diff options
Diffstat (limited to 'sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org')
7 files changed, 913 insertions, 0 deletions
diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/BundleReference.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/BundleReference.java new file mode 100644 index 0000000000..3f82f6fb17 --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/BundleReference.java @@ -0,0 +1,136 @@ +/* + * 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.osgi; + +import org.osgi.framework.Bundle; +import org.osgi.framework.Constants; + +/** + * A reference to an OSGi bundle + * + * @version $Rev$ $Date$ + */ +public class BundleReference { + + /** + * The bundle. + */ + private Bundle bundle; + + /** + * The bundle version. + */ + private String version; + + /** + * The bundle name and version. + */ + private String symbolicName; + + /** + * Constructs a new BundleReference. + * + * @param bundle + */ + public BundleReference(Bundle bundle) { + this.bundle = bundle; + this.symbolicName = bundle.getSymbolicName(); + this.version = (String)bundle.getHeaders().get(Constants.BUNDLE_VERSION); + } + + /** + * Constructs a new BundleReference. + * + * @param bundleSymbolicName The bundle symbolic name + * @param bundleVersion The bundle version + */ + public BundleReference(String bundleSymbolicName, String bundleVersion) { + this.version = bundleVersion; + this.symbolicName = bundleSymbolicName; + } + + /** + * Get the referenced bundle. + * + * @return The referenced bundle + */ + public Bundle getBundle() { + return bundle; + } + + /** + * Get the referenced bundle version. + * + * @return The bundle version + */ + public String getVersion() { + return version; + } + + /** + * Get the referenced bundle name and version. + * + * @return The bundle name + */ + public String getSymbolicName() { + return symbolicName; + } + + /** + * Returns true if the bundle reference is unresolved. + * + * @return Whether or not the bundle has been resolved + */ + public boolean isUnresolved() { + return bundle == null; + } + + @Override + public int hashCode() { + final int prime = 31; + int result = 1; + result = prime * result + ((symbolicName == null) ? 0 : symbolicName.hashCode()); + result = prime * result + ((version == null) ? 0 : version.hashCode()); + return result; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) + return true; + if (obj == null) + return false; + if (getClass() != obj.getClass()) + return false; + BundleReference other = (BundleReference)obj; + if (symbolicName == null) { + if (other.symbolicName != null) + return false; + } else if (!symbolicName.equals(other.symbolicName)) + return false; + if (version == null) { + if (other.version != null) + return false; + } else if (!version.equals(other.version)) + return false; + return true; + } + +} diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleActivator.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleActivator.java new file mode 100644 index 0000000000..ac7ff7b4ea --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleActivator.java @@ -0,0 +1,151 @@ +/* + * 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.osgi.impl; + +import java.io.IOException; +import java.io.InputStream; +import java.net.MalformedURLException; +import java.net.URL; +import java.util.jar.JarInputStream; +import java.util.jar.Manifest; + +import org.osgi.framework.Bundle; +import org.osgi.framework.BundleActivator; +import org.osgi.framework.BundleContext; +import org.osgi.framework.BundleException; +import org.osgi.framework.Constants; + +/** + * The Bundle Activator that receives the BundleContext + */ +public class OSGiBundleActivator implements BundleActivator { + private static BundleContext bundleContext; + + public static BundleContext getBundleContext() { + return bundleContext; + } + + public void start(BundleContext context) throws Exception { + bundleContext = context; + } + + public void stop(BundleContext context) throws Exception { + bundleContext = null; + } + + public static Bundle findBundle(URL bundleURL) { + if (bundleContext == null) { + return null; + } + Bundle[] installedBundles = bundleContext.getBundles(); + for (Bundle bundle : installedBundles) { + URL root = bundle.getEntry("/"); + if (root != null && root.getHost() != null && root.getHost().equals(bundleURL.getHost())) { + return