Package org.jboss.as.txn.subsystem

Source Code of org.jboss.as.txn.subsystem.TransactionExtension

/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, 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.txn.subsystem;

import org.jboss.as.controller.Extension;
import org.jboss.as.controller.ExtensionContext;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.descriptions.StandardResourceDescriptionResolver;
import org.jboss.as.controller.operations.common.GenericSubsystemDescribeHandler;
import org.jboss.as.controller.parsing.ExtensionParsingContext;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.OperationEntry;
import org.jboss.as.txn.TransactionMessages;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceRegistry;

import javax.management.MBeanServer;

import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.DESCRIBE;
import static org.jboss.as.txn.TransactionLogger.ROOT_LOGGER;

/**
* The transaction management extension.
*
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
* @author Emanuel Muckenhuber
* @author Scott Stark (sstark@redhat.com) (C) 2011 Red Hat Inc.
* @author Mike Musgrove (mmusgrov@redhat.com) (C) 2012 Red Hat Inc.
*/
public class TransactionExtension implements Extension {
    public static final String SUBSYSTEM_NAME = "transactions";

    private static final String RESOURCE_NAME = TransactionExtension.class.getPackage().getName() + ".LocalDescriptions";

    private static final ServiceName MBEAN_SERVER_SERVICE_NAME = ServiceName.JBOSS.append("mbean", "server");
    static final PathElement LOG_STORE_PATH = PathElement.pathElement(LogStoreConstants.LOG_STORE, LogStoreConstants.LOG_STORE);
    static final PathElement SUBSYSTEM_PATH = PathElement.pathElement(ModelDescriptionConstants.SUBSYSTEM, TransactionExtension.SUBSYSTEM_NAME);
    static final PathElement PARTECIPANT_PATH = PathElement.pathElement(LogStoreConstants.PARTICIPANTS);
    static final PathElement TRANSACTION_PATH = PathElement.pathElement(LogStoreConstants.TRANSACTIONS);


    static StandardResourceDescriptionResolver getResourceDescriptionResolver(final String... keyPrefix) {
        StringBuilder prefix = new StringBuilder(SUBSYSTEM_NAME);
        for (String kp : keyPrefix) {
            prefix.append('.').append(kp);
        }
        return new StandardResourceDescriptionResolver(prefix.toString(), RESOURCE_NAME, TransactionExtension.class.getClassLoader(), true, false);
    }

    static MBeanServer getMBeanServer(OperationContext context) {
        final ServiceRegistry serviceRegistry = context.getServiceRegistry(false);
        final ServiceController<?> serviceController = serviceRegistry.getService(MBEAN_SERVER_SERVICE_NAME);
        if (serviceController == null) {
            throw TransactionMessages.MESSAGES.jmxSubsystemNotInstalled();
        }
        return (MBeanServer) serviceController.getValue();
    }

    /**
     * {@inheritDoc}
     */
    public void initialize(ExtensionContext context) {
        ROOT_LOGGER.debug("Initializing Transactions Extension");
        final LogStoreResource resource = new LogStoreResource();
        final boolean registerRuntimeOnly = context.isRuntimeOnlyRegistrationValid();
        final SubsystemRegistration subsystem = context.registerSubsystem(SUBSYSTEM_NAME, 1, 1);

        final ManagementResourceRegistration registration = subsystem.registerSubsystemModel(new TransactionSubsystemRootResourceDefinition(registerRuntimeOnly));
        registration.registerOperationHandler(DESCRIBE, GenericSubsystemDescribeHandler.INSTANCE, GenericSubsystemDescribeHandler.INSTANCE, false, OperationEntry.EntryType.PRIVATE);


        ManagementResourceRegistration logStoreChild = registration.registerSubModel(new LogStoreDefinition(resource));
        if (registerRuntimeOnly) {
            ManagementResourceRegistration transactionChild = logStoreChild.registerSubModel(new LogStoreTransactionDefinition(resource));
            ManagementResourceRegistration partecipantChild = transactionChild.registerSubModel(LogStoreTransactionParticipantDefinition.INSTANCE);
        }

        subsystem.registerXMLElementWriter(TransactionSubsystem12Parser.INSTANCE);
    }

    /**
     * {@inheritDoc}
     */
    public void initializeParsers(ExtensionParsingContext context) {
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, Namespace.TRANSACTIONS_1_0.getUriString(), TransactionSubsystem10Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, Namespace.TRANSACTIONS_1_1.getUriString(), TransactionSubsystem11Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, Namespace.TRANSACTIONS_1_2.getUriString(), TransactionSubsystem12Parser.INSTANCE);
    }

}
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