Massive refactor of the Android invalidation code.

components/invalidation/invalidation_service_android.cc

+// Copyright 2014 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.
+
+#include "components/invalidation/invalidation_service_android.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
+#include "base/android/jni_string.h"
+#include "base/callback.h"
+#include "components/invalidation/object_id_invalidation_map.h"
+#include "google/cacheinvalidation/types.pb.h"
+#include "jni/InvalidationService_jni.h"
+
+using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
+
+namespace invalidation {
+
+InvalidationServiceAndroid::InvalidationServiceAndroid(jobject context)
+    : invalidator_state_(syncer::INVALIDATIONS_ENABLED),
+      logger_() {
+  DCHECK(CalledOnValidThread());
+  JNIEnv* env = base::android::AttachCurrentThread();
+  base::android::ScopedJavaLocalRef<jobject> local_java_ref =
+      Java_InvalidationService_create(env,
+          context,
+          reinterpret_cast<intptr_t>(this));
+  java_ref_.Reset(env, local_java_ref.obj());
+}
+
+InvalidationServiceAndroid::~InvalidationServiceAndroid() { }
+
+void InvalidationServiceAndroid::RegisterInvalidationHandler(
+    syncer::InvalidationHandler* handler) {
+  DCHECK(CalledOnValidThread());
+  invalidator_registrar_.RegisterHandler(handler);
+  logger_.OnRegistration(handler->GetOwnerName());
+}
+
+void InvalidationServiceAndroid::UpdateRegisteredInvalidationIds(
+    syncer::InvalidationHandler* handler,
+    const syncer::ObjectIdSet& ids) {
+  DCHECK(CalledOnValidThread());
+  JNIEnv* env = base::android::AttachCurrentThread();
+  DCHECK(env);
+
+  invalidator_registrar_.UpdateRegisteredIds(handler, ids);
+  const syncer::ObjectIdSet& registered_ids =
+      invalidator_registrar_.GetAllRegisteredIds();
+
+  // To call the corresponding method on the Java invalidation service, split
+  // the object ids into object source and object name arrays.
+  std::vector<int> sources;
+  std::vector<std::string> names;
+  syncer::ObjectIdSet::const_iterator id;
+  for (id = registered_ids.begin(); id != registered_ids.end(); ++id) {
+    sources.push_back(id->source());
+    names.push_back(id->name());
+  }
+
+  Java_InvalidationService_setRegisteredObjectIds(
+      env,
+      java_ref_.obj(),
+      base::android::ToJavaIntArray(env, sources).obj(),
+      base::android::ToJavaArrayOfStrings(env, names).obj());
+
+  logger_.OnUpdateIds(invalidator_registrar_.GetSanitizedHandlersIdsMap());
+}
+
+void InvalidationServiceAndroid::UnregisterInvalidationHandler(
+    syncer::InvalidationHandler* handler) {
+  DCHECK(CalledOnValidThread());
+  invalidator_registrar_.UnregisterHandler(handler);
+  logger_.OnUnregistration(handler->GetOwnerName());
+}
+
+syncer::InvalidatorState
+InvalidationServiceAndroid::GetInvalidatorState() const {
+  DCHECK(CalledOnValidThread());
+  return invalidator_state_;
+}
+
+std::string InvalidationServiceAndroid::GetInvalidatorClientId() const {
+  DCHECK(CalledOnValidThread());
+  JNIEnv* env = base::android::AttachCurrentThread();
+  DCHECK(env);
+
+  // Ask the Java code to for the invalidator ID it's currently using.
+  base::android::ScopedJavaLocalRef<_jbyteArray*> id_bytes_java =
+      Java_InvalidationService_getInvalidatorClientId(env, java_ref_.obj());
+
+  // Convert it into a more convenient format for C++.
+  std::vector<uint8_t> id_bytes;
+  base::android::JavaByteArrayToByteVector(env, id_bytes_java.obj(), &id_bytes);
+  std::string id(id_bytes.begin(), id_bytes.end());
+
+  return id;
+}
+
+InvalidationLogger* InvalidationServiceAndroid::GetInvalidationLogger() {
+  return &logger_;
+}
+
+void InvalidationServiceAndroid::RequestDetailedStatus(
+    base::Callback<void(const base::DictionaryValue&)> return_callback) const {
+}
+
+IdentityProvider* InvalidationServiceAndroid::GetIdentityProvider() {
+  return NULL;
+}
+
+void InvalidationServiceAndroid::TriggerStateChangeForTest(
+    syncer::InvalidatorState state) {
+  DCHECK(CalledOnValidThread());
+  invalidator_state_ = state;
+  invalidator_registrar_.UpdateInvalidatorState(invalidator_state_);
+}
+
+void InvalidationServiceAndroid::RequestSync(JNIEnv* env,
+                                             jobject obj,
+                                             jint object_source,
+                                             jstring java_object_id,
+                                             jlong version,
+                                             jstring java_state) {
+  invalidation::ObjectId object_id(object_source,
+      ConvertJavaStringToUTF8(env, java_object_id));
+
+  syncer::ObjectIdInvalidationMap object_ids_with_states;
+
+  if (version == ipc::invalidation::Constants::UNKNOWN) {
+    object_ids_with_states.Insert(
+        syncer::Invalidation::InitUnknownVersion(object_id));
+  } else {
+    ObjectIdVersionMap::iterator it =
+        max_invalidation_versions_.find(object_id);
+    if ((it != max_invalidation_versions_.end()) &&
+        (version <= it->second)) {
+      DVLOG(1) << "Dropping redundant invalidation with version " << version;
+      return;
+    }
+    max_invalidation_versions_[object_id] = version;
+    object_ids_with_states.Insert(
+        syncer::Invalidation::Init(object_id, version,
+                                   ConvertJavaStringToUTF8(env, java_state)));
+  }
+
+  DispatchInvalidations(object_ids_with_states);
+}
+
+void InvalidationServiceAndroid::RequestSyncForAllTypes(JNIEnv* env,
+                                                        jobject obj) {
+  syncer::ObjectIdInvalidationMap object_ids_with_states;
+  DispatchInvalidations(object_ids_with_states);
+}
+
+void InvalidationServiceAndroid::DispatchInvalidations(
+    syncer::ObjectIdInvalidationMap& object_invalidation_map) {
+  // An empty map implies that we should invalidate all.
+  const syncer::ObjectIdInvalidationMap& effective_invalidation_map =
+      object_invalidation_map.Empty() ?
+      syncer::ObjectIdInvalidationMap::InvalidateAll(
+          invalidator_registrar_.GetAllRegisteredIds()) :
+      object_invalidation_map;
+
+  invalidator_registrar_.DispatchInvalidationsToHandlers(
+      effective_invalidation_map);
+  logger_.OnInvalidation(effective_invalidation_map);
+}
+
+// static
+bool InvalidationServiceAndroid::RegisterJni(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace invalidation