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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.node.configuration.xml;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Arrays;
import java.util.StringTokenizer;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.common.xml.stax.StAXHelper;
import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.node.configuration.BindingConfiguration;
import org.apache.tuscany.sca.node.configuration.ContributionConfiguration;
import org.apache.tuscany.sca.node.configuration.DeploymentComposite;
import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
import org.apache.tuscany.sca.node.configuration.NodeConfigurationFactory;
/**
* Implements a StAX artifact processor for node implementations.
*
* @version $Rev$ $Date$
*/
public class NodeConfigurationProcessor extends BaseStAXArtifactProcessor implements
StAXArtifactProcessor<NodeConfiguration> {
private static final String SCA11_TUSCANY_NS = "http://tuscany.apache.org/xmlns/sca/1.1";
private static final QName NODE = new QName(SCA11_TUSCANY_NS, "node");
private static final QName CONTRIBUTION = new QName(SCA11_TUSCANY_NS, "contribution");
private static final QName BINDING = new QName(SCA11_TUSCANY_NS, "binding");
private static final QName BASE_URI = new QName(SCA11_TUSCANY_NS, "baseURI");
private static final QName DEPLOYMENT_COMPOSITE = new QName(SCA11_TUSCANY_NS, "deploymentComposite");
private static final String SCA11_NS = "http://docs.oasis-open.org/ns/opencsa/sca/200912";
private static final QName COMPOSITE = new QName(SCA11_NS, "composite");
private StAXArtifactProcessor processor;
private NodeConfigurationFactory nodeConfigurationFactory;
private StAXHelper helper;
public NodeConfigurationProcessor(ExtensionPointRegistry registry,
StAXArtifactProcessor processor) {
FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class);
this.nodeConfigurationFactory = modelFactories.getFactory(NodeConfigurationFactory.class);
this.processor = processor;
this.helper = StAXHelper.getInstance(registry);
}
public QName getArtifactType() {
// Returns the QName of the XML element processed by this processor
return NODE;
}
public Class<NodeConfiguration> getModelType() {
// Returns the type of model processed by this processor
return NodeConfiguration.class;
}
public NodeConfiguration read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException, XMLStreamException {
NodeConfiguration node = null;
ContributionConfiguration contribution = null;
DeploymentComposite composite = null;
BindingConfiguration binding = null;
// Skip to end element
while (true) {
int event = reader.getEventType();
switch (event) {
case XMLStreamConstants.START_ELEMENT:
QName name = reader.getName();
if (NODE.equals(name)) {
node = nodeConfigurationFactory.createNodeConfiguration();
node.setURI(reader.getAttributeValue(null, "uri"));
node.setDomainURI(reader.getAttributeValue(null, "domain"));
node.setDomainRegistryURI(reader.getAttributeValue(null, "domainRegistry"));
} else if (CONTRIBUTION.equals(name)) {
contribution = nodeConfigurationFactory.createContributionConfiguration();
contribution.setURI(reader.getAttributeValue(null, "uri"));
contribution.setLocation(reader.getAttributeValue(null, "location"));
contribution.setMetaDataURL(reader.getAttributeValue(null, "metaDataURL"));
String startDeployables = reader.getAttributeValue(null, "startDeployables");
if (startDeployables != null) {
contribution.setStartDeployables(Boolean.parseBoolean(startDeployables));
}
String dependentURIs = reader.getAttributeValue(null, "dependentURIs");
if (dependentURIs != null) {
contribution.setDependentContributionURIs(Arrays.asList(dependentURIs.split(",")));
}
node.getContributions().add(contribution);
} else if (BINDING.equals(name)) {
