Flink做定时器有办法实现类似的功能不？[阿里云实时计算 Flink版] 暂停朗读为您朗读

DataStream input = ...DataStream output = input    .keyBy(value -> value)    .process(new KeyedProcessFunction() {        private transient ValueState countState;        private transient ScheduledFuture timer;        @Override        public void open(Configuration parameters) throws Exception {            super.open(parameters);            // 初始化状态变量            countState = getRuntimeContext().getState(                new ValueStateDescriptor<>("count", Integer.class));            // 注册定时器            timer = getRuntimeContext().getScheduledExecutorService()                .scheduleWithFixedDelay(() -> {                    int count = countState.value() == null ? 0 : countState.value();                    emit(count);                    countState.update(count + 1);                }, 0, 1, TimeUnit.SECONDS);        }        @Override        public void processElement(String value, Context ctx, Collector out) throws Exception {            // 处理输入元素            // 可以在这里更新状态变量、更新定时器等        }        @Override        public void close() throws Exception {            // 取消定时器            timer.cancel(true);            super.close();        }    });