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/*
 * Fabric3 Copyright (c) 2009-2013 Metaform Systems
 * 
 * Fabric3 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, either version 3 of the License, or (at your option) any later
 * version, with the following exception:
 * 
 * Linking this software statically or dynamically with other modules is making
 * a combined work based on this software. Thus, the terms and conditions of the
 * GNU General Public License cover the whole combination.
 * 
 * As a special exception, the copyright holders of this software give you
 * permission to link this software with independent modules to produce an
 * executable, regardless of the license terms of these independent modules, and
 * to copy and distribute the resulting executable under terms of your choice,
 * provided that you also meet, for each linked independent module, the terms
 * and conditions of the license of that module. An independent module is a
 * module which is not derived from or based on this software. If you modify
 * this software, you may extend this exception to your version of the software,
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 * 
 * Fabric3 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
 * Fabric3. If not, see .
 */
package org.fabric3.binding.zeromq.runtime;

import java.net.URI;

import org.oasisopen.sca.annotation.Reference;

import org.fabric3.binding.zeromq.common.ZeroMQMetadata;
import org.fabric3.binding.zeromq.provision.ZeroMQConnectionSourceDefinition;
import org.fabric3.spi.builder.component.ConnectionAttachException;
import org.fabric3.spi.builder.component.SourceConnectionAttacher;
import org.fabric3.spi.channel.ChannelConnection;
import org.fabric3.spi.classloader.ClassLoaderRegistry;
import org.fabric3.spi.model.physical.PhysicalConnectionTargetDefinition;

/**
 *
 */
public class ZeroMQConnectionSourceAttacher implements SourceConnectionAttacher {
    private ZeroMQPubSubBroker broker;
    private ClassLoaderRegistry registry;

    public ZeroMQConnectionSourceAttacher(@Reference ZeroMQPubSubBroker broker, @Reference ClassLoaderRegistry registry) {
        this.broker = broker;
        this.registry = registry;
    }

    public void attach(ZeroMQConnectionSourceDefinition source, PhysicalConnectionTargetDefinition target, ChannelConnection connection)
            throws ConnectionAttachException {

        ClassLoader loader = registry.getClassLoader(source.getClassLoaderId());
        URI subscriberId = source.getUri();
        try {
            ZeroMQMetadata metadata = source.getMetadata();
            broker.subscribe(subscriberId, metadata, connection, loader);
        } catch (BrokerException e) {
            throw new ConnectionAttachException(e);
        }
    }

    public void detach(ZeroMQConnectionSourceDefinition source, PhysicalConnectionTargetDefinition target) throws ConnectionAttachException {
        ZeroMQMetadata metadata = source.getMetadata();
        URI subscriberId = source.getUri();
        try {
            broker.unsubscribe(subscriberId, metadata);
        } catch (BrokerException e) {
            throw new ConnectionAttachException(e);
        }
    }

}