standardpipeline.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

        lifecycle.fireLifecycleEvent(AFTER_STOP_EVENT, null);
    }

    private void registerValve(Valve valve) {

        if( valve instanceof ValveBase &&
                ((ValveBase)valve).getObjectName()==null ) {
            try {
                
                String domain=((ContainerBase)container).getDomain();
                if( container instanceof StandardContext ) {
                    domain=((StandardContext)container).getEngineName();
                }
                if( container instanceof StandardWrapper) {
                    Container ctx=((StandardWrapper)container).getParent();
                    domain=((StandardContext)ctx).getEngineName();
                }
                ObjectName vname=((ValveBase)valve).createObjectName(
                        domain,
                        ((ContainerBase)container).getJmxName());
                if( vname != null ) {
                    ((ValveBase)valve).setObjectName(vname);
                    Registry.getRegistry(null, null).registerComponent
                        (valve, vname, valve.getClass().getName());
                    ((ValveBase)valve).setController
                        (((ContainerBase)container).getJmxName());
                }
            } catch( Throwable t ) {
                log.info( "Can't register valve " + valve , t );
            }
        }
    }
    
    private void unregisterValve(Valve valve) {
        if( valve instanceof ValveBase ) {
            try {
                ValveBase vb=(ValveBase)valve;
                if( vb.getController()!=null &&
                        vb.getController() == 
                        ((ContainerBase)container).getJmxName() ) {
                    
                    ObjectName vname=vb.getObjectName();
                    Registry.getRegistry(null, null).getMBeanServer()
                        .unregisterMBean(vname);
                    ((ValveBase)valve).setObjectName(null);
                }
            } catch( Throwable t ) {
                log.info( "Can't unregister valve " + valve , t );
            }
        }
    }    

    // ------------------------------------------------------- Pipeline Methods


    /**
     * <p>Return the Valve instance that has been distinguished as the basic
     * Valve for this Pipeline (if any).
     */
    public Valve getBasic() {

        return (this.basic);

    }


    /**
     * <p>Set the Valve instance that has been distinguished as the basic
     * Valve for this Pipeline (if any).  Prioer to setting the basic Valve,
     * the Valve's <code>setContainer()</code> will be called, if it
     * implements <code>Contained</code>, with the owning Container as an
     * argument.  The method may throw an <code>IllegalArgumentException</code>
     * if this Valve chooses not to be associated with this Container, or
     * <code>IllegalStateException</code> if it is already associated with
     * a different Container.</p>
     *
     * @param valve Valve to be distinguished as the basic Valve
     */
    public void setBasic(Valve valve) {

        // Change components if necessary
        Valve oldBasic = this.basic;
        if (oldBasic == valve)
            return;

        // Stop the old component if necessary
        if (oldBasic != null) {
            if (started && (oldBasic instanceof Lifecycle)) {
                try {
                    ((Lifecycle) oldBasic).stop();
                } catch (LifecycleException e) {
                    log.error("StandardPipeline.setBasic: stop", e);
                }
            }
            if (oldBasic instanceof Contained) {
                try {
                    ((Contained) oldBasic).setContainer(null);
                } catch (Throwable t) {
                    ;
                }
            }
        }

        // Start the new component if necessary
        if (valve == null)
            return;
        if (valve instanceof Contained) {
            ((Contained) valve).setContainer(this.container);
        }
        if (valve instanceof Lifecycle) {
            try {
                ((Lifecycle) valve).start();
            } catch (LifecycleException e) {
                log.error("StandardPipeline.setBasic: start", e);
                return;
            }
        }
        this.basic = valve;

    }


    /**
     * <p>Add a new Valve to the end of the pipeline associated with this
     * Container.  Prior to adding the Valve, the Valve's
     * <code>setContainer()</code> method will be called, if it implements
     * <code>Contained</code>, with the owning Container as an argument.
     * The method may throw an
     * <code>IllegalArgumentException</code> if this Valve chooses not to
     * be associated with this Container, or <code>IllegalStateException</code>
     * if it is already associated with a different Container.</p>
     *
     * @param valve Valve to be added
     *
     * @exception IllegalArgumentException if this Container refused to
     *  accept the specified Valve
     * @exception IllegalArgumentException if the specifie Valve refuses to be
     *  associated with this Container
     * @exception IllegalStateException if the specified Valve is already
     *  associated with a different Container
     */
    public void addValve(Valve valve) {
    
        // Validate that we can add this Valve
        if (valve instanceof Contained)
            ((Contained) valve).setContainer(this.container);

