org.apache.catalina.mbeans.ContextResourceLinkMBean Maven / Gradle / Ivy
/*
* 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.catalina.mbeans;
import javax.management.Attribute;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.ReflectionException;
import javax.management.RuntimeOperationsException;
import javax.management.modelmbean.InvalidTargetObjectTypeException;
import org.apache.catalina.deploy.ContextResourceLink;
import org.apache.catalina.deploy.NamingResources;
import org.apache.tomcat.util.modeler.BaseModelMBean;
/**
* A ModelMBean implementation for the
* org.apache.catalina.deploy.ContextResourceLink component.
*
* @author Amy Roh
*/
public class ContextResourceLinkMBean extends BaseModelMBean {
// ----------------------------------------------------------- Constructors
/**
* Construct a ModelMBean with default
* ModelMBeanInfo information.
*
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception RuntimeOperationsException if an IllegalArgumentException
* occurs
*/
public ContextResourceLinkMBean()
throws MBeanException, RuntimeOperationsException {
super();
}
// ----------------------------------------------------- Instance Variables
// ------------------------------------------------------------- Attributes
/**
* Obtain and return the value of a specific attribute of this MBean.
*
* @param name Name of the requested attribute
*
* @exception AttributeNotFoundException if this attribute is not
* supported by this MBean
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception ReflectionException if a Java reflection exception
* occurs when invoking the getter
*/
@Override
public Object getAttribute(String name)
throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (name == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute name is null"),
"Attribute name is null");
ContextResourceLink cl = null;
try {
cl = (ContextResourceLink) getManagedResource();
} catch (InstanceNotFoundException e) {
throw new MBeanException(e);
} catch (InvalidTargetObjectTypeException e) {
throw new MBeanException(e);
}
String value = null;
if ("global".equals(name)) {
return (cl.getGlobal());
} else if ("description".equals(name)) {
return (cl.getDescription());
} else if ("name".equals(name)) {
return (cl.getName());
} else if ("type".equals(name)) {
return (cl.getType());
} else {
value = (String) cl.getProperty(name);
if (value == null) {
throw new AttributeNotFoundException
("Cannot find attribute "+name);
}
}
return value;
}
/**
* Set the value of a specific attribute of this MBean.
*
* @param attribute The identification of the attribute to be set
* and the new value
*
* @exception AttributeNotFoundException if this attribute is not
* supported by this MBean
* @exception MBeanException if the initializer of an object
* throws an exception
* @exception ReflectionException if a Java reflection exception
* occurs when invoking the getter
*/
@Override
public void setAttribute(Attribute attribute)
throws AttributeNotFoundException, MBeanException,
ReflectionException {
// Validate the input parameters
if (attribute == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute is null"),
"Attribute is null");
String name = attribute.getName();
Object value = attribute.getValue();
if (name == null)
throw new RuntimeOperationsException
(new IllegalArgumentException("Attribute name is null"),
"Attribute name is null");
ContextResourceLink crl = null;
try {
crl = (ContextResourceLink) getManagedResource();
} catch (InstanceNotFoundException e) {
throw new MBeanException(e);
} catch (InvalidTargetObjectTypeException e) {
throw new MBeanException(e);
}
if ("global".equals(name)) {
crl.setGlobal((String)value);
} else if ("description".equals(name)) {
crl.setDescription((String)value);
} else if ("name".equals(name)) {
crl.setName((String)value);
} else if ("type".equals(name)) {
crl.setType((String)value);
} else {
crl.setProperty(name, ""+value);
}
// cannot use side-effects. It's removed and added back each time
// there is a modification in a resource.
NamingResources nr = crl.getNamingResources();
nr.removeResourceLink(crl.getName());
nr.addResourceLink(crl);
}
}