/*
* 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.xts;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.DESCRIBE;
import java.util.EnumSet;
import java.util.List;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import org.jboss.as.controller.Extension;
import org.jboss.as.controller.ExtensionContext;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.operations.common.GenericSubsystemDescribeHandler;
import org.jboss.as.controller.parsing.ExtensionParsingContext;
import org.jboss.as.controller.parsing.ParseUtils;
import org.jboss.as.controller.persistence.SubsystemMarshallingContext;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.OperationEntry;
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;
/**
* The web services transactions extension.
*
* @author <a href="mailto:adinn@redhat.com">Andrew Dinn</a>
*/
public class XTSExtension implements Extension {
public static final String SUBSYSTEM_NAME = "xts";
private static final XTSSubsystemParser parser = new XTSSubsystemParser();
public void initialize(ExtensionContext context) {
XtsAsLogger.ROOT_LOGGER.debug("Initializing XTS Extension");
final SubsystemRegistration subsystem = context.registerSubsystem(SUBSYSTEM_NAME, 1, 0);
final ManagementResourceRegistration registration = subsystem.registerSubsystemModel(XTSSubsystemProviders.SUBSYSTEM);
registration.registerOperationHandler(ModelDescriptionConstants.ADD, XTSSubsystemAdd.INSTANCE, XTSSubsystemProviders.SUBSYSTEM_ADD, false);
registration.registerOperationHandler(ModelDescriptionConstants.REMOVE, XTSSubsystemRemove.INSTANCE, XTSSubsystemProviders.SUBSYSTEM_REMOVE, false);
registration.registerOperationHandler(DESCRIBE, GenericSubsystemDescribeHandler.INSTANCE, GenericSubsystemDescribeHandler.INSTANCE, false, OperationEntry.EntryType.PRIVATE);
subsystem.registerXMLElementWriter(parser);
}
public void initializeParsers(ExtensionParsingContext context) {
context.setSubsystemXmlMapping(SUBSYSTEM_NAME, Namespace.CURRENT.getUriString(), parser);
}
private static ModelNode createEmptyAddOperation() {
final ModelNode subsystem = new ModelNode();
subsystem.get(ModelDescriptionConstants.OP).set(ModelDescriptionConstants.ADD);
subsystem.get(ModelDescriptionConstants.OP_ADDR).add(ModelDescriptionConstants.SUBSYSTEM, SUBSYSTEM_NAME);
return subsystem;
}
static class XTSSubsystemParser implements XMLStreamConstants, XMLElementReader<List<ModelNode>>, XMLElementWriter<SubsystemMarshallingContext> {
/** {@inheritDoc} */
@Override
public void readElement(XMLExtendedStreamReader reader, List<ModelNode> list) throws XMLStreamException {
// no attributes
if (reader.getAttributeCount() > 0) {
throw ParseUtils.unexpectedAttribute(reader, 0);
}
final ModelNode subsystem = createEmptyAddOperation();
list.add(subsystem);
// elements
final EnumSet<Element> encountered = EnumSet.noneOf(Element.class);
while (reader.hasNext() && reader.nextTag() != END_ELEMENT) {
switch (Namespace.forUri(reader.getNamespaceURI())) {
case XTS_1_0: {
final Element element = Element.forName(reader.getLocalName());
if (! encountered.add(element)) {
throw ParseUtils.unexpectedElement(reader);
}
switch (element) {
case XTS_ENVIRONMENT: {
final ModelNode model = parseXTSEnvironmentElement(reader);
subsystem.get(CommonAttributes.XTS_ENVIRONMENT).set(model) ;
break;
}
default: {
throw ParseUtils.unexpectedElement(reader);
}
}
break;
}
default: {
throw ParseUtils.unexpectedElement(reader);
}
}
}
}
/**
* Handle the xts-environment element
* @param reader
* @return ModelNode for the core-environment
* @throws XMLStreamException
*/
static ModelNode parseXTSEnvironmentElement(XMLExtendedStreamReader reader) throws XMLStreamException {
final ModelNode store = new ModelNode();
final int count = reader.getAttributeCount();
for (int i = 0; i < count; i ++) {
ParseUtils.requireNoNamespaceAttribute(reader, i);
final String value = reader.getAttributeValue(i);
final Attribute attribute = Attribute.forName(reader.getAttributeLocalName(i));
switch (attribute) {
case URL:
store.get(ModelDescriptionConstants.URL).set(value);
break;
default:
throw ParseUtils.unexpectedAttribute(reader, i);
}
}
// Handle elements
ParseUtils.requireNoContent(reader);
return store;
}
/** {@inheritDoc} */
@Override
public void writeContent(XMLExtendedStreamWriter writer, SubsystemMarshallingContext context) throws XMLStreamException {
context.startSubsystemElement(Namespace.CURRENT.getUriString(), false);
ModelNode node = context.getModelNode();
if (has(node, CommonAttributes.XTS_ENVIRONMENT)) {
writer.writeStartElement(Element.XTS_ENVIRONMENT.getLocalName());
final ModelNode xtsEnv = node.get(CommonAttributes.XTS_ENVIRONMENT);
if (has(xtsEnv, ModelDescriptionConstants.URL)) {
writeAttribute(writer, Attribute.URL, xtsEnv.get(ModelDescriptionConstants.URL));
}
writer.writeEndElement();
}
writer.writeEndElement();
}
private boolean has(ModelNode node, String name) {
return node.has(name) && node.get(name).isDefined();
}
private void writeAttribute(final XMLExtendedStreamWriter writer, final Attribute attr, final ModelNode value) throws XMLStreamException {
writer.writeAttribute(attr.getLocalName(), value.asString());
}
}
}