/*
 * 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.nifi.event.transport.netty;

import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;

/**
 * Idle State Handler closes channel context when state indicates idle communications
 */
public class CloseContextIdleStateHandler extends ChannelDuplexHandler {

    @Override
    public void userEventTriggered(final ChannelHandlerContext context, final Object event) {
        if (event instanceof IdleStateEvent) {
            final IdleStateEvent idleStateEvent = (IdleStateEvent) event;
            if (idleStateEvent.state() == IdleState.ALL_IDLE) {
                context.close();
            }
        }
    }
}
