Branch for 1.3.2

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@690149 13f79535-47bb-0310-9956-ffa450edef68

7 files changed, 1152 insertions, 0 deletions

diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/EquinoxRuntime.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/EquinoxRuntime.java
new file mode 100644
index 0000000000..e4175cc7d8
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/EquinoxRuntime.java
@@ -0,0 +1,117 @@
+/*
+ * 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.osgi.runtime;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+import org.osgi.framework.BundleContext;
+
+/**
+ * Implementation of an OSGi Runtime using Equinox.
+ *
+ * @version $Rev$ $Date$
+ */
+public class EquinoxRuntime extends OSGiRuntime  {
+    
+    
+    private static BundleContext bundleContext;
+    
+    private static EquinoxRuntime instance;
+    
+    private static Class<?> eclipseStarterClass;
+    
+    public static OSGiRuntime getInstance() throws Exception {
+        if (instance == null) {
+            eclipseStarterClass = EquinoxRuntime.class.getClassLoader().loadClass("org.eclipse.core.runtime.adaptor.EclipseStarter");
+            EquinoxRuntime runtime = new EquinoxRuntime();
+            instance = runtime;
+        }
+        return instance;
+    }
+    
+    
+    protected BundleContext startRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception {
+        
+        if (bundleContext != null)
+            return bundleContext;
+                    
+        Method startupMethod = eclipseStarterClass.getMethod("startup", String [].class, Runnable.class);
+        
+        // Equinox version 3.2 upwards have a startup method which returns BundleContext
+        if (startupMethod.getReturnType() == BundleContext.class) {
+            bundleContext = (BundleContext) startupMethod.invoke(null, new String[] {"-clean", "-console"}, null );
+        }
+        else {
+            
+            // Older versions of Equinox don't have a public method to obtain system bundlecontext
+            // Extract bundleContext from the private field 'context'. We are assuming that 
+            // there is no access restriction
+            Method mainMethod = eclipseStarterClass.getMethod("main", String [].class);
+            mainMethod.invoke(null, (Object)new String[] {"-clean", "-console"});
+            
+            Field contextField = eclipseStarterClass.getDeclaredField("context");
+            contextField.setAccessible(true);
+            bundleContext = (BundleContext) contextField.get(null);
+            
+        }
+            
+        
+        return bundleContext;
+        
+    }
+
+    @Override
+    public BundleContext getBundleContext() {
+        return bundleContext;
+    }
+
+    @Override
+    protected void setBundleContext(BundleContext bundleContext) {
+        super.setBundleContext(bundleContext);
+        EquinoxRuntime.bundleContext = bundleContext;
+    }
+    
+    @Override
+    public void shutdown() throws Exception {
+
+        if (bundleContext == null)
+            return;
+        bundleContext = null;
+        instance = null;
+        if (eclipseStarterClass != null) {
+            Method shutdownMethod = eclipseStarterClass.getMethod("shutdown");
+            try {
+                shutdownMethod.invoke(eclipseStarterClass);
+            } catch (Exception e) {
+                // Ignore errors.
+            }
+        }
+        super.shutdown();
+    }
+
+
+    @Override
+    public boolean supportsBundleFragments() {
+        return false;
+    }
+    
+    
+
+}
diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/FelixRuntime.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/FelixRuntime.java
new file mode 100644
index 0000000000..54ba4c3e87
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/FelixRuntime.java
@@ -0,0 +1,252 @@
+/*
+ * 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.osgi.runtime;
+
+import java.io.File;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+/**
+ * Implementation of an OSGi Runtime using Felix.
+ *
+ * @version $Rev$ $Date$
+ */
+public class FelixRuntime extends OSGiRuntime implements BundleActivator {
+    
+    private static BundleContext bundleContext;
+    
+    private static FelixRuntime instance;
+    
+    private static Class<?> felixMainClass;
+    private static Class<?> felixClass;
+    private static Object felix;
+    
+    public static OSGiRuntime getInstance() throws Exception {
+        if (instance == null) {
