| /** |
| * 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.hadoop.yarn.event; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Public; |
| import org.apache.hadoop.classification.InterfaceStability.Evolving; |
| |
| /** |
| * Parent class of all the events. All events extend this class. |
| */ |
| @Public |
| @Evolving |
| public abstract class AbstractEvent<TYPE extends Enum<TYPE>> |
| implements Event<TYPE> { |
| |
| private final TYPE type; |
| private final long timestamp; |
| |
| // use this if you DON'T care about the timestamp |
| public AbstractEvent(TYPE type) { |
| this.type = type; |
| // We're not generating a real timestamp here. It's too expensive. |
| timestamp = -1L; |
| } |
| |
| // use this if you care about the timestamp |
| public AbstractEvent(TYPE type, long timestamp) { |
| this.type = type; |
| this.timestamp = timestamp; |
| } |
| |
| @Override |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| @Override |
| public TYPE getType() { |
| return type; |
| } |
| |
| @Override |
| public String toString() { |
| return "EventType: " + getType(); |
| } |
| } |