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/*
* 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 java.util.Set;
import javax.management.DynamicMBean;
import javax.management.MBeanException;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.Group;
import org.apache.catalina.Loader;
import org.apache.catalina.Role;
import org.apache.catalina.Server;
import org.apache.catalina.User;
import org.apache.catalina.UserDatabase;
import org.apache.catalina.util.ContextName;
import org.apache.tomcat.util.descriptor.web.ContextEnvironment;
import org.apache.tomcat.util.descriptor.web.ContextResource;
import org.apache.tomcat.util.descriptor.web.ContextResourceLink;
import org.apache.tomcat.util.modeler.ManagedBean;
import org.apache.tomcat.util.modeler.Registry;
import org.apache.tomcat.util.res.StringManager;
/**
* Public utility methods in support of the server side MBeans implementation.
*
* @author Craig R. McClanahan
* @author Amy Roh
*/
public class MBeanUtils {
// ------------------------------------------------------- Static Variables
protected static final StringManager sm = StringManager.getManager(MBeanUtils.class);
/**
* The set of exceptions to the normal rules used by
* createManagedBean(). The first element of each pair
* is a class name, and the second element is the managed bean name.
*/
private static final String exceptions[][] = {
{ "org.apache.catalina.users.MemoryGroup",
"Group" },
{ "org.apache.catalina.users.MemoryRole",
"Role" },
{ "org.apache.catalina.users.MemoryUser",
"User" },
};
/**
* The configuration information registry for our managed beans.
*/
private static Registry registry = createRegistry();
/**
* The MBeanServer for this application.
*/
private static MBeanServer mserver = createServer();
// --------------------------------------------------------- Static Methods
/**
* Create and return the name of the ManagedBean that
* corresponds to this Catalina component.
*
* @param component The component for which to create a name
*/
static String createManagedName(Object component) {
// Deal with exceptions to the standard rule
String className = component.getClass().getName();
for (int i = 0; i < exceptions.length; i++) {
if (className.equals(exceptions[i][0])) {
return exceptions[i][1];
}
}
// Perform the standard transformation
int period = className.lastIndexOf('.');
if (period >= 0)
className = className.substring(period + 1);
return className;
}
/**
* Create, register, and return an MBean for this
* ContextEnvironment object.
*
* @param environment The ContextEnvironment to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
public static DynamicMBean createMBean(ContextEnvironment environment)
throws Exception {
String mname = createManagedName(environment);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(environment);
ObjectName oname = createObjectName(domain, environment);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* ContextResource object.
*
* @param resource The ContextResource to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
public static DynamicMBean createMBean(ContextResource resource)
throws Exception {
String mname = createManagedName(resource);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(resource);
ObjectName oname = createObjectName(domain, resource);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* ContextResourceLink object.
*
* @param resourceLink The ContextResourceLink to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
public static DynamicMBean createMBean(ContextResourceLink resourceLink)
throws Exception {
String mname = createManagedName(resourceLink);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(resourceLink);
ObjectName oname = createObjectName(domain, resourceLink);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* Group object.
*
* @param group The Group to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
static DynamicMBean createMBean(Group group)
throws Exception {
String mname = createManagedName(group);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(group);
ObjectName oname = createObjectName(domain, group);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* Role object.
*
* @param role The Role to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
static DynamicMBean createMBean(Role role)
throws Exception {
String mname = createManagedName(role);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(role);
ObjectName oname = createObjectName(domain, role);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* User object.
*
* @param user The User to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
static DynamicMBean createMBean(User user)
throws Exception {
String mname = createManagedName(user);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(user);
ObjectName oname = createObjectName(domain, user);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create, register, and return an MBean for this
* UserDatabase object.
*
* @param userDatabase The UserDatabase to be managed
* @return a new MBean
* @exception Exception if an MBean cannot be created or registered
*/
static DynamicMBean createMBean(UserDatabase userDatabase)
throws Exception {
String mname = createManagedName(userDatabase);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
Exception e = new Exception(sm.getString("mBeanUtils.noManagedBean", mname));
throw new MBeanException(e);
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
DynamicMBean mbean = managed.createMBean(userDatabase);
ObjectName oname = createObjectName(domain, userDatabase);
if( mserver.isRegistered( oname )) {
mserver.unregisterMBean(oname);
}
mserver.registerMBean(mbean, oname);
return mbean;
}
/**
* Create an ObjectName for this
* Service object.
