1 files changed, 210 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
new file mode 100644
index 0000000000..a9a2fdbd0b
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
@@ -0,0 +1,210 @@
+/*
+ * 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.implementation.osgi.runtime;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.java.JavaOperation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.osgi.framework.Constants;
+
+/**
+ * The Invoker looks up the corresponding OSGi service from the OSGi service registry
+ * and delegate the call to it.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTargetInvoker implements Invoker {
+
+    private Operation operation;
+
+    private final OSGiImplementationProvider provider;
+    private final RuntimeComponent component;
+    private final RuntimeComponentService service;
+
+    public OSGiTargetInvoker(Operation operation, OSGiImplementationProvider provider, RuntimeComponentService service) {
+
+        this.operation = operation;
+        this.service = service;
+        this.provider = provider;
+        this.component = provider.getComponent();
+
+    }
+
+    private Object invokeTarget(Message msg) throws InvocationTargetException {
+
+        Operation op = msg.getOperation();
+        if (op == null) {
+            op = this.operation;
+        }
+
+        try {
+            Object instance = provider.getOSGiService(service);
+            Method m = findMethod(instance.getClass(), operation);
+
+            Object ret = invokeMethod(instance, m, msg);
+
+            return ret;
+        } catch (InvocationTargetException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new InvocationTargetException(e);
+        }
+    }
+
+    protected Object invokeMethod(Object instance, Method m, Message msg) throws InvocationTargetException {
+
+        try {
+
+            Object payload = msg.getBody();
+
+            if (payload != null && !payload.getClass().isArray()) {
+                return m.invoke(instance, payload);
+            } else {
+                return m.invoke(instance, (Object[])payload);
+            }
+
+        } catch (InvocationTargetException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new InvocationTargetException(e);
+        }
+    }
+
+    public Message invoke(Message msg) {
+        try {
+            Object resp = invokeTarget(msg);
+            msg.setBody(resp);
+        } catch (InvocationTargetException e) {
+            msg.setFaultBody(e.getCause());
+        }
+        return msg;
+    }
+
+    private String getOSGiFilter(Hashtable<String, Object> props) {
+        Object serviceID = props.get(Constants.SERVICE_ID);
+        if (serviceID != null) {
+            return "(" + Constants.SERVICE_ID + "=" + serviceID + ")";
+        }
+
+        String filter = "";
+
+        if (props != null && props.size() > 0) {
+            int propCount = 0;
+            for (String propName : props.keySet()) {
+                String value = String.valueOf(props.get(propName));
+                StringBuffer buf = new StringBuffer();
+                for (char c : value.toCharArray()) {
+                    if (c == '(' || c == ')') {
+                        buf.append("\\" + c);
+                    } else {
+                        buf.append(c);
+                    }
+                }
+                filter = filter + "(" + propName + "=" + buf.toString() + ")";
+                propCount++;
+            }
+
+            if (propCount > 1) {
+                filter = "(&" + filter + ")";
+            }
+        } else {
+            filter = null;
+        }
+        return filter;
+    }
+
+    /**
+     * @Deprecated
+     */
+    private static Class<?>[] getPhysicalTypes(Operation operation) {
+        DataType<List<DataType>> inputType = operation.getInputType();
+        if (inputType == null) {
+            return new Class<?>[] {};
+        }
+        List<DataType> types = inputType.getLogical();
+        Class<?>[] javaTypes = new Class<?>[types.size()];
+        for (int i = 0; i < javaTypes.length; i++) {
+            Type physical = types.get(i).getPhysical();
+            if (physical instanceof Class<?>) {
+                javaTypes[i] = (Class<?>)physical;
+            } else {
+                throw new UnsupportedOperationException();
+            }
+        }
+        return javaTypes;
+    }
+
+    /**
+     * Return the method on the implementation class that matches the operation.
+     *
+     * @param implClass the implementation class or interface
+     * @param operation the operation to match
+     * @return the method described by the operation
+     * @throws NoSuchMethodException if no such method exists
+     * @Deprecated
+     */
+    public static Method findMethod(Class<?> implClass, Operation operation) throws NoSuchMethodException {
+        String name = operation.getName();
+        if (operation instanceof JavaOperation) {
+            name = ((JavaOperation)operation).getJavaMethod().getName();
+        }
+        Interface interface1 = operation.getInterface();
+        int numParams = operation.getInputType().getLogical().size();
+        if (interface1 != null && interface1.isRemotable()) {
+            List<Method> matchingMethods = new ArrayList<Method>();
+            for (Method m : implClass.getMethods()) {
+                if (m.getName().equals(name) && m.getParameterTypes().length == numParams) {
+                    matchingMethods.add(m);
+                }
+            }
+
+            // TUSCANY-2180 If there is only one method then we just match on the name
+            // (this is the same as the existing behaviour)
+            if (matchingMethods.size() == 1) {
+                return matchingMethods.get(0);
+            }
+            if (matchingMethods.size() > 1) {
+                // TUSCANY-2180 We need to check the parameter types too
+                Class<?>[] paramTypes = getPhysicalTypes(operation);
+                return implClass.getMethod(name, paramTypes);
+            }
+
+            // No matching method found
+            throw new NoSuchMethodException("No matching method for operation " + operation.getName()
+                + " is found on "
+                + implClass);
+        }
+        Class<?>[] paramTypes = getPhysicalTypes(operation);
+        return implClass.getMethod(name, paramTypes);
+    }
+
+}