AsyncLogger.h

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// Copyright 2024 libsese
//
// 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.
 
 
#pragma once
 
#include <sese/record/Logger.h>
#include <sese/thread/Thread.h>
#include <sese/io/FixedBuilder.h>
 
#include <atomic>
#include <mutex>
#include <condition_variable>
 
namespace sese::record {
 
class  AsyncLogger final : public Logger {
public:
    AsyncLogger();
 
    ~AsyncLogger() noexcept override;
 
    void log(const Event::Ptr &event) noexcept override;
 
    void dump(const void *buffer, size_t length) noexcept override;
 
    void loop() noexcept;
 
protected:
    io::FixedBuilder *currentBuffer;
    io::FixedBuilder *nextBuffer;
    // This queue holds buffers that are ready to be committed
    std::vector<io::FixedBuilder *> buffer2Ready;
 
    std::mutex mutex;
    std::condition_variable conditionVariable;
    std::atomic_bool isShutdown{};
    sese::Thread::Ptr thread;
};
} // namespace sese::record