/*
* JBoss, Home of Professional Open Source.
* Copyright 2015, 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.wildfly.extension.clustering.singleton;
import java.util.EnumSet;
import javax.xml.stream.XMLStreamException;
import org.jboss.as.clustering.controller.Attribute;
import org.jboss.as.controller.persistence.SubsystemMarshallingContext;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.Property;
import org.jboss.staxmapper.XMLElementWriter;
import org.jboss.staxmapper.XMLExtendedStreamWriter;
/**
* Marshals singleton deployer subsystem configuration to XML.
* @author Paul Ferraro
*/
public class SingletonXMLWriter implements XMLElementWriter<SubsystemMarshallingContext> {
@Override
public void writeContent(XMLExtendedStreamWriter writer, SubsystemMarshallingContext context) throws XMLStreamException {
context.startSubsystemElement(SingletonSchema.CURRENT.getNamespaceUri(), false);
writeSingletonPolicies(writer, context.getModelNode());
writer.writeEndElement();
}
private static void writeSingletonPolicies(XMLExtendedStreamWriter writer, ModelNode model) throws XMLStreamException {
writer.writeStartElement(XMLElement.SINGLETON_POLICIES.getLocalName());
writeAttributes(writer, model, SingletonResourceDefinition.Attribute.class);
for (Property property : model.get(SingletonPolicyResourceDefinition.WILDCARD_PATH.getKey()).asPropertyList()) {
writeSingletonPolicy(writer, property.getName(), property.getValue());
}
writer.writeEndElement();
}
private static void writeSingletonPolicy(XMLExtendedStreamWriter writer, String name, ModelNode policy) throws XMLStreamException {
writer.writeStartElement(XMLElement.SINGLETON_POLICY.getLocalName());
writer.writeAttribute(XMLAttribute.NAME.getLocalName(), name);
writeAttributes(writer, policy, SingletonPolicyResourceDefinition.Attribute.class);
if (policy.hasDefined(ElectionPolicyResourceDefinition.WILDCARD_PATH.getKey())) {
Property property = policy.get(ElectionPolicyResourceDefinition.WILDCARD_PATH.getKey()).asProperty();
writeElectionPolicy(writer, property.getName(), property.getValue());
}
writer.writeEndElement();
}
private static void writeElectionPolicy(XMLExtendedStreamWriter writer, String name, ModelNode policy) throws XMLStreamException {
switch (name) {
case RandomElectionPolicyResourceDefinition.PATH_VALUE: {
writer.writeStartElement(XMLElement.RANDOM_ELECTION_POLICY.getLocalName());
break;
}
case SimpleElectionPolicyResourceDefinition.PATH_VALUE: {
writer.writeStartElement(XMLElement.SIMPLE_ELECTION_POLICY.getLocalName());
writeAttributes(writer, policy, SimpleElectionPolicyResourceDefinition.Attribute.class);
break;
}
default: {
throw new IllegalArgumentException(name);
}
}
writeElements(writer, policy, ElectionPolicyResourceDefinition.Attribute.class);
writer.writeEndElement();
}
private static <A extends Enum<A> & Attribute> void writeAttributes(XMLExtendedStreamWriter writer, ModelNode model, Class<A> attributeClass) throws XMLStreamException {
writeAttributes(writer, model, EnumSet.allOf(attributeClass));
}
private static void writeAttributes(XMLExtendedStreamWriter writer, ModelNode model, Iterable<? extends Attribute> attributes) throws XMLStreamException {
for (Attribute attribute : attributes) {
writeAttribute(writer, model, attribute);
}
}
private static void writeAttribute(XMLExtendedStreamWriter writer, ModelNode model, Attribute attribute) throws XMLStreamException {
attribute.getDefinition().getAttributeMarshaller().marshallAsAttribute(attribute.getDefinition(), model, false, writer);
}
private static <A extends Enum<A> & Attribute> void writeElements(XMLExtendedStreamWriter writer, ModelNode model, Class<A> attributeClass) throws XMLStreamException {
writeElements(writer, model, EnumSet.allOf(attributeClass));
}
private static void writeElements(XMLExtendedStreamWriter writer, ModelNode model, Iterable<? extends Attribute> attributes) throws XMLStreamException {
for (Attribute attribute : attributes) {
writeElement(writer, model, attribute);
}
}
private static void writeElement(XMLExtendedStreamWriter writer, ModelNode model, Attribute attribute) throws XMLStreamException {
attribute.getDefinition().getAttributeMarshaller().marshallAsElement(attribute.getDefinition(), model, false, writer);
}
}