我正在使用[codahale metrics]获取storm的螺栓和喷嘴的度量，并发送到graphite服务器。我怎样才能有时间在螺栓和喷嘴之间发送消息？例如。此代码仅用于每个执行者的度量：

import com.codahale.metrics.Histogram;
import com.codahale.metrics.Meter;
import com.codahale.metrics.Timer;

public class MqttSensorDetailSpout extends BaseRichSpout {
    private Meter tupleMeter;
    private Timer tupleTimer;
    private Histogram tupleHistogram;
    public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
        this.context = context;
        this.collector = collector;
        this.tupleMeter = context.registerMeter("meterSpout-" + this.topic);
        this.tupleTimer = context.registerTimer("timerSpout-" + this.topic);
        this.tupleHistogram = context.registerHistogram("histogramSpout-" + this.topic);
    }
    public void nextTuple() {
        final Timer.Context timeContext = this.tupleTimer.time();
        this.tupleMeter.mark();
        try {
        …
        } finally {
            timeContext.stop();
        }
    }
}

我想知道在执行者之间发送消息所用的时间。我将如何实施它？谢谢，菲利佩