/**
* 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 com.alibaba.jstorm.callback.BaseCallback;
import com.alibaba.jstorm.cluster.StormStatus;
import com.alibaba.jstorm.daemon.nimbus.NimbusData;
import com.alibaba.jstorm.daemon.nimbus.TopologyAssign;
import com.alibaba.jstorm.daemon.nimbus.TopologyAssignEvent;
/**
* 1. every Config.NIMBUS_MONITOR_FREQ_SECS will call MonitorRunnable 2. MonitorRunnable will call NimbusData.transition 3. NimbusData.transition will this
* callback
*
*
*/
public class ReassignTransitionCallback extends BaseCallback {
private NimbusData data;
private String topologyid;
private StormStatus oldStatus;
public ReassignTransitionCallback(NimbusData data, String topologyid) {
this.data = data;
this.topologyid = topologyid;
this.oldStatus = null;
}
public ReassignTransitionCallback(NimbusData data, String topologyid, StormStatus oldStatus) {
this.data = data;
this.topologyid = topologyid;
this.oldStatus = oldStatus;
}
@Override
public <T> Object execute(T... args) {
// default is true
TopologyAssignEvent assignEvent = new TopologyAssignEvent();
assignEvent.setTopologyId(topologyid);
assignEvent.setScratch(false);
assignEvent.setOldStatus(oldStatus);
TopologyAssign.push(assignEvent);
assignEvent.waitFinish();
return null;
}
}