standardwrapper.java

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

        if (swallowOutput) {
            SystemLogHandler.startCapture();
        }

        // Call the servlet destroy() method
        try {
            instanceSupport.fireInstanceEvent
              (InstanceEvent.BEFORE_DESTROY_EVENT, instance);

            Thread.currentThread().setContextClassLoader(classLoader);
            if( System.getSecurityManager() != null) {
                SecurityUtil.doAsPrivilege("destroy",
                                           instance);
                SecurityUtil.remove(instance);                           
            } else {
                instance.destroy();
            }

            instanceSupport.fireInstanceEvent
              (InstanceEvent.AFTER_DESTROY_EVENT, instance);
        } catch (Throwable t) {
            instanceSupport.fireInstanceEvent
              (InstanceEvent.AFTER_DESTROY_EVENT, instance, t);
            instance = null;
            instancePool = null;
            nInstances = 0;
            fireContainerEvent("unload", this);
            unloading = false;
            throw new ServletException
                (sm.getString("standardWrapper.destroyException", getName()),
                 t);
        } finally {
            // restore the context ClassLoader
            Thread.currentThread().setContextClassLoader(oldCtxClassLoader);
            // Write captured output
            if (swallowOutput) {
                String log = SystemLogHandler.stopCapture();
                if (log != null && log.length() > 0) {
                    if (getServletContext() != null) {
                        getServletContext().log(log);
                    } else {
                        out.println(log);
                    }
                }
            }
        }

        // Deregister the destroyed instance
        instance = null;

        if (singleThreadModel && (instancePool != null)) {
            try {
                Thread.currentThread().setContextClassLoader(classLoader);
                while (!instancePool.isEmpty()) {
                    if( System.getSecurityManager() != null) {
                        SecurityUtil.doAsPrivilege("destroy",
                                                   ((Servlet) instancePool.pop()));
                        SecurityUtil.remove(instance);                           
                    } else {
                        ((Servlet) instancePool.pop()).destroy();
                    }
                }
            } catch (Throwable t) {
                instancePool = null;
                nInstances = 0;
                unloading = false;
                fireContainerEvent("unload", this);
                throw new ServletException
                    (sm.getString("standardWrapper.destroyException",
                                  getName()), t);
            } finally {
                // restore the context ClassLoader
                Thread.currentThread().setContextClassLoader
                    (oldCtxClassLoader);
            }
            instancePool = null;
            nInstances = 0;
        }

        singleThreadModel = false;

        unloading = false;
        fireContainerEvent("unload", this);

    }


    // -------------------------------------------------- ServletConfig Methods


    /**
     * Return the initialization parameter value for the specified name,
     * if any; otherwise return <code>null</code>.
     *
     * @param name Name of the initialization parameter to retrieve
     */
    public String getInitParameter(String name) {

        return (findInitParameter(name));

    }


    /**
     * Return the set of initialization parameter names defined for this
     * servlet.  If none are defined, an empty Enumeration is returned.
     */
    public Enumeration getInitParameterNames() {

        synchronized (parameters) {
            return (new Enumerator(parameters.keySet()));
        }

    }


    /**
     * Return the servlet context with which this servlet is associated.
     */
    public ServletContext getServletContext() {

        if (parent == null)
            return (null);
        else if (!(parent instanceof Context))
            return (null);
        else
            return (((Context) parent).getServletContext());

    }


    /**
     * Return the name of this servlet.
     */
    public String getServletName() {

        return (getName());

    }

    public long getProcessingTime() {
        return swValve.getProcessingTime();
    }

    public void setProcessingTime(long processingTime) {
        swValve.setProcessingTime(processingTime);
    }

    public long getMaxTime() {
        return swValve.getMaxTime();
    }

    public void setMaxTime(long maxTime) {
        swValve.setMaxTime(maxTime);
    }

    public long getMinTime() {
        return swValve.getMinTime();
    }

    public void setMinTime(long minTime) {
        swValve.setMinTime(minTime);
    }

    public int getRequestCount() {
        return swValve.getRequestCount();
    }

    public void setRequestCount(int requestCount) {
        swValve.setRequestCount(requestCount);
    }

    public int getErrorCount() {
        return swValve.getErrorCount();
    }

    public void setErrorCount(int errorCount) {
           swValve.setErrorCount(errorCount);
    }

    /**
     * Increment the error count used for monitoring.
     */
    public void incrementErrorCount(){
        swValve.setErrorCount(swValve.getErrorCount() + 1);
    }

    public long getLoadTime() {
        return loadTime;
    }

    public void setLoadTime(long loadTime) {
        this.loadTime = loadTime;
    }

    public int getClassLoadTime() {
        return classLoadTime;
    }

    // -------------------------------------------------------- Package Methods


    // -------------------------------------------------------- Private Methods


    /**
     * Add a default Mapper implementation if none have been configured
     * explicitly.
     *
     * @param mapperClass Java class name of the default Mapper
     */
    protected void addDefaultMapper(String mapperClass) {

