| /** |
| * 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 com.alibaba.jstorm.task.heartbeat; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.LinkedBlockingDeque; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import backtype.storm.Config; |
| |
| import com.alibaba.jstorm.callback.RunnableCallback; |
| import com.alibaba.jstorm.cluster.StormClusterState; |
| import com.alibaba.jstorm.daemon.worker.WorkerData; |
| import com.alibaba.jstorm.schedule.Assignment.AssignmentType; |
| import com.alibaba.jstorm.task.Task; |
| import com.alibaba.jstorm.task.UptimeComputer; |
| import com.alibaba.jstorm.utils.JStormUtils; |
| import com.alibaba.jstorm.utils.TimeUtils; |
| |
| /** |
| * Task hearbeat |
| * |
| * @author yannian |
| * |
| */ |
| public class TaskHeartbeatRunable extends RunnableCallback { |
| private static final Logger LOG = LoggerFactory |
| .getLogger(TaskHeartbeatRunable.class); |
| |
| private StormClusterState zkCluster; |
| private String topology_id; |
| private UptimeComputer uptime; |
| private Map storm_conf; |
| private Integer frequence; |
| private Map<Integer, Long> taskAssignTsMap = new HashMap<Integer, Long>(); |
| |
| private static Map<Integer, TaskStats> taskStatsMap = |
| new HashMap<Integer, TaskStats>(); |
| private static LinkedBlockingDeque<Event> eventQueue = |
| new LinkedBlockingDeque<TaskHeartbeatRunable.Event>(); |
| |
| public static void registerTaskStats(int taskId, TaskStats taskStats) { |
| Event event = new Event(Event.REGISTER_TYPE, taskId, taskStats); |
| eventQueue.offer(event); |
| } |
| |
| public static void unregisterTaskStats(int taskId) { |
| Event event = new Event(Event.UNREGISTER_TYPE, taskId, null); |
| eventQueue.offer(event); |
| } |
| |
| public static void updateTaskHbStats(int taskId, Task taskData) { |
| Event event = new Event(Event.TASK_HEARTBEAT_TYPE, taskId, taskData); |
| eventQueue.offer(event); |
| } |
| |
| public TaskHeartbeatRunable(WorkerData workerData) { |
| |
| this.zkCluster = workerData.getZkCluster(); |
| this.topology_id = workerData.getTopologyId(); |
| this.uptime = new UptimeComputer(); |
| this.storm_conf = workerData.getStormConf(); |
| |
| String key = Config.TASK_HEARTBEAT_FREQUENCY_SECS; |
| Object time = storm_conf.get(key); |
| frequence = JStormUtils.parseInt(time, 10); |
| |
| } |
| |
| public void handle() throws InterruptedException { |
| Event event = eventQueue.take(); |
| while (event != null) { |
| switch (event.getType()) { |
| case Event.TASK_HEARTBEAT_TYPE: { |
| updateTaskHbStats(event); |
| break; |
| } |
| case Event.REGISTER_TYPE: { |
| Event<TaskStats> regEvent = event; |
| taskStatsMap.put(event.getTaskId(), regEvent.getEventValue()); |
| taskAssignTsMap.put(event.getTaskId(), |
| System.currentTimeMillis()); |
| break; |
| } |
| case Event.UNREGISTER_TYPE: { |
| taskStatsMap.remove(event.getTaskId()); |
| taskAssignTsMap.remove(event.getTaskId()); |
| break; |
| } |
| default: { |
| LOG.warn("Unknown event type received:" + event.getType()); |
| break; |
| } |
| } |
| |
| event = eventQueue.take(); |
| } |
| } |
| |
| @Override |
| public void run() { |
| try { |
| handle(); |
| } catch (InterruptedException e) { |
| LOG.info(e.getMessage()); |
| } |
| } |
| |
| @Override |
| public Object getResult() { |
| return frequence; |
| } |
| |
| public void updateTaskHbStats(Event event) { |
| Integer currtime = TimeUtils.current_time_secs(); |
| Event<Task> taskHbEvent = event; |
| int taskId = taskHbEvent.getTaskId(); |
| String idStr = " " + topology_id + ":" + taskId + " "; |
| |
| try { |
| |
| TaskHeartbeat hb = new TaskHeartbeat(currtime, uptime.uptime()); |
| zkCluster.task_heartbeat(topology_id, taskId, hb); |
| |
| LOG.info("update task hearbeat ts " + currtime + " for" + idStr); |
| |
| // Check if assignment is changed. e.g scale-out |
| Task task = taskHbEvent.getEventValue(); |
| Long timeStamp = taskAssignTsMap.get(taskId); |
| if (timeStamp != null) { |
| if (timeStamp < task.getWorkerAssignmentTs() && |
| task.getWorkerAssignmentType().equals(AssignmentType.Assign)) { |
| LOG.info("Start to update the task data for task-" + taskId); |
| task.updateTaskData(); |
| taskAssignTsMap.put(taskId, task.getWorkerAssignmentTs()); |
| } |
| } |
| } catch (Exception e) { |
| // TODO Auto-generated catch block |
| String errMsg = "Failed to update heartbeat to ZK " + idStr + "\n"; |
| LOG.error(errMsg, e); |
| } |
| } |
| |
| private static class Event<T> { |
| public static final int REGISTER_TYPE = 0; |
| public static final int UNREGISTER_TYPE = 1; |
| public static final int TASK_HEARTBEAT_TYPE = 2; |
| private final int type; |
| private final int taskId; |
| private final T value; |
| |
| public Event(int type, int taskId, T value) { |
| this.type = type; |
| this.taskId = taskId; |
| this.value = value; |
| } |
| |
| public int getType() { |
| return type; |
| } |
| |
| public int getTaskId() { |
| return taskId; |
| } |
| |
| public T getEventValue() { |
| return value; |
| } |
| |
| } |
| |
| } |