Author: matthijsh Date: Tue Jan 31 11:53:16 2012 New Revision: 2034 Log: AMDATU-264 Deprecate and purge generic utilities library
Added: trunk/amdatu-libraries/osgisupport/ trunk/amdatu-libraries/osgisupport/pom.xml trunk/amdatu-libraries/osgisupport/src/ trunk/amdatu-libraries/osgisupport/src/main/ trunk/amdatu-libraries/osgisupport/src/main/java/ trunk/amdatu-libraries/osgisupport/src/main/java/org/ trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/ trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/libraries/ trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/libraries/osgi/ trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/libraries/osgi/ServiceDependentActivator.java Modified: trunk/amdatu-libraries/pom.xml trunk/amdatu-libraries/utilities/ Added: trunk/amdatu-libraries/osgisupport/pom.xml ============================================================================== --- (empty file) +++ trunk/amdatu-libraries/osgisupport/pom.xml Tue Jan 31 11:53:16 2012 @@ -0,0 +1,29 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!-- + Copyright (c) 2010, 2011 The Amdatu Foundation + + Licensed 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.verning permissions and limitations + under the License. +--> +<project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd";> + <modelVersion>4.0.0</modelVersion> + <parent> + <groupId>org.amdatu.libraries</groupId> + <artifactId>org.amdatu.libraries</artifactId> + <version>0.3.0-SNAPSHOT</version> + </parent> + <artifactId>org.amdatu.libraries.osgi</artifactId> + <packaging>jar</packaging> + <name>Amdatu Libraries - OSGI support</name> + <description>Contains the supporting class ServiceDependentActivator</description> +</project> Added: trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/libraries/osgi/ServiceDependentActivator.java ============================================================================== --- (empty file) +++ trunk/amdatu-libraries/osgisupport/src/main/java/org/amdatu/libraries/osgi/ServiceDependentActivator.java Tue Jan 31 11:53:16 2012 @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2010, 2011 The Amdatu Foundation + * + * Licensed 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.amdatu.libraries.osgi; + +import java.util.concurrent.atomic.AtomicBoolean; + +import org.apache.felix.dm.Component; +import org.apache.felix.dm.DependencyActivatorBase; +import org.apache.felix.dm.DependencyManager; +import org.osgi.framework.BundleContext; + +/** + * Helper class to create an activator that needs other services to be 'up' before the rest + * of the activator is executed. + * The most prominent use case for this activator is the use of 'marker' interface that state + * the availability of some non-OSGi service. + */ +public abstract class ServiceDependentActivator extends DependencyActivatorBase { + @Override + public final void init(BundleContext context, DependencyManager manager) throws Exception { + Object watcher = new SpiWatcher(); + + Component spiWatcherComponent = createComponent().setImplementation(watcher); + for (Class<?> spiService : getRequiredServices()) { + spiWatcherComponent.add(createServiceDependency().setService(spiService).setRequired(true)); + } + + manager.add(spiWatcherComponent); + } + + /** + * Gets an array of all services that should be 'up' before the rest of activator is started. + * Once the rest of the activator is started, you will not have access to these services by default. + */ + protected abstract Class<?>[] getRequiredServices(); + + public abstract void initWithDependencies(BundleContext context, DependencyManager manager) throws Exception; + + private class SpiWatcher { + private volatile DependencyManager m_dependencyManager; + private volatile BundleContext m_bundleContext; + private AtomicBoolean m_started = new AtomicBoolean(false); + + @SuppressWarnings("unused") + public void start() throws Exception { + if (m_started.compareAndSet(false, true)) { + initWithDependencies(m_bundleContext, m_dependencyManager); + } + } + } +} Modified: trunk/amdatu-libraries/pom.xml ============================================================================== --- trunk/amdatu-libraries/pom.xml (original) +++ trunk/amdatu-libraries/pom.xml Tue Jan 31 11:53:16 2012 @@ -40,7 +40,7 @@ </repositories> <modules> - <module>utilities</module> + <module>osgisupport</module> <module>fsstorage</module> <module>warsupport</module> </modules> _______________________________________________ Amdatu-commits mailing list [email protected] http://lists.amdatu.org/mailman/listinfo/amdatu-commits
