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//
// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/cros/dbus_connection.h"
#include <base/time/time.h>
namespace chromeos_update_engine {
namespace {
const int kDBusSystemMaxWaitSeconds = 2 * 60;
DBusConnection* dbus_connection_singleton = nullptr;
} // namespace
DBusConnection::DBusConnection() {
// We wait for the D-Bus connection for up two minutes to avoid re-spawning
// the daemon too fast causing thrashing if dbus-daemon is not running.
bus_ = dbus_connection_.ConnectWithTimeout(
base::TimeDelta::FromSeconds(kDBusSystemMaxWaitSeconds));
if (!bus_) {
// TODO(deymo): Make it possible to run update_engine even if dbus-daemon
// is not running or constantly crashing.
LOG(FATAL) << "Failed to initialize DBus, aborting.";
}
CHECK(bus_->SetUpAsyncOperations());
}
const scoped_refptr<dbus::Bus>& DBusConnection::GetDBus() {
CHECK(bus_);
return bus_;
}
DBusConnection* DBusConnection::Get() {
if (!dbus_connection_singleton)
dbus_connection_singleton = new DBusConnection();
return dbus_connection_singleton;
}
} // namespace chromeos_update_engine