[Sync] Make InvalidationNotifier use PushClient

sync/notifier/push_client_channel.cc

+// Copyright (c) 2012 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 "sync/notifier/push_client_channel.h"
+
+#include "base/stl_util.h"
+#include "google/cacheinvalidation/v2/client_gateway.pb.h"
+#include "jingle/notifier/listener/push_client.h"
+
+namespace sync_notifier {
+
+namespace {
+
+const char kBotJid[] = "tango@bot.talk.google.com";
+const char kChannelName[] = "tango_raw";
+
+}  // namespace
+
+PushClientChannel::PushClientChannel(
+    scoped_ptr<notifier::PushClient> push_client)
+    : push_client_(push_client.Pass()),
+      notifications_enabled_(false),
+      scheduling_hash_(0) {
+  push_client_->AddObserver(this);
+  notifier::Subscription subscription;
+  subscription.channel = kChannelName;
+  subscription.from = "";
+  notifier::SubscriptionList subscriptions;
+  subscriptions.push_back(subscription);
+  push_client_->UpdateSubscriptions(subscriptions);
+}
+
+PushClientChannel::~PushClientChannel() {
+  push_client_->RemoveObserver(this);
+  STLDeleteElements(&network_status_receivers_);
+}
+
+void PushClientChannel::UpdateCredentials(
+    const std::string& email, const std::string& token) {
+  push_client_->UpdateCredentials(email, token);
+}
+
+void PushClientChannel::SendMessage(const std::string& outgoing_message) {
+  push_client_->SendNotification(
+      EncodeMessage(outgoing_message, service_context_, scheduling_hash_));
+}
+
+void PushClientChannel::SetMessageReceiver(
+    invalidation::MessageCallback* incoming_receiver) {
+  incoming_receiver_.reset(incoming_receiver);
+}
+
+void PushClientChannel::AddNetworkStatusReceiver(
+    invalidation::NetworkStatusCallback* network_status_receiver) {
+  network_status_receiver->Run(notifications_enabled_);
+  network_status_receivers_.push_back(network_status_receiver);
+}
+
+void PushClientChannel::SetSystemResources(
+    invalidation::SystemResources* resources) {
+  // Do nothing.
+}
+
+void PushClientChannel::OnNotificationStateChange(
+    bool notifications_enabled) {
+  for (NetworkStatusReceiverList::const_iterator it =
+           network_status_receivers_.begin();
+       it != network_status_receivers_.end(); ++it) {
+    (*it)->Run(notifications_enabled);
+  }
+}
+
+void PushClientChannel::OnIncomingNotification(
+    const notifier::Notification& notification) {
+  if (!incoming_receiver_.get()) {
+    DLOG(ERROR) << "No receiver for incoming notification";
+    return;
+  }
+  std::string message;
+  if (!DecodeMessage(notification,
+                     &message, &service_context_, &scheduling_hash_)) {
+    DLOG(ERROR) << "Could not parse ClientGatewayMessage from: "
+                << notification.ToString();
+  }
+  incoming_receiver_->Run(message);
+}
+
+const std::string& PushClientChannel::GetServiceContextForTest() const {
+  return service_context_;
+}
+
+int64 PushClientChannel::GetSchedulingHashForTest() const {
+  return scheduling_hash_;
+}
+
+notifier::Notification PushClientChannel::EncodeMessageForTest(
+    const std::string& message, const std::string& service_context,
+    int64 scheduling_hash) {
+  return EncodeMessage(message, service_context, scheduling_hash);
+}
+
+bool PushClientChannel::DecodeMessageForTest(
+    const notifier::Notification& notification,
+    std::string* message,
+    std::string* service_context,
+    int64* scheduling_hash) {
+  return DecodeMessage(
+      notification, message, service_context, scheduling_hash);
+}
+
+notifier::Notification PushClientChannel::EncodeMessage(
+    const std::string& message, const std::string& service_context,
+    int64 scheduling_hash) {
+  ipc::invalidation::ClientGatewayMessage envelope;
+  envelope.set_is_client_to_server(true);
+  if (!service_context.empty()) {
+    envelope.set_service_context(service_context);
+    envelope.set_rpc_scheduling_hash(scheduling_hash);
+  }
+  envelope.set_network_message(message);
+
+  notifier::Recipient recipient;
+  recipient.to = kBotJid;
+  notifier::Notification notification;
+  notification.channel = kChannelName;
+  notification.recipients.push_back(recipient);
+  envelope.SerializeToString(&notification.data);
+  return notification;
+}
+
+bool PushClientChannel::DecodeMessage(
+    const notifier::Notification& notification,
+    std::string* message,
+    std::string* service_context,
+    int64* scheduling_hash) {
+  ipc::invalidation::ClientGatewayMessage envelope;
+  if (!envelope.ParseFromString(notification.data)) {
+    return false;
+  }
+  *message = envelope.network_message();
+  if (envelope.has_service_context()) {
+    *service_context = envelope.service_context();
+  }
+  if (envelope.has_rpc_scheduling_hash()) {
+    *scheduling_hash = envelope.rpc_scheduling_hash();
+  }
+  return true;
+}
+
+}  // namespace sync_notifier