sweeper_video/src/main.cpp

// main.cpp
#include "app_config.hpp"
#include "rtmp_manager.hpp"
#include "logger.hpp"
#include "mqtt_client_wrapper.hpp"

#include <thread>
#include <atomic>
#include <csignal>
#include <unistd.h>
#include <chrono>

static std::atomic<bool> g_running(true);

static void signal_handler(int signum)
{
    g_running.store(false, std::memory_order_relaxed);
    const char msg[] = "[MAIN] Signal received, shutting down...\n";
    write(STDERR_FILENO, msg, sizeof(msg) - 1);
}

int main()
{
    // 安装信号处理器
    struct sigaction sa{};
    sa.sa_handler = signal_handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGINT, &sa, nullptr);
    sigaction(SIGTERM, &sa, nullptr);
    signal(SIGPIPE, SIG_IGN);

    // 初始化日志
    Logger::set_log_to_file(get_executable_dir_file_path("app.log"));
    LOG_INFO("[MAIN] Application starting...");

    try
    {
        // 加载配置
        g_app_config = AppConfig::load_from_file(get_executable_dir_file_path("config.json"));
        LOG_INFO("[MAIN] Loaded config from config.json");
    }
    catch (const std::exception &e)
    {
        LOG_ERROR(std::string("[MAIN] Failed to load config: ") + e.what());
        return -1;
    }

    // 初始化 GStreamer
    RTMPManager::init();

    // 启动 MQTT 线程
    std::thread mqtt_thread([]
                            {
        try
        {
            LOG_INFO("[MAIN] MQTT thread started.");
            mqtt_client_thread_func(); // 在回调里执行推流控制
        }
        catch (const std::exception &e)
        {
            LOG_ERROR(std::string("[MAIN] MQTT thread crashed: ") + e.what());
        }
        LOG_INFO("[MAIN] MQTT thread exiting..."); });

    // 主循环，仅等待退出信号
    while (g_running.load(std::memory_order_relaxed))
        std::this_thread::sleep_for(std::chrono::milliseconds(200));

    LOG_INFO("[MAIN] Shutdown requested. Cleaning up...");

    // 停止所有 RTMP 流
    RTMPManager::stop_all();

    // 等待 MQTT 线程退出
    if (mqtt_thread.joinable())
    {
        mqtt_thread.join();
        LOG_INFO("[MAIN] MQTT thread joined.");
    }

    LOG_INFO("[MAIN] Application exited cleanly.");
    return 0;
}