bundle; + } + } + return null; + } + + public static Bundle findBundle(String symbolicName, String version) { + if (bundleContext == null) { + return null; + } + Bundle[] bundles = bundleContext.getBundles(); + if (version == null) { + version = "0.0.0"; + } + for (Bundle b : bundles) { + String v = (String)b.getHeaders().get(Constants.BUNDLE_VERSION); + if (v == null) { + v = "0.0.0"; + } + if (b.getSymbolicName().equals(symbolicName) && (version.equals("0.0.0") || v.equals(version))) { + return b; + } + } + return null; + } + + public static Bundle installBundle(String location, InputStream is) throws BundleException { + getBundleContext(); + return bundleContext.installBundle(location, is); + } + + public static Bundle installBundle(String location) throws BundleException, IOException { + getBundleContext(); + + URL url = new URL(location); + Bundle bundle = null; + InputStream is = url.openStream(); + JarInputStream jar = new JarInputStream(is); + + Manifest manifest = jar.getManifest(); + jar.close(); + if (manifest != null) { + String symbolicName = manifest.getMainAttributes().getValue(Constants.BUNDLE_SYMBOLICNAME); + String version = manifest.getMainAttributes().getValue(Constants.BUNDLE_VERSION); + if (symbolicName != null) { + bundle = findBundle(symbolicName, version); + if (bundle != null) { + return bundle; + } + } else { + return null; + } + } else { + return null; + } + try { + is = url.openStream(); + bundle = bundleContext.installBundle(location, is); + } finally { + is.close(); + } + return bundle; + } + + public static Bundle findBundleByLocation(String bundleLocation) { + if (bundleContext != null) { + Bundle[] installedBundles = bundleContext.getBundles(); + for (Bundle bundle : installedBundles) { + if (bundle.getLocation().equals(bundleLocation)) + return bundle; + } + } + return null; + } + + public static Bundle findBundle(String bundleLocation) { + if (bundleContext != null) { + if (bundleLocation.startsWith("bundle:") || bundleLocation.startsWith("bundleresource:")) { + try { + return findBundle(new URL(bundleLocation)); + } catch (MalformedURLException e) { + // ignore + } + } else { + return findBundleByLocation(bundleLocation); + } + } + return null; + } + +} diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleContributionScanner.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleContributionScanner.java new file mode 100644 index 0000000000..d64d2ec46c --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleContributionScanner.java @@ -0,0 +1,153 @@ +/*
+ * 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.osgi.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+
+import org.apache.tuscany.sca.contribution.PackageType;
+import org.apache.tuscany.sca.contribution.processor.ContributionException;
+import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.scanner.ContributionScanner;
+import org.osgi.framework.Bundle;
+
+/**
+ * Bundle Contribution package processor.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiBundleContributionScanner implements ContributionScanner {
+
+ public OSGiBundleContributionScanner() {
+ }
+
+ public String getContributionType() {
+ return PackageType.BUNDLE;
+ }
+
+ public URL getArtifactURL(URL sourceURL, String artifact) throws ContributionReadException {
+ Bundle bundle = null;
+ try {
+ bundle = OSGiBundleActivator.findBundle(sourceURL);
+ if (bundle != null) {
+ URL url = bundle.getResource(artifact);
+ if (url == null)
+ System.out.println("Could not load resource " + artifact);
+ return url;
+ }
+ } catch (Exception e) {
+ }
+ return null;
+ }
+
+ public List<String> getJarArtifacts(URL packageSourceURL, InputStream inputStream) throws ContributionException,
+ IOException {
+ if (packageSourceURL == null) {
+ throw new IllegalArgumentException("Invalid null package source URL.");
+ }
+
+ if (inputStream == null) {
+ throw new IllegalArgumentException("Invalid null source inputstream.");
+ }
+
+ // Assume the root is a jar file
+ JarInputStream jar = new JarInputStream(inputStream);
+ try {
+ Set<String> names = new HashSet<String>();
+ while (true) {
+ JarEntry entry = jar.getNextJarEntry();
+ if (entry == null) {
+ // EOF
+ break;
+ }
+
+ // FIXME: Maybe we should externalize the filter as a property
+ String name = entry.getName();
+ if (!name.startsWith(".") && !entry.isDirectory()) {
