| /** |
| * 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.command; |
| |
| import com.google.common.base.Joiner; |
| import org.apache.storm.cluster.ClusterStateContext; |
| import org.apache.storm.cluster.ClusterUtils; |
| import org.apache.storm.cluster.IStateStorage; |
| import org.apache.storm.generated.ClusterWorkerHeartbeat; |
| import org.apache.storm.stats.StatsUtil; |
| import org.apache.storm.utils.ConfigUtils; |
| import org.apache.storm.utils.Utils; |
| import org.json.simple.JSONValue; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Map; |
| |
| public class Heartbeats { |
| private static final Logger LOG = LoggerFactory.getLogger(Heartbeats.class); |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length < 2) { |
| throw new IllegalArgumentException("Command and path arguments must be provided."); |
| } |
| |
| String command = args[0]; |
| String path = args[1]; |
| |
| Map<String, Object> conf = ConfigUtils.readStormConfig(); |
| IStateStorage cluster = ClusterUtils.mkStateStorage(conf, conf, null, new ClusterStateContext()); |
| |
| LOG.info("Command: [{}]", command); |
| |
| switch (command) { |
| case "list": |
| handleListCommand(cluster, path); |
| break; |
| |
| case "get": |
| handleGetCommand(cluster, path); |
| break; |
| |
| default: |
| LOG.info("Usage: heartbeats [list|get] path"); |
| } |
| |
| try { |
| cluster.close(); |
| } catch (Exception e) { |
| LOG.info("Caught exception: {} on close.", e); |
| } |
| |
| // force process to be terminated |
| System.exit(0); |
| } |
| |
| private static void handleListCommand(IStateStorage cluster, String path) { |
| String message = Joiner.on("\n").join(cluster.get_worker_hb_children(path, false)); |
| LOG.info("list {}:\n{}\n", path, message); |
| } |
| |
| private static void handleGetCommand(IStateStorage cluster, String path) { |
| String message; |
| byte[] hb = cluster.get_worker_hb(path, false); |
| if (hb != null) { |
| Map<String, Object> heartbeatMap = StatsUtil.convertZkWorkerHb(Utils.deserialize(hb, ClusterWorkerHeartbeat.class)); |
| message = JSONValue.toJSONString(heartbeatMap); |
| } else { |
| message = "No Heartbeats found"; |
| } |
| LOG.info(message); |
| } |
| } |