        // Start the new component if necessary
        if (started) {
            if (valve instanceof Lifecycle) {
                try {
                    ((Lifecycle) valve).start();
                } catch (LifecycleException e) {
                    log.error("StandardPipeline.addValve: start: ", e);
                }
            }
            // Register the newly added valve
            registerValve(valve);
        }

        // Add this Valve to the set associated with this Pipeline
        synchronized (valves) {
            Valve results[] = new Valve[valves.length +1];
            System.arraycopy(valves, 0, results, 0, valves.length);
            results[valves.length] = valve;
            valves = results;
        }

    }


    /**
     * Return the set of Valves in the pipeline associated with this
     * Container, including the basic Valve (if any).  If there are no
     * such Valves, a zero-length array is returned.
     */
    public Valve[] getValves() {

        if (basic == null)
            return (valves);
        synchronized (valves) {
            Valve results[] = new Valve[valves.length + 1];
            System.arraycopy(valves, 0, results, 0, valves.length);
            results[valves.length] = basic;
            return (results);
        }

    }

    public ObjectName[] getValveObjectNames() {
        ObjectName oname[]=new ObjectName[valves.length + 1];
        for( int i=0; i<valves.length; i++ ) {
            if( valves[i] instanceof ValveBase )
                oname[i]=((ValveBase)valves[i]).getObjectName();
        }
        if( basic instanceof ValveBase )
            oname[valves.length]=((ValveBase)basic).getObjectName();
        return oname;
    }

    /**
     * Cause the specified request and response to be processed by the Valves
     * associated with this pipeline, until one of these valves causes the
     * response to be created and returned.  The implementation must ensure
     * that multiple simultaneous requests (on different threads) can be
     * processed through the same Pipeline without interfering with each
     * other's control flow.
     *
     * @param request The servlet request we are processing
     * @param response The servlet response we are creating
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet exception is thrown
     */
    public void invoke(Request request, Response response)
        throws IOException, ServletException {

        // Invoke the first Valve in this pipeline for this request
        //(new StandardPipelineValveContext()).invokeNext(request, response);

        StandardValveContext valveContext = 
            (StandardValveContext) request.getValveContext();
        if (valveContext == null) {
            valveContext = new StandardValveContext();
            request.setValveContext(valveContext);
        }

        valveContext.set(basic, valves);
        valveContext.invokeNext(request, response);
        valveContext.set(null, null);

    }


    /**
     * Remove the specified Valve from the pipeline associated with this
     * Container, if it is found; otherwise, do nothing.  If the Valve is
     * found and removed, the Valve's <code>setContainer(null)</code> method
     * will be called if it implements <code>Contained</code>.
     *
     * @param valve Valve to be removed
     */
    public void removeValve(Valve valve) {

        synchronized (valves) {

            // Locate this Valve in our list
            int j = -1;
            for (int i = 0; i < valves.length; i++) {
                if (valve == valves[i]) {
                    j = i;
                    break;
                }
            }
            if (j < 0)
                return;

            // Remove this valve from our list
            Valve results[] = new Valve[valves.length - 1];
            int n = 0;
            for (int i = 0; i < valves.length; i++) {
                if (i == j)
                    continue;
                results[n++] = valves[i];
            }
            valves = results;
            try {
                if (valve instanceof Contained)
                    ((Contained) valve).setContainer(null);
            } catch (Throwable t) {
                ;
            }

        }

        // Stop this valve if necessary
        if (started) {
            if (valve instanceof Lifecycle) {
                try {
                    ((Lifecycle) valve).stop();
                } catch (LifecycleException e) {
                    log.error("StandardPipeline.removeValve: stop: ", e);
                }
            }
            // Unregister the removed valave
            unregisterValve(valve);
        }

    }


    // ------------------------------------------------------ Protected Methods


    /**
     * Log a message on the Logger associated with our Container (if any).
     *
     * @param message Message to be logged
     */
    protected void log(String message) {

        Logger logger = null;
        if (container != null)
            logger = container.getLogger();
        if (logger != null)
            logger.log("StandardPipeline[" + container.getName() + "]: " +
                       message);
        else
            System.out.println("StandardPipeline[" + container.getName() +
                               "]: " + message);

    }


    /**
     * Log a message on the Logger associated with our Container (if any).
     *
     * @param message Message to be logged
     * @param throwable Associated exception
     */
    protected void log(String message, Throwable throwable) {

        Logger logger = null;
        if (container != null)
            logger = container.getLogger();
        if (logger != null)
            logger.log("StandardPipeline[" + container.getName() + "]: " +
                       message, throwable);
        else {
            System.out.println("StandardPipeline[" + container.getName() +
                               "]: " + message);
            throwable.printStackTrace(System.out);
        }

    }

}