+
+ // Trim trailing /
+ if (name.endsWith("/")) {
+ name = name.substring(0, name.length() - 1);
+ }
+
+ // Add the entry name
+ if (!names.contains(name) && name.length() > 0) {
+ names.add(name);
+
+ }
+ }
+ }
+
+ // Return list of URIs
+ List<String> artifacts = new ArrayList<String>();
+ for (String name: names) {
+ artifacts.add(name);
+ }
+ return artifacts;
+
+ } finally {
+ jar.close();
+ }
+}
+
+ public List<String> getArtifacts(URL packageSourceURL) throws ContributionReadException {
+
+ if (packageSourceURL == null) {
+ throw new IllegalArgumentException("Invalid null package source URL.");
+ }
+ Bundle bundle = OSGiBundleActivator.findBundle(packageSourceURL);
+
+ if (bundle == null) {
+ throw new IllegalArgumentException("Could not find OSGi bundle " + packageSourceURL);
+ }
+
+ List<String> artifacts = new ArrayList<String>();
+
+ try {
+ Enumeration<?> entries = bundle.findEntries("/", "*", true);
+ while (entries.hasMoreElements()) {
+ URL entry = (URL)entries.nextElement();
+ String entryName = entry.getPath();
+ if (entryName.startsWith("/"))
+ entryName = entryName.substring(1);
+ artifacts.add(entryName);
+
+ if (entryName.endsWith(".jar")) {
+
+ URL jarResource = bundle.getResource(entryName);
+ artifacts.addAll(getJarArtifacts(jarResource, jarResource.openStream()));
+ }
+
+ }
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+
+ return artifacts;
+ }
+}
diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleProcessor.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleProcessor.java new file mode 100644 index 0000000000..0445159d3a --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleProcessor.java @@ -0,0 +1,85 @@ +/* + * 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.osgi.impl; + +import java.util.List; + +import org.apache.tuscany.sca.contribution.Artifact; +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.osgi.BundleReference; +import org.osgi.framework.Bundle; + +/** + * OSGi bundle processor + * + * @version $Rev$ $Date$ + */ +public class OSGiBundleProcessor { + + // private boolean initializedOSGi; + // private OSGiRuntime osgiRuntime; + + public OSGiBundleProcessor() { + } + + public Object installContributionBundle(Contribution contribution) { + + Object bundle = null; + try { + bundle = OSGiBundleActivator.installBundle(contribution.getLocation()); + } catch (Exception e) { + // If OSGi cannot process the jar, treat the bundle as a plain jar file. + } + return bundle; + } + + public BundleReference installNestedBundle(Contribution contribution, + String bundleSymbolicName, + String bundleVersion) { + + BundleReference bundleReference = null; + + List<Artifact> artifacts = contribution.getArtifacts(); + for (Artifact a : artifacts) { + if (a.getURI().endsWith(".jar")) { + try { + Bundle bundle = OSGiBundleActivator.installBundle(a.getLocation()); + if (bundle != null) { + bundleReference = new BundleReference(bundle); + break; + } + } catch (Exception e) { + // If OSGi cannot process the jar, treat the bundle as a plain jar file. + } + } + } + return bundleReference; + } + + // private void initialize() { + // try { + // if (!initializedOSGi) { + // initializedOSGi = true; + // osgiRuntime = OSGiRuntime.getRuntime(); + // } + // } catch (Exception e) { + // } + // } +} diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java new file mode 100644 index 0000000000..05510bbd3d --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java @@ -0,0 +1,140 @@ +/* + * 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.osgi.impl; + +import java.util.HashMap; +import java.util.Map; + +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.osgi.BundleReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.osgi.framework.Bundle; + +/** + * A Model Resolver for BundleReferences. + * + * @version $Rev$ $Date$ + */ +public class OSGiBundleReferenceModelResolver implements ModelResolver { + private Contribution contribution; + private Map<String, BundleReference> map = new HashMap<String, BundleReference>(); + + private OSGiBundleProcessor bundleProcessor; + + public OSGiBundleReferenceModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) { + this.contribution = contribution; + this.bundleProcessor = new OSGiBundleProcessor(); + } + + public void addModel(Object resolved) { + BundleReference bundleRef = (BundleReference)resolved; + map.put(bundleRef.getSymbolicName(), bundleRef); + } + + public Object removeModel(Object resolved) { + return map.remove(((BundleReference)resolved).getSymbolicName()); + } + + /** + * Handle artifact resolution when the specific class reference is imported from another contribution + * @param unresolved + * @return + */ + private BundleReference resolveImportedModel(BundleReference unresolved) { + BundleReference resolved = unresolved; + + if (this.contribution != null) { + for (Import import_ : this.contribution.getImports()) { + + resolved = import_.getModelResolver().resolveModel(BundleReference.class, unresolved); + if (resolved != unresolved) + break; + } + + } + return resolved; + } + + public <T> T resolveModel(Class<T> modelClass, T unresolved) { + Object resolved = map.get(unresolved); + + if (resolved != null) { + return modelClass.cast(resolved); + } + + if (OSGiBundleActivator.getBundleContext() == null) + return unresolved; + + //Load a class on demand + Bundle bundle = null; + String bundleName = ((BundleReference)unresolved).getSymbolicName(); + String bundleVersion = ((BundleReference)unresolved).getVersion(); + + bundle = OSGiBundleActivator.findBundle(bundleName, bundleVersion); + BundleReference bundleReference; + + if (bundle == null) { + bundleReference = bundleProcessor.installNestedBundle(contribution, bundleName, bundleVersion); + } else { + bundleReference = + new BundleReference(bundle); + } + + if (bundleReference != null) { + //if we load the class + + map.put(((BundleReference)unresolved).getSymbolicName(), bundleReference); + + // Return the resolved BundleReference + return modelClass.cast(bundleReference); + } else { + //delegate resolution of the class + resolved = this.resolveImportedModel((BundleReference)unresolved); + return modelClass.cast(resolved); + } + + } + + private String getBundleFileName(Object bundle) { + if (bundle instanceof Bundle) { + String path = ((Bundle)bundle).getLocation(); + if (path.endsWith("/")) + path = path.substring(0, path.length() - 1); + if (path.startsWith(contribution.getLocation())) { + if (path.equals(contribution.getLocation())) { + int index = path.lastIndexOf('/'); + if (index > 0 && index < path.length() - 1) + path = path.substring(index + 1); + } else { + path = path.substring(contribution.getLocation().length()); + if (path.startsWith("/")) + path = path.substring(1); + } + } else if (path.lastIndexOf('/') >= 0) + path = path.substring(path.lastIndexOf('/') + 1); + return path; + } + return null; + + } + +} diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java new file mode 100644 index 0000000000..15b77490b8 --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java @@ -0,0 +1,132 @@ +/* + * 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.osgi.impl; + +import java.util.HashMap; +import java.util.Map; + +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.resolver.ClassReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.osgi.framework.Bundle; + +/** + * A Model Resolver for ClassReferences. + * + * @version $Rev$ $Date$ + */ +public class OSGiClassReferenceModelResolver implements ModelResolver { + private Contribution contribution; + private Map<String, ClassReference> map = new HashMap<String, ClassReference>(); + private Bundle bundle; + private boolean initialized; + private boolean useOSGi; + + public OSGiClassReferenceModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) { + this.contribution = contribution; + } + + public void addModel(Object resolved) { + ClassReference clazz = (ClassReference)resolved; + map.put(clazz.getClassName(), clazz); + } + + public Object removeModel(Object resolved) { + return map.remove(((ClassReference)resolved).getClassName()); + } + + /** + * Handle artifact resolution when the specific class reference is imported from another contribution + * @param unresolved + * @return + */ + private ClassReference resolveImportedModel(ClassReference unresolved) { + ClassReference resolved = unresolved; + + if (this.contribution != null) { + for (Import import_ : this.contribution.getImports()) { + + if (resolved == unresolved && bundle != null) { + resolved = import_.getModelResolver().resolveModel(ClassReference.class, unresolved); + if (resolved != unresolved) + break; + } + } + + } + return resolved; + } + + public <T> T resolveModel(Class<T> modelClass, T