001 /**
002 *
003 * Copyright 2003-2005 The Apache Software Foundation
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.tomcat;
018
019 import java.util.Map;
020
021 import org.apache.catalina.Valve;
022 import org.apache.commons.logging.Log;
023 import org.apache.commons.logging.LogFactory;
024 import org.apache.geronimo.gbean.GBeanInfo;
025 import org.apache.geronimo.gbean.GBeanInfoBuilder;
026 import org.apache.geronimo.gbean.GBeanLifecycle;
027
028 /**
029 * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
030 */
031 public class ValveGBean extends BaseGBean implements GBeanLifecycle, ObjectRetriever {
032
033 private static final Log log = LogFactory.getLog(ValveGBean.class);
034
035 public static final String J2EE_TYPE = "TomcatValve";
036
037 private final Valve valve;
038 private final ValveGBean nextValve;
039 private final String className;
040
041
042 public ValveGBean(){
043 valve = null;
044 nextValve = null;
045 className = null;
046 }
047
048 public ValveGBean(String className, Map initParams, ValveGBean nextValve) throws Exception{
049
050 //Validate
051 if (className == null){
052 throw new IllegalArgumentException("className cannot be null.");
053 }
054
055 if (nextValve != null){
056 if (!(nextValve.getInternalObject() instanceof Valve)){
057 throw new IllegalArgumentException("The class given as the NextValve attribute does not wrap an object of org.apache.catalina.Valve type.");
058 }
059 this.nextValve = nextValve;
060 } else {
061 this.nextValve = null;
062 }
063
064 this.className = className;
065
066 //Create the Valve object
067 valve = (Valve)Class.forName(className).newInstance();
068
069 //Set the parameters
070 setParameters(valve, initParams);
071
072 }
073
074 public void doStart() throws Exception {
075 log.debug(className + " started.");
076 }
077
078 public void doStop() throws Exception {
079 log.debug(className + " stopped.");
080 }
081
082 public void doFail() {
083 log.warn(className + " failed.");
084 }
085
086 public Object getInternalObject() {
087 return valve;
088 }
089
090 public ValveGBean getNextValve() {
091 return nextValve;
092 }
093
094 public static final GBeanInfo GBEAN_INFO;
095
096 static {
097 GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(ValveGBean.class, J2EE_TYPE);
098 infoFactory.addAttribute("className", String.class, true);
099 infoFactory.addAttribute("initParams", Map.class, true);
100 infoFactory.addReference("NextValve", ValveGBean.class, J2EE_TYPE);
101 infoFactory.addOperation("getInternalObject");
102 infoFactory.addOperation("getNextValve");
103 infoFactory.setConstructor(new String[] { "className", "initParams", "NextValve" });
104 GBEAN_INFO = infoFactory.getBeanInfo();
105 }
106
107 public static GBeanInfo getGBeanInfo() {
108 return GBEAN_INFO;
109 }
110
111 }