursors = -1 };
 
   static int32_t CurrentWorkerId() { return WorkerThread::GetCurrentId(); }
 
   template <typename T>
   void init_params(T* params, blink::WebIDBCallbacks* callbacks_ptr) {
     std::unique_ptr<blink::WebIDBCallbacks> callbacks(callbacks_ptr);
     params->ipc_thread_id = CurrentWorkerId();
     params->ipc_callbacks_id = pending_callbacks_.Add(callbacks.release());
   }
 
   // IDBCallback message handlers.
-  void OnSuccessIndexedDBKey(int32_t ipc_thread_id,
-                             int32_t ipc_callbacks_id,
-                             const IndexedDBKey& key);
-
-  void OnSuccessOpenCursor(
-      const IndexedDBMsg_CallbacksSuccessIDBCursor_Params& p);
   void OnSuccessCursorContinue(
       const IndexedDBMsg_CallbacksSuccessCursorContinue_Params& p);
   void OnSuccessCursorPrefetch(
       const IndexedDBMsg_CallbacksSuccessCursorPrefetch_Params& p);
   void OnSuccessValue(const IndexedDBMsg_CallbacksSuccessValue_Params& p);
-  void OnSuccessArray(const IndexedDBMsg_CallbacksSuccessArray_Params& p);
   void OnSuccessInteger(int32_t ipc_thread_id,
                         int32_t ipc_callbacks_id,
                         int64_t value);
-  void OnSuccessUndefined(int32_t ipc_thread_id, int32_t ipc_callbacks_id);
   void OnError(int32_t ipc_thread_id,
                int32_t ipc_callbacks_id,
                int code,
                const base::string16& message);
   void OnDatabaseChanges(int32_t ipc_thread_id,
                          const IndexedDBMsg_ObserverChanges&);
 
-  // Reset cursor prefetch caches for all cursors except exception_cursor_id.
-  void ResetCursorPrefetchCaches(int64_t transaction_id,
-                                 int32_t ipc_exception_cursor_id);
-
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
-  // Maximum size (in bytes) of value/key pair allowed for put requests. Any
-  // requests larger than this size will be rejected.
-  // Used by unit tests to exercise behavior without allocating huge chunks
-  // of memory.
-  size_t max_put_value_size_ = kMaxIDBMessageSizeInBytes;
-
   // Careful! WebIDBCallbacks wraps non-threadsafe data types. It must be
   // destroyed and used on the same thread it was created on.
   IDMap<blink::WebIDBCallbacks, IDMapOwnPointer> pending_callbacks_;
   IDMap<blink::WebIDBObserver, IDMapOwnPointer> observers_;
 
   // Holds pointers to the worker-thread owned state of IndexedDBCallbacksImpl
   // and IndexedDBDatabaseCallbacksImpl objects to makes sure that it is
   // destroyed on thread exit if the Mojo pipe is not yet closed. Otherwise the
   // object will leak because the thread's task runner is no longer executing
   // tasks.
   std::unordered_set<IndexedDBCallbacksImpl::InternalState*>
       mojo_owned_callback_state_;
   std::unordered_set<blink::WebIDBDatabaseCallbacks*>
       mojo_owned_database_callback_state_;
 
   // Maps the ipc_callback_id from an open cursor request to the request's
   // transaction_id. Used to assign the transaction_id to the WebIDBCursorImpl
   // when it is created.
   std::map<int32_t, int64_t> cursor_transaction_ids_;
 
   // Map from cursor id to WebIDBCursorImpl.
   std::map<int32_t, WebIDBCursorImpl*> cursors_;
 
-  std::map<int32_t, WebIDBDatabaseImpl*> databases_;
-
   DISALLOW_COPY_AND_ASSIGN(IndexedDBDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_