        ;       // No need for a default Mapper on a Wrapper

    }


    /**
     * Return <code>true</code> if the specified class name represents a
     * container provided servlet class that should be loaded by the
     * server class loader.
     *
     * @param classname Name of the class to be checked
     */
    private boolean isContainerProvidedServlet(String classname) {

        if (classname.startsWith("org.apache.catalina.")) {
            return (true);
        }
        try {
            Class clazz =
                this.getClass().getClassLoader().loadClass(classname);
            return (ContainerServlet.class.isAssignableFrom(clazz));
        } catch (Throwable t) {
            return (false);
        }

    }


    /**
     * Return <code>true</code> if loading this servlet is allowed.
     */
    private boolean isServletAllowed(Object servlet) {

        if (servlet instanceof ContainerServlet) {
            if (((Context) getParent()).getPrivileged()
                || (servlet.getClass().getName().equals
                    ("org.apache.catalina.servlets.InvokerServlet"))) {
                return (true);
            } else {
                return (false);
            }
        }

        return (true);

    }


    /**
     * Log the abbreviated name of this Container for logging messages.
     */
    protected String logName() {

        StringBuffer sb = new StringBuffer("StandardWrapper[");
        if (getParent() != null)
            sb.append(getParent().getName());
        else
            sb.append("null");
        sb.append(':');
        sb.append(getName());
        sb.append(']');
        return (sb.toString());

    }


    // ------------------------------------------------------ Lifecycle Methods


    /**
     * Start this component, pre-loading the servlet if the load-on-startup
     * value is set appropriately.
     *
     * @exception LifecycleException if a fatal error occurs during startup
     */
    public void start() throws LifecycleException {
    
        // Send j2ee.state.starting notification 
        if (this.getObjectName() != null) {
            Notification notification = new Notification("j2ee.state.starting", 
                                                        this.getObjectName(), 
                                                        sequenceNumber++);
            broadcaster.sendNotification(notification);
        }
        
        // Start up this component
        super.start();

        if( oname != null )
            registerJMX((StandardContext)getParent());
        
        // Load and initialize an instance of this servlet if requested
        // MOVED TO StandardContext START() METHOD

        setAvailable(0L);
        
        // Send j2ee.state.running notification 
        if (this.getObjectName() != null) {
            Notification notification = 
                new Notification("j2ee.state.running", this.getObjectName(), 
                                sequenceNumber++);
            broadcaster.sendNotification(notification);
        }

    }


    /**
     * Stop this component, gracefully shutting down the servlet if it has
     * been initialized.
     *
     * @exception LifecycleException if a fatal error occurs during shutdown
     */
    public void stop() throws LifecycleException {

        setAvailable(Long.MAX_VALUE);
        
        // Send j2ee.state.stopping notification 
        if (this.getObjectName() != null) {
            Notification notification = 
                new Notification("j2ee.state.stopping", this.getObjectName(), 
                                sequenceNumber++);
            broadcaster.sendNotification(notification);
        }
        
        // Shut down our servlet instance (if it has been initialized)
        try {
            unload();
        } catch (ServletException e) {
            getServletContext().log(sm.getString
                      ("standardWrapper.unloadException", getName()), e);
        }

        // Shut down this component
        super.stop();

        // Send j2ee.state.stoppped notification 
        if (this.getObjectName() != null) {
            Notification notification = 
                new Notification("j2ee.state.stopped", this.getObjectName(), 
                                sequenceNumber++);
            broadcaster.sendNotification(notification);
        }
        
        if( oname != null ) {
            Registry.getRegistry(null, null).unregisterComponent(oname);
            
            // Send j2ee.object.deleted notification 
            Notification notification = 
                new Notification("j2ee.object.deleted", this.getObjectName(), 
                                sequenceNumber++);
            broadcaster.sendNotification(notification);
        }
    }

    protected void registerJMX(StandardContext ctx) {
        try {
            // it should be full name
            String parentName=ctx.getName();
            String hostName=ctx.getParent().getName();
            String webMod= "//" + ((hostName==null)? "DEFAULT" :hostName ) +
                    (("".equals(parentName) ) ? "/" : parentName );
            String onameStr=ctx.getDomain() + 
                    ":j2eeType=Servlet,name=" + getName() + ",WebModule=" +
                    webMod + ",J2EEApplication=" +
                    ctx.getJ2EEApplication() + ",J2EEServer=" +
                    ctx.getJ2EEServer();
            
            oname=new ObjectName(onameStr);
            controller=oname;
            Registry.getRegistry(null, null)
                .registerComponent(this, oname, null );
            
            // Send j2ee.object.created notification 
            if (this.getObjectName() != null) {
                Notification notification = new Notification(
                                                "j2ee.object.created", 
                                                this.getObjectName(), 
                                                sequenceNumber++);
                broadcaster.sendNotification(notification);
            }
        } catch( Exception ex ) {
            log.info("Error registering servlet with jmx " + this);
        }
    }
    

    // ------------------------------------------------------------- Attributes
        
        
    public boolean isEventProvider() {
        return false;
    }
    
    public boolean isStateManageable() {
        return false;
    }
    
    public boolean isStatisticsProvider() {
        return false;
    }
        
        
}