binding = nodeConfigurationFactory.createBindingConfiguration();
binding.setBindingType(getQName(reader, "name"));
String baseURIs = reader.getAttributeValue(null, "baseURIs");
if (baseURIs != null) {
StringTokenizer tokenizer = new StringTokenizer(baseURIs);
while (tokenizer.hasMoreTokens()) {
binding.getBaseURIs().add(tokenizer.nextToken());
}
}
node.getBindings().add(binding);
} else if (DEPLOYMENT_COMPOSITE.equals(name)) {
composite = nodeConfigurationFactory.createDeploymentComposite();
composite.setLocation(reader.getAttributeValue(null, "location"));
if (contribution != null) {
contribution.getDeploymentComposites().add(composite);
}
} else if(BASE_URI.equals(name)) {
// We also support <baseURI> element
String baseURI = reader.getElementText();
if (baseURI != null && binding != null) {
baseURI = baseURI.trim();
binding.addBaseURI(baseURI);
}
// getElementText() moves the event to END_ELEMENT
continue;
} else if (COMPOSITE.equals(name)) {
/*
Object model = processor.read(reader);
if (model instanceof Composite) {
// FIXME: We need to capture the text here
// composite.setComposite((Composite)model);
}
*/
StringWriter sw = new StringWriter();
XMLStreamWriter writer = helper.createXMLStreamWriter(sw);
helper.save(reader, writer);
composite.setContent(sw.toString());
} else {
Object ext = processor.read(reader, context);
if (ext instanceof Endpoint) {
node.getEndpointDescriptions().add((Endpoint)ext);
} else {
node.getExtensions().add(ext);
}
}
break;
case END_ELEMENT:
name = reader.getName();
if (NODE.equals(name)) {
return node;
} else if (CONTRIBUTION.equals(name)) {
contribution = null;
} else if (DEPLOYMENT_COMPOSITE.equals(name)) {
composite = null;
} else if (BINDING.equals(name)) {
binding = null;
}
}
if (reader.hasNext()) {
reader.next();
} else {
break;
}
}
return node;
}
public void resolve(NodeConfiguration node, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException {
}
public void write(NodeConfiguration node, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException,
XMLStreamException {
writeStart(writer,
NODE.getNamespaceURI(),
NODE.getLocalPart(),
new XAttr("uri", node.getURI()),
new XAttr("domainRegistry", node.getDomainRegistryURI()),
new XAttr("domain", node.getDomainURI()));
for (ContributionConfiguration c : node.getContributions()) {
writeStart(writer,
CONTRIBUTION.getNamespaceURI(),
CONTRIBUTION.getLocalPart(),
new XAttr("uri", c.getURI()),
new XAttr("location", c.getLocation()));
for (DeploymentComposite dc : c.getDeploymentComposites()) {
writeStart(writer,
DEPLOYMENT_COMPOSITE.getNamespaceURI(),
DEPLOYMENT_COMPOSITE.getLocalPart(),
new XAttr("location", dc.getLocation()),
new XAttr("contribution", dc.getContributionURI()));
if (dc.getContent() != null) {
XMLStreamReader reader = helper.createXMLStreamReader(new StringReader(dc.getContent()));
reader.nextTag(); // Move to the first element
helper.save(reader, writer);
reader.close();
}
writeEnd(writer);
}
writeEnd(writer);
}
for (BindingConfiguration b : node.getBindings()) {
StringBuffer uris = new StringBuffer();
for (String uri : b.getBaseURIs()) {
uris.append(uri).append(' ');
}
if (uris.length() > 0) {
uris.deleteCharAt(uris.length() - 1); // Remove the trailing space
} else {
uris = null;
}
String baseURIs = (uris == null) ? null : uris.toString();
writeStart(writer,
BINDING.getNamespaceURI(),
BINDING.getLocalPart(),
new XAttr("name", b.getBindingType()),
new XAttr("baseURIs", baseURIs));
writeEnd(writer);
}
// FIXME: The composite processor assumes that composite is root element
// for (Endpoint o : node.getEndpointDescriptions()) {
// processor.write(o, writer, context);
// }
for(Object o: node.getExtensions()) {
processor.write(o, writer, context);
}
writeEnd(writer);
}
}
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