| /** |
| * 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.callback.impl; |
| |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import backtype.storm.Config; |
| |
| import com.alibaba.jstorm.callback.BaseCallback; |
| import com.alibaba.jstorm.cluster.StormConfig; |
| import com.alibaba.jstorm.cluster.StormStatus; |
| import com.alibaba.jstorm.daemon.nimbus.NimbusData; |
| import com.alibaba.jstorm.daemon.nimbus.StatusType; |
| import com.alibaba.jstorm.schedule.DelayEventRunnable; |
| import com.alibaba.jstorm.utils.JStormUtils; |
| |
| /** |
| * |
| * |
| * The action when nimbus receive kill command 1. set the topology status as target 2. wait 2 * Timeout seconds later, do removing topology from ZK |
| * |
| * @author Longda |
| */ |
| public class DelayStatusTransitionCallback extends BaseCallback { |
| |
| private static Logger LOG = LoggerFactory.getLogger(DelayStatusTransitionCallback.class); |
| |
| public static final int DEFAULT_DELAY_SECONDS = 30; |
| |
| protected NimbusData data; |
| protected String topologyid; |
| protected StormStatus oldStatus; |
| protected StatusType newType; |
| protected StatusType nextAction; |
| |
| public DelayStatusTransitionCallback(NimbusData data, String topologyid, StormStatus oldStatus, StatusType newType, StatusType nextAction) { |
| this.data = data; |
| this.topologyid = topologyid; |
| this.oldStatus = oldStatus; |
| this.newType = newType; |
| this.nextAction = nextAction; |
| } |
| |
| public int getDelaySeconds(Object[] args) { |
| if (oldStatus != null && oldStatus.getDelaySecs() > 0) { |
| return oldStatus.getDelaySecs(); |
| } |
| |
| Integer delaySecs = DelayStatusTransitionCallback.DEFAULT_DELAY_SECONDS; |
| if (args == null || args.length == 0 || args[0] == null) { |
| Map<?, ?> map = null; |
| try { |
| |
| map = StormConfig.read_nimbus_topology_conf(data.getConf(), topologyid); |
| delaySecs = JStormUtils.parseInt(map.get(Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS), DEFAULT_DELAY_SECONDS); |
| } catch (Exception e) { |
| LOG.info("Failed to get topology configuration " + topologyid); |
| } |
| |
| } else { |
| delaySecs = JStormUtils.parseInt(args[0]); |
| } |
| |
| if (delaySecs == null || delaySecs < 0) { |
| delaySecs = DelayStatusTransitionCallback.DEFAULT_DELAY_SECONDS; |
| } |
| |
| return delaySecs; |
| } |
| |
| @Override |
| public <T> Object execute(T... args) { |
| int delaySecs = getDelaySeconds(args); |
| LOG.info("Delaying event " + newType + " for " + delaySecs + " secs for " + topologyid); |
| |
| data.getScheduExec().schedule(new DelayEventRunnable(data, topologyid, nextAction, args), delaySecs, TimeUnit.SECONDS); |
| |
| return new StormStatus(delaySecs, newType); |
| } |
| |
| } |