/*
* 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.geronimo.aries.resolver;
import java.io.File;
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 javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.aries.application.ApplicationMetadata;
import org.apache.aries.application.Content;
import org.apache.aries.application.management.AriesApplication;
import org.apache.aries.application.management.AriesApplicationResolver;
import org.apache.aries.application.management.BundleInfo;
import org.apache.aries.application.management.ResolveConstraint;
import org.apache.aries.application.management.ResolverException;
import org.apache.aries.application.utils.manifest.ManifestHeaderProcessor;
import org.apache.felix.bundlerepository.Reason;
import org.apache.felix.bundlerepository.Repository;
import org.apache.felix.bundlerepository.RepositoryAdmin;
import org.apache.felix.bundlerepository.Resolver;
import org.apache.felix.bundlerepository.Resource;
import org.apache.geronimo.aries.resolver.generator.RepositoryDescriptorGenerator;
import org.apache.geronimo.aries.resolver.impl.ApplicationResourceImpl;
import org.apache.geronimo.aries.resolver.impl.OBRBundleInfo;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.Version;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
/**
* @version $Rev: 926146 $ $Date: 2010-03-22 11:44:11 -0400 (Mon, 22 Mar 2010) $
*/
public class GeronimoOBRResolver implements AriesApplicationResolver {
private static Logger log = LoggerFactory.getLogger(GeronimoOBRResolver.class);
private final RepositoryAdmin repositoryAdmin;
private boolean includeOptional = true;
public GeronimoOBRResolver(RepositoryAdmin repositoryAdmin) {
this.repositoryAdmin = repositoryAdmin;
}
public void setIncludeOptional(boolean includeOptional) {
this.includeOptional = includeOptional;
}
public Set<BundleInfo> resolve(AriesApplication app, ResolveConstraint... constraints)
throws ResolverException {
log.trace("resolving {}", app);
ApplicationMetadata appMeta = app.getApplicationMetadata();
String appName = appMeta.getApplicationSymbolicName();
Version appVersion = appMeta.getApplicationVersion();
List<Content> appContent = appMeta.getApplicationContents();
Repository appRepository = null;
try {
Document doc = RepositoryDescriptorGenerator.generateRepositoryDescriptor(appName + "_"
+ appVersion,
app.getBundleInfo());
File f = File.createTempFile(appName + "_" + appVersion, "repository.xml");
TransformerFactory.newInstance().newTransformer().transform(new DOMSource(doc),
new StreamResult(f));
appRepository = repositoryAdmin.getHelper().repository(f.toURI().toURL());
f.delete();
} catch (Exception e) {
throw new ResolverException(e);
}
List<Repository> appRepositories = new ArrayList<Repository>();
// add system & local repositories
appRepositories.add(repositoryAdmin.getSystemRepository());
appRepositories.add(repositoryAdmin.getLocalRepository());
// add application repository
appRepositories.add(appRepository);
// add user repositories
Repository[] userRepositories = repositoryAdmin.listRepositories();
for (Repository userRepository : userRepositories) {
appRepositories.add(userRepository);
}
Resolver obrResolver = repositoryAdmin.resolver(appRepositories.toArray(new Repository[appRepositories.size()]));
// add a resource describing the requirements of the application metadata.
try {
obrResolver.add(new ApplicationResourceImpl(repositoryAdmin, appName, appVersion, appContent));
} catch (InvalidSyntaxException e) {
throw new ResolverException(e);
}
if (obrResolver.resolve()) {
Set<BundleInfo> result = new HashSet<BundleInfo>();
for (Resource resource : obrResolver.getRequiredResources()) {
BundleInfo bundleInfo = toBundleInfo(resource, false);
result.add(bundleInfo);
}
if (includeOptional) {
for (Resource resource : obrResolver.getOptionalResources()) {
BundleInfo bundleInfo = toBundleInfo(resource, true);
result.add(bundleInfo);
}
}
return result;
} else {
throw new ResolverException("Could not resolve requirements: "
+ getUnsatisfiedRequirements(obrResolver));
}
}
public BundleInfo getBundleInfo(String bundleSymbolicName, Version bundleVersion) {
Map<String, String> attribs = new HashMap<String, String>();
attribs.put(Resource.VERSION, bundleVersion.toString());
String filterString = ManifestHeaderProcessor.generateFilter(Resource.SYMBOLIC_NAME,
bundleSymbolicName, attribs);
Resource[] resources;
try {
resources = repositoryAdmin.discoverResources(filterString);
} catch (InvalidSyntaxException e) {
throw new RuntimeException("Unexpected exception", e);
}
if (resources != null && resources.length > 0) {
return toBundleInfo(resources[0], false);
} else {
return null;
}
}
private String getUnsatisfiedRequirements(Resolver resolver) {
Reason[] reasons = resolver.getUnsatisfiedRequirements();
if (reasons != null) {
StringBuilder sb = new StringBuilder();
for (int reqIdx = 0; reqIdx < reasons.length; reqIdx++) {
sb.append(" " + reasons[reqIdx].getRequirement().getFilter()).append("\n");
Resource resource = reasons[reqIdx].getResource();
if (resource != null) {
sb.append(" " + resource.getPresentationName()).append("\n");
}
}
return sb.toString();
}
return null;
}
private BundleInfo toBundleInfo(Resource resource, boolean optional) {
Map<String, String> directives = null;
if (optional) {
directives = new HashMap<String, String>();
directives.put("resolution", "optional");
}
String location = resource.getURI();
return new OBRBundleInfo(resource.getSymbolicName(),
resource.getVersion(),
location,
null,
null,
null,
null,
null,
null,
directives,
null);
}
}