content/child/indexed_db/indexed_db_dispatcher.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_
   6 #define CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_
   7
   8 #include <map>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/gtest_prod_util.h"
  13 #include "base/id_map.h"
  14 #include "base/memory/ref_counted.h"
  15 #include "base/strings/nullable_string16.h"
  16 #include "content/child/worker_task_runner.h"
  17 #include "content/common/content_export.h"
  18 #include "ipc/ipc_sync_message_filter.h"
  19 #include "third_party/WebKit/public/platform/WebBlobInfo.h"
  20 #include "third_party/WebKit/public/platform/WebIDBCallbacks.h"
  21 #include "third_party/WebKit/public/platform/WebIDBDatabaseCallbacks.h"
  22 #include "third_party/WebKit/public/platform/WebIDBTypes.h"
  23
  24 struct IndexedDBDatabaseMetadata;
  25 struct IndexedDBMsg_CallbacksSuccessCursorContinue_Params;
  26 struct IndexedDBMsg_CallbacksSuccessCursorPrefetch_Params;
  27 struct IndexedDBMsg_CallbacksSuccessIDBCursor_Params;
  28 struct IndexedDBMsg_CallbacksSuccessValue_Params;
  29 struct IndexedDBMsg_CallbacksSuccessValueWithKey_Params;
  30 struct IndexedDBMsg_CallbacksUpgradeNeeded_Params;
  31
  32 namespace blink {
  33 class WebData;
  34 }
  35
  36 namespace content {
  37 class IndexedDBKey;
  38 class IndexedDBKeyPath;
  39 class IndexedDBKeyRange;
  40 class WebIDBCursorImpl;
  41 class WebIDBDatabaseImpl;
  42 class ThreadSafeSender;
  43
  44 CONTENT_EXPORT extern const size_t kMaxIDBValueSizeInBytes;
  45
  46 // Handle the indexed db related communication for this context thread - the
  47 // main thread and each worker thread have their own copies.
  48 class CONTENT_EXPORT IndexedDBDispatcher : public WorkerTaskRunner::Observer {
  49  public:
  50   // Constructor made public to allow RenderThreadImpl to own a copy without
  51   // failing a NOTREACHED in ThreadSpecificInstance in tests that instantiate
  52   // two copies of RenderThreadImpl on the same thread.  Everyone else probably
  53   // wants to use ThreadSpecificInstance().
  54   explicit IndexedDBDispatcher(ThreadSafeSender* thread_safe_sender);
  55   virtual ~IndexedDBDispatcher();
  56
  57   // |thread_safe_sender| needs to be passed in because if the call leads to
  58   // construction it will be needed.
  59   static IndexedDBDispatcher* ThreadSpecificInstance(
  60       ThreadSafeSender* thread_safe_sender);
  61
  62   // WorkerTaskRunner::Observer implementation.
  63   virtual void OnWorkerRunLoopStopped() OVERRIDE;
  64
  65   static blink::WebIDBMetadata ConvertMetadata(
  66       const IndexedDBDatabaseMetadata& idb_metadata);
  67
  68   void OnMessageReceived(const IPC::Message& msg);
  69
  70   // This method is virtual so it can be overridden in unit tests.
  71   virtual bool Send(IPC::Message* msg);
  72
  73   void RequestIDBFactoryGetDatabaseNames(
  74       blink::WebIDBCallbacks* callbacks,
  75       const std::string& database_identifier);
  76
  77   void RequestIDBFactoryOpen(
  78       const base::string16& name,
  79       int64 version,
  80       int64 transaction_id,
  81       blink::WebIDBCallbacks* callbacks,
  82       blink::WebIDBDatabaseCallbacks* database_callbacks,
  83       const std::string& database_identifier);
  84
  85   void RequestIDBFactoryDeleteDatabase(const base::string16& name,
  86                                        blink::WebIDBCallbacks* callbacks,
  87                                        const std::string& database_identifier);
  88
  89   // This method is virtual so it can be overridden in unit tests.
  90   virtual void RequestIDBCursorAdvance(unsigned long count,
  91                                        blink::WebIDBCallbacks* callbacks_ptr,
  92                                        int32 ipc_cursor_id,
  93                                        int64 transaction_id);
  94
  95   // This method is virtual so it can be overridden in unit tests.
