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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 "chromeos/dbus/image_burner_client.h"
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
namespace {
// The ImageBurnerClient implementation.
class ImageBurnerClientImpl : public ImageBurnerClient {
public:
explicit ImageBurnerClientImpl(dbus::Bus* bus)
: proxy_(NULL),
weak_ptr_factory_(this) {
proxy_ = bus->GetObjectProxy(
imageburn::kImageBurnServiceName,
dbus::ObjectPath(imageburn::kImageBurnServicePath));
proxy_->ConnectToSignal(
imageburn::kImageBurnServiceInterface,
imageburn::kSignalBurnFinishedName,
base::Bind(&ImageBurnerClientImpl::OnBurnFinished,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&ImageBurnerClientImpl::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
proxy_->ConnectToSignal(
imageburn::kImageBurnServiceInterface,
imageburn::kSignalBurnUpdateName,
base::Bind(&ImageBurnerClientImpl::OnBurnProgressUpdate,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&ImageBurnerClientImpl::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
virtual ~ImageBurnerClientImpl() {}
// ImageBurnerClient override.
virtual void BurnImage(const std::string& from_path,
const std::string& to_path,
const ErrorCallback& error_callback) OVERRIDE {
dbus::MethodCall method_call(imageburn::kImageBurnServiceInterface,
imageburn::kBurnImage);
dbus::MessageWriter writer(&method_call);
writer.AppendString(from_path);
writer.AppendString(to_path);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&ImageBurnerClientImpl::OnBurnImage,
weak_ptr_factory_.GetWeakPtr(),
error_callback));
}
// ImageBurnerClient override.
virtual void SetEventHandlers(
const BurnFinishedHandler& burn_finished_handler,
const BurnProgressUpdateHandler& burn_progress_update_handler) OVERRIDE {
burn_finished_handler_ = burn_finished_handler;
burn_progress_update_handler_ = burn_progress_update_handler;
}
// ImageBurnerClient override.
virtual void ResetEventHandlers() OVERRIDE {
burn_finished_handler_.Reset();
burn_progress_update_handler_.Reset();
}
private:
// Called when a response for BurnImage is received
void OnBurnImage(ErrorCallback error_callback, dbus::Response* response) {
if (!response) {
error_callback.Run();
return;
}
}
// Handles burn_finished signal and calls |handler|.
void OnBurnFinished(dbus::Signal* signal) {
dbus::MessageReader reader(signal);
std::string target_path;
bool success;
std::string error;
if (!reader.PopString(&target_path) ||
!reader.PopBool(&success) ||
!reader.PopString(&error)) {
LOG(ERROR) << "Invalid signal: " << signal->ToString();
return;
}
if (!burn_finished_handler_.is_null())
burn_finished_handler_.Run(target_path, success, error);
}
// Handles burn_progress_udpate signal and calls |handler|.
void OnBurnProgressUpdate(dbus::Signal* signal) {
dbus::MessageReader reader(signal);
std::string target_path;
int64 num_bytes_burnt;
int64 total_size;
if (!reader.PopString(&target_path) ||
!reader.PopInt64(&num_bytes_burnt) ||
!reader.PopInt64(&total_size)) {
LOG(ERROR) << "Invalid signal: " << signal->ToString();
return;
}
if (!burn_progress_update_handler_.is_null())
burn_progress_update_handler_.Run(target_path, num_bytes_burnt,
total_size);
}
// Handles the result of signal connection setup.
void OnSignalConnected(const std::string& interface,
const std::string& signal,
bool successed) {
LOG_IF(ERROR, !successed) << "Connect to " << interface << " " <<
signal << " failed.";
}
dbus::ObjectProxy* proxy_;
BurnFinishedHandler burn_finished_handler_;
BurnProgressUpdateHandler burn_progress_update_handler_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<ImageBurnerClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ImageBurnerClientImpl);
};
// A stub implementaion of ImageBurnerClient.
class ImageBurnerClientStubImpl : public ImageBurnerClient {
public:
ImageBurnerClientStubImpl() {}
virtual ~ImageBurnerClientStubImpl() {}
virtual void BurnImage(const std::string& from_path,
const std::string& to_path,
const ErrorCallback& error_callback) OVERRIDE {}
virtual void SetEventHandlers(
const BurnFinishedHandler& burn_finished_handler,
const BurnProgressUpdateHandler& burn_progress_update_handler) OVERRIDE {}
virtual void ResetEventHandlers() OVERRIDE {}
private:
DISALLOW_COPY_AND_ASSIGN(ImageBurnerClientStubImpl);
};
} // namespace
ImageBurnerClient::ImageBurnerClient() {
}
ImageBurnerClient::~ImageBurnerClient() {
}
// static
ImageBurnerClient* ImageBurnerClient::Create(DBusClientImplementationType type,
dbus::Bus* bus) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
return new ImageBurnerClientImpl(bus);
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new ImageBurnerClientStubImpl();
}
} // chromeos
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