1 files changed, 68 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/monitor/NullMonitorFactory.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/monitor/NullMonitorFactory.java
new file mode 100644
index 0000000000..46c52e38f6
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/monitor/NullMonitorFactory.java
@@ -0,0 +1,68 @@
+/*
+ * 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.core.monitor;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+import java.util.Map;
+
+import org.osoa.sca.annotations.EagerInit;
+
+import org.apache.tuscany.host.MonitorFactory;
+import org.apache.tuscany.host.monitor.ExceptionFormatter;
+
+/**
+ * Implementation of a {@link MonitorFactory} that produces implementations that simply return.
+ *
+ * @version $Rev$ $Date$
+ */
+@EagerInit
+public class NullMonitorFactory implements MonitorFactory {
+
+    /**
+     * Singleton hander that does nothing.
+     */
+    private static final InvocationHandler NULL_MONITOR = new InvocationHandler() {
+        public Object invoke(Object proxy, Method method, Object[] args) {
+            return null;
+        }
+    };
+
+    public void initialize(Map<String, Object> configProperties) {
+    }
+
+    public <T> T getMonitor(Class<T> monitorInterface) {
+        /*
+         * This uses a reflection proxy to implement the monitor interface which
+         * is a simple but perhaps not very performant solution. Performance
+         * might be improved by code generating an implementation with empty methods.
+         */
+        return monitorInterface.cast(
+            Proxy.newProxyInstance(monitorInterface.getClassLoader(), new Class<?>[]{monitorInterface}, NULL_MONITOR));
+    }
+
+    public void register(ExceptionFormatter formatter) {
+
+    }
+
+    public void unregister(ExceptionFormatter formatter) {
+
+    }
+}