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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.impl;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.xml.stream.XMLStreamException;
import org.apache.tuscany.sca.TuscanyRuntime;
import org.apache.tuscany.sca.contribution.Contribution;
import org.apache.tuscany.sca.contribution.ContributionMetadata;
import org.apache.tuscany.sca.contribution.Export;
import org.apache.tuscany.sca.contribution.Import;
import org.apache.tuscany.sca.contribution.java.JavaImport;
import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
import org.apache.tuscany.sca.monitor.ValidationException;
import com.ibm.jvm.util.ByteArrayOutputStream;
public class DependencyUtils {
public static List<String> getDependencies(String contributionURI, Map<String, ZipInputStream> possibles) throws ValidationException, IOException, ContributionReadException, XMLStreamException {
Map<String, ContributionMetadata> contributionMetaDatas = new HashMap<String, ContributionMetadata>();
for (String curi : possibles.keySet()) {
ZipInputStream zis = possibles.get(curi);
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
if (Contribution.SCA_CONTRIBUTION_META.equals(entry.getName())) {
byte[] buffer = new byte[2048];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BufferedOutputStream bos = new BufferedOutputStream(baos, buffer.length);
int size;
while ((size = zis.read(buffer, 0, buffer.length)) != -1) {
bos.write(buffer, 0, size);
}
bos.close();
contributionMetaDatas.put(curi, (ContributionMetadata)TuscanyRuntime.newInstance().getDeployer().loadXMLDocument(new StringReader(baos.toString())));
}
}
zis.close(); // close it so no one tries to reuse the already read stream
}
return getDependencies(contributionMetaDatas, contributionURI);
}
public static List<String> getDependencies(Map<String, ContributionMetadata> possibles, String targetURI) throws ValidationException {
if (!possibles.containsKey(targetURI)) {
throw new IllegalArgumentException(targetURI);
}
Set<String> dependencies = new HashSet<String>();
// Go through the contribution imports
for (Import import_ : possibles.get(targetURI).getImports()) {
boolean resolved = false;
// Go through all contribution candidates and their exports
List<Export> matchingExports = new ArrayList<Export>();
for (String dependencyURI : possibles.keySet()) {
if (dependencyURI.equals(targetURI)) {
// Do not self import
continue;
}
ContributionMetadata dependency = possibles.get(dependencyURI);
// When a contribution contains a reference to an artifact from a namespace that
// is declared in an import statement of the contribution, if the SCA artifact
// resolution mechanism is used to resolve the artifact, the SCA runtime MUST resolve
// artifacts from the locations identified by the import statement(s) for the namespace.
if (import_ instanceof NamespaceImport) {
NamespaceImport namespaceImport = (NamespaceImport)import_;
if (namespaceImport.getLocation() != null)
if (!namespaceImport.getLocation().equals(dependencyURI))
continue;
}
if (import_ instanceof JavaImport) {
JavaImport javaImport = (JavaImport)import_;
if (javaImport.getLocation() != null)
if (!javaImport.getLocation().equals(dependencyURI))
continue;
}
for (Export export : dependency.getExports()) {
// If an export from a contribution matches the import in hand
// add that contribution to the dependency set
if (import_.match(export)) {
resolved = true;
matchingExports.add(export);
if (!dependencies.contains(dependencyURI)) {
dependencies.add(dependencyURI);
// Now add the dependencies of that contribution
getDependencies(possibles, dependencyURI);
} // end if
} // end if
} // end for
} // end for
if (!resolved) {
throw new ValidationException("Contribution " + targetURI + " has unresolved Import: " + import_);
}
}
return new ArrayList<String>(dependencies);
}
}
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