com.lambdaworks.redis.ChannelGroupListener.java Source code

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Here is the source code for com.lambdaworks.redis.ChannelGroupListener.java

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/*
 * Copyright 2011-2016 the original author or authors.
 *
 * 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 com.lambdaworks.redis;

import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.group.ChannelGroup;

/**
 * A netty {@link ChannelHandler} responsible for monitoring the channel and adding/removing the channel from/to the
 * ChannelGroup.
 * 
 * @author Will Glozer
 */
@ChannelHandler.Sharable
class ChannelGroupListener extends ChannelInboundHandlerAdapter {

    private ChannelGroup channels;

    public ChannelGroupListener(ChannelGroup channels) {
        this.channels = channels;
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        channels.add(ctx.channel());
        super.channelActive(ctx);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        channels.remove(ctx.channel());
        super.channelInactive(ctx);
    }
}