dubbo-plugin/dubbo-qos/src/main/java/org/apache/dubbo/qos/server/handler/TelnetIdleEventHandler.java

/*
 * 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.dubbo.qos.server.handler;

import io.netty.channel.Channel;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.timeout.IdleStateEvent;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;

public class TelnetIdleEventHandler extends ChannelDuplexHandler {
    private static final Logger log = LoggerFactory.getLogger(TelnetIdleEventHandler.class);

    @Override
    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
        // server will close channel when server don't receive any request from client util timeout.
        if (evt instanceof IdleStateEvent) {
            Channel channel = ctx.channel();
            log.info("IdleStateEvent triggered, close channel " + channel);
            channel.close();
        } else {
            super.userEventTriggered(ctx, evt);
        }
    }

}