  96   virtual void RequestIDBCursorContinue(const IndexedDBKey& key,
  97                                         const IndexedDBKey& primary_key,
  98                                         blink::WebIDBCallbacks* callbacks_ptr,
  99                                         int32 ipc_cursor_id,
 100                                         int64 transaction_id);
 101
 102   // This method is virtual so it can be overridden in unit tests.
 103   virtual void RequestIDBCursorPrefetch(int n,
 104                                         blink::WebIDBCallbacks* callbacks_ptr,
 105                                         int32 ipc_cursor_id);
 106
 107   // This method is virtual so it can be overridden in unit tests.
 108   virtual void RequestIDBCursorPrefetchReset(int used_prefetches,
 109                                              int unused_prefetches,
 110                                              int32 ipc_cursor_id);
 111
 112   void RequestIDBDatabaseClose(int32 ipc_database_id,
 113                                int32 ipc_database_callbacks_id);
 114
 115   void NotifyIDBDatabaseVersionChangeIgnored(int32 ipc_database_id);
 116
 117   void RequestIDBDatabaseCreateTransaction(
 118       int32 ipc_database_id,
 119       int64 transaction_id,
 120       blink::WebIDBDatabaseCallbacks* database_callbacks_ptr,
 121       blink::WebVector<long long> object_store_ids,
 122       blink::WebIDBTransactionMode mode);
 123
 124   void RequestIDBDatabaseGet(int32 ipc_database_id,
 125                              int64 transaction_id,
 126                              int64 object_store_id,
 127                              int64 index_id,
 128                              const IndexedDBKeyRange& key_range,
 129                              bool key_only,
 130                              blink::WebIDBCallbacks* callbacks);
 131
 132   void RequestIDBDatabasePut(
 133       int32 ipc_database_id,
 134       int64 transaction_id,
 135       int64 object_store_id,
 136       const blink::WebData& value,
 137       const blink::WebVector<blink::WebBlobInfo>& web_blob_info,
 138       const IndexedDBKey& key,
 139       blink::WebIDBPutMode put_mode,
 140       blink::WebIDBCallbacks* callbacks,
 141       const blink::WebVector<long long>& index_ids,
 142       const blink::WebVector<blink::WebVector<blink::WebIDBKey> >& index_keys);
 143
 144   void RequestIDBDatabaseOpenCursor(int32 ipc_database_id,
 145                                     int64 transaction_id,
 146                                     int64 object_store_id,
 147                                     int64 index_id,
 148                                     const IndexedDBKeyRange& key_range,
 149                                     blink::WebIDBCursorDirection direction,
 150                                     bool key_only,
 151                                     blink::WebIDBTaskType task_type,
 152                                     blink::WebIDBCallbacks* callbacks);
 153
 154   void RequestIDBDatabaseCount(int32 ipc_database_id,
 155                                int64 transaction_id,
 156                                int64 object_store_id,
 157                                int64 index_id,
 158                                const IndexedDBKeyRange& key_range,
 159                                blink::WebIDBCallbacks* callbacks);
 160
 161   void RequestIDBDatabaseDeleteRange(int32 ipc_database_id,
 162                                      int64 transaction_id,
 163                                      int64 object_store_id,
 164                                      const IndexedDBKeyRange& key_range,
 165                                      blink::WebIDBCallbacks* callbacks);
 166
 167   void RequestIDBDatabaseClear(int32 ipc_database_id,
 168                                int64 transaction_id,
 169                                int64 object_store_id,
 170                                blink::WebIDBCallbacks* callbacks);
 171
 172   virtual void CursorDestroyed(int32 ipc_cursor_id);
 173   void DatabaseDestroyed(int32 ipc_database_id);
 174
 175  private:
 176   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorReset);
 177   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorTransactionId);
 178   FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, ValueSizeTest);
 179
 180   enum { kAllCursors = -1 };
 181
 182   static int32 CurrentWorkerId() {
 183     return WorkerTaskRunner::Instance()->CurrentWorkerId();
 184   }
 185
 186   template <typename T>
 187   void init_params(T* params, blink::WebIDBCallbacks* callbacks_ptr) {
 188     scoped_ptr<blink::WebIDBCallbacks> callbacks(callbacks_ptr);
 189     params->ipc_thread_id = CurrentWorkerId();
 190     params->ipc_callbacks_id = pending_callbacks_.Add(callbacks.release());
 191   }
 192
 193   // IDBCallback message handlers.
