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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.contribution.processor.impl;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import org.apache.tuscany.sca.assembly.Composite;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.contribution.ContributionFactory;
import org.apache.tuscany.sca.contribution.ContributionMetadata;
import org.apache.tuscany.sca.contribution.DefaultExport;
import org.apache.tuscany.sca.contribution.DefaultImport;
import org.apache.tuscany.sca.contribution.Export;
import org.apache.tuscany.sca.contribution.Import;
import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
import org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessorExtensionPoint;
import org.apache.tuscany.sca.contribution.resolver.ClassReference;
import org.apache.tuscany.sca.contribution.resolver.DefaultModelResolver;
import org.apache.tuscany.sca.contribution.resolver.ExtensibleModelResolver;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.contribution.resolver.ModelResolverExtensionPoint;
import org.apache.tuscany.sca.contribution.scanner.ContributionScanner;
import org.apache.tuscany.sca.contribution.scanner.impl.DirectoryContributionScanner;
import org.apache.tuscany.sca.contribution.scanner.impl.JarContributionScanner;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.monitor.Monitor;
/**
* URLArtifactProcessor that handles contribution files and returns a contribution
* info model.
*
* @version $Rev$ $Date$
*/
public class ContributionInfoProcessor implements URLArtifactProcessor<Contribution>{
private ContributionFactory contributionFactory;
private ModelResolverExtensionPoint modelResolvers;
private FactoryExtensionPoint modelFactories;
private URLArtifactProcessorExtensionPoint artifactProcessors;
private URLArtifactProcessor<Object> artifactProcessor;
private StAXArtifactProcessor<Object> extensionProcessor;
public ContributionInfoProcessor(ExtensionPointRegistry extensionPoints, StAXArtifactProcessor<Object> extensionProcessor, Monitor monitor) {
this.modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);
this.modelResolvers = extensionPoints.getExtensionPoint(ModelResolverExtensionPoint.class);
hackResolvers(modelResolvers);
URLArtifactProcessorExtensionPoint artifactProcessors = extensionPoints.getExtensionPoint(URLArtifactProcessorExtensionPoint.class);
this.artifactProcessors = artifactProcessors;
this.artifactProcessor = new ExtensibleURLArtifactProcessor(artifactProcessors, monitor);
this.extensionProcessor = extensionProcessor;
this.contributionFactory = modelFactories.getFactory(ContributionFactory.class);
}
public ContributionInfoProcessor(FactoryExtensionPoint modelFactories, ModelResolverExtensionPoint modelResolvers, URLArtifactProcessor<Object> artifactProcessor) {
this.modelFactories = modelFactories;
this.modelResolvers = modelResolvers;
hackResolvers(modelResolvers);
this.artifactProcessor = artifactProcessor;
this.contributionFactory = modelFactories.getFactory(ContributionFactory.class);
}
public String getArtifactType() {
return ".contribution/info";
}
public Class<Contribution> getModelType() {
return null;
}
public Contribution read(URL parentURL, URI contributionURI, URL contributionURL) throws ContributionReadException {
// Create contribution model
Contribution contribution = contributionFactory.createContribution();
contribution.setURI(contributionURI.toString());
contribution.setLocation(contributionURL.toString());
ModelResolver modelResolver = new ExtensibleModelResolver(contribution, modelResolvers, modelFactories);
contribution.setModelResolver(modelResolver);
contribution.setUnresolved(true);
// Create a contribution scanner
ContributionScanner scanner = null;
if (scanner == null) {
try {
if ("file".equals(contributionURL.getProtocol()) && new File(contributionURL.toURI()).isDirectory()) {
scanner = new DirectoryContributionScanner();
} else {
scanner = new JarContributionScanner();
}
} catch (URISyntaxException e) {
throw new ContributionReadException(e);
}
}
// Read generated and user sca-contribution.xml files
boolean contributionMetadata = false;
for (String path: new String[]{
Contribution.SCA_CONTRIBUTION_GENERATED_META,
Contribution.SCA_CONTRIBUTION_META}) {
URL url = scanner.getArtifactURL(contribution, path);
try {
// Check if the file actually exists before trying to read it
URLConnection connection = url.openConnection();
connection.setUseCaches(false);
InputStream is = connection.getInputStream();
is.close();
} catch (IOException e) {
continue;
}
contributionMetadata = true;
// Read the sca-contribution.xml file
ContributionMetadata c = (ContributionMetadata)artifactProcessor.read(contributionURL, URI.create(path), url);
contribution.getImports().addAll(c.getImports());
contribution.getExports().addAll(c.getExports());
contribution.getDeployables().addAll(c.getDeployables());
contribution.getExtensions().addAll(c.getExtensions());
contribution.getAttributeExtensions().addAll(c.getAttributeExtensions());
}
// If no sca-contribution.xml file was provided then consider
// all composites in the contribution as deployables, and also
// read any files that are explicitly asssigned artifact processors
// as they are likely to provide relevant metadata info
if (!contributionMetadata) {
List<String> artifactURIs;
try {
artifactURIs = scanner.scan(contribution);
} catch (ContributionReadException e) {
artifactURIs = null;
}
if (artifactURIs != null) {
for (String artifactURI: artifactURIs) {
boolean read = false;
if (artifactURI.endsWith(".composite")) {
read = true;
} else {
int s= artifactURI.lastIndexOf("/");
String fileName = artifactURI.substring(s + 1);
if (artifactProcessors.getProcessor(fileName) != null) {
read = true;
}
}
if (read) {
URL artifactURL = scanner.getArtifactURL(contribution, artifactURI);
// Read each artifact
Object model = artifactProcessor.read(contributionURL, URI.create(artifactURI), artifactURL);
// In the absence of more info, consider all composites as deployable
if (model instanceof Composite) {
contribution.getDeployables().add((Composite)model);
}
}
}
}
// Add default contribution import and export
DefaultImport defaultImport = contributionFactory.createDefaultImport();
defaultImport.setModelResolver(new DefaultModelResolver());
contribution.getImports().add(defaultImport);
DefaultExport defaultExport = contributionFactory.createDefaultExport();
contribution.getExports().add(defaultExport);
}
return contribution;
}
public void resolve(Contribution contribution, ModelResolver resolver) throws ContributionResolveException {
// Mark the contribution model resolved
ModelResolver contributionResolver = contribution.getModelResolver();
contribution.setUnresolved(false);
contributionResolver.addModel(contribution);
// Resolve imports and exports
for (Export export: contribution.getExports()) {
if (export instanceof DefaultExport) {
// Initialize the default export's resolver
export.setModelResolver(contributionResolver);
} else {
extensionProcessor.resolve(export, contributionResolver);
}
}
for (Import import_: contribution.getImports()) {
extensionProcessor.resolve(import_, contributionResolver);
}
}
/**
* FIXME Temporary hack for testing the ClassLoaderModelResolver.
*
* @param modelResolvers
*/
private static void hackResolvers(ModelResolverExtensionPoint modelResolvers) {
Class<?> resolverClass = modelResolvers.getResolver(ClassReference.class);
if (resolverClass==null || !resolverClass.getName().equals("org.apache.tuscany.sca.contribution.java.impl.ClassLoaderModelResolver")) {
try {
Class<?> loaderResolverClass = Class.forName("org.apache.tuscany.sca.contribution.java.impl.ClassLoaderModelResolver", true, ContributionContentProcessor.class.getClassLoader());
modelResolvers.addResolver(ClassReference.class, (Class<? extends ModelResolver>)loaderResolverClass);
} catch (ClassNotFoundException e) {
}
}
}
}
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