diff options
Diffstat (limited to 'sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util')
2 files changed, 157 insertions, 0 deletions
diff --git a/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/BundleContextUtil.java b/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/BundleContextUtil.java new file mode 100755 index 0000000000..02549a59fd --- /dev/null +++ b/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/BundleContextUtil.java @@ -0,0 +1,93 @@ +/* + * 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.osgi.util; + +import java.util.Dictionary; + +import org.osgi.framework.BundleContext; +import org.osgi.framework.InvalidSyntaxException; +import org.osgi.framework.ServiceListener; +import org.osgi.framework.ServiceReference; +import org.osgi.framework.ServiceRegistration; + +public final class BundleContextUtil { + + private static BundleContext context; + private static final ServiceReference EMPTY_REFERENCE_ARRAY[] = {}; + + private BundleContextUtil() { + } + + public static void setContext(BundleContext ctx) { + context = ctx; + } + + public static ServiceReference[] getServiceReference(String clazz, String filter) throws InvalidSyntaxException { + ServiceReference[] references; + references = context.getServiceReferences(clazz, filter); + if (references == null) { + references = EMPTY_REFERENCE_ARRAY; + } + return references; + } + + public static Object getService(ServiceReference reference) { + return context.getService(reference); + } + + public static Object getService(ServiceReference references[]) { + if (references == null) { + return null; + } + return context.getService(references[0]); + } + + public static void addServiceListener(ServiceListener listener, String filter) { + try { + if (filter != null) { + context.addServiceListener(listener, filter); + } else { + context.addServiceListener(listener); + } + } catch (InvalidSyntaxException e) { + //FIXME + // TODO Auto-generated catch block + e.printStackTrace(); + } + } + + public static void removeServiceListener(ServiceListener listener) { + context.removeServiceListener(listener); + } + + public static ServiceRegistration registerService(String serviceName, + Object serviceFactory, + Dictionary properties) { + return context.registerService(serviceName, serviceFactory, properties); + } + + public static boolean trackServiceReference(String filter, ServiceListener listener) { + try { + context.addServiceListener(listener, filter); + return true; + } catch (InvalidSyntaxException e) { + return false; + } + } +} diff --git a/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/ClassloaderHook.java b/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/ClassloaderHook.java new file mode 100644 index 0000000000..33f7706c3e --- /dev/null +++ b/sandbox/old/contrib/binding-osgi/src/main/java/org/apache/tuscany/osgi/util/ClassloaderHook.java @@ -0,0 +1,64 @@ +package org.apache.tuscany.osgi.util; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.security.AccessController; +import java.security.PrivilegedAction; + +import org.osgi.framework.Bundle; + +public class ClassloaderHook { + + /** + * Return the BundleContext Classloader for the specified bundle. + * + * @param bundle The bundle whose BundleContext is desired. + * @return The BundleContext classloader for the specified bundle. + */ + ClassLoader getClassLoader(final Bundle bundle) { + if (System.getSecurityManager() == null) { + Object bundleLoader = invokeMethod(bundle, "checkLoader", null, null); + return (ClassLoader) invokeMethod(bundleLoader, "createClassLoader", null, null); + } + return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() { + public ClassLoader run() { + Object bundleLoader = invokeMethod(bundle, "checkLoader", null, null); + return (ClassLoader) invokeMethod(bundleLoader, "createClassLoader", null, null); + } + }); + } + + /** + * Throws an IllegalStateException if the reflection logic cannot find what it is looking for. This probably means + * this class does not properly recognize the framework implementation. + * + * @param e Exception which indicates the reflection logic is confused. + */ + protected void reflectionException(Exception e) { + throw new IllegalStateException( + "ClassLoaderHook does not recognize the framework implementation: " + e.getMessage()); + } + + private Object invokeMethod(Object target, String methodName, Class[] parms, Object[] args) { + Method method; + try { + method = target.getClass().getMethod(methodName, parms); + if (method != null) { + return method.invoke(target, parms, args); + } + } catch (SecurityException e) { + reflectionException(e); + } catch (NoSuchMethodException e) { + reflectionException(e); + } catch (IllegalArgumentException e) { + reflectionException(e); + } catch (IllegalAccessException e) { + reflectionException(e); + } catch (InvocationTargetException e) { + reflectionException(e); + } + return null; + } + + +} |