/*
 * 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.jmx;

import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.ADD;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.SUBSYSTEM;

import java.util.Collections;
import java.util.List;

import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;

import org.jboss.as.controller.NewExtension;
import org.jboss.as.controller.NewExtensionContext;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.parsing.ExtensionParsingContext;
import org.jboss.as.controller.persistence.SubsystemMarshallingContext;
import org.jboss.as.controller.registry.ModelNodeRegistration;
import org.jboss.as.model.ParseUtils;
import org.jboss.dmr.ModelNode;
import org.jboss.staxmapper.XMLElementReader;
import org.jboss.staxmapper.XMLElementWriter;
import org.jboss.staxmapper.XMLExtendedStreamReader;
import org.jboss.staxmapper.XMLExtendedStreamWriter;

/**
 * Domain extension used to initialize the JMX subsystem.
 *
 * @author Emanuel Muckenhuber
 */
public class NewJMXExtension implements NewExtension {

    public static final String SUBSYSTEM_NAME = "jmx";

    static final JMXSubsystemParser parsers = new JMXSubsystemParser();

    /** {@inheritDoc} */
    @Override
    public void initialize(NewExtensionContext context) {
        final SubsystemRegistration subsystem = context.registerSubsystem(SUBSYSTEM_NAME);
        final ModelNodeRegistration registration = subsystem.registerSubsystemModel(NewJMXSubsystemProviders.SUBSYSTEM);
        // Subsystem operation handlers
        registration.registerOperationHandler(ADD, NewJMXSubsystemAdd.INSTANCE, NewJMXSubsystemProviders.SUBSYTEM_ADD, false);
        registration.registerOperationHandler("add-connector", NewJMXConnectorAdd.INSTANCE, NewJMXSubsystemProviders.JMX_CONNECTOR_ADD, false);
        registration.registerOperationHandler("remove-connector", NewJMXConnectorRemove.INSTANCE, NewJMXSubsystemProviders.JMX_CONNECTOR_REMOVE, false);

        subsystem.registerXMLElementWriter(parsers);
    }

    /** {@inheritDoc} */
    @Override
    public void initializeParsers(ExtensionParsingContext context) {
        context.setSubsystemXmlMapping(Namespace.CURRENT.getUriString(), parsers);
    }

    static class JMXSubsystemParser implements XMLStreamConstants, XMLElementReader<List<ModelNode>>, XMLElementWriter<SubsystemMarshallingContext> {

        /** {@inheritDoc} */
        @Override
        public void readElement(XMLExtendedStreamReader reader, List<ModelNode> list) throws XMLStreamException {

            final ModelNode subsystem = new ModelNode();
            subsystem.get(OP).set(ADD);
            subsystem.get(OP_ADDR).add(SUBSYSTEM, SUBSYSTEM_NAME);
            list.add(subsystem);

            while(reader.hasNext() && reader.nextTag() != END_ELEMENT) {
                final Element element = Element.forName(reader.getLocalName());
                switch(element){
                    case JMX_CONNECTOR: {
                        parseConnector(reader, list);
                        break;
                    } default: {
                        throw ParseUtils.unexpectedElement(reader);
                    }
                }
            }
        }

        void parseConnector(XMLExtendedStreamReader reader, List<ModelNode> list) throws XMLStreamException {
            String serverBinding = null;
            String registryBinding = null;
            int count = reader.getAttributeCount();
            for (int i = 0; i < count; i++) {
                final String value = reader.getAttributeValue(i);
                final Attribute attribute = Attribute.forName(reader.getAttributeLocalName(i));
                switch (attribute) {
                    case SERVER_BINDING: {
                        serverBinding = value;
                        break;
                    } case REGISTRY_BINDING: {
                        registryBinding = value;
                        break;
                    } default: {
                        throw ParseUtils.unexpectedAttribute(reader, i);
                    }
                }
            }
            // Require no content
            ParseUtils.requireNoContent(reader);
            if(serverBinding == null) {
                throw ParseUtils.missingRequired(reader, Collections.singleton(Attribute.SERVER_BINDING));
            }
            if(registryBinding == null) {
                throw ParseUtils.missingRequired(reader, Collections.singleton(Attribute.REGISTRY_BINDING));
            }
            final ModelNode connector = new ModelNode();
            connector.get(OP).set("add-connector");
            connector.get(OP_ADDR).add(SUBSYSTEM, SUBSYSTEM_NAME);
            connector.get(CommonAttributes.SERVER_BINDING).set(serverBinding);
            connector.get(CommonAttributes.REGISTRY_BINDING).set(registryBinding);
            list.add(connector);
        }

        /** {@inheritDoc} */
        @Override
        public void writeContent(XMLExtendedStreamWriter writer, SubsystemMarshallingContext context) throws XMLStreamException {

            ModelNode node = context.getModelNode();
            if(node.has(CommonAttributes.JMX_CONNECTOR)) {
                context.startSubsystemElement(Namespace.CURRENT.getUriString(), false);
                writer.writeStartElement(Element.JMX_CONNECTOR.getLocalName());
                writer.writeAttribute(Attribute.SERVER_BINDING.getLocalName(), node.get(CommonAttributes.SERVER_BINDING).asString());
                writer.writeAttribute(Attribute.REGISTRY_BINDING.getLocalName(), node.get(CommonAttributes.REGISTRY_BINDING).asString());
                writer.writeEndElement();
                writer.writeEndElement();
            }
            else {
                //TODO seems to be a problem with empty elements cleaning up the queue in FormattingXMLStreamWriter.runAttrQueue
                //context.startSubsystemElement(NewNamingExtension.NAMESPACE, true);
                context.startSubsystemElement(Namespace.CURRENT.getUriString(), false);
                writer.writeEndElement();

            }
        }
    }

}

@@ -6413,29 +6413,30 @@
 ributes.
-JMX_CONNECTOR
+SERVER_BINDING
 )) %7B%0A   

Fix JMX subsystem marshalling