 194   void OnSuccessIDBDatabase(int32 ipc_thread_id,
 195                             int32 ipc_callbacks_id,
 196                             int32 ipc_database_callbacks_id,
 197                             int32 ipc_object_id,
 198                             const IndexedDBDatabaseMetadata& idb_metadata);
 199   void OnSuccessIndexedDBKey(int32 ipc_thread_id,
 200                              int32 ipc_callbacks_id,
 201                              const IndexedDBKey& key);
 202
 203   void OnSuccessOpenCursor(
 204       const IndexedDBMsg_CallbacksSuccessIDBCursor_Params& p);
 205   void OnSuccessCursorContinue(
 206       const IndexedDBMsg_CallbacksSuccessCursorContinue_Params& p);
 207   void OnSuccessCursorPrefetch(
 208       const IndexedDBMsg_CallbacksSuccessCursorPrefetch_Params& p);
 209   void OnSuccessStringList(int32 ipc_thread_id,
 210                            int32 ipc_callbacks_id,
 211                            const std::vector<base::string16>& value);
 212   void OnSuccessValue(const IndexedDBMsg_CallbacksSuccessValue_Params& p);
 213   void OnSuccessValueWithKey(
 214       const IndexedDBMsg_CallbacksSuccessValueWithKey_Params& p);
 215   void OnSuccessInteger(int32 ipc_thread_id,
 216                         int32 ipc_callbacks_id,
 217                         int64 value);
 218   void OnSuccessUndefined(int32 ipc_thread_id, int32 ipc_callbacks_id);
 219   void OnError(int32 ipc_thread_id,
 220                int32 ipc_callbacks_id,
 221                int code,
 222                const base::string16& message);
 223   void OnIntBlocked(int32 ipc_thread_id,
 224                     int32 ipc_callbacks_id,
 225                     int64 existing_version);
 226   void OnUpgradeNeeded(const IndexedDBMsg_CallbacksUpgradeNeeded_Params& p);
 227   void OnAbort(int32 ipc_thread_id,
 228                int32 ipc_database_id,
 229                int64 transaction_id,
 230                int code,
 231                const base::string16& message);
 232   void OnComplete(int32 ipc_thread_id,
 233                   int32 ipc_database_id,
 234                   int64 transaction_id);
 235   void OnForcedClose(int32 ipc_thread_id, int32 ipc_database_id);
 236   void OnIntVersionChange(int32 ipc_thread_id,
 237                           int32 ipc_database_id,
 238                           int64 old_version,
 239                           int64 new_version);
 240
 241   // Reset cursor prefetch caches for all cursors except exception_cursor_id.
 242   void ResetCursorPrefetchCaches(int64 transaction_id,
 243                                  int32 ipc_exception_cursor_id);
 244
 245   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 246
 247   // Careful! WebIDBCallbacks wraps non-threadsafe data types. It must be
 248   // destroyed and used on the same thread it was created on.
 249   IDMap<blink::WebIDBCallbacks, IDMapOwnPointer> pending_callbacks_;
 250   IDMap<blink::WebIDBDatabaseCallbacks, IDMapOwnPointer>
 251       pending_database_callbacks_;
 252
 253   // Maps the ipc_callback_id from an open cursor request to the request's
 254   // transaction_id. Used to assign the transaction_id to the WebIDBCursorImpl
 255   // when it is created.
 256   std::map<int32, int64> cursor_transaction_ids_;
 257
 258   // Map from cursor id to WebIDBCursorImpl.
 259   std::map<int32, WebIDBCursorImpl*> cursors_;
 260
 261   std::map<int32, WebIDBDatabaseImpl*> databases_;
 262
 263   DISALLOW_COPY_AND_ASSIGN(IndexedDBDispatcher);
 264 };
 265
 266 }  // namespace content
 267
 268 #endif  // CONTENT_CHILD_INDEXED_DB_INDEXED_DB_DISPATCHER_H_