text: /*
   * 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.event;
  
  import azkaban.spi.EventType;
  import com.google.common.base.Preconditions;
  
  public class Event {
  
    private final Object runner;
    private final EventType type;
    private final EventData eventData;
    private final long time;
  
    private Event(final Object runner, final EventType type, final EventData eventData) {
      this.runner = runner;
      this.type = type;
      this.eventData = eventData;
      this.time = System.currentTimeMillis();
    }
  
    /**
     * Creates a new event.
     *
     * @param runner runner.
     * @param type type.
     * @param eventData EventData, null is not allowed.
     * @return New Event instance.
     * @throws NullPointerException if EventData is null.
     */
    public static Event create(final Object runner, final EventType type, final EventData eventData)
        throws NullPointerException {
      Preconditions.checkNotNull(eventData, "EventData was null");
      return new Event(runner, type, eventData);
    }
  
    public Object getRunner() {
      return this.runner;
    }
  
    public EventType getType() {
      return this.type;
    }
  
    public long getTime() {
      return this.time;
    }
  
    public EventData getData() {
      return this.eventData;
    }
  
  
  }
  