/*
* $Header: /home/cvs/jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/valves/ValveBase.java,v 1.9 2003/09/02 21:22:03 remm Exp $
* $Revision: 1.9 $
* $Date: 2003/09/02 21:22:03 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 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 acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" 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"
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* SUCH DAMAGE.
* ====================================================================
*
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* information on the Apache Software Foundation, please see
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*
* [Additional notices, if required by prior licensing conditions]
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*/
package org.apache.catalina.valves;
import java.io.IOException;
import javax.management.MBeanRegistration;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.servlet.ServletException;
import org.apache.catalina.Contained;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.Pipeline;
import org.apache.catalina.Request;
import org.apache.catalina.Response;
import org.apache.catalina.Valve;
import org.apache.catalina.ValveContext;
import org.apache.catalina.Wrapper;
import org.apache.catalina.core.ContainerBase;
import org.apache.catalina.util.StringManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Convenience base class for implementations of the <b>Valve</b> interface.
* A subclass <strong>MUST</strong> implement an <code>invoke()</code>
* method to provide the required functionality, and <strong>MAY</strong>
* implement the <code>Lifecycle</code> interface to provide configuration
* management and lifecycle support.
*
* @author Craig R. McClanahan
* @version $Revision: 1.9 $ $Date: 2003/09/02 21:22:03 $
*/
public abstract class ValveBase
implements Contained, Valve, MBeanRegistration {
private static Log log = LogFactory.getLog(ValveBase.class);
//------------------------------------------------------ Instance Variables
/**
* The Container whose pipeline this Valve is a component of.
*/
protected Container container = null;
/**
* The debugging detail level for this component.
*/
protected int debug = 0;
/**
* Descriptive information about this Valve implementation. This value
* should be overridden by subclasses.
*/
protected static String info =
"org.apache.catalina.core.ValveBase/1.0";
/**
* The string manager for this package.
*/
protected final static StringManager sm =
StringManager.getManager(Constants.Package);
//-------------------------------------------------------------- Properties
/**
* Return the Container with which this Valve is associated, if any.
*/
public Container getContainer() {
return (container);
}
/**
* Set the Container with which this Valve is associated, if any.
*
* @param container The new associated container
*/
public void setContainer(Container container) {
this.container = container;
}
/**
* Return the debugging detail level for this component.
*/
public int getDebug() {
return (this.debug);
}
/**
* Set the debugging detail level for this component.
*
* @param debug The new debugging detail level
*/
public void setDebug(int debug) {
this.debug = debug;
}
/**
* Return descriptive information about this Valve implementation.
*/
public String getInfo() {
return (info);
}
//---------------------------------------------------------- Public Methods
/**
* The implementation-specific logic represented by this Valve. See the
* Valve description for the normal design patterns for this method.
* <p>
* This method <strong>MUST</strong> be provided by a subclass.
*
* @param request The servlet request to be processed
* @param response The servlet response to be created
* @param context The valve context used to invoke the next valve
* in the current processing pipeline
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
public abstract void invoke(Request request, Response response,
ValveContext context)
throws IOException, ServletException;
// -------------------- JMX and Registration --------------------
protected String domain;
protected ObjectName oname;
protected MBeanServer mserver;
protected ObjectName controller;
public ObjectName getObjectName() {
return oname;
}
public void setObjectName(ObjectName oname) {
this.oname = oname;
}
public String getDomain() {
return domain;
}
public ObjectName preRegister(MBeanServer server,
ObjectName name) throws Exception {
oname=name;
mserver=server;
domain=name.getDomain();
return name;
}
public void postRegister(Boolean registrationDone) {
}
public void preDeregister() throws Exception {
}
public void postDeregister() {
}
public ObjectName getController() {
return controller;
}
public void setController(ObjectName controller) {
this.controller = controller;
}
/** From the name, extract the parent object name
*
* @param valveName
* @return
*/
public ObjectName getParentName( ObjectName valveName ) {
return null;
}
public ObjectName createObjectName(String domain, ObjectName parent)
throws MalformedObjectNameException
{
Container container=this.getContainer();
if( container == null || ! (container instanceof ContainerBase) )
return null;
ContainerBase containerBase=(ContainerBase)container;
Pipeline pipe=containerBase.getPipeline();
Valve valves[]=pipe.getValves();
/* Compute the "parent name" part */
String parentName="";
if (container instanceof Engine) {
} else if (container instanceof Host) {
parentName=",host=" +container.getName();
} else if (container instanceof Context) {
String path = ((Context)container).getPath();
if (path.length() < 1) {
path = "/";
}
Host host = (Host) container.getParent();
parentName=",path=" + path + ",host=" +
host.getName();
} else if (container instanceof Wrapper) {
Context ctx = (Context) container.getParent();
String path = ctx.getPath();
if (path.length() < 1) {
path = "/";
}
Host host = (Host) ctx.getParent();
parentName=",servlet=" + container.getName() +
",path=" + path + ",host=" + host.getName();
}
log.debug("valve parent=" + parentName + " " + parent);
String className=this.getClass().getName();
int period = className.lastIndexOf('.');
if (period >= 0)
className = className.substring(period + 1);
int seq=0;
for( int i=0; i<valves.length; i++ ) {
// Find other valves with the same name
if( valves[i]!=null &&
valves[i].getClass() == this.getClass() &&
valves[i] != this ) {
log.debug("Duplicate " + valves[i] + " " + this + " " + container);
seq++;
}
}
String ext="";
if( seq > 0 ) {
ext=",seq=" + seq;
}
ObjectName objectName =
new ObjectName( domain + ":type=Valve,name=" + className + ext + parentName);
log.debug("valve objectname = "+objectName);
return objectName;
}
// -------------------- JMX data --------------------
public ObjectName getContainerName() {
if( container== null) return null;
return ((ContainerBase)container).getJmxName();
}
}