+            felixMainClass = FelixRuntime.class.getClassLoader().loadClass("org.apache.felix.main.Main");
+            FelixRuntime runtime = new FelixRuntime();
+            instance = runtime;
+        }
+        return instance;
+    }
+    
+    
+    private static void deleteDirectory(File dir) {
+        
+        File[] files = dir.listFiles();
+        for (int i = 0; i < files.length; i++) {
+            if (files[i].isDirectory())
+                deleteDirectory(files[i]);
+            else
+                files[i].delete();
+        }
+        dir.delete();
+        
+    }
+    
+    protected BundleContext startRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception {
+        
+        if (bundleContext != null)
+            return bundleContext;
+        
+               
+        ClassLoader cl = FelixRuntime.class.getClassLoader();
+        
+        felixClass = cl.loadClass("org.apache.felix.framework.Felix");
+        Method propsMethod = felixMainClass.getMethod("loadConfigProperties");
+        Properties props = (Properties)propsMethod.invoke(null);
+        
+        String profileDirName = ".felix";
+        File targetDir = new File("target");
+        if (targetDir.exists() && targetDir.isDirectory())
+            profileDirName = "target/" + profileDirName;
+        File profileDir = new File(profileDirName);
+        if (profileDir.isDirectory()) 
+            deleteDirectory(profileDir);
+        else
+            profileDir.delete();
+        profileDir.mkdir();
+        profileDir.deleteOnExit();
+        
+        props.put("felix.cache.profiledir", profileDir.getAbsolutePath());
+        props.put("felix.embedded.execution", "true");
+
+        String systemPackages =
+                "org.osgi.framework; version=1.3.0," +
+                "org.osgi.service.packageadmin; version=1.2.0, " +
+                "org.osgi.service.startlevel; version=1.0.0, " +
+                "org.osgi.service.url; version=1.0.0, " +
+                "org.osgi.util.tracker; version=1.3.2, " +
+                "javax.xml, " +
+                "javax.xml.datatype, " +
+                "javax.xml.namespace, " +
+                "javax.xml.parsers, " +
+                "javax.xml.transform, " +
+                "javax.xml.transform.dom, " +
+                "javax.xml.transform.sax, " +
+                "javax.xml.transform.stream, " +
+                "javax.xml.validation, " +
+                "javax.xml.xpath, " +
+                "org.apache.xerces.jaxp.datatype, " +
+                "org.w3c.dom, " +
+                "org.xml.sax, " +
+                "org.xml.sax.ext, " +
+                "org.xml.sax.helpers, " +
+                "javax.security.auth, " +
+                "javax.naming, " +
+                "javax.naming.spi, " +
+                "javax.naming.directory, " +
+                "javax.management, " + 
+                "sun.misc";
+        
+        
+        if (!tuscanyRunningInOSGiContainer) {
+            systemPackages = systemPackages + ", org.osoa.sca.annotations, org.osoa.sca";
+            systemPackages = systemPackages + ", commonj.sdo, commonj.sdo.helper, org.apache.tuscany.sdo.helper, org.apache.tuscany.sdo.impl, org.apache.tuscany.sdo.model, org.apache.tuscany.sdo.model.impl";
+            systemPackages = systemPackages + ", org.eclipse.emf.ecore, org.eclipse.emf.ecore.util, org.eclipse.emf.ecore.impl";
+        }
+        props.put("org.osgi.framework.system.packages", systemPackages);
+        
+        try {
+            Constructor felixConstructor = felixClass.getConstructor(Map.class, List.class);
+            List<BundleActivator> activators = new ArrayList<BundleActivator>();
+
+            Class<?> autoActivatorClass = cl.loadClass("org.apache.felix.main.AutoActivator");
+            Constructor autoActivatorConstructor = autoActivatorClass.getConstructor(Map.class);
+            BundleActivator autoActivator = (BundleActivator)autoActivatorConstructor.newInstance(props);            
+            activators.add(autoActivator);
+
+            felix = felixConstructor.newInstance(props, activators);
+            ((Bundle)felix).start();
+            bundleContext = ((Bundle)felix).getBundleContext();
+            
+            
+        } catch (Exception e) {
+            
+            // This is the older Felix API which has been retained temporarily to avoid build break
+            // TODO: Remove these once Felix 1.0.0 is released.
+            
+            Class<?> propertyResolverClass = cl.loadClass("org.apache.felix.framework.util.MutablePropertyResolver");
