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From ge...@apache.org
Subject cvs commit: incubator-geronimo/modules/core/src/java/org/apache/geronimo/jmx JMXUtil.java MBeanProxyFactory.java
Date Sun, 10 Aug 2003 20:53:54 GMT
geirm       2003/08/10 13:53:54

  Added:       modules/core/src/java/org/apache/geronimo/jmx JMXUtil.java
                        MBeanProxyFactory.java
  Log:
  initial import
  
  Revision  Changes    Path
  1.1                  incubator-geronimo/modules/core/src/java/org/apache/geronimo/jmx/JMXUtil.java
  
  Index: JMXUtil.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.jmx;
  
  import javax.management.MalformedObjectNameException;
  import javax.management.ObjectName;
  
  /**
   * Helper class for JMX Operations
   *
   *
   * @version $Revision: 1.1 $ $Date: 2003/08/10 20:53:54 $
   */
  public class JMXUtil {
      /** the ObjectName of the MBeanServerDelegate */
      public static final ObjectName DELEGATE_NAME = getObjectName("JMImplementation:type=MBeanServerDelegate");
  
      /**
       * Convert a String to an ObjectName
       * @param name the name
       * @return the ObjectName from that String
       * @throws IllegalArgumentException if the name is malformed
       */
      public static ObjectName getObjectName(String name) throws IllegalArgumentException
{
          try {
              return new ObjectName(name);
          } catch (MalformedObjectNameException e) {
              throw new IllegalArgumentException("Malformed ObjectName: " + name);
          }
      }
  }
  
  
  
  1.1                  incubator-geronimo/modules/core/src/java/org/apache/geronimo/jmx/MBeanProxyFactory.java
  
  Index: MBeanProxyFactory.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.jmx;
  
  import java.lang.reflect.InvocationHandler;
  import java.lang.reflect.Method;
  import java.lang.reflect.Proxy;
  import java.util.HashMap;
  import java.util.Map;
  import javax.management.Attribute;
  import javax.management.InstanceNotFoundException;
  import javax.management.MBeanException;
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  import javax.management.ReflectionException;
  import javax.management.RuntimeErrorException;
  import javax.management.RuntimeMBeanException;
  import javax.management.RuntimeOperationsException;
  
  /**
   *
   *
   *
   * @version $Revision: 1.1 $ $Date: 2003/08/10 20:53:54 $
   */
  public class MBeanProxyFactory {
      public static Object getProxy(Class iface, MBeanServer server, ObjectName name) throws
InstanceNotFoundException {
          assert (iface != null);
          assert (iface.isInterface());
          assert (server != null);
  
          if (!server.isRegistered(name)) {
              throw new InstanceNotFoundException(name.toString());
          }
          ClassLoader cl = iface.getClassLoader();
          return Proxy.newProxyInstance(cl, new Class[]{iface}, new LocalHandler(server, name,
iface));
      }
  
      protected abstract static class AbstractHandler implements InvocationHandler {
          protected final MBeanServer server;
          protected final ObjectName name;
          protected final Map operationMap;
  
          public AbstractHandler(MBeanServer server, ObjectName name, Class iface) {
              this.server = server;
              this.name = name;
              Method[] methods = iface.getMethods();
              operationMap = new HashMap(methods.length);
              for (int i = 0; i < methods.length; i++) {
                  Method method = methods[i];
                  Class returnType = method.getReturnType();
                  String methodName = method.getName();
                  Class[] paramTypes = method.getParameterTypes();
  
                  // skip non-operation methods
                  if (methodName.startsWith("set") && returnType == Void.TYPE &&
paramTypes.length == 1) {
                      continue;
                  } else if (methodName.startsWith("get") && paramTypes.length ==
0) {
                      continue;
                  } else if (methodName.startsWith("is") && returnType == Boolean.TYPE
&& paramTypes.length == 0) {
                      continue;
                  }
  
                  String[] paramTypeNames = new String[paramTypes.length];
                  for (int j = 0; j < paramTypes.length; j++) {
                      paramTypeNames[j] = paramTypes[j].getName();
                  }
                  operationMap.put(method, paramTypeNames);
              }
          }
  
          public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
{
              try {
                  String methodName = method.getName();
  
                  // quick check if this is an operation
                  String[] params = (String[]) operationMap.get(method);
                  if (params != null) {
                      return invokeOperation(methodName, args, params);
                  }
  
                  if (methodName.startsWith("set")) {
                      setAttribute(new Attribute(methodName.substring(3), args[0]));
                      return null;
                  } else if (methodName.startsWith("get")) {
                      return getAttribute(methodName.substring(3));
                  } else if (methodName.startsWith("is")) {
                      return getAttribute(methodName.substring(2));
                  }
              } catch (Throwable t) {
                  Class[] declaredEx = method.getExceptionTypes();
                  Throwable tt = t;
                  while (true) {
                      for (int i = 0; i < declaredEx.length; i++) {
                          Class aClass = declaredEx[i];
                          if (aClass.isInstance(tt)) {
                              throw tt;
                          }
                      }
  
                      if (tt instanceof MBeanException) {
                          tt = (((MBeanException) tt).getTargetException());
                      } else if (tt instanceof ReflectionException) {
                          tt = (((ReflectionException) tt).getTargetException());
                      } else if (tt instanceof RuntimeOperationsException) {
                          tt = (((RuntimeOperationsException) tt).getTargetException());
                      } else if (tt instanceof RuntimeMBeanException) {
                          tt = (((RuntimeMBeanException) tt).getTargetException());
                      } else if (tt instanceof RuntimeErrorException) {
                          tt = (((RuntimeErrorException) tt).getTargetError());
                      } else {
                          // don't know how to unwrap this, just throw it
                          throw tt;
                      }
                  }
              }
              throw new AssertionError("Method did not match during invoke");
          }
  
          protected abstract void setAttribute(Attribute attribute) throws Exception;
  
          protected abstract Object getAttribute(String attribute) throws Exception;
  
          protected abstract Object invokeOperation(String method, Object[] args, String[]
params) throws Exception;
      }
  
      protected static class LocalHandler extends AbstractHandler {
          public LocalHandler(MBeanServer server, ObjectName name, Class iface) {
              super(server, name, iface);
          }
  
          protected void setAttribute(Attribute attribute) throws Exception {
              server.setAttribute(name, attribute);
          }
  
          protected Object getAttribute(String attribute) throws Exception {
              return server.getAttribute(this.name, attribute);
          }
  
          protected Object invokeOperation(String method, Object[] args, String[] params)
throws Exception {
              return server.invoke(name, method, args, params);
          }
      }
  }
  
  
  

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