*
* @param domain Domain in which this name is to be created
* @param environment The ContextEnvironment to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
public static ObjectName createObjectName(String domain,
ContextEnvironment environment)
throws MalformedObjectNameException {
ObjectName name = null;
Object container =
environment.getNamingResources().getContainer();
if (container instanceof Server) {
name = new ObjectName(domain + ":type=Environment" +
",resourcetype=Global,name=" + environment.getName());
} else if (container instanceof Context) {
Context context = ((Context)container);
ContextName cn = new ContextName(context.getName(), false);
Container host = context.getParent();
name = new ObjectName(domain + ":type=Environment" +
",resourcetype=Context,host=" + host.getName() +
",context=" + cn.getDisplayName() +
",name=" + environment.getName());
}
return name;
}
/**
* Create an ObjectName for this
* ContextResource object.
*
* @param domain Domain in which this name is to be created
* @param resource The ContextResource to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
public static ObjectName createObjectName(String domain,
ContextResource resource)
throws MalformedObjectNameException {
ObjectName name = null;
String quotedResourceName = ObjectName.quote(resource.getName());
Object container =
resource.getNamingResources().getContainer();
if (container instanceof Server) {
name = new ObjectName(domain + ":type=Resource" +
",resourcetype=Global,class=" + resource.getType() +
",name=" + quotedResourceName);
} else if (container instanceof Context) {
Context context = ((Context)container);
ContextName cn = new ContextName(context.getName(), false);
Container host = context.getParent();
name = new ObjectName(domain + ":type=Resource" +
",resourcetype=Context,host=" + host.getName() +
",context=" + cn.getDisplayName() +
",class=" + resource.getType() +
",name=" + quotedResourceName);
}
return name;
}
/**
* Create an ObjectName for this
* ContextResourceLink object.
*
* @param domain Domain in which this name is to be created
* @param resourceLink The ContextResourceLink to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
public static ObjectName createObjectName(String domain,
ContextResourceLink resourceLink)
throws MalformedObjectNameException {
ObjectName name = null;
String quotedResourceLinkName
= ObjectName.quote(resourceLink.getName());
Object container =
resourceLink.getNamingResources().getContainer();
if (container instanceof Server) {
name = new ObjectName(domain + ":type=ResourceLink" +
",resourcetype=Global" +
",name=" + quotedResourceLinkName);
} else if (container instanceof Context) {
Context context = ((Context)container);
ContextName cn = new ContextName(context.getName(), false);
Container host = context.getParent();
name = new ObjectName(domain + ":type=ResourceLink" +
",resourcetype=Context,host=" + host.getName() +
",context=" + cn.getDisplayName() +
",name=" + quotedResourceLinkName);
}
return name;
}
/**
* Create an ObjectName for this
* Group object.
*
* @param domain Domain in which this name is to be created
* @param group The Group to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
static ObjectName createObjectName(String domain,
Group group)
throws MalformedObjectNameException {
ObjectName name = null;
name = new ObjectName(domain + ":type=Group,groupname=" +
ObjectName.quote(group.getGroupname()) +
",database=" + group.getUserDatabase().getId());
return name;
}
/**
* Create an ObjectName for this
* Loader object.
*
* @param domain Domain in which this name is to be created
* @param loader The Loader to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
static ObjectName createObjectName(String domain, Loader loader)
throws MalformedObjectNameException {
ObjectName name = null;
Context context = loader.getContext();
ContextName cn = new ContextName(context.getName(), false);
Container host = context.getParent();
name = new ObjectName(domain + ":type=Loader,host=" + host.getName() +
",context=" + cn.getDisplayName());
return name;
}
/**
* Create an ObjectName for this
* Role object.
*
* @param domain Domain in which this name is to be created
* @param role The Role to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
static ObjectName createObjectName(String domain, Role role)
throws MalformedObjectNameException {
ObjectName name = new ObjectName(domain + ":type=Role,rolename=" +
ObjectName.quote(role.getRolename()) +
",database=" + role.getUserDatabase().getId());
return name;
}
/**
* Create an ObjectName for this
* User object.
*
* @param domain Domain in which this name is to be created
* @param user The User to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
static ObjectName createObjectName(String domain, User user)
throws MalformedObjectNameException {
ObjectName name = new ObjectName(domain + ":type=User,username=" +
ObjectName.quote(user.getUsername()) +
",database=" + user.getUserDatabase().getId());
return name;
}
/**
* Create an ObjectName for this
* UserDatabase object.
*
* @param domain Domain in which this name is to be created
* @param userDatabase The UserDatabase to be named
* @return a new object name
* @exception MalformedObjectNameException if a name cannot be created
*/
static ObjectName createObjectName(String domain,
UserDatabase userDatabase)
throws MalformedObjectNameException {
ObjectName name = null;
name = new ObjectName(domain + ":type=UserDatabase,database=" +
userDatabase.getId());
return name;
}
/**
* Create and configure (if necessary) and return the registry of
* managed object descriptions.