+            Class<?> propertyResolverImplClass = cl.loadClass("org.apache.felix.framework.util.MutablePropertyResolverImpl");
+
+            Constructor implConstructor = propertyResolverImplClass.getConstructor(Map.class);
+            Object mutableProps = implConstructor.newInstance(props);
+            
+            
+            try {
+                Constructor felixConstructor = felixClass.getConstructor(propertyResolverClass, List.class);
+                List<BundleActivator> activators = new ArrayList<BundleActivator>();
+                felix = felixConstructor.newInstance(mutableProps, activators);
+                ((Bundle)felix).start();
+                bundleContext = ((Bundle)felix).getBundleContext();
+            } catch (Exception e1) {
+                
+        
+                felix = felixClass.newInstance();
+                Method startMethod = felixClass.getMethod("start", propertyResolverClass, List.class);
+                List<BundleActivator> activators = new ArrayList<BundleActivator>();
+                BundleActivator activator = new FelixRuntime();
+                activators.add(activator);
+                startMethod.invoke(felix, mutableProps, activators);
+        
+                synchronized (activator) {
+                    int retries = 0;
+                    while (bundleContext == null && retries++ < 10) {
+                        activator.wait(1000);
+                    }
+                }
+            }
+        }
+        
+        return bundleContext;
+        
+    }
+
+    public void start(BundleContext context) throws Exception {
+        
+        bundleContext = context;
+        synchronized (this) {
+            this.notify();
+        }
+    }
+
+    public void stop(BundleContext context) throws Exception {
+        bundleContext = null;
+    }
+    
+    
+    
+    @Override
+    public BundleContext getBundleContext() {
+        return bundleContext;
+    }
+
+    @Override
+    protected void setBundleContext(BundleContext bundleContext) {
+        super.setBundleContext(bundleContext);
+        FelixRuntime.bundleContext = bundleContext;
+    }
+
+
+    @Override
+    public void shutdown() throws Exception {
+
+        if (bundleContext == null)
+            return;
+        bundleContext = null;
+        instance = null;
+        
+        // We could potentially use Felix.stopAndWait, but use timed wait for now because
+        // stopAndWait hangs with Felix 1.0.0
+        if (felix instanceof Bundle) {
+            Bundle felixBundle = (Bundle)felix;
+            felixBundle.stop();
+            int retries = 50;
+            synchronized (felix) {
+                while (retries-- > 0 && felixBundle.getState() != Bundle.UNINSTALLED) {
+                    felix.wait(100);
+                }
+            }
+        }
+        else if (felix != null) {
+            Method shutdownMethod = felixClass.getMethod("shutdown");
+            try {
+                shutdownMethod.invoke(felix);
+            } catch (Exception e) {
+                // Ignore errors
+            }            
+            felix = null;
+        }
+        super.shutdown();
+    }
+    
+    @Override
+    public boolean supportsBundleFragments() {
+        return false;
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/KnopflerfishRuntime.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/KnopflerfishRuntime.java
new file mode 100644
index 0000000000..144c542a49
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/KnopflerfishRuntime.java
@@ -0,0 +1,167 @@
+/*
+ * 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.osgi.runtime;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.util.Hashtable;
+
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+
+/**
+ * Implementation of an OSGi Runtime using Knopflerfish.
+ *
+ * @version $Rev$ $Date$
+ */
+public class KnopflerfishRuntime extends OSGiRuntime  {
+    
+    private static BundleContext bundleContext;
+    
+    private static KnopflerfishRuntime instance;
+    
+
+    private static Class<?> frameworkClass;
+    
+    private static Object framework;
+    
+    public static OSGiRuntime getInstance() throws Exception {
+        if (instance == null) {
+            frameworkClass = KnopflerfishRuntime.class.getClassLoader().loadClass("org.knopflerfish.framework.Framework");
+            KnopflerfishRuntime runtime = new KnopflerfishRuntime();
+            instance = runtime;
+        }
+        return instance;
+    }
+    
+   
+
