Add the support for dynamic OSGi remote service import and export based on OSGi properties

Add two samples to demonstrate the OSGi property driven remote services

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@797580 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 366 insertions, 0 deletions

diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/AddService.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/AddService.java
new file mode 100644
index 0000000000..971500782f
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/AddService.java
@@ -0,0 +1,31 @@
+/*
+ * 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.operations;
+
+import org.oasisopen.sca.annotation.Remotable;
+
+/**
+ * The interface for the add service
+ */
+@Remotable
+public interface AddService {
+
+    double add(double n1, double n2);
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/DivideService.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/DivideService.java
new file mode 100644
index 0000000000..49b8a1c0bf
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/DivideService.java
@@ -0,0 +1,31 @@
+/*
+ * 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.operations;
+
+import org.oasisopen.sca.annotation.Remotable;
+
+/**
+ * The interface for the divide service
+ */
+@Remotable
+public interface DivideService {
+
+    double divide(double n1, double n2);
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/MultiplyService.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/MultiplyService.java
new file mode 100644
index 0000000000..f4e59d12ea
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/MultiplyService.java
@@ -0,0 +1,31 @@
+/*
+ * 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.operations;
+
+import org.oasisopen.sca.annotation.Remotable;
+
+/**
+ * The interface for the multiply service
+ */
+@Remotable
+public interface MultiplyService {
+
+    double multiply(double n1, double n2);
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/SubtractService.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/SubtractService.java
new file mode 100644
index 0000000000..bfb9b820f7
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/SubtractService.java
@@ -0,0 +1,31 @@
+/*
+ * 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.operations;
+
+import org.oasisopen.sca.annotation.Remotable;
+
+/**
+ * The interface for the subtract service
+ */
+@Remotable
+public interface SubtractService {
+
+    double subtract(double n1, double n2);
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/AddServiceImpl.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/AddServiceImpl.java
new file mode 100644
index 0000000000..66b2977241
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/AddServiceImpl.java
@@ -0,0 +1,37 @@
+/*
+ * 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.operations.impl;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import calculator.dosgi.operations.AddService;
+
+/**
+ * An implementation of the Add service
+ */
+public class AddServiceImpl implements AddService {
+
+    public double add(double n1, double n2) {
+        Logger logger = Logger.getLogger("calculator");
+        logger.log(Level.INFO, "Adding " + n1 + " and " + n2);
+        return n1 + n2;
+    }
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/DivideServiceImpl.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/DivideServiceImpl.java
new file mode 100644
index 0000000000..a3c21b2b96
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/DivideServiceImpl.java
@@ -0,0 +1,37 @@
+/*
+ * 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.operations.impl;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import calculator.dosgi.operations.DivideService;
+
+/**
+ * An implementation of the Divide service.
+ */
+public class DivideServiceImpl implements DivideService {
+
+    public double divide(double n1, double n2) {
+        Logger logger = Logger.getLogger("calculator");
+        logger.log(Level.INFO, "Dividing " + n1 + " with " + n2);
+        return n1 / n2;
+    }
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/MultiplyServiceImpl.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/MultiplyServiceImpl.java
new file mode 100644
index 0000000000..7922d2d392
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/MultiplyServiceImpl.java
@@ -0,0 +1,37 @@
+/*
+ * 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.operations.impl;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import calculator.dosgi.operations.MultiplyService;
+
+/**
+ * An implementation of the Multiply service.
+ */
+public class MultiplyServiceImpl implements MultiplyService {
+
+    public double multiply(double n1, double n2) {
+        Logger logger = Logger.getLogger("calculator");
+        logger.log(Level.INFO, "Multiplying " + n1 + " with " + n2);
+        return n1 * n2;
+    }
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/OperationsActivator.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/OperationsActivator.java
new file mode 100644
index 0000000000..a9d727b7e9
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/OperationsActivator.java
@@ -0,0 +1,94 @@
+/*
+ * 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.operations.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.operations.AddService;
+import calculator.dosgi.operations.DivideService;
+import calculator.dosgi.operations.MultiplyService;
+import calculator.dosgi.operations.SubtractService;
+
+/**
+ *
+ */
+public class OperationsActivator implements BundleActivator {
+    private Logger logger = Logger.getLogger(OperationsActivator.class.getName());
+
+    public void start(BundleContext context) throws Exception {
+        logger.info("Starting " + context.getBundle());
+
+        Dictionary<String, Object> props = new Hashtable<String, Object>();
+        props.put("service.exported.configs", new String[] {"sca"});
+        props.put("service.exported.interfaces", new String[] {"*"});
+        
+        logger.info("Registering " + AddService.class.getName());
+        props.put("sca.service", "AddComponent#service-name(Add)");
+        props.put("sca.bindings", new String[] {"OSGI-INF/sca/add-service.bindings"});
+        context.registerService(AddService.class.getName(), new AddServiceImpl(), props);
+
+        logger.info("Registering " + SubtractService.class.getName());
+        props.put("sca.service", "SubtractComponent#service-name(Subtract)");
+        props.put("sca.bindings", new String[] {"OSGI-INF/sca/subtract-service.bindings"});
+        context.registerService(SubtractService.class.getName(), new SubtractServiceImpl(), props);
+
+        logger.info("Registering " + MultiplyService.class.getName());
+        props.put("sca.service", "MultiplyComponent#service-name(Multiply)");
+        props.put("sca.bindings", new String[] {"OSGI-INF/sca/multiply-service.bindings"});
+        context.registerService(MultiplyService.class.getName(), new MultiplyServiceImpl(), props);
+
+        logger.info("Registering " + DivideService.class.getName());
+        props.put("sca.service", "DivideComponent#service-name(Divide)");
+        props.put("sca.bindings", new String[] {"OSGI-INF/sca/divide-service.bindings"});
+        context.registerService(DivideService.class.getName(), new DivideServiceImpl(), props);
+
+        getBundle(context, AddService.class);
+    }
+
+    public void stop(BundleContext context) throws Exception {
+        logger.info("Stopping " + context.getBundle());
+        // Registered services will be automatically unregistered
+    }
+
+    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;
+    }
+
+}
diff --git a/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/SubtractServiceImpl.java b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/SubtractServiceImpl.java
new file mode 100644
index 0000000000..4bbe83b14f
--- /dev/null
+++ b/java/sca/samples/dosgi-dynamic-calculator-operations/src/main/java/calculator/dosgi/operations/impl/SubtractServiceImpl.java
@@ -0,0 +1,37 @@
+/*
+ * 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.operations.impl;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import calculator.dosgi.operations.SubtractService;
+
+/**
+ * An implementation of the subtract service.
+ */
+public class SubtractServiceImpl implements SubtractService {
+
+    public double subtract(double n1, double n2) {
+        Logger logger = Logger.getLogger("calculator");
+        logger.log(Level.INFO, "Subtracting " + n1 + " from " + n2);
+        return n1 - n2;
+    }
+
+}