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/*
 * 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.flume.source;

import org.apache.flume.Source;
import org.apache.flume.SourceRunner;
import org.apache.flume.channel.ChannelProcessor;
import org.apache.flume.lifecycle.LifecycleState;

/**
 * Starts, stops, and manages
 * {@linkplain EventDrivenSource event-driven sources}.
 */
public class EventDrivenSourceRunner extends SourceRunner {

  private LifecycleState lifecycleState;

  public EventDrivenSourceRunner() {
    lifecycleState = LifecycleState.IDLE;
  }

  @Override
  public void start() {
    Source source = getSource();
    ChannelProcessor cp = source.getChannelProcessor();
    cp.initialize();
    source.start();
    lifecycleState = LifecycleState.START;
  }

  @Override
  public void stop() {
    Source source = getSource();
    source.stop();
    ChannelProcessor cp = source.getChannelProcessor();
    cp.close();
    lifecycleState = LifecycleState.STOP;
  }

  @Override
  public String toString() {
    return "EventDrivenSourceRunner: { source:" + getSource() + " }";
  }

  @Override
  public LifecycleState getLifecycleState() {
    return lifecycleState;
  }

}