+    // FIXME: Knopflerfish does not expose the methods used for configuration as public methods
+    //        It may be worth using the private methods in org.knopflerfish.framework.Main for
+    //        configuring using reflection if security policies allow it.
+    //        For now, a simple configuration routine reads sca.xargs from the directory in 
+    //        the classpath which contains framework.jar. The entries in init.xargs starting with
+    //        -install are assumed to be single-line entries with full bundle location.
+    //
+    protected BundleContext startRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception {
+        
+        if (bundleContext != null)
+            return bundleContext;
+        
+        
+        
+        System.setProperty("org.knopflerfish.framework.bundlestorage", "memory");
+                    
+        Constructor frameworkConstructor = frameworkClass.getConstructor(Object.class);
+        framework = frameworkConstructor.newInstance(new KnopflerfishRuntime());
+        Method launchMethod = frameworkClass.getMethod("launch", long.class);
+        launchMethod.invoke(framework, 0);
+        Method getContextMethod = frameworkClass.getMethod("getSystemBundleContext");
+        bundleContext = (BundleContext)getContextMethod.invoke(framework);
+       
+        System.setProperty("com.gatespace.bundle.cm.store", "knopflerfish.store");
+        File xargsFile = null;
+        String classpath = System.getProperty("java.class.path");
+        String[] classpathEntries = classpath.split(System.getProperty("path.separator"));
+        for (int i = 0; i < classpathEntries.length; i++) {
+            if (classpathEntries[i].endsWith("framework.jar")) {
+                String path = classpathEntries[i].substring(0, classpathEntries[i].length() - "framework.jar".length());
+                path = path + "sca.xargs";
+                xargsFile = new File(path);
+                if (!xargsFile.exists())
+                    xargsFile = null;
+                break;
+            }
+        }
+        if (xargsFile != null) {
+            BufferedReader reader = new BufferedReader(new FileReader(xargsFile));
+            String line;
+            Hashtable<String, Bundle> bundles = new Hashtable<String, Bundle>();
+            while ((line = reader.readLine()) != null) {
+                line = line.trim();
+                if (line.startsWith("-install")) {
+                    try {
+
+                        String bundleLocation = line.substring("-install".length()).trim();
+                        Bundle bundle = bundleContext.installBundle(bundleLocation);
+                        bundles.put(bundleLocation, bundle);
+                        
+                    } catch (BundleException e) {
+                        e.printStackTrace();
+                    }
+                    
+                }
+                if (line.startsWith("-start")) {
+
+                    try {
+                        String bundleLocation = line.substring("-start".length()).trim();
+                        Bundle bundle = bundles.get(bundleLocation);
+                        bundle.start();
+                    } catch (BundleException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        
+        
+        return bundleContext;
+        
+    }
+    
+    @Override
+    public BundleContext getBundleContext() {
+        return bundleContext;
+    }
+    
+    @Override
+    protected void setBundleContext(BundleContext bundleContext) {
+        super.setBundleContext(bundleContext);
+        KnopflerfishRuntime.bundleContext = bundleContext;
+    }
+
+    @Override
+    public void shutdown() throws Exception {
+
+        if (bundleContext == null)
+            return;
+        bundleContext = null;
+        instance = null;
+        if (framework != null) {
+            Method shutdownMethod = frameworkClass.getMethod("shutdown");
+            try {
+                shutdownMethod.invoke(framework);
+            } catch (Exception e) {
+                // Ignore errors
+            }
+            framework = null;
+        }
+        super.shutdown();
+        
+    }
+    
+    @Override
+    public boolean supportsBundleFragments() {
+        return true;
+    }
+}
diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiBundleActivator.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiBundleActivator.java
new file mode 100644
index 0000000000..509f3787ac
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiBundleActivator.java
@@ -0,0 +1,258 @@
+/*

