Package org.apache.catalina.mbeans

Source Code of org.apache.catalina.mbeans.DefaultContextMBean

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package org.apache.catalina.mbeans;

import java.net.URLDecoder;
import java.util.ArrayList;
import javax.management.MalformedObjectNameException;
import javax.management.MBeanException;
import javax.management.ObjectName;
import javax.management.RuntimeOperationsException;
import org.apache.catalina.core.StandardDefaultContext;
import org.apache.catalina.deploy.ContextEnvironment;
import org.apache.catalina.deploy.ContextResource;
import org.apache.catalina.deploy.ContextResourceLink;
import org.apache.catalina.deploy.NamingResources;
import org.apache.catalina.deploy.ResourceParams;
import com.sun.org.apache.commons.modeler.BaseModelMBean;
import com.sun.org.apache.commons.modeler.ManagedBean;
import com.sun.org.apache.commons.modeler.Registry;

/**
* <p>A <strong>ModelMBean</strong> implementation for the
* <code>org.apache.catalina.core.StandardDefaultContext</code> component.</p>
*
* @author Amy Roh
* @version $Revision: 1.5.6.1 $ $Date: 2008/04/17 18:37:14 $
*/

public class DefaultContextMBean extends BaseModelMBean {


    // ----------------------------------------------------------- Constructors


    /**
     * Construct a <code>ModelMBean</code> with default
     * <code>ModelMBeanInfo</code> information.
     *
     * @exception MBeanException if the initializer of an object
     *  throws an exception
     * @exception RuntimeOperationsException if an IllegalArgumentException
     *  occurs
     */
    public DefaultContextMBean()
        throws MBeanException, RuntimeOperationsException {

        super();
        registry = MBeanUtils.createRegistry();
    }
   

    // ----------------------------------------------------- Instance Variables
   
   
    /**
     * The <code>ManagedBean</code> information describing this MBean.
     */
    protected ManagedBean managed =
        registry.findManagedBean("DefaultContext");

   
    // ------------------------------------------------------------- Attributes

   
    /**
     * Return the naming resources associated with this web application.
     */
    private NamingResources getNamingResources() {
       
        return ((StandardDefaultContext)this.resource).getNamingResources();
   
    }
   
   
    /**
     * Return the MBean Names of the set of defined environment entries for 
     * this web application
     */
    public String[] getEnvironments() {
        ContextEnvironment[] envs = getNamingResources().findEnvironments();
        ArrayList results = new ArrayList();
        for (int i = 0; i < envs.length; i++) {
            try {
                ObjectName oname =
                    MBeanUtils.createObjectName(managed.getDomain(), envs[i]);
                results.add(oname.toString());
            } catch (MalformedObjectNameException e) {
                IllegalArgumentException iae = new IllegalArgumentException
                    ("Cannot create object name for environment " + envs[i]);
                iae.initCause(e);
                throw iae;
            }
        }
        return ((String[]) results.toArray(new String[results.size()]));

    }
   
   
    /**
     * Return the MBean Names of all the defined resource references for this
     * application.
     */
    public String[] getResources() {
       
        ContextResource[] resources = getNamingResources().findResources();
        ArrayList results = new ArrayList();
        for (int i = 0; i < resources.length; i++) {
            try {
                ObjectName oname =
                    MBeanUtils.createObjectName(managed.getDomain(), resources[i]);
                results.add(oname.toString());
            } catch (MalformedObjectNameException e) {
                IllegalArgumentException iae = new IllegalArgumentException
                    ("Cannot create object name for resource " + resources[i]);
                iae.initCause(e);
                throw iae;
            }
        }
        return ((String[]) results.toArray(new String[results.size()]));

    }

     
    /**
     * Return the MBean Names of all the defined resource links for this
     * application
     */
    public String[] getResourceLinks() {
       
        ContextResourceLink[] links = getNamingResources().findResourceLinks();
        ArrayList results = new ArrayList();
        for (int i = 0; i < links.length; i++) {
            try {
                ObjectName oname =
                    MBeanUtils.createObjectName(managed.getDomain(), links[i]);
                results.add(oname.toString());
            } catch (MalformedObjectNameException e) {
                IllegalArgumentException iae = new IllegalArgumentException
                    ("Cannot create object name for resource " + links[i]);
                iae.initCause(e);
                throw iae;
            }
        }
        return ((String[]) results.toArray(new String[results.size()]));

