From b771a05508db61cb1748d2fed0eb92daf173ff92 Mon Sep 17 00:00:00 2001 From: rsivaram Date: Thu, 16 Oct 2008 11:51:49 +0000 Subject: Copy modules for event prototype git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@705212 13f79535-47bb-0310-9956-ffa450edef68 --- .../tuscany/sca/osgi/runtime/OSGiRuntime.java | 275 +++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 sandbox/event/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java (limited to 'sandbox/event/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java') diff --git a/sandbox/event/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java b/sandbox/event/modules/osgi-runtime/src/main/java/org/apache/tuscany/sca/osgi/runtime/OSGiRuntime.java new file mode 100644 index 0000000000..79b1c0a5f4 --- /dev/null +++ b/sandbox/event/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; + } + } + +} -- cgit v1.2.3