com.sun.faces.context.ExceptionHandlerImpl Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of javax.faces Show documentation
Show all versions of javax.faces Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.context;
import java.util.LinkedList;
import java.util.Collections;
import java.util.Iterator;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.application.ProjectStage;
import javax.faces.component.UIComponent;
import javax.faces.context.ExceptionHandler;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ExceptionQueuedEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.ExceptionQueuedEventContext;
import javax.faces.event.PhaseId;
import javax.el.ELException;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.renderkit.RenderKitUtils;
import javax.faces.context.ExternalContext;
/**
*
* The default implementation of {@link ExceptionHandler} for JSF 2.0.
*
*
*
* As an implementation note, if changes going forward are required here,
* review the ExceptionHandler implementation within
* javax.faces.webapp.PreJsf2ExceptionHandlerFactory. The code
* is, in most cases, quite similar.
*
*
*/
public class ExceptionHandlerImpl extends ExceptionHandler {
private static final Logger LOGGER = FacesLogger.CONTEXT.getLogger();
private static final String LOG_BEFORE_KEY =
"jsf.context.exception.handler.log_before";
private static final String LOG_AFTER_KEY =
"jsf.context.exception.handler.log_after";
private static final String LOG_KEY =
"jsf.context.exception.handler.log";
public static final java.util.logging.Level INCIDENT_ERROR =
Level.parse(Integer.toString(Level.SEVERE.intValue() + 100));
private LinkedList unhandledExceptions;
private LinkedList handledExceptions;
private ExceptionQueuedEvent handled;
private boolean errorPagePresent;
// ------------------------------------------------------------ Constructors
public ExceptionHandlerImpl() {
this.errorPagePresent = true;
}
public ExceptionHandlerImpl(boolean errorPagePresent) {
this.errorPagePresent = errorPagePresent;
}
// ------------------------------------------- Methods from ExceptionHandler
public ExceptionQueuedEvent getHandledExceptionQueuedEvent() {
return handled;
}
/**
* @see javax.faces.context.ExceptionHandler#handle()
*/
@SuppressWarnings({"ThrowableInstanceNeverThrown"})
public void handle() throws FacesException {
for (Iterator i = getUnhandledExceptionQueuedEvents().iterator(); i.hasNext(); ) {
ExceptionQueuedEvent event = i.next();
ExceptionQueuedEventContext context = (ExceptionQueuedEventContext) event.getSource();
try {
Throwable t = context.getException();
if (isRethrown(t)) {
handled = event;
Throwable unwrapped = getRootCause(t);
if (unwrapped != null) {
throwIt(context.getContext(),
new FacesException(unwrapped.getMessage(), unwrapped));
} else {
if (t instanceof FacesException) {
throwIt(context.getContext(), (FacesException) t);
} else {
throwIt(context.getContext(),
new FacesException(t.getMessage(), t));
}
}
if (LOGGER.isLoggable(INCIDENT_ERROR)) {
log(context);
}
} else {
log(context);
}
} finally {
if (handledExceptions == null) {
handledExceptions = new LinkedList();
}
handledExceptions.add(event);
i.remove();
}
}
}
/**
* @see javax.faces.context.ExceptionHandler#isListenerForSource(Object)
*/
public boolean isListenerForSource(Object source) {
return (source instanceof ExceptionQueuedEventContext);
}
/**
* @see javax.faces.context.ExceptionHandler#processEvent(javax.faces.event.SystemEvent)
*/
public void processEvent(SystemEvent event) throws AbortProcessingException {
if (event != null) {
if (unhandledExceptions == null) {
unhandledExceptions = new LinkedList();
}
unhandledExceptions.add((ExceptionQueuedEvent) event);
}
}
/**
* @see ExceptionHandler#getRootCause(Throwable)
*/
public Throwable getRootCause(Throwable t) {
if (t == null) {
return null;
}
if (shouldUnwrap(t.getClass())) {
Throwable root = t.getCause();
if (root != null) {
Throwable tmp = getRootCause(root);
if (tmp == null) {
return root;
} else {
return tmp;
}
} else {
return t;
}
}
return t;
}
/**
* @see javax.faces.context.ExceptionHandler#getUnhandledExceptionQueuedEvents()
*/
public Iterable getUnhandledExceptionQueuedEvents() {
return ((unhandledExceptions != null)
? unhandledExceptions
: Collections.emptyList());
}
/**
* @see javax.faces.context.ExceptionHandler#getHandledExceptionQueuedEvents()
*/
public Iterable getHandledExceptionQueuedEvents() {
return ((handledExceptions != null)
? handledExceptions
: Collections.emptyList());
}
// --------------------------------------------------------- Private Methods
private void throwIt(FacesContext ctx, FacesException fe) {
boolean isDevelopment = ctx.isProjectStage(ProjectStage.Development);
ExternalContext extContext = ctx.getExternalContext();
Throwable wrapped = fe.getCause();
try {
extContext.responseReset();
} catch (Exception e) {
if (wrapped instanceof IOException && wrapped.getMessage() != null &&
wrapped.getMessage().contains("Broken pipe")) {
// do nothing to emilinate the impact of "Broken pipe"
} else if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.log(Level.INFO, "Exception when handling error trying to reset the response.", wrapped);
}
}
if (null != wrapped && wrapped instanceof FacesFileNotFoundException) {
extContext.setResponseStatus(404);
} else {
extContext.setResponseStatus(500);
}
if (isDevelopment && !errorPagePresent) {
// RELEASE_PENDING_2_1
// thThe error page here will be text/html which means not all device
// types are going to render this properly. This should be addressed
// in 2.1
RenderKitUtils.renderHtmlErrorPage(ctx, fe);
} else {
if (isDevelopment) {
// store the view root where the exception occurred into the
// request scope so that the error page can display that component
// tree and not the one rendering the errorpage
ctx.getExternalContext().getRequestMap().put("com.sun.faces.error.view", ctx.getViewRoot());
}
throw fe;
}
}
/**
* @param c Throwable implementation class
* @return true if c is FacesException.class or
* ELException.class
*/
private boolean shouldUnwrap(Class c) {
return (FacesException.class.equals(c) || ELException.class.equals(c));
}
private boolean isRethrown(Throwable t) {
return (!(t instanceof AbortProcessingException));
}
private void log(ExceptionQueuedEventContext exceptionContext) {
UIComponent c = exceptionContext.getComponent();
boolean beforePhase = exceptionContext.inBeforePhase();
boolean afterPhase = exceptionContext.inAfterPhase();
PhaseId phaseId = exceptionContext.getPhaseId();
Throwable t = exceptionContext.getException();
String key = getLoggingKey(beforePhase, afterPhase);
// If both SEVERE and INCIDENT_ERROR are loggable, just use
// INCIDENT ERROR, otherwise just use SEVERE.
Level level = LOGGER.isLoggable(INCIDENT_ERROR) && LOGGER.isLoggable(Level.SEVERE) ? INCIDENT_ERROR : Level.SEVERE;
if (LOGGER.isLoggable(level)) {
LOGGER.log(level,
key,
new Object[] { t.getClass().getName(),
phaseId.toString(),
((c != null) ? c.getClientId(exceptionContext.getContext()) : ""),
t.getMessage()});
if (t.getMessage() != null) {
LOGGER.log(level, t.getMessage(), t);
} else {
LOGGER.log(level, "No associated message", t);
}
}
}
private String getLoggingKey(boolean beforePhase, boolean afterPhase) {
if (beforePhase) {
return LOG_BEFORE_KEY;
} else if (afterPhase) {
return LOG_AFTER_KEY;
} else {
return LOG_KEY;
}
}
}