blob: 087b331590633dff474acb9d73b5f2c1072ade5f [file] [log] [blame]
// 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 <stdint.h>
#include <memory>
#include <vector>
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "chrome/common/service_process.mojom.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "mojo/public/cpp/bindings/binding_set.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "services/service_manager/public/cpp/binder_registry.h"
#include "services/service_manager/public/mojom/interface_provider.mojom.h"
namespace base {
class HistogramDeltaSerialization;
class WaitableEvent;
} // namespace base
// This class handles IPC commands for the service process.
class ServiceIPCServer : public service_manager::mojom::InterfaceProvider,
public chrome::mojom::ServiceProcess {
class Client {
virtual ~Client() {}
// Called when the service process must shut down.
virtual void OnShutdown() = 0;
// Called when a product update is available.
virtual void OnUpdateAvailable() = 0;
// Called when the IPC channel is closed. A return value of true indicates
// that the IPC server should continue listening for new connections.
virtual bool OnIPCClientDisconnect() = 0;
// Called to create a message pipe to use for an IPC Channel connection.
virtual mojo::ScopedMessagePipeHandle CreateChannelMessagePipe() = 0;
Client* client,
const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
base::WaitableEvent* shutdown_event);
~ServiceIPCServer() override;
bool Init();
service_manager::BinderRegistry& binder_registry() {
return binder_registry_;
bool is_ipc_client_connected() const { return ipc_client_connected_; }
friend class ServiceIPCServerTest;
friend class MockServiceIPCServer;
// Helper method to create the sync channel.
void CreateChannel();
void OnChannelError();
// chrome::mojom::ServiceProcess:
void Hello(HelloCallback callback) override;
void GetHistograms(GetHistogramsCallback callback) override;
void UpdateAvailable() override;
void ShutDown() override;
// service_manager::mojom::InterfaceProvider:
void GetInterface(const std::string& interface_name,
mojo::ScopedMessagePipeHandle pipe) override;
void HandleServiceProcessConnection(
chrome::mojom::ServiceProcessRequest request);
Client* client_;
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
base::WaitableEvent* shutdown_event_;
// Indicates whether an IPC client is currently connected to the channel.
bool ipc_client_connected_ = false;
// Calculates histograms deltas.
mojo::Binding<service_manager::mojom::InterfaceProvider> binding_;
mojo::BindingSet<chrome::mojom::ServiceProcess> service_process_bindings_;
service_manager::BinderRegistry binder_registry_;