/**
* Copyright 2015-2016 Red Hat, Inc, and individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.swarm.container.runtime.xmlconfig;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.enterprise.inject.Vetoed;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.jboss.as.controller.parsing.Namespace;
import org.jboss.as.controller.parsing.ProfileParsingCompletionHandler;
import org.jboss.as.server.parsing.ExtensionHandler;
import org.jboss.as.server.parsing.StandaloneXml;
import org.jboss.as.server.parsing.StandaloneXml.ParsingOption;
import org.jboss.dmr.ModelNode;
import org.jboss.staxmapper.XMLElementReader;
import org.jboss.staxmapper.XMLExtendedStreamReader;
import org.jboss.staxmapper.XMLExtendedStreamWriter;
import org.jboss.staxmapper.XMLMapper;
/**
* @author Heiko Braun
* @author Ken Finnigan
* @since 27/11/15
*/
@Vetoed
public class StandaloneXMLParser {
private static final String SERVER = "server";
private Set<QName> recognizedNames = new HashSet<>();
public StandaloneXMLParser() {
parserDelegate = new StandaloneXml(new ExtensionHandler() {
@Override
public void parseExtensions(XMLExtendedStreamReader reader, ModelNode address, Namespace namespace, List<ModelNode> list) throws XMLStreamException {
reader.discardRemainder(); // noop
}
@Override
public Set<ProfileParsingCompletionHandler> getProfileParsingCompletionHandlers() {
return Collections.emptySet();
}
@Override
public void writeExtensions(XMLExtendedStreamWriter writer, ModelNode modelNode) throws XMLStreamException {
// noop
}
}, ParsingOption.IGNORE_SUBSYSTEM_FAILURES);
xmlMapper = XMLMapper.Factory.create();
addDelegate(new QName(Namespace.CURRENT.getUriString(), SERVER), parserDelegate);
addDelegate(new QName("urn:jboss:domain:4.1", SERVER), parserDelegate);
addDelegate(new QName("urn:jboss:domain:4.0", SERVER), parserDelegate);
}
/**
* Add a parser for a subpart of the XML model.
*
* @param elementName the FQ element name (i.e. subsystem name)
* @param parser creates ModelNode's from XML input
* @return
*/
public StandaloneXMLParser addDelegate(QName elementName, XMLElementReader<List<ModelNode>> parser) {
this.recognizedNames.add(elementName);
xmlMapper.registerRootElement(elementName, parser);
return this;
}
public List<ModelNode> parse(URL xml) throws Exception {
final List<ModelNode> operationList = new ArrayList<>();
try (InputStream input = xml.openStream()) {
final XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(input);
WrappedXMLStreamReader wrappedReader = new WrappedXMLStreamReader(reader, this.recognizedNames, xmlMapper);
xmlMapper.parseDocument(operationList, wrappedReader);
}
return operationList;
}
private final XMLMapper xmlMapper;
private final StandaloneXml parserDelegate;
@Vetoed
private static class NoopXMLElementReader implements XMLElementReader<List<ModelNode>> {
@Override
public void readElement(XMLExtendedStreamReader reader, List<ModelNode> modelNode) throws XMLStreamException {
//System.out.println("Skip " + reader.getNamespaceURI() + "::" + reader.getLocalName());
reader.discardRemainder();
}
}
}