* @return the singleton registry
*/
public static synchronized Registry createRegistry() {
if (registry == null) {
registry = Registry.getRegistry(null, null);
ClassLoader cl = MBeanUtils.class.getClassLoader();
registry.loadDescriptors("org.apache.catalina.mbeans", cl);
registry.loadDescriptors("org.apache.catalina.authenticator", cl);
registry.loadDescriptors("org.apache.catalina.core", cl);
registry.loadDescriptors("org.apache.catalina", cl);
registry.loadDescriptors("org.apache.catalina.deploy", cl);
registry.loadDescriptors("org.apache.catalina.loader", cl);
registry.loadDescriptors("org.apache.catalina.realm", cl);
registry.loadDescriptors("org.apache.catalina.session", cl);
registry.loadDescriptors("org.apache.catalina.startup", cl);
registry.loadDescriptors("org.apache.catalina.users", cl);
registry.loadDescriptors("org.apache.catalina.ha", cl);
registry.loadDescriptors("org.apache.catalina.connector", cl);
registry.loadDescriptors("org.apache.catalina.valves", cl);
registry.loadDescriptors("org.apache.catalina.storeconfig", cl);
registry.loadDescriptors("org.apache.tomcat.util.descriptor.web", cl);
}
return registry;
}
/**
* Create and configure (if necessary) and return the
* MBeanServer with which we will be
* registering our DynamicMBean implementations.
* @return the singleton MBean server
*/
public static synchronized MBeanServer createServer() {
if (mserver == null) {
mserver = Registry.getRegistry(null, null).getMBeanServer();
}
return mserver;
}
/**
* Deregister the MBean for this
* ContextEnvironment object.
*
* @param environment The ContextEnvironment to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
public static void destroyMBean(ContextEnvironment environment)
throws Exception {
String mname = createManagedName(environment);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, environment);
if( mserver.isRegistered(oname) )
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for this
* ContextResource object.
*
* @param resource The ContextResource to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
public static void destroyMBean(ContextResource resource)
throws Exception {
// If this is a user database resource need to destroy groups, roles,
// users and UserDatabase mbean
if ("org.apache.catalina.UserDatabase".equals(resource.getType())) {
destroyMBeanUserDatabase(resource.getName());
}
String mname = createManagedName(resource);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, resource);
if( mserver.isRegistered(oname ))
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for this
* ContextResourceLink object.
*
* @param resourceLink The ContextResourceLink to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
public static void destroyMBean(ContextResourceLink resourceLink)
throws Exception {
String mname = createManagedName(resourceLink);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, resourceLink);
if( mserver.isRegistered(oname) )
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for this
* Group object.
*
* @param group The Group to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
static void destroyMBean(Group group)
throws Exception {
String mname = createManagedName(group);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, group);
if( mserver.isRegistered(oname) )
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for this
* Role object.
*
* @param role The Role to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
static void destroyMBean(Role role)
throws Exception {
String mname = createManagedName(role);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, role);
if( mserver.isRegistered(oname) )
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for this
* User object.
*
* @param user The User to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
static void destroyMBean(User user)
throws Exception {
String mname = createManagedName(user);
ManagedBean managed = registry.findManagedBean(mname);
if (managed == null) {
return;
}
String domain = managed.getDomain();
if (domain == null)
domain = mserver.getDefaultDomain();
ObjectName oname = createObjectName(domain, user);
if( mserver.isRegistered(oname) )
mserver.unregisterMBean(oname);
}
/**
* Deregister the MBean for the
* UserDatabase object with this name.
*
* @param userDatabase The UserDatabase to be managed
*
* @exception Exception if an MBean cannot be deregistered
*/
static void destroyMBeanUserDatabase(String userDatabase)
throws Exception {
ObjectName query = null;
Set results = null;
// Groups
query = new ObjectName(
"Users:type=Group,database=" + userDatabase + ",*");
results = mserver.queryNames(query, null);
for(ObjectName result : results) {
mserver.unregisterMBean(result);
}
// Roles
query = new ObjectName(
"Users:type=Role,database=" + userDatabase + ",*");
results = mserver.queryNames(query, null);
for(ObjectName result : results) {
mserver.unregisterMBean(result);
}
// Users
query = new ObjectName(
"Users:type=User,database=" + userDatabase + ",*");
results = mserver.queryNames(query, null);
for(ObjectName result : results) {
mserver.unregisterMBean(result);
}
// The database itself
ObjectName db = new ObjectName(
"Users:type=UserDatabase,database=" + userDatabase);
if( mserver.isRegistered(db) ) {
mserver.unregisterMBean(db);
}
}
}