+ * 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.osgi.runtime;

+

+import java.io.IOException;

+import java.net.URL;

+import java.util.Collections;

+import java.util.Enumeration;

+import java.util.HashSet;

+import java.util.concurrent.ConcurrentHashMap;

+

+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;

+import org.osgi.framework.Bundle;

+import org.osgi.framework.BundleActivator;

+import org.osgi.framework.BundleContext;

+import org.osgi.framework.BundleEvent;

+import org.osgi.framework.BundleListener;

+

+/**

+ * OSGi bundle activator, which is run when Tuscany is run inside an OSGi runtime.

+ *

+ * @version $Rev$ $Date$

+ */

+public class OSGiBundleActivator implements BundleActivator, BundleListener {

+	

+	private static final String TUSCANY_SCA_BUNDLE_PREFIX = "org.apache.tuscany.sca";

+	private static final String TUSCANY_3RD_PARTY_BUNDLE_PREFIX = "org.apache.tuscany.sca.3rdparty";

+	private OSGiRuntime runtime;

+    private ConcurrentHashMap<Bundle, ClassLoader> serviceDiscoveryClassLoaders = new ConcurrentHashMap<Bundle, ClassLoader>();

+	private BundleClassLoader threadContextClassLoader;

+	private ClassLoader origTCCL;

+	private Bundle thisBundle;

+

+	public void start(BundleContext bundleContext) throws Exception {

+		

+		initializeTuscanyClassLoaders(bundleContext);

+		

+		runtime = OSGiRuntime.findRuntime();

+		runtime.setBundleContext(bundleContext);

+        runtime.setContextClassLoader(threadContextClassLoader);

+		runtime.initialize();

+		

+	}

+

+	public void stop(BundleContext bundleContext) throws Exception {

+		

+        // runtime.shutdown();

+

+        if (Thread.currentThread().getContextClassLoader() == threadContextClassLoader)

+            Thread.currentThread().setContextClassLoader(origTCCL);       

+	}

+	

+	/**

+	 * Create a bundle ClassLoader which has visibility of all Tuscany related

+	 * bundles. Use this ClassLoader as TCCL, and the Tuscany service discovery

+	 * ClassLoader.

+	 * 

+	 * @param bundleContext

+	 */

+	private void initializeTuscanyClassLoaders(BundleContext bundleContext) {

+		

+		thisBundle = bundleContext.getBundle();

+

+		origTCCL = Thread.currentThread().getContextClassLoader();

+        

+		threadContextClassLoader = new BundleClassLoader(thisBundle, origTCCL);

+		

+		Thread.currentThread().setContextClassLoader(threadContextClassLoader);

+		

+        ClassLoader cl = new BundleClassLoader(thisBundle, null);

+        ServiceDiscovery.getInstance().registerClassLoader(cl);

+        serviceDiscoveryClassLoaders.put(thisBundle, cl);

+

+		Bundle[] bundles = bundleContext.getBundles();

+		for (Bundle bundle : bundles) {

+			updateBundleClassLoader(bundle);

+		}

+		bundleContext.addBundleListener(this);

+		

+	}

+	

+	/**

+	 * Add an installed bundle to the list of bundles in the service discovery classpath

+	 * if the installed bundle is a Tuscany bundle using the same Core-SPI bundle.

+	 * Since the bundle containing this activator is in Tuscany Runtime, this bundle

+	 * will provide access to Runtime and its dependencies (SPI, SCA-API). Third party

+	 * bundles don't need to be in the service discovery classpath, since they will be automatically

+	 * imported by bundles which require them. That leaves Tuscany extension bundles,

+	 * which are added to the service discovery classpath here.

+	 * 

+	 * 3rd party bundle should be explicitly added to TCCL since classes from these

+	 * bundles use TCCL to load other classes from the bundle.

+	 * 

+	 * Load one class from the bundle to check if the new bundle matches this runtime bundle.

+	 * 

+	 * @param bundle

+	 */

+	private void updateBundleClassLoader(Bundle bundle) {

+		

+		if (bundle.getSymbolicName().startsWith(TUSCANY_SCA_BUNDLE_PREFIX)) {

+			

+

+			// This may be the third party bundle.

