The reason of incompatibility Snowdrop subsystem with JBoss AS 7.2.0.Alpha1-SNAPSHOT is the fact ExtensionContext registerSubsystem methods have changed.
Changes needed to make Snowdrop subsystem can be registered in JBoss AS 7.1.3 onwards are as follows:
1. In snowdrop-parent.pom change
<version.org.jboss.as7>7.1.3.Final</version.org.jboss.as7>
2. amend org.jboss.spring.deployers.as7.SpringExtension class
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package org.jboss.spring.deployers.as7;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.ADD;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.DESCRIBE;
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.List;
import java.util.Locale;
import javax.xml.stream.XMLStreamException;
import org.jboss.as.controller.Extension;
import org.jboss.as.controller.ExtensionContext;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.descriptions.DescriptionProvider;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.descriptions.common.CommonDescriptions;
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.logging.Logger;
import org.jboss.staxmapper.XMLElementReader;
import org.jboss.staxmapper.XMLElementWriter;
import org.jboss.staxmapper.XMLExtendedStreamReader;
import org.jboss.staxmapper.XMLExtendedStreamWriter;
/**
* @author Marius Bogoevici
*/
public class SpringExtension implements Extension {
private static final Logger log = Logger.getLogger("org.jboss.snowdrop");
public static final String SUBSYSTEM_NAME = "spring";
public static final String NAMESPACE = "urn:jboss:domain:snowdrop:1.0";
private static final int MANAGEMENT_API_MAJOR_VERSION = 1;
private static final int MANAGEMENT_API_MINOR_VERSION = 2;
private static final int MANAGEMENT_API_MICRO_VERSION = 0;
private static SpringSubsystemElementParser parser = new SpringSubsystemElementParser();
private static final DescriptionProvider SUBSYSTEM_ADD_DESCRIPTION = new DescriptionProvider() {
@Override
public ModelNode getModelDescription(Locale locale) {
return SpringDescriptionProviders.getSubsystemAddDescription(locale);
}
};
static final DescriptionProvider SUBSYSTEM_DESCRIPTION = new DescriptionProvider() {
@Override
public ModelNode getModelDescription(Locale locale) {
return SpringDescriptionProviders.getSubsystemDescription(locale);
}
};
private static ModelNode createAddSubSystemOperation() {
final ModelNode subsystem = new ModelNode();
subsystem.get(OP).set(ADD);
subsystem.get(OP_ADDR).add(ModelDescriptionConstants.SUBSYSTEM, SUBSYSTEM_NAME);
return subsystem;
}
public void initialize(ExtensionContext context) {
log.debug("Activating Spring Extension");
final SubsystemRegistration subsystem = context.registerSubsystem(SUBSYSTEM_NAME,MANAGEMENT_API_MAJOR_VERSION,MANAGEMENT_API_MINOR_VERSION,MANAGEMENT_API_MICRO_VERSION);
final ManagementResourceRegistration registration = subsystem.registerSubsystemModel(SUBSYSTEM_DESCRIPTION);
registration.registerOperationHandler(ADD, SpringSubsystemAdd.INSTANCE, SUBSYSTEM_ADD_DESCRIPTION, false);
registration.registerOperationHandler(DESCRIBE, SpringSubsystemDescribeHandler.INSTANCE, SpringSubsystemDescribeHandler.INSTANCE, false, OperationEntry.EntryType.PRIVATE);
subsystem.registerXMLElementWriter(parser);
}
public void initializeParsers(ExtensionParsingContext context) {
log.debug("Setting up parsers");
context.setSubsystemXmlMapping(NAMESPACE, parser);
}
static class SpringSubsystemElementParser implements XMLElementReader<List<ModelNode>>,
XMLElementWriter<SubsystemMarshallingContext> {
/**
* {@inheritDoc}
*/
@Override
public void readElement(XMLExtendedStreamReader reader, List<ModelNode> list) throws XMLStreamException {
ParseUtils.requireNoAttributes(reader);
ParseUtils.requireNoContent(reader);
final ModelNode update = new ModelNode();
update.get(OP).set(ADD);
update.get(OP_ADDR).add(SUBSYSTEM, SUBSYSTEM_NAME);
list.add(createAddSubSystemOperation());
}
private static ModelNode createAddSubSystemOperation() {
final ModelNode subsystem = new ModelNode();
subsystem.get(OP).set(ADD);
subsystem.get(OP_ADDR).add(ModelDescriptionConstants.SUBSYSTEM, SUBSYSTEM_NAME);
return subsystem;
}
/**
* {@inheritDoc}
*/
@Override
public void writeContent(final XMLExtendedStreamWriter writer, final SubsystemMarshallingContext context) throws
XMLStreamException {
//TODO seems to be a problem with empty elements cleaning up the queue in FormattingXMLStreamWriter.runAttrQueue
context.startSubsystemElement(NAMESPACE, false);
writer.writeEndElement();
}
}
private static class SpringSubsystemDescribeHandler implements OperationStepHandler, DescriptionProvider {
static final SpringSubsystemDescribeHandler INSTANCE = new SpringSubsystemDescribeHandler();
@Override
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
context.getResult().add(createAddSubSystemOperation());
context.completeStep();
}
@Override
public ModelNode getModelDescription(Locale locale) {
return CommonDescriptions.getSubsystemDescribeOperation(locale);
}
}
}