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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/cashew_client.h"
#include "base/bind.h"
#include "base/values.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "dbus/values_util.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
namespace {
// Does nothing.
// This method is used to handle results of RequestDataPlansUpdate method call.
void DoNothing(dbus::Response* response) {
}
// The CashewClient implementation.
class CashewClientImpl : public CashewClient {
public:
explicit CashewClientImpl(dbus::Bus* bus)
: proxy_(bus->GetObjectProxy(
cashew::kCashewServiceName,
dbus::ObjectPath(cashew::kCashewServicePath))),
weak_ptr_factory_(this) {
proxy_->ConnectToSignal(
cashew::kCashewServiceInterface,
cashew::kMonitorDataPlanUpdate,
base::Bind(&CashewClientImpl::OnDataPlansUpdate,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&CashewClientImpl::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
// CashewClient override.
virtual void SetDataPlansUpdateHandler(
const DataPlansUpdateHandler& handler) OVERRIDE {
data_plans_update_handler_ = handler;
}
// CashewClient override.
virtual void ResetDataPlansUpdateHandler() OVERRIDE {
data_plans_update_handler_.Reset();
}
// CashewClient override.
virtual void RequestDataPlansUpdate(const std::string& service) OVERRIDE {
dbus::MethodCall method_call(cashew::kCashewServiceInterface,
cashew::kRequestDataPlanFunction);
dbus::MessageWriter writer(&method_call);
writer.AppendString(service);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&DoNothing));
}
private:
// Handles DataPlansUpdate signal.
void OnDataPlansUpdate(dbus::Signal* signal) {
dbus::MessageReader reader(signal);
std::string service;
if (!reader.PopString(&service)) {
LOG(ERROR) << "Invalid signal: " << signal->ToString();
return;
}
scoped_ptr<Value> value(dbus::PopDataAsValue(&reader));
ListValue* data_plans = NULL;
if (!value.get() || !value->GetAsList(&data_plans)) {
LOG(ERROR) << "Invalid signal: " << signal->ToString();
return;
}
if (!data_plans_update_handler_.is_null())
data_plans_update_handler_.Run(service, *data_plans);
}
// 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_;
base::WeakPtrFactory<CashewClientImpl> weak_ptr_factory_;
DataPlansUpdateHandler data_plans_update_handler_;
DISALLOW_COPY_AND_ASSIGN(CashewClientImpl);
};
// A stub implementaion of CashewClient.
class CashewClientStubImpl : public CashewClient {
public:
CashewClientStubImpl() {}
virtual ~CashewClientStubImpl() {}
// CashewClient override.
virtual void SetDataPlansUpdateHandler(
const DataPlansUpdateHandler& handler) OVERRIDE {}
// CashewClient override.
virtual void ResetDataPlansUpdateHandler() OVERRIDE {}
// CashewClient override.
virtual void RequestDataPlansUpdate(const std::string& service) OVERRIDE {}
private:
DISALLOW_COPY_AND_ASSIGN(CashewClientStubImpl);
};
} // namespace
////////////////////////////////////////////////////////////////////////////////
// CashewClient
CashewClient::CashewClient() {}
CashewClient::~CashewClient() {}
// static
CashewClient* CashewClient::Create(DBusClientImplementationType type,
dbus::Bus* bus) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
return new CashewClientImpl(bus);
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new CashewClientStubImpl();
}
} // namespace chromeos
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