+		    if (bundle.getSymbolicName().startsWith(TUSCANY_3RD_PARTY_BUNDLE_PREFIX)) {

+											

+                threadContextClassLoader.addBundle(bundle);	

+			} 

+		    else {

+			

+                String thisBundleVersion = (String)thisBundle.getHeaders().get("Bundle-Version");

+                String bundleVersion = (String)bundle.getHeaders().get("Bundle-Version");

+			    

+                if (thisBundleVersion == null || bundleVersion == null || thisBundleVersion.equals(bundleVersion)) {

+					

+                    if (!threadContextClassLoader.bundles.contains(bundle)) {

+                        ClassLoader cl = new BundleClassLoader(bundle, null);

+                        ServiceDiscovery.getInstance().registerClassLoader(cl);

+                        serviceDiscoveryClassLoaders.put(bundle, cl);

+				        threadContextClassLoader.addBundle(bundle);

+                    }

+                }

+		    }

+		} else {

+            threadContextClassLoader.addBundle(bundle); 

+        }

+	}

+

+

+	/**

+	 * Handle bundle install/uninstall events 

+	 */

+	public void bundleChanged(BundleEvent event) {

+		

+		Bundle bundle = event.getBundle();

+		if (event.getType() == BundleEvent.UNINSTALLED) {

+            ClassLoader cl = serviceDiscoveryClassLoaders.get(bundle);

+            if (cl != null) {

+                ServiceDiscovery.getInstance().unregisterClassLoader(cl);

+            }

+			threadContextClassLoader.removeBundle(bundle);

+		}

+		else if (event.getType() == BundleEvent.INSTALLED) {

+			updateBundleClassLoader(bundle);

+		}

+	}

+

+

+

+

+	/**

+	 * Bundle ClassLoader that searches a bundle classpath consisting of

+	 * a list of bundles. The parent ClassLoader is searched only if a class

+	 * cannot be loaded from the bundle classpath. Tuscany bundles are

+	 * dynamically added and removed from the bundle classpath when the bundles

+	 * are installed and uninstalled.

+	 * 

+	 * No ordering of bundles is maintained at the moment.

+	 *

+	 */

+	private static class BundleClassLoader extends ClassLoader {

+		

+		private HashSet<Bundle> bundles;

+		

+		BundleClassLoader(Bundle bundle, ClassLoader parent) {

+			super(parent);

+			this.bundles = new HashSet<Bundle>();

+			bundles.add(bundle);

+		}

+		

+		private synchronized void addBundle(Bundle bundle) {

+			bundles.add(bundle);

+		}

+		

+		private synchronized void removeBundle(Bundle bundle) {

+			if (bundles.contains(bundle))

+			    bundles.remove(bundle);

+		}

+		

+        

+		@Override

+        protected Class<?> findClass(String className) throws ClassNotFoundException {

+            Class<?> clazz = null;

+            synchronized (this) {

+                for (Bundle bundle : bundles) {

+                    try {

+                        clazz = bundle.loadClass(className);

+                        break;

+                    } catch (ClassNotFoundException e) {

+                    } catch (NoClassDefFoundError e) {

+                    }

+

+                }

+            }           

+            if (clazz != null) {

+                return clazz;

+            }

+            return super.findClass(className);

+        }

+

+

+		@Override

+		@SuppressWarnings("unchecked")

+		public Enumeration<URL> getResources(String resName) throws IOException {

+			HashSet<URL> urlSet = new HashSet<URL>();

+			Enumeration<URL> urls = null;

+			synchronized (this) {

+				for (Bundle bundle : bundles) {

+					urls = bundle.getResources(resName);

+					if (urls != null) {

+						while (urls.hasMoreElements()) {

+							urlSet.add(urls.nextElement());

+						}

+					}

+				}

+			}			

+			if (urlSet.size() > 0)

+				return Collections.enumeration(urlSet);

+			return super.getResources(resName);

+		}

+

+		@Override

+		public URL getResource(String resName) {

+			URL url = null;

+			synchronized (this) {

+				for (Bundle bundle : bundles) {

+					url = bundle.getResource(resName);

+					if (url != null)

+						return url;

+				}

+			}			

+			return super.getResource(resName);

+		}

+

+		@Override

+		public String toString() {

+			return "Tuscany BundleClassLoader " + bundles.iterator().next();

