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nearby/sharing/nearby_connection_impl.h
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2024-12-20 12:02:57 -08:00

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// Copyright 2022-2023 Google LLC
//
// 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
//
// https://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 THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_IMPL_H_
#define THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_IMPL_H_
#include <cstdint>
#include <functional>
#include <optional>
#include <queue>
#include <vector>
#include "absl/base/thread_annotations.h"
#include "absl/synchronization/mutex.h"
#include "internal/platform/device_info.h"
#include "sharing/nearby_connection.h"
namespace nearby::sharing {
class NearbyConnectionsManager;
class NearbyConnectionImpl : public NearbyConnection {
public:
explicit NearbyConnectionImpl(nearby::DeviceInfo& device_info);
~NearbyConnectionImpl() override;
// NearbyConnection:
void Read(
std::function<void(std::optional<std::vector<uint8_t>> bytes)> callback)
ABSL_LOCKS_EXCLUDED(mutex_) override;
void SetDisconnectionListener(std::function<void()> listener)
ABSL_LOCKS_EXCLUDED(mutex_) override;
// Add bytes to the read queue, notifying ReadCallback.
void WriteMessage(std::vector<uint8_t> bytes) ABSL_LOCKS_EXCLUDED(mutex_);
private:
nearby::DeviceInfo& device_info_;
absl::Mutex mutex_;
std::function<void(std::optional<std::vector<uint8_t>> bytes)> read_callback_
ABSL_GUARDED_BY(mutex_) = nullptr;
std::function<void()> disconnect_listener_ ABSL_GUARDED_BY(mutex_);
// A read queue. The data that we've read from the remote device ends up here
// until Read() is called to dequeue it.
std::queue<std::vector<uint8_t>> reads_ ABSL_GUARDED_BY(mutex_);
};
} // namespace nearby::sharing
#endif // THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_IMPL_H_