/*
 * Copyright 2012 LinkedIn Corp.
 * 
 * Licensed 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 azkaban.execapp.event;

public class Event {
	public enum Type {
		FLOW_STARTED,
		FLOW_FINISHED,
		JOB_STARTED,
		JOB_FINISHED,
		JOB_STATUS_CHANGED,
		EXTERNAL_FLOW_UPDATED,
		EXTERNAL_JOB_UPDATED
	}
	
	private final Object runner;
	private final Type type;
	private final Object eventData;
	private final long time;
	private final boolean shouldUpdate;
	
	private Event(Object runner, Type type, Object eventData, boolean shouldUpdate) {
		this.runner = runner;
		this.type = type;
		this.eventData = eventData;
		this.time = System.currentTimeMillis();
		this.shouldUpdate = shouldUpdate;
	}
	
	public Object getRunner() {
		return runner;
	}
	
	public Type getType() {
		return type;
	}
	
	public long getTime() {
		return time;
	}
	
	public Object getData() {
		return eventData;
	}
	
	public static Event create(Object runner, Type type) {
		return new Event(runner, type, null, true);
	}
	
	public static Event create(Object runner, Type type, Object eventData) {
		return new Event(runner, type, eventData, true);
	}
	
	public static Event create(Object runner, Type type, Object eventData, boolean shouldUpdate) {
		return new Event(runner, type, eventData, shouldUpdate);
	}

	public boolean isShouldUpdate() {
		return shouldUpdate;
	}
}