+	    }

+		

+		

+		

+	}

+}

diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java
new file mode 100644
index 0000000000..79b1c0a5f4
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java
@@ -0,0 +1,275 @@
+/*
+ * 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.osgi.runtime;
+
+import java.io.InputStream;
+import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+import org.osgi.service.packageadmin.PackageAdmin;
+
+/**
+ * Base OSGiRuntime implementation.
+ * 
+ * @version $Rev$ $Date$
+ */
+public abstract class OSGiRuntime {
+    private static final Logger logger = Logger.getLogger(OSGiRuntime.class.getName());
+
+    public abstract BundleContext getBundleContext();
+
+    public abstract boolean supportsBundleFragments();
+    
+    protected abstract BundleContext startRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception;
+       
+    private static OSGiRuntime instance;
+    
+    private BundleContext bundleContext;
+    
+    private PackageAdmin packageAdmin;
+    
+    private boolean tuscanyRunningInOSGiContainer;
+    
+    private ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
+    
+    /**
+     * System property org.apache.tuscany.implementation.osgi.runtime.OSGiRuntime can be set to the
+     * name of the OSGiRuntime class (eg. EquinoxRuntime). If set, start this runtime and return the
+     * system bundlecontext. If not set, start Equinox/Felix/Knopflerfish (in that order) from the
+     * classpath.
+     * 
+     * @throws BundleException
+     */
+    public static synchronized OSGiRuntime findRuntime() throws Exception {
+
+        if (instance != null) {
+        	
+            return instance;
+        }
+        String runtimeClassName = System.getProperty(OSGiRuntime.class.getName());
+        
+
+        if (runtimeClassName != null) {
+            try {
+                Class<?> runtimeClass = OSGiRuntime.class.getClassLoader().loadClass(runtimeClassName);
+                Method method = runtimeClass.getMethod("getInstance");
+                instance = (OSGiRuntime) method.invoke(null);
+                return instance;
+                
+            } catch (Exception e) {
+                throw new BundleException("Could not start OSGi runtime " + runtimeClassName, e);
+            }
+        }
+
+        try {
+            
+            instance = EquinoxRuntime.getInstance();
+            return instance;
+            
+        } catch (ClassNotFoundException e) {
+            // Ignore
+        } catch (Throwable e) {
+            logger.log(Level.SEVERE, e.getMessage(), e);
+        }
+
+        try {
+
+            instance = FelixRuntime.getInstance();
+            return instance;
+ 
+        } catch (ClassNotFoundException e) {
+            // Ignore
+        } catch (Throwable e) {
+            logger.log(Level.SEVERE, e.getMessage(), e);
+        }
+
+        try {
+       
+            instance = KnopflerfishRuntime.getInstance();
+            return instance;
+            
+        } catch (ClassNotFoundException e) {
+            // Ignore
+        } catch (Throwable e) {
+            logger.log(Level.SEVERE, e.getMessage(), e);
+        }
+
+        throw new BundleException("Could not start OSGi runtime from the classpath");
+    }
+
+
+    public static synchronized OSGiRuntime getRuntime() throws Exception {
+    	return getRuntime(false);
+    }
+
+    public static synchronized OSGiRuntime getRuntime(boolean tuscanyRunningInOSGiContainer) throws Exception {
+    	
+    	instance = findRuntime();
+    	
+        if (instance != null) {
+        	
+        	if (instance.bundleContext == null) {
+                instance.tuscanyRunningInOSGiContainer = tuscanyRunningInOSGiContainer;
+        		instance.startRuntime(tuscanyRunningInOSGiContainer);
+        		instance.initialize();
+        	}
+            return instance;
+        }
+        return instance;
+    }
+
+
+    public void shutdown() throws Exception {
+    	
+    	bundleContext = null;
+    	packageAdmin = null;
+    }
+
+    protected void setBundleContext(BundleContext bundleContext) {
+        instance.tuscanyRunningInOSGiContainer = true;
+        this.bundleContext = bundleContext;
+    }
+    
+    
+    
+    public ClassLoader getContextClassLoader() {
+        return contextClassLoader;
+    }
+
+    protected void setContextClassLoader(ClassLoader contextClassLoader) {
+        this.contextClassLoader = contextClassLoader;
+    }
+
+    protected void initialize() {
+    	
+        bundleContext = getBundleContext();
+
+        if (bundleContext != null) {
+
+            org.osgi.framework.ServiceReference packageAdminReference =
+                bundleContext.getServiceReference("org.osgi.service.packageadmin.PackageAdmin");
+            if (packageAdminReference != null) {
+
+                packageAdmin = (PackageAdmin)bundleContext.getService(packageAdminReference);
+            }