unresolved) { + Object resolved = map.get(unresolved); + + if (resolved != null) { + return modelClass.cast(resolved); + } + initialize(); + if (!useOSGi) + return unresolved; + + //Load a class on demand + Class clazz = null; + if (bundle != null) { + try { + clazz = bundle.loadClass(((ClassReference)unresolved).getClassName()); + } catch (Exception e) { + // we will later try to delegate to imported model resolvers + } + } + + if (clazz != null) { + //if we load the class + // Store a new ClassReference wrapping the loaded class + ClassReference classReference = new ClassReference(clazz); + map.put(getPackageName(classReference), classReference); + + // Return the resolved ClassReference + return modelClass.cast(classReference); + } else { + //delegate resolution of the class + resolved = this.resolveImportedModel((ClassReference)unresolved); + return modelClass.cast(resolved); + } + + } + + /*************** + * Helper methods + ***************/ + + private String getPackageName(ClassReference clazz) { + int pos = clazz.getClassName().lastIndexOf("."); + return clazz.getClassName().substring(0, pos - 1); + } + + private void initialize() { + try { + bundle = OSGiBundleActivator.findBundle(contribution.getLocation()); + useOSGi = bundle != null; + } catch (Throwable e) { + // Ignore errors, default to ClassReferenceModelResolver + } + } +} diff --git a/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiModelResolverImpl.java b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiModelResolverImpl.java new file mode 100644 index 0000000000..244fb4048b --- /dev/null +++ b/sandbox/ant/sca/branches/tb7/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiModelResolverImpl.java @@ -0,0 +1,116 @@ +/* + * 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.osgi.impl; + +import java.util.Collection; +import java.util.HashMap; +import java.util.Hashtable; +import java.util.Map; + +import org.apache.tuscany.sca.contribution.osgi.BundleReference; +import org.apache.tuscany.sca.contribution.resolver.ClassReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.osgi.framework.Bundle; + +/** + * An implementation of an artifact resolver for OSGi bundles. + * + * @version $Rev$ $Date$ + */ +public class OSGiModelResolverImpl implements ModelResolver { + private static final long serialVersionUID = -7826976465762296634L; + + private Map<Object, Object> map = new HashMap<Object, Object>(); + + private Hashtable<String, Bundle> bundles; + public OSGiModelResolverImpl(Hashtable<String, Bundle> bundles) { + this.bundles = bundles; + } + + + public <T> T resolveModel(Class<T> modelClass, T unresolved) { + Object resolved = map.get(unresolved); + if (resolved != null) { + + // Return the resolved object + return modelClass.cast(resolved); + + } else if (unresolved instanceof ClassReference) { + + // Load a class on demand + ClassReference classReference = (ClassReference)unresolved; + Class clazz = null; + for (Bundle bundle : bundles.values()) { + try { + clazz = bundle.loadClass(classReference.getClassName()); + } catch (ClassNotFoundException e) { + continue; + } + break; + } + if (clazz == null) { + + // Return the unresolved object + return unresolved; + } + + // Store a new ClassReference wrapping the loaded class + resolved = new ClassReference(clazz); + map.put(resolved, resolved); + + // Return the resolved ClassReference + return modelClass.cast(resolved); + + } else if (unresolved instanceof BundleReference) { + for (String bundlePath: bundles.keySet()) { + Bundle bundle = bundles.get(bundlePath); + BundleReference bundleRef = (BundleReference)unresolved; + String bundleVersion = (String)bundle.getHeaders().get("Bundle-Version"); + if (bundle.getSymbolicName().equals(bundleRef.getSymbolicName())&& + (bundleVersion == null || bundleRef.getVersion() == null || + bundleVersion.equals(bundleRef.getVersion()))) { + + resolved = new BundleReference(bundle); + map.put(resolved, resolved); + + // Return the resolved BundleReference + return modelClass.cast(resolved); + + } + } + } + + // Return the unresolved object + return unresolved; + } + + public void addModel(Object resolved) { + map.put(resolved, resolved); + } + + public Object removeModel(Object resolved) { + return map.remove(resolved); + } + + public Collection<Object> getModels() { + return map.values(); + } + +} |