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

    @PostConstructprivate 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

    @Overridepublic 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<String, String> 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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