+        }
+
+    }
+
+    public Bundle findBundle(String bundleSymbolicName, String bundleVersion) {
+
+        if (bundleContext != null) {
+            Bundle[] installedBundles = bundleContext.getBundles();
+            for (Bundle bundle : installedBundles) {
+                if (bundleSymbolicName.equals(bundle.getSymbolicName()) && (bundleVersion == null || bundleVersion
+                    .equals(bundle.getHeaders().get("Bundle-Version"))))
+                    return bundle;
+            }
+
+        }
+        return null;
+    }
+    
+    public static synchronized Bundle findInstalledBundle(String bundleLocation) {
+    	if (instance != null) {
+            if (bundleLocation.startsWith("bundle:")||bundleLocation.startsWith("bundleresource:")) {
+                try {
+                    return findInstalledBundle(new URL(bundleLocation));
+                } catch (MalformedURLException e) {
+                    // ignore
+                }
+            } else {
+                return instance.findBundle(bundleLocation);
+            }
+    	}
+    	return null;
+    }
+    
+    public static synchronized Bundle findInstalledBundle(URL bundleURL) {
+        if (instance != null) {
+            if (instance.bundleContext != null) {
+                Bundle[] installedBundles = instance.bundleContext.getBundles();
+                for (Bundle bundle : installedBundles) {
+                    try {
+                        if (bundle.getEntry("/").getHost().equals(bundleURL.getHost()))
+                        return bundle;
+                    } catch (Exception e) {
+                        // Ignore exception
+                    }
+                }
+            }
+            return null;
+        }
+        return null;
+    }
+
+    public Bundle findBundle(String bundleLocation) {
+
+        if (bundleContext != null) {        	
+            Bundle[] installedBundles = bundleContext.getBundles();
+            for (Bundle bundle : installedBundles) {
+                if (bundle.getLocation().equals(bundleLocation))
+                    return bundle;
+            }
+
+        }
+        return null;
+    }
+
+    public Bundle installBundle(String bundleLocation, InputStream inputStream) {
+
+        try {
+            if (bundleContext != null) {
+                Bundle bundle = findBundle(bundleLocation);
+                if (bundle != null)
+                    return bundle;
+                if (inputStream == null)
+                    bundle = bundleContext.installBundle(bundleLocation);
+                else
+                    bundle = bundleContext.installBundle(bundleLocation, inputStream);
+
+                if (bundle != null && packageAdmin != null)
+                    packageAdmin.refreshPackages(null);
+
+                return bundle;
+            }
+        } catch (BundleException e) {
+        }
+        return null;
+    }
+
+    /**
+     * Stops the OSGi instance.
+     *
+     * @throws Exception Failed to shutdown the OSGi instance.
+     */
+    public static synchronized void stop() throws Exception {
+        if (instance != null && !instance.tuscanyRunningInOSGiContainer) {
+            instance.shutdown();
+            instance = null;
+        }
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntimeModuleActivator.java b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntimeModuleActivator.java
new file mode 100644
index 0000000000..1dbe75f431
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntimeModuleActivator.java
@@ -0,0 +1,47 @@
+/*
+ * 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.osgi.runtime;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ModuleActivator;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class OSGiRuntimeModuleActivator implements ModuleActivator {
+
+    /**
+     * @see org.apache.tuscany.sca.core.ModuleActivator#start(org.apache.tuscany.sca.core.ExtensionPointRegistry)
+     */
+    public void start(ExtensionPointRegistry registry) {
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.core.ModuleActivator#stop(org.apache.tuscany.sca.core.ExtensionPointRegistry)
+     */
+    public void stop(ExtensionPointRegistry registry) {
+        try {
+            OSGiRuntime.stop();
+        } catch (Throwable e) {
+            // Ignore the exception
+        }
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator
new file mode 100644
index 0000000000..88b8f1e021
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/osgi-runtime/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator
@@ -0,0 +1,36 @@
+# 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.

+# Implementation class for the ModuleActivator

+org.apache.tuscany.sca.osgi.runtime.OSGiRuntimeModuleActivator

+# 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.

+# Implementation class for the ModuleActivator

+org.apache.tuscany.sca.osgi.runtime.OSGiRuntimeModuleActivator