org.rzo.netty.ahessian.stopable.StopHandler.java Source code

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Here is the source code for org.rzo.netty.ahessian.stopable.StopHandler.java

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/*******************************************************************************
 * Copyright  2015 rzorzorzo@users.sf.net
 *
 * 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 org.rzo.netty.ahessian.stopable;

import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelPipeline;
import io.netty.util.concurrent.EventExecutor;

import java.util.Iterator;
import java.util.Map.Entry;

public class StopHandler extends ChannelInboundHandlerAdapter {

    EventExecutor _executor;

    public StopHandler(EventExecutor executor) {
        _executor = executor;
    }

    public StopHandler() {
        _executor = null;
    }

    @Override
    public void channelInactive(final ChannelHandlerContext ctx) throws Exception {
        ChannelPipeline p = ctx.pipeline();
        Iterator<Entry<String, ChannelHandler>> it = p.iterator();
        while (it.hasNext()) {
            Entry<String, ChannelHandler> e = it.next();
            if (e.getValue() instanceof StopableHandler) {
                StopableHandler h = (StopableHandler) e.getValue();
                if (h.isStopEnabled())
                    h.stop();
            }

        }
        if (_executor != null && !_executor.isShuttingDown() && !_executor.isTerminated())
            _executor.shutdownGracefully();
    }

}