监控ThreadPoolExecutor具体Task在Queue中等待时间

可监控_ThreadPoolExecutor

• 主要关心的问题:

  * 最关心的监控数据:
  * 1.task队列中等待时间
  * 2.task任务执行时间
  *
  *  两种方案：
  * 1. future_task
  * 2. queue
  * 注意:Config-自动获取配置文件注解(后面有时间写)
  

• 处理:

  • 继承,初始化构造方法

    private static MonitoringLinkedBlockingQueue monitoringQueue = new MonitoringLinkedBlockingQueue(maxQueueSize);
    
    public MonitoringThreadPoolExecutor() {
        super(CPU_PROCESSOR_NUM << 1, CPU_PROCESSOR_NUM << 2, 50, TimeUnit.SECONDS,
                monitoringQueue,
                new NamedThreadFactory(THREAD_FACTORY_NAME, false), new RejectedExecutionHandler() {
                    @Override
                    public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
                        Monitor.recordOne("monitoring_thread_poll_task_reject");
                    }
                });
        //设置为true,corePoolSize_alivetime后自动销毁
        allowCoreThreadTimeOut(true);
    }

  • init-基本监控定时获取

    @PostConstruct
    private void init() {
    //添加常用监控
    final ScheduledExecutorService coreMonitorService = Executors.newScheduledThreadPool(1);
    coreMonitorService.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            Monitor.recordSize(THREAD_FACTORY_NAME + "_active_thread_count", getActiveCount());
            Monitor.recordSize(THREAD_FACTORY_NAME + "_pool_size", getPoolSize());
            Monitor.recordSize(THREAD_FACTORY_NAME + "_queue_size", getQueue().size());
            Monitor.recordSize(THREAD_FACTORY_NAME + "_largest_pool_size", getLargestPoolSize());
            Monitor.recordSize(THREAD_FACTORY_NAME + "_task_count", getTaskCount());
            Monitor.recordSize(THREAD_FACTORY_NAME + "_completed_task_count", getCompletedTaskCount());
        }
    }, 1L, 2L, TimeUnit.SECONDS);
    
    Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
        @Override
        public void run() {
            shutdown();
            coreMonitorService.shutdown();
        }
    }));
    }

  • 重写submit

    @Override
    public MonitoringFutureTask submit(Runnable task){
    if (task == null) {
        throw new NullPointerException();
    }
    if (task instanceof NamedRunnable) {
        MonitoringFutureTask monitoringFutureTask = new MonitoringFutureTask<>(task, null);
        execute(monitoringFutureTask);
        return monitoringFutureTask;
    }else {
        throw new ForbiddenException("请使用NamedRunnable！");
    }
    }

  • 动态修改线程池核心配置

    @Config("can_monitor_thread_pool_executor.properties")
    private void changeProperties(Map config) {
    logger.info("can_monitor_thread_pool_executor:{}", config);
    if (config != null) {
        int coreSize = IntegerUtil.parseStrToInt(config.get("coreSize"));
        if (coreSize > 0) {
            setCorePoolSize(coreSize);
        }
        int maxSize = IntegerUtil.parseStrToInt(config.get("maxSize"));
        if (maxSize > 0) {
            setMaximumPoolSize(maxSize);
        }
        int queueSize = IntegerUtil.parseStrToInt(config.get("queueSize"));
        if (queueSize > 0) {
            monitoringQueue.setMaxQueueSize(queueSize);
        }
        int keepAliveTime = IntegerUtil.parseStrToInt(config.get("keepAliveTime"));
        if (keepAliveTime > 0) {
            String timeUnitStr = config.get("timeUnit");
            if (timeUnitStr != null) {
                TimeUnit timeUnit;
                try {
                    timeUnit = TimeUnit.valueOf(timeUnitStr);
                    setKeepAliveTime(keepAliveTime, timeUnit);
                } catch (IllegalArgumentException e) {
                    Monitor.recordOne("timeUnit_config_error");
                    setKeepAliveTime(keepAliveTime, TimeUnit.SECONDS);
                }
            } else {
                setKeepAliveTime(keepAliveTime, TimeUnit.SECONDS);
            }
        }
    }
    }

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