/**
* 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.tez.dag.history.events;
import org.apache.tez.dag.history.HistoryEvent;
import org.apache.tez.dag.history.HistoryEventType;
import org.apache.tez.dag.history.ats.EntityTypes;
import org.apache.tez.dag.history.utils.ATSConstants;
import org.apache.tez.dag.records.TezDAGID;
import org.apache.tez.dag.recovery.records.RecoveryProtos.DAGStartedProto;
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class DAGStartedEvent implements HistoryEvent {
private TezDAGID dagID;
private long startTime;
public DAGStartedEvent() {
}
public DAGStartedEvent(TezDAGID dagID, long startTime) {
this.dagID = dagID;
this.startTime = startTime;
}
@Override
public HistoryEventType getEventType() {
return HistoryEventType.DAG_STARTED;
}
@Override
public JSONObject convertToATSJSON() throws JSONException {
JSONObject jsonObject = new JSONObject();
jsonObject.put(ATSConstants.ENTITY,
dagID.toString());
jsonObject.put(ATSConstants.ENTITY_TYPE,
EntityTypes.TEZ_DAG_ID.name());
// Related Entities not needed as should have been done in
// dag submission event
// TODO decide whether this goes into different events,
// event info or other info.
JSONArray events = new JSONArray();
JSONObject startEvent = new JSONObject();
startEvent.put(ATSConstants.TIMESTAMP, startTime);
startEvent.put(ATSConstants.EVENT_TYPE,
HistoryEventType.DAG_STARTED.name());
events.put(startEvent);
jsonObject.put(ATSConstants.EVENTS, events);
return jsonObject;
}
@Override
public boolean isRecoveryEvent() {
return true;
}
@Override
public boolean isHistoryEvent() {
return true;
}
public DAGStartedProto toProto() {
return DAGStartedProto.newBuilder()
.setDagId(dagID.toString())
.setStartTime(startTime)
.build();
}
public void fromProto(DAGStartedProto proto) {
this.dagID = TezDAGID.fromString(proto.getDagId());
this.startTime = proto.getStartTime();
}
@Override
public void toProtoStream(OutputStream outputStream) throws IOException {
toProto().writeDelimitedTo(outputStream);
}
@Override
public void fromProtoStream(InputStream inputStream) throws IOException {
DAGStartedProto proto = DAGStartedProto.parseDelimitedFrom(inputStream);
fromProto(proto);
}
@Override
public String toString() {
return "dagID=" + dagID
+ ", startTime=" + startTime;
}
public long getStartTime() {
return this.startTime;
}
public TezDAGID getDagID() {
return dagID;
}
}