| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package org.apache.storm.utils; |
| |
| import com.codahale.metrics.Gauge; |
| import java.io.Closeable; |
| import java.util.concurrent.atomic.AtomicLong; |
| import org.apache.storm.metric.internal.RateTracker; |
| import org.apache.storm.metrics2.StormMetricRegistry; |
| import org.apache.storm.shade.org.jctools.queues.MpscArrayQueue; |
| import org.apache.storm.shade.org.jctools.queues.MpscUnboundedArrayQueue; |
| |
| @SuppressWarnings("checkstyle:AbbreviationAsWordInName") |
| public class JCQueueMetrics implements Closeable { |
| private final RateTracker arrivalsTracker = new RateTracker(10000, 10); |
| private final RateTracker insertFailuresTracker = new RateTracker(10000, 10); |
| private final AtomicLong droppedMessages = new AtomicLong(0); |
| |
| public JCQueueMetrics(String metricNamePrefix, String topologyId, String componentId, int taskId, int port, |
| StormMetricRegistry metricRegistry, MpscArrayQueue<Object> receiveQ, |
| MpscUnboundedArrayQueue<Object> overflowQ) { |
| |
| Gauge<Integer> cap = new Gauge<Integer>() { |
| @Override |
| public Integer getValue() { |
| return receiveQ.capacity(); |
| } |
| }; |
| |
| Gauge<Float> pctFull = new Gauge<Float>() { |
| @Override |
| public Float getValue() { |
| return (1.0F * receiveQ.size() / receiveQ.capacity()); |
| } |
| }; |
| |
| Gauge<Integer> pop = new Gauge<Integer>() { |
| @Override |
| public Integer getValue() { |
| return receiveQ.size(); |
| } |
| }; |
| |
| Gauge<Double> arrivalRate = new Gauge<Double>() { |
| @Override |
| public Double getValue() { |
| return arrivalsTracker.reportRate(); |
| } |
| }; |
| |
| Gauge<Double> sojourn = new Gauge<Double>() { |
| @Override |
| public Double getValue() { |
| // Assume the recvQueue is stable, in which the arrival rate is equal to the consumption rate. |
| // If this assumption does not hold, the calculation of sojourn time should also consider |
| // departure rate according to Queuing Theory. |
| return receiveQ.size() / Math.max(arrivalsTracker.reportRate(), 0.00001) * 1000.0; |
| } |
| }; |
| |
| Gauge<Double> insertFailures = new Gauge<Double>() { |
| @Override |
| public Double getValue() { |
| return insertFailuresTracker.reportRate(); |
| } |
| }; |
| |
| Gauge<Long> dropped = new Gauge<Long>() { |
| @Override |
| public Long getValue() { |
| return droppedMessages.get(); |
| } |
| }; |
| |
| Gauge<Integer> overflow = new Gauge<Integer>() { |
| @Override |
| public Integer getValue() { |
| return overflowQ.size(); |
| } |
| }; |
| |
| metricRegistry.gauge(metricNamePrefix + "-capacity", cap, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-pct_full", pctFull, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-population", pop, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-arrival_rate_secs", arrivalRate, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-sojourn_time_ms", sojourn, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-insert_failures", insertFailures, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-dropped_messages", dropped, topologyId, componentId, taskId, port); |
| metricRegistry.gauge(metricNamePrefix + "-overflow", overflow, topologyId, componentId, taskId, port); |
| } |
| |
| public void notifyArrivals(long counts) { |
| arrivalsTracker.notify(counts); |
| } |
| |
| public void notifyInsertFailure() { |
| insertFailuresTracker.notify(1); |
| } |
| |
| public void notifyDroppedMsg() { |
| droppedMessages.incrementAndGet(); |
| } |
| |
| @Override |
| public void close() { |
| arrivalsTracker.close(); |
| insertFailuresTracker.close(); |
| } |
| } |