Send IndexedDB observations through IDBDatabaseCallbacks.

third_party/WebKit/Source/modules/indexeddb/IDBDatabase.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "modules/indexeddb/IDBDatabase.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "bindings/core/v8/Nullable.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
+#include "bindings/modules/v8/IDBObserverCallback.h"
 #include "bindings/modules/v8/V8BindingForModules.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/EventQueue.h"
 #include "modules/indexeddb/IDBAny.h"
 #include "modules/indexeddb/IDBEventDispatcher.h"
 #include "modules/indexeddb/IDBIndex.h"
 #include "modules/indexeddb/IDBKeyPath.h"
+#include "modules/indexeddb/IDBObserver.h"
+#include "modules/indexeddb/IDBObserverChanges.h"
 #include "modules/indexeddb/IDBTracing.h"
 #include "modules/indexeddb/IDBVersionChangeEvent.h"
 #include "modules/indexeddb/WebIDBDatabaseCallbacksImpl.h"
 #include "platform/Histogram.h"
 #include "public/platform/modules/indexeddb/WebIDBKeyPath.h"
 #include "public/platform/modules/indexeddb/WebIDBTypes.h"
 #include "wtf/Atomics.h"
 #include <limits>
 #include <memory>
 
@@ skipping 56 matching lines @@
 }
 
 IDBDatabase::~IDBDatabase() {
   if (!m_closePending && m_backend)
     m_backend->close();
 }
 
 DEFINE_TRACE(IDBDatabase) {
   visitor->trace(m_versionChangeTransaction);
   visitor->trace(m_transactions);
+  visitor->trace(m_observers);
   visitor->trace(m_enqueuedEvents);
   visitor->trace(m_databaseCallbacks);
   EventTargetWithInlineData::trace(visitor);
   ActiveDOMObject::trace(visitor);
 }
 
 int64_t IDBDatabase::nextTransactionId() {
   // Only keep a 32-bit counter to allow ports to use the other 32
   // bits of the id.
   static int currentTransactionId = 0;
   return atomicIncrement(&currentTransactionId);
 }
 
+int32_t IDBDatabase::nextObserverId() {
+  static int currentObserverId = 0;
+  return atomicIncrement(&currentObserverId);
+}
+
 void IDBDatabase::setMetadata(const IDBDatabaseMetadata& metadata) {
   m_metadata = metadata;
 }
 
 void IDBDatabase::setDatabaseMetadata(const IDBDatabaseMetadata& metadata) {
   m_metadata.copyFrom(metadata);
 }
 
 void IDBDatabase::transactionCreated(IDBTransaction* transaction) {
   DCHECK(transaction);
@@ skipping 24 matching lines @@
 void IDBDatabase::onAbort(int64_t transactionId, DOMException* error) {
   DCHECK(m_transactions.contains(transactionId));
   m_transactions.get(transactionId)->onAbort(error);
 }
 
 void IDBDatabase::onComplete(int64_t transactionId) {
   DCHECK(m_transactions.contains(transactionId));
   m_transactions.get(transactionId)->onComplete();
 }
 
+void IDBDatabase::onChanges(
+    const std::unordered_map<int32_t, std::vector<int32_t>>&
+        observation_index_map,
+    const WebVector<WebIDBObservation>& observations) {
+  for (const auto& map_entry : observation_index_map) {
+    auto it = m_observers.find(map_entry.first);
+    if (it != m_observers.end()) {
+      IDBObserver* observer = it->value;
+      observer->callback()->call(
+          observer,
+          IDBObserverChanges::create(this, observations, map_entry.second));
+    }
+  }
+}
+
 DOMStringList* IDBDatabase::objectStoreNames() const {
   DOMStringList* objectStoreNames =
       DOMStringList::create(DOMStringList::IndexedDB);
   for (const auto& it : m_metadata.objectStores)
     objectStoreNames->append(it.value->name);
   objectStoreNames->sort();
   return objectStoreNames;
 }
 
 const String& IDBDatabase::getObjectStoreName(int64_t objectStoreId) const {
   const auto& it = m_metadata.objectStores.find(objectStoreId);
   DCHECK(it != m_metadata.objectStores.end());
   return it->value->name;
 }
 
+int32_t IDBDatabase::addObserver(
+    IDBObserver* observer,
+    int64_t transactionId,
+    bool includeTransaction,
+    bool noRecords,
+    bool values,
+    const std::bitset<WebIDBOperationTypeCount>& operationTypes) {
+  int32_t observerId = nextObserverId();
+  m_observers.set(observerId, observer);
+  backend()->addObserver(transactionId, observerId, includeTransaction,
+                         noRecords, values, operationTypes);
+  return observerId;
+}
+
+void IDBDatabase::removeObservers(const Vector<int32_t>& observerIds) {
+  m_observers.removeAll(observerIds);
+  backend()->removeObservers(observerIds);
+}
+
 IDBObjectStore* IDBDatabase::createObjectStore(const String& name,
                                                const IDBKeyPath& keyPath,
                                                bool autoIncrement,
                                                ExceptionState& exceptionState) {
   IDB_TRACE("IDBDatabase::createObjectStore");
   recordApiCallsHistogram(IDBCreateObjectStoreCall);
 
   if (!m_versionChangeTransaction) {
     exceptionState.throwDOMException(
         InvalidStateError,
@@ skipping 343 matching lines @@
 
 void IDBDatabase::recordApiCallsHistogram(IndexedDatabaseMethods method) {
   DEFINE_THREAD_SAFE_STATIC_LOCAL(
       EnumerationHistogram, apiCallsHistogram,
       new EnumerationHistogram("WebCore.IndexedDB.FrontEndAPICalls",
                                IDBMethodsMax));
   apiCallsHistogram.count(method);
 }
 
 }  // namespace blink