com.eucalyptus.cluster.proxy.ws.ProxyClusterClientChannelInitializer.java Source code

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/*************************************************************************
 * Copyright 2009-2012 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
 * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
 * additional information or have any questions.
 *
 * This file may incorporate work covered under the following copyright
 * and permission notice:
 *
 *   Software License Agreement (BSD License)
 *
 *   Copyright (c) 2008, Regents of the University of California
 *   All rights reserved.
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 *   Redistribution and use of this software in source and binary forms,
 *   with or without modification, are permitted provided that the
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 *     Redistributions in binary form must reproduce the above copyright
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 *     in the documentation and/or other materials provided with the
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 *   IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
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 *   WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
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 ************************************************************************/

package com.eucalyptus.cluster.proxy.ws;

import java.util.concurrent.TimeUnit;
import com.eucalyptus.cluster.proxy.ProxyClusterController;
import com.eucalyptus.cluster.proxy.ProxyClusterConfigurations;
import com.eucalyptus.component.annotation.ComponentPart;
import com.eucalyptus.util.async.AsyncRequestPoolable;
import com.eucalyptus.ws.IoHandlers;
import com.eucalyptus.ws.client.MonitoredSocketChannelInitializer;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;

@ComponentPart(ProxyClusterController.class)
public final class ProxyClusterClientChannelInitializer extends MonitoredSocketChannelInitializer
        implements AsyncRequestPoolable {

    private static final Supplier<ChannelHandler> wsSecHandler = Suppliers.memoize(ProxyClusterWsSecHandler::new);
    private static final Supplier<Integer> poolSize = Suppliers
            .memoizeWithExpiration(ProxyClusterClientChannelInitializer::getRequestWorkers, 30, TimeUnit.SECONDS);

    @Override
    protected void initChannel(final SocketChannel socketChannel) throws Exception {
        super.initChannel(socketChannel);
        final ChannelPipeline pipeline = socketChannel.pipeline();
        pipeline.addLast("decoder", IoHandlers.httpResponseDecoder());
        pipeline.addLast("aggregator", IoHandlers.newHttpChunkAggregator());
        pipeline.addLast("encoder", IoHandlers.httpRequestEncoder());
        pipeline.addLast("wrapper", IoHandlers.ioMessageWrappingHandler());
        pipeline.addLast("serializer", IoHandlers.soapMarshalling());
        pipeline.addLast("wssec", wsSecHandler.get());
        pipeline.addLast("addressing", IoHandlers.addressingHandler("EucalyptusCC#"));
        pipeline.addLast("soap", IoHandlers.soapHandler());
        pipeline.addLast("binding", IoHandlers.bindingHandler("eucalyptus_ucsb_edu"));
    }

    @Override
    public int fixedSize() {
        return poolSize.get();
    }

    private static int getRequestWorkers() {
        try {
            return ProxyClusterConfigurations.getConfiguration().getRequestWorkers();
        } catch (Exception e) {
            return -1;
        }
    }
}