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// 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 "chrome/browser/chromeos/dbus/cros_dbus_service.h"
#include "base/bind.h"
#include "base/chromeos/chromeos_version.h"
#include "base/stl_util.h"
#include "base/threading/platform_thread.h"
#include "chrome/browser/chromeos/dbus/display_power_service_provider.h"
#include "chrome/browser/chromeos/dbus/liveness_service_provider.h"
#include "chrome/browser/chromeos/dbus/printer_service_provider.h"
#include "chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "dbus/bus.h"
#include "dbus/exported_object.h"
#include "dbus/object_path.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
namespace {
CrosDBusService* g_cros_dbus_service = NULL;
} // namespace
// The CrosDBusService implementation used in production, and unit tests.
class CrosDBusServiceImpl : public CrosDBusService {
public:
explicit CrosDBusServiceImpl(dbus::Bus* bus)
: service_started_(false),
origin_thread_id_(base::PlatformThread::CurrentId()),
bus_(bus) {
}
virtual ~CrosDBusServiceImpl() {
STLDeleteElements(&service_providers_);
}
// Starts the D-Bus service.
void Start() {
// Make sure we're running on the origin thread (i.e. the UI thread in
// production).
DCHECK(OnOriginThread());
// Return if the service has been already started.
if (service_started_)
return;
bus_->RequestOwnership(kLibCrosServiceName,
base::Bind(&CrosDBusServiceImpl::OnOwnership,
base::Unretained(this)));
exported_object_ = bus_->GetExportedObject(
dbus::ObjectPath(kLibCrosServicePath));
for (size_t i = 0; i < service_providers_.size(); ++i)
service_providers_[i]->Start(exported_object_);
service_started_ = true;
VLOG(1) << "CrosDBusServiceImpl started.";
}
// Registers a service provider. This must be done before Start().
// |provider| will be owned by CrosDBusService.
void RegisterServiceProvider(ServiceProviderInterface* provider) {
service_providers_.push_back(provider);
}
private:
// Returns true if the current thread is on the origin thread.
bool OnOriginThread() {
return base::PlatformThread::CurrentId() == origin_thread_id_;
}
// Called when an ownership request is completed.
void OnOwnership(const std::string& service_name,
bool success) {
LOG_IF(ERROR, !success) << "Failed to own: " << service_name;
}
bool service_started_;
base::PlatformThreadId origin_thread_id_;
dbus::Bus* bus_;
scoped_refptr<dbus::ExportedObject> exported_object_;
// Service providers that form CrosDBusService.
std::vector<ServiceProviderInterface*> service_providers_;
};
// The stub CrosDBusService implementation used on Linux desktop,
// which does nothing as of now.
class CrosDBusServiceStubImpl : public CrosDBusService {
public:
CrosDBusServiceStubImpl() {
}
virtual ~CrosDBusServiceStubImpl() {
}
};
// static
void CrosDBusService::Initialize() {
if (g_cros_dbus_service) {
LOG(WARNING) << "CrosDBusService was already initialized";
return;
}
dbus::Bus* bus = DBusThreadManager::Get()->GetSystemBus();
if (base::chromeos::IsRunningOnChromeOS() && bus) {
CrosDBusServiceImpl* service = new CrosDBusServiceImpl(bus);
service->RegisterServiceProvider(ProxyResolutionServiceProvider::Create());
service->RegisterServiceProvider(new DisplayPowerServiceProvider);
service->RegisterServiceProvider(new LivenessServiceProvider);
service->RegisterServiceProvider(new PrinterServiceProvider);
g_cros_dbus_service = service;
service->Start();
} else {
g_cros_dbus_service = new CrosDBusServiceStubImpl;
}
VLOG(1) << "CrosDBusService initialized";
}
// static
void CrosDBusService::InitializeForTesting(
dbus::Bus* bus,
ServiceProviderInterface* proxy_resolution_service) {
if (g_cros_dbus_service) {
LOG(WARNING) << "CrosDBusService was already initialized";
return;
}
CrosDBusServiceImpl* service = new CrosDBusServiceImpl(bus);
service->RegisterServiceProvider(proxy_resolution_service);
service->Start();
g_cros_dbus_service = service;
VLOG(1) << "CrosDBusService initialized";
}
// static
void CrosDBusService::Shutdown() {
delete g_cros_dbus_service;
g_cros_dbus_service = NULL;
VLOG(1) << "CrosDBusService Shutdown completed";
}
CrosDBusService::~CrosDBusService() {
}
CrosDBusService::ServiceProviderInterface::~ServiceProviderInterface() {
}
} // namespace chromeos
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