| /** |
| * 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.metrics2; |
| |
| import com.codahale.metrics.Counter; |
| import com.codahale.metrics.Meter; |
| import com.codahale.metrics.MetricRegistry; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.storm.Config; |
| import org.apache.storm.cluster.DaemonType; |
| import org.apache.storm.metrics2.reporters.StormReporter; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.task.WorkerTopologyContext; |
| import org.apache.storm.utils.ReflectionUtils; |
| import org.apache.storm.utils.Utils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class StormMetricRegistry { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(StormMetricRegistry.class); |
| |
| private final MetricRegistry registry = new MetricRegistry(); |
| private final List<StormReporter> reporters = new ArrayList<>(); |
| private String hostName = null; |
| |
| public <T> SimpleGauge<T> gauge( |
| T initialValue, String name, String topologyId, String componentId, Integer taskId, Integer port) { |
| String metricName = metricName(name, topologyId, componentId, taskId, port); |
| return (SimpleGauge<T>)registry.gauge(metricName, () -> new SimpleGauge<>(initialValue)); |
| } |
| |
| public JcMetrics jcMetrics(String name, String topologyId, String componentId, Integer taskId, Integer port) { |
| return new JcMetrics( |
| gauge(0L, name + "-capacity", topologyId, componentId, taskId, port), |
| gauge(0L, name + "-population", topologyId, componentId, taskId, port) |
| ); |
| } |
| |
| public Meter meter(String name, WorkerTopologyContext context, String componentId, Integer taskId, String streamId) { |
| String metricName = metricName(name, context.getStormId(), componentId, streamId, taskId, context.getThisWorkerPort()); |
| return registry.meter(metricName); |
| } |
| |
| public Counter counter(String name, WorkerTopologyContext context, String componentId, Integer taskId, String streamId) { |
| String metricName = metricName(name, context.getStormId(), componentId, streamId, taskId, context.getThisWorkerPort()); |
| return registry.counter(metricName); |
| } |
| |
| public Counter counter(String name, String topologyId, String componentId, Integer taskId, Integer workerPort, String streamId) { |
| String metricName = metricName(name, topologyId, componentId, streamId, taskId, workerPort); |
| return registry.counter(metricName); |
| } |
| |
| public MetricRegistry registry() { |
| return registry; |
| } |
| |
| public void start(Map<String, Object> stormConfig, DaemonType type) { |
| try { |
| hostName = dotToUnderScore(Utils.localHostname()); |
| } catch (UnknownHostException e) { |
| LOG.warn("Unable to determine hostname while starting the metrics system. Hostname will be reported" |
| + " as 'localhost'."); |
| } |
| |
| LOG.info("Starting metrics reporters..."); |
| List<Map<String, Object>> reporterList = (List<Map<String, Object>>) stormConfig.get(Config.STORM_METRICS_REPORTERS); |
| if (reporterList != null && reporterList.size() > 0) { |
| for (Map<String, Object> reporterConfig : reporterList) { |
| // only start those requested |
| List<String> daemons = (List<String>) reporterConfig.get("daemons"); |
| for (String daemon : daemons) { |
| if (DaemonType.valueOf(daemon.toUpperCase()) == type) { |
| startReporter(stormConfig, reporterConfig); |
| } |
| } |
| } |
| } |
| } |
| |
| private void startReporter(Map<String, Object> stormConfig, Map<String, Object> reporterConfig) { |
| String clazz = (String) reporterConfig.get("class"); |
| LOG.info("Attempting to instantiate reporter class: {}", clazz); |
| StormReporter reporter = ReflectionUtils.newInstance(clazz); |
| if (reporter != null) { |
| reporter.prepare(registry, stormConfig, reporterConfig); |
| reporter.start(); |
| reporters.add(reporter); |
| } |
| |
| } |
| |
| public void stop() { |
| for (StormReporter sr : reporters) { |
| sr.stop(); |
| } |
| } |
| |
| private String metricName(String name, String stormId, String componentId, String streamId, Integer taskId, Integer workerPort) { |
| StringBuilder sb = new StringBuilder("storm.worker."); |
| sb.append(stormId); |
| sb.append("."); |
| sb.append(hostName); |
| sb.append("."); |
| sb.append(dotToUnderScore(componentId)); |
| sb.append("."); |
| sb.append(dotToUnderScore(streamId)); |
| sb.append("."); |
| sb.append(taskId); |
| sb.append("."); |
| sb.append(workerPort); |
| sb.append("-"); |
| sb.append(name); |
| return sb.toString(); |
| } |
| |
| private String metricName(String name, String stormId, String componentId, Integer taskId, Integer workerPort) { |
| StringBuilder sb = new StringBuilder("storm.worker."); |
| sb.append(stormId); |
| sb.append("."); |
| sb.append(hostName); |
| sb.append("."); |
| sb.append(dotToUnderScore(componentId)); |
| sb.append("."); |
| sb.append(taskId); |
| sb.append("."); |
| sb.append(workerPort); |
| sb.append("-"); |
| sb.append(name); |
| return sb.toString(); |
| } |
| |
| public String metricName(String name, TopologyContext context) { |
| StringBuilder sb = new StringBuilder("storm.topology."); |
| sb.append(context.getStormId()); |
| sb.append("."); |
| sb.append(hostName); |
| sb.append("."); |
| sb.append(dotToUnderScore(context.getThisComponentId())); |
| sb.append("."); |
| sb.append(context.getThisTaskId()); |
| sb.append("."); |
| sb.append(context.getThisWorkerPort()); |
| sb.append("-"); |
| sb.append(name); |
| return sb.toString(); |
| } |
| |
| private String dotToUnderScore(String str) { |
| return str.replace('.', '_'); |
| } |
| } |