| /** |
| * 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.testing; |
| |
| import java.io.OutputStream; |
| import java.net.Socket; |
| import java.util.Collection; |
| import java.util.Map; |
| import org.apache.storm.metric.api.IMetricsConsumer; |
| import org.apache.storm.task.IErrorReporter; |
| import org.apache.storm.task.TopologyContext; |
| |
| /* |
| * Listens for all metrics, dumps them as text to a configured host:port |
| * |
| * To use, add this to your topology's configuration: |
| * |
| * ```java |
| * conf.registerMetricsConsumer(org.apache.storm.testing.ForwardingMetricsConsumer.class, "<HOST>:<PORT>", 1); |
| * ``` |
| * |
| * Or edit the storm.yaml config file: |
| * |
| * ```yaml |
| * topology.metrics.consumer.register: |
| * - class: "org.apache.storm.testing.ForwardingMetricsConsumer" |
| * - argument: "example.com:9999" |
| * parallelism.hint: 1 |
| * ``` |
| * |
| */ |
| public class ForwardingMetricsConsumer implements IMetricsConsumer { |
| String host; |
| int port; |
| Socket socket; |
| OutputStream out; |
| |
| @Override |
| public void prepare(Map<String, Object> topoConf, Object registrationArgument, TopologyContext context, IErrorReporter errorReporter) { |
| String[] parts = ((String) registrationArgument).split(":", 2); |
| host = parts[0]; |
| port = Integer.valueOf(parts[1]); |
| try { |
| socket = new Socket(host, port); |
| out = socket.getOutputStream(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public void handleDataPoints(TaskInfo taskInfo, Collection<DataPoint> dataPoints) { |
| StringBuilder sb = new StringBuilder(); |
| String header = taskInfo.timestamp + "\t" |
| + taskInfo.srcWorkerHost + ":" |
| + taskInfo.srcWorkerPort + "\t" |
| + taskInfo.srcTaskId + "\t" |
| + taskInfo.srcComponentId + "\t"; |
| sb.append(header); |
| for (DataPoint p : dataPoints) { |
| sb.delete(header.length(), sb.length()); |
| sb.append(p.name) |
| .append("\t") |
| .append(p.value) |
| .append("\n"); |
| try { |
| out.write(sb.toString().getBytes()); |
| out.flush(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| @Override |
| public void cleanup() { |
| try { |
| socket.close(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |