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Diffstat (limited to '')
3 files changed, 291 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorActivator.java b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorActivator.java new file mode 100644 index 0000000000..6228afcd53 --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorActivator.java @@ -0,0 +1,78 @@ +/* + * 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 calculator.dosgi.impl; + +import java.util.Dictionary; +import java.util.Hashtable; +import java.util.logging.Logger; + +import org.osgi.framework.Bundle; +import org.osgi.framework.BundleActivator; +import org.osgi.framework.BundleContext; +import org.osgi.framework.ServiceReference; +import org.osgi.service.packageadmin.PackageAdmin; + +import calculator.dosgi.CalculatorService; +import calculator.dosgi.operations.AddService; + +/** + * + */ +public class CalculatorActivator implements BundleActivator { + private Logger logger = Logger.getLogger(CalculatorActivator.class.getName()); + + private Bundle getBundle(BundleContext bundleContext, Class<?> cls) { + PackageAdmin packageAdmin = null; + // PackageAdmin is used to resolve bundles + ServiceReference ref = bundleContext.getServiceReference("org.osgi.service.packageadmin.PackageAdmin"); + if (ref != null) { + packageAdmin = (PackageAdmin)bundleContext.getService(ref); + Bundle bundle = packageAdmin.getBundle(cls); + if (bundle != null) { + logger.info(cls.getName() + " is loaded by bundle: " + bundle.getSymbolicName()); + } + bundleContext.ungetService(ref); + return bundle; + } + return null; + } + + public void start(BundleContext context) throws Exception { + logger.info("Starting " + context.getBundle()); + Dictionary<String, Object> props = new Hashtable<String, Object>(); + props.put("sca.service", "CalculatorComponent#service-name(Calculator)"); + props.put("calculator", "Calculator"); + props.put("service.exported.configs", new String[] {"org.osgi.sca"}); + props.put("org.osgi.sca.bindings", new String[] {"{http://sample}Calculator"}); + props.put("service.exported.interfaces", new String[] {"*"}); + logger.info("Registering " + CalculatorService.class.getName()); + CalculatorService calculator = new CalculatorServiceImpl(context); + context.registerService(CalculatorService.class.getName(), calculator, props); + + getBundle(context, AddService.class); + + } + + public void stop(BundleContext context) throws Exception { + logger.info("Stopping " + context.getBundle()); + // Registered services will be automatically unregistered + } + +} diff --git a/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java new file mode 100644 index 0000000000..5f9db16ca9 --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java @@ -0,0 +1,114 @@ +/* + * 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 calculator.dosgi.impl; + +import org.osgi.service.component.ComponentContext; + +import calculator.dosgi.CalculatorService; +import calculator.dosgi.operations.AddService; +import calculator.dosgi.operations.DivideService; +import calculator.dosgi.operations.MultiplyService; +import calculator.dosgi.operations.SubtractService; + +/** + * An implementation of the Calculator service. + */ +public class CalculatorServiceDSImpl implements CalculatorService { + private AddService addService; + private SubtractService subtractService; + private MultiplyService multiplyService; + private DivideService divideService; + + public CalculatorServiceDSImpl() { + super(); + System.out.println("CalculatorServiceDSImpl()"); + } + + protected void activate(ComponentContext context) { + System.out.println("Activating " + context); + } + + protected void deactivate(ComponentContext context) { + System.out.println("Deactivating " + context); + } + + /* + * The following setters can be used for DS injection + */ + public void setAddService(AddService addService) { + System.out.println("setAddService()"); + this.addService = addService; + } + + public void setSubtractService(SubtractService subtractService) { + this.subtractService = subtractService; + } + + public void setDivideService(DivideService divideService) { + this.divideService = divideService; + } + + public void setMultiplyService(MultiplyService multiplyService) { + this.multiplyService = multiplyService; + } + + /* + * The following setters can be used for DS injection + */ + public void unsetAddService(AddService addService) { + System.out.println("unsetAddService()"); + this.addService = null; + } + + public void unsetSubtractService(SubtractService subtractService) { + this.subtractService = null; + } + + public void unsetDivideService(DivideService divideService) { + this.divideService = null; + } + + public void unsetMultiplyService(MultiplyService multiplyService) { + this.multiplyService = null; + } + private <T> T getService(Class<T> cls) { + for (Object s : new Object[] {addService, subtractService, multiplyService, divideService}) { + if (cls.isInstance(s)) { + return cls.cast(s); + } + } + throw new IllegalStateException(cls.getSimpleName() + " is not available"); + } + + public double add(double n1, double n2) { + return getService(AddService.class).add(n1, n2); + } + + public double subtract(double n1, double n2) { + return getService(SubtractService.class).subtract(n1, n2); + } + + public double multiply(double n1, double n2) { + return getService(MultiplyService.class).multiply(n1, n2); + } + + public double divide(double n1, double n2) { + return getService(DivideService.class).divide(n1, n2); + } +} diff --git a/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java new file mode 100644 index 0000000000..aa09b27139 --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5.1/samples/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java @@ -0,0 +1,99 @@ +/* + * 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 calculator.dosgi.impl; + +import static org.osgi.framework.Constants.OBJECTCLASS; + +import java.util.HashMap; +import java.util.Map; + +import org.osgi.framework.BundleContext; +import org.osgi.framework.Filter; +import org.osgi.framework.InvalidSyntaxException; +import org.osgi.util.tracker.ServiceTracker; + +import calculator.dosgi.CalculatorService; +import calculator.dosgi.operations.AddService; +import calculator.dosgi.operations.DivideService; +import calculator.dosgi.operations.MultiplyService; +import calculator.dosgi.operations.SubtractService; + +/** + * An implementation of the Calculator service. + */ +public class CalculatorServiceImpl implements CalculatorService { + private Map<Class<?>, ServiceTracker> remoteServices = new HashMap<Class<?>, ServiceTracker>(); + + public CalculatorServiceImpl() { + super(); + } + + public CalculatorServiceImpl(BundleContext context) { + super(); + for (Class<?> cls : new Class<?>[] {AddService.class, SubtractService.class, MultiplyService.class, + DivideService.class}) { + Filter remoteFilter = null; + try { + remoteFilter = + context.createFilter("(&(" + OBJECTCLASS + "=" + cls.getName() + ") (service.imported=*))"); + } catch (InvalidSyntaxException e) { + e.printStackTrace(); + } + ServiceTracker tracker = new ServiceTracker(context, remoteFilter, null); + this.remoteServices.put(cls, tracker); + tracker.open(); + } + } + + private <T> T getService(Class<T> cls) { + ServiceTracker tracker = remoteServices.get(cls); + try { + // Wait for 10 seconds until the remote services are imported + tracker.waitForService(10000); + } catch (InterruptedException e) { + throw new IllegalStateException(cls.getSimpleName() + " is not available"); + } + Object[] remoteObjects = tracker.getServices(); + if (remoteObjects != null) { + for (Object s : remoteObjects) { + if (cls.isInstance(s)) { + System.out.println("Remote service: " + s); + return cls.cast(s); + } + } + } + throw new IllegalStateException(cls.getSimpleName() + " is not available"); + } + + public double add(double n1, double n2) { + return getService(AddService.class).add(n1, n2); + } + + public double subtract(double n1, double n2) { + return getService(SubtractService.class).subtract(n1, n2); + } + + public double multiply(double n1, double n2) { + return getService(MultiplyService.class).multiply(n1, n2); + } + + public double divide(double n1, double n2) { + return getService(DivideService.class).divide(n1, n2); + } +} |