/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013-2015 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
* http://glassfish.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 org.glassfish.jersey.server.mvc.jsp;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Reader;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.inject.Inject;
import javax.inject.Provider;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.glassfish.jersey.internal.util.collection.Ref;
import org.glassfish.jersey.message.internal.TracingLogger;
import org.glassfish.jersey.server.ContainerException;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.mvc.Viewable;
import org.glassfish.jersey.server.mvc.jsp.internal.LocalizationMessages;
import org.glassfish.jersey.server.mvc.spi.AbstractTemplateProcessor;
import org.glassfish.jersey.server.mvc.spi.ResolvedViewable;
/**
* A JSP template processor able to process resources obtained through {@link ServletContext servlet context}. This template
* processor does not support caching of template reference objects (in Jersey) or passing custom template object factory.
*
* @author Paul Sandoz
* @author Michal Gajdos
*/
final class JspTemplateProcessor extends AbstractTemplateProcessor<String> {
@Inject
private Provider<Ref<HttpServletRequest>> requestProviderRef;
@Inject
private Provider<Ref<HttpServletResponse>> responseProviderRef;
@Inject
private Provider<ContainerRequest> containerRequestProvider;
/**
* Create an instance of this processor with injected {@link Configuration config} and
* (optional) {@link ServletContext servlet context}.
*
* @param config configuration to configure this processor from.
* @param servletContext (optional) servlet context to obtain template resources from.
*/
@Inject
public JspTemplateProcessor(final Configuration config, final ServletContext servletContext) {
super(config, servletContext, "jsp", "jsp");
}
@Override
protected String resolve(final String templatePath, final Reader reader) throws Exception {
return templatePath;
}
@Override
public void writeTo(final String templateReference, final Viewable viewable, final MediaType mediaType,
final MultivaluedMap<String, Object> httpHeaders, final OutputStream out) throws IOException {
if (!(viewable instanceof ResolvedViewable)) {
// This should not happen with default MVC message body writer implementation
throw new IllegalArgumentException(LocalizationMessages.ERROR_VIEWABLE_INCORRECT_INSTANCE());
}
// SPI could supply instance of ResolvedViewable but we would like to keep the backward
// compatibility, so the cast is here.
final ResolvedViewable resolvedViewable = (ResolvedViewable) viewable;
final TracingLogger tracingLogger = TracingLogger.getInstance(containerRequestProvider.get().getPropertiesDelegate());
if (tracingLogger.isLogEnabled(MvcJspEvent.JSP_FORWARD)) {
tracingLogger.log(MvcJspEvent.JSP_FORWARD, templateReference, resolvedViewable.getModel());
}
final RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(templateReference);
if (dispatcher == null) {
throw new ContainerException(LocalizationMessages.NO_REQUEST_DISPATCHER_FOR_RESOLVED_PATH(templateReference));
}
final RequestDispatcher wrapper = new RequestDispatcherWrapper(dispatcher, getBasePath(), resolvedViewable);
// OutputStream and Writer for HttpServletResponseWrapper.
final ServletOutputStream responseStream = new ServletOutputStream() {
@Override
public void write(final int b) throws IOException {
out.write(b);
}
};
final PrintWriter responseWriter = new PrintWriter(new OutputStreamWriter(responseStream, getEncoding()));
try {
wrapper.forward(requestProviderRef.get().get(), new HttpServletResponseWrapper(responseProviderRef.get().get()) {
@Override
public ServletOutputStream getOutputStream() throws IOException {
return responseStream;
}
@Override
public PrintWriter getWriter() throws IOException {
return responseWriter;
}
});
} catch (final Exception e) {
throw new ContainerException(e);
} finally {
responseWriter.flush();
}
}
/**
* MVC-JSP side tracing events.
*/
private static enum MvcJspEvent implements TracingLogger.Event {
JSP_FORWARD(TracingLogger.Level.SUMMARY, "MVC", "Forwarding view to JSP page [%s], model %s");
private final TracingLogger.Level level;
private final String category;
private final String messageFormat;
private MvcJspEvent(final TracingLogger.Level level, final String category, final String messageFormat) {
this.level = level;
this.category = category;
this.messageFormat = messageFormat;
}
@Override
public String category() {
return category;
}
@Override
public TracingLogger.Level level() {
return level;
}
@Override
public String messageFormat() {
return messageFormat;
}
}
}