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device_claimer.h
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device_claimer.h
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//
// Copyright (C) 2014 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.
//
#ifndef SHILL_DEVICE_CLAIMER_H_
#define SHILL_DEVICE_CLAIMER_H_
#include <set>
#include <string>
#include <base/callback.h>
#include "shill/error.h"
#include "shill/rpc_service_watcher_interface.h"
namespace shill {
class ControlInterface;
class DeviceInfo;
// Provide an abstraction for remote service to claim/release devices
// from/to shill.
class DeviceClaimer {
public:
DeviceClaimer(const std::string& service_name,
DeviceInfo* device_info,
bool default_claimer);
virtual ~DeviceClaimer();
virtual bool Claim(const std::string& device_name, Error* error);
virtual bool Release(const std::string& device_name, Error* error);
// Return true if there are devices claimed by this claimer, false
// otherwise.
virtual bool DevicesClaimed();
// Return true if the specified device is released by this claimer, false
// otherwise.
virtual bool IsDeviceReleased(const std::string& device_name);
const std::string& name() const { return service_name_; }
virtual bool default_claimer() const { return default_claimer_; }
const std::set<std::string>& claimed_device_names() const {
return claimed_device_names_;
}
private:
// Watcher for monitoring the remote RPC service of the claimer.
std::unique_ptr<RPCServiceWatcherInterface> service_watcher_;
// The name of devices that have been claimed by this claimer.
std::set<std::string> claimed_device_names_;
// The name of devices that have been released by this claimer.
std::set<std::string> released_device_names_;
// Service name of the claimer.
std::string service_name_;
DeviceInfo* device_info_;
// Flag indicating if this is the default claimer. When set to true, this
// claimer will only be deleted when shill terminates.
bool default_claimer_;
DISALLOW_COPY_AND_ASSIGN(DeviceClaimer);
};
} // namespace shill
#endif // SHILL_DEVICE_CLAIMER_H_