Package org.jboss.as.clustering.jgroups.subsystem

Source Code of org.jboss.as.clustering.jgroups.subsystem.JGroupsSubsystemAddHandler

/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.clustering.jgroups.subsystem;

import static org.jboss.as.clustering.jgroups.logging.JGroupsLogger.ROOT_LOGGER;
import static org.jboss.msc.service.ServiceController.Mode.ON_DEMAND;

import java.util.Iterator;
import java.util.ServiceLoader;

import org.jboss.as.clustering.dmr.ModelNodes;
import org.jboss.as.clustering.jgroups.ChannelFactory;
import org.jboss.as.clustering.msc.InjectedValueServiceBuilder;
import org.jboss.as.controller.AbstractAddStepHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.dmr.ModelNode;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jgroups.Channel;
import org.wildfly.clustering.spi.ClusteredGroupServiceInstaller;
import org.wildfly.clustering.spi.GroupServiceInstaller;

/**
* Handler for JGroups subsystem add operations.
*
* @author Paul Ferraro
* @author Richard Achmatowicz (c) 2011 Red Hat, Inc
*/
public class JGroupsSubsystemAddHandler extends AbstractAddStepHandler {

    JGroupsSubsystemAddHandler(AttributeDefinition... attributes) {
        super(attributes);
    }

    @Override
    protected void performRuntime(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {

        ROOT_LOGGER.activatingSubsystem();

        installRuntimeServices(context, operation, model);
    }

    static void installRuntimeServices(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {
        ServiceTarget target = context.getServiceTarget();

        ProtocolDefaultsService.build(target).setInitialMode(ON_DEMAND).install();

        InjectedValueServiceBuilder builder = new InjectedValueServiceBuilder(target);

        String defaultChannel = ModelNodes.asString(JGroupsSubsystemResourceDefinition.DEFAULT_CHANNEL.resolveModelAttribute(context, model));
        if ((defaultChannel != null) && !defaultChannel.equals(ChannelService.DEFAULT)) {
            builder.build(ChannelService.getServiceName(ChannelService.DEFAULT), ChannelService.getServiceName(defaultChannel), Channel.class).install();
            builder.build(ConnectedChannelService.getServiceName(ChannelService.DEFAULT), ConnectedChannelService.getServiceName(defaultChannel), Channel.class).install();
            builder.build(ChannelService.getFactoryServiceName(ChannelService.DEFAULT), ChannelService.getFactoryServiceName(defaultChannel), ChannelFactory.class).install();

            for (GroupServiceInstaller installer : ServiceLoader.load(ClusteredGroupServiceInstaller.class, ClusteredGroupServiceInstaller.class.getClassLoader())) {
                Iterator<ServiceName> names = installer.getServiceNames(defaultChannel).iterator();
                for (ServiceName name : installer.getServiceNames(ChannelService.DEFAULT)) {
                    builder.build(name, names.next(), Object.class).install();
                }
            }
        }

        String defaultStack = ModelNodes.asString(JGroupsSubsystemResourceDefinition.DEFAULT_STACK.resolveModelAttribute(context, model));
        if ((defaultStack != null) && !defaultStack.equals(ChannelFactoryService.DEFAULT)) {
            builder.build(ChannelFactoryService.getServiceName(ChannelFactoryService.DEFAULT), ChannelFactoryService.getServiceName(defaultStack), ChannelFactory.class).install();
        }
    }

    static void removeRuntimeServices(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {
        // remove the ProtocolDefaultsService
        context.removeService(ProtocolDefaultsService.SERVICE_NAME);

        String defaultStack = ModelNodes.asString(JGroupsSubsystemResourceDefinition.DEFAULT_STACK.resolveModelAttribute(context, model));
        if ((defaultStack != null) && !defaultStack.equals(ChannelFactoryService.DEFAULT)) {
            context.removeService(ChannelFactoryService.getServiceName(ChannelFactoryService.DEFAULT));
        }

        String defaultChannel = ModelNodes.asString(JGroupsSubsystemResourceDefinition.DEFAULT_CHANNEL.resolveModelAttribute(context, model));
        if ((defaultChannel != null) && !defaultChannel.equals(ChannelService.DEFAULT)) {
            context.removeService(ChannelService.getServiceName(ChannelService.DEFAULT));
            context.removeService(ConnectedChannelService.getServiceName(ChannelService.DEFAULT));
            context.removeService(ChannelService.getFactoryServiceName(ChannelService.DEFAULT));

            for (GroupServiceInstaller installer : ServiceLoader.load(ClusteredGroupServiceInstaller.class, ClusteredGroupServiceInstaller.class.getClassLoader())) {
                for (ServiceName name : installer.getServiceNames(ChannelService.DEFAULT)) {
                    context.removeService(name);
                }
            }
        }
    }
}
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