    }

    // ------------------------------------------------------------- Operations


    /**
     * Add an environment entry for this web application.
     *
     * @param envName New environment entry name
     */
    public String addEnvironment(String envName, String type)
        throws MalformedObjectNameException {

        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return null;
        }
        ContextEnvironment env = nresources.findEnvironment(envName);
        if (env != null) {
            throw new IllegalArgumentException
                ("Invalid environment name - already exists '" + envName + "'");
        }
        env = new ContextEnvironment();
        env.setName(envName);
        env.setType(type);
        nresources.addEnvironment(env);
       
        // Return the corresponding MBean name
        ManagedBean managed = registry.findManagedBean("ContextEnvironment");
        ObjectName oname =
            MBeanUtils.createObjectName(managed.getDomain(), env);
        return (oname.toString());
       
    }

   
    /**
     * Add a resource reference for this web application.
     *
     * @param resourceName New resource reference name
     */
    public String addResource(String resourceName, String type)
        throws MalformedObjectNameException {
       
        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return null;
        }
        ContextResource resource = nresources.findResource(resourceName);
        if (resource != null) {
            throw new IllegalArgumentException
                ("Invalid resource name - already exists'" + resourceName + "'");
        }
        resource = new ContextResource();
        resource.setName(resourceName);
        resource.setType(type);
        nresources.addResource(resource);
       
        // Return the corresponding MBean name
        ManagedBean managed = registry.findManagedBean("ContextResource");
        ObjectName oname =
            MBeanUtils.createObjectName(managed.getDomain(), resource);
       
        return (oname.toString());
    }

   
    /**
     * Add a resource link for this web application.
     *
     * @param resourceLinkName New resource link name
     */
    public String addResourceLink(String resourceLinkName, String global,
                String name, String type) throws MalformedObjectNameException {
       
        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return null;
        }
        ContextResourceLink resourceLink =
                                nresources.findResourceLink(resourceLinkName);
        if (resourceLink != null) {
            throw new IllegalArgumentException
                ("Invalid resource link name - already exists'" +
                                                        resourceLinkName + "'");
        }
        resourceLink = new ContextResourceLink();
        resourceLink.setGlobal(global);
        resourceLink.setName(resourceLinkName);
        resourceLink.setType(type);
        nresources.addResourceLink(resourceLink);
       
        // Return the corresponding MBean name
        ManagedBean managed = registry.findManagedBean("ContextResourceLink");
        ObjectName oname =
            MBeanUtils.createObjectName(managed.getDomain(), resourceLink);
        return (oname.toString());
    }   
   
   
    /**
     * Remove any environment entry with the specified name.
     *
     * @param name Name of the environment entry to remove
     */
    public void removeEnvironment(String envName) {

        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return;
        }
        ContextEnvironment env = nresources.findEnvironment(envName);
        if (env == null) {
            throw new IllegalArgumentException
                ("Invalid environment name '" + envName + "'");
        }
        nresources.removeEnvironment(envName);

    }
   
   
    /**
     * Remove any resource reference with the specified name.
     *
     * @param resourceName Name of the resource reference to remove
     */
    public void removeResource(String resourceName) {

        resourceName = URLDecoder.decode(resourceName);
        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return;
        }
        ContextResource resource = nresources.findResource(resourceName);
        if (resource == null) {
            throw new IllegalArgumentException
                ("Invalid resource name '" + resourceName + "'");
        }
        nresources.removeResource(resourceName);
    }
   
   
    /**
     * Remove any resource link with the specified name.
     *
     * @param resourceName Name of the resource reference to remove
     */
    public void removeResourceLink(String resourceLinkName) {

        resourceLinkName = URLDecoder.decode(resourceLinkName);
        NamingResources nresources = getNamingResources();
        if (nresources == null) {
            return;
        }
        ContextResourceLink resource = nresources.findResourceLink(resourceLinkName);
        if (resource == null) {
            throw new IllegalArgumentException
                ("Invalid resource name '" + resourceLinkName + "'");
        }
        nresources.removeResourceLink(resourceLinkName);
    }
   
}
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