Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2015 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.servlet.internal;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.servlet.http.HttpServletResponse;
import org.glassfish.jersey.server.ContainerException;
import org.glassfish.jersey.server.ContainerResponse;
import org.glassfish.jersey.server.internal.JerseyRequestTimeoutHandler;
import org.glassfish.jersey.server.spi.ContainerResponseWriter;
import org.glassfish.jersey.servlet.spi.AsyncContextDelegate;
import jersey.repackaged.com.google.common.util.concurrent.SettableFuture;
/**
* An internal implementation of {@link ContainerResponseWriter} for Servlet containers.
* The writer depends on provided {@link AsyncContextDelegate} to support async functionality.
*
* @author Paul Sandoz
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
* @author Martin Matula
* @author Libor Kramolis (libor.kramolis at oracle.com)
*/
public class ResponseWriter implements ContainerResponseWriter {
private static final Logger LOGGER = Logger.getLogger(ResponseWriter.class.getName());
private final HttpServletResponse response;
/**
* Cached value of configuration property
* {@link org.glassfish.jersey.servlet.ServletProperties#FILTER_FORWARD_ON_404}.
*/
private final boolean useSetStatusOn404;
/**
* Cached value of configuration property
* {@link org.glassfish.jersey.server.ServerProperties#RESPONSE_SET_STATUS_OVER_SEND_ERROR}.
* If {@code true} method {@link HttpServletResponse#setStatus} is used over {@link HttpServletResponse#sendError}.
*/
private final boolean configSetStatusOverSendError;
private final SettableFuture responseContext;
private final AsyncContextDelegate asyncExt;
private final JerseyRequestTimeoutHandler requestTimeoutHandler;
/**
* Creates a new instance to write a single Jersey response.
*
* @param useSetStatusOn404 true if status should be written explicitly when 404 is returned
* @param configSetStatusOverSendError if {@code true} method {@link HttpServletResponse#setStatus} is used over
* {@link HttpServletResponse#sendError}
* @param response original HttpResponseRequest
* @param asyncExt delegate to use for async features implementation
* @param timeoutTaskExecutor Jersey runtime executor used for background execution of timeout
* handling tasks.
*/
public ResponseWriter(final boolean useSetStatusOn404,
final boolean configSetStatusOverSendError,
final HttpServletResponse response,
final AsyncContextDelegate asyncExt,
final ScheduledExecutorService timeoutTaskExecutor) {
this.useSetStatusOn404 = useSetStatusOn404;
this.configSetStatusOverSendError = configSetStatusOverSendError;
this.response = response;
this.asyncExt = asyncExt;
this.responseContext = SettableFuture.create();
this.requestTimeoutHandler = new JerseyRequestTimeoutHandler(this, timeoutTaskExecutor);
}
@Override
public boolean suspend(final long timeOut, final TimeUnit timeUnit, final TimeoutHandler timeoutHandler) {
try {
// Suspend the servlet.
asyncExt.suspend();
} catch (final IllegalStateException ex) {
LOGGER.log(Level.WARNING, LocalizationMessages.SERVLET_REQUEST_SUSPEND_FAILED(), ex);
return false;
}
// Suspend the internal request timeout handler.
return requestTimeoutHandler.suspend(timeOut, timeUnit, timeoutHandler);
}
@Override
public void setSuspendTimeout(final long timeOut, final TimeUnit timeUnit) throws IllegalStateException {
requestTimeoutHandler.setSuspendTimeout(timeOut, timeUnit);
}
@Override
public OutputStream writeResponseStatusAndHeaders(final long contentLength, final ContainerResponse responseContext)
throws ContainerException {
this.responseContext.set(responseContext);
// first set the content length, so that if headers have an explicit value, it takes precedence over this one
if (responseContext.hasEntity() && contentLength != -1 && contentLength < Integer.MAX_VALUE) {
response.setContentLength((int) contentLength);
}
// Note that the writing of headers MUST be performed before
// the invocation of sendError as on some Servlet implementations
// modification of the response headers will have no effect
// after the invocation of sendError.
final MultivaluedMap headers = getResponseContext().getStringHeaders();
for (final Map.Entry> e : headers.entrySet()) {
final Iterator it = e.getValue().iterator();
if (!it.hasNext()) {
continue;
}
final String header = e.getKey();
if (response.containsHeader(header)) {
// replace any headers previously set with values from Jersey container response.
response.setHeader(header, it.next());
}
while (it.hasNext()) {
response.addHeader(header, it.next());
}
}
final String reasonPhrase = responseContext.getStatusInfo().getReasonPhrase();
if (reasonPhrase != null) {
response.setStatus(responseContext.getStatus(), reasonPhrase);
} else {
response.setStatus(responseContext.getStatus());
}
if (!responseContext.hasEntity()) {
return null;
} else {
try {
final OutputStream outputStream = response.getOutputStream();
// delegating output stream prevents closing the underlying servlet output stream,
// so that any Servlet filters in the chain can still write to the response after us.
return new NonCloseableOutputStreamWrapper(outputStream);
} catch (final IOException e) {
throw new ContainerException(e);
}
}
}
@Override
public void commit() {
try {
callSendError();
} finally {
requestTimeoutHandler.close();
asyncExt.complete();
}
}
/**
* According to configuration and response processing status it calls {@link HttpServletResponse#sendError(int, String)} over
* common {@link HttpServletResponse#setStatus(int)}.
*/
private void callSendError() {
// call HttpServletResponse.sendError in case:
// - property ServerProperties#RESPONSE_SET_STATUS_OVER_SEND_ERROR == false (default)
// - response NOT yet committed
// - response entity NOT set
// - response status code is 4xx or 5xx
// plus in case of Jersey as a Filter (JaaF):
// - response status code is 404 (Not Found)
// - property ServletProperties#FILTER_FORWARD_ON_404 == false (default)
if (!configSetStatusOverSendError && !response.isCommitted()) {
final ContainerResponse responseContext = getResponseContext();
final boolean hasEntity = responseContext.hasEntity();
final Response.StatusType status = responseContext.getStatusInfo();
if (!hasEntity && status != null && status.getStatusCode() >= 400
&& !(useSetStatusOn404 && status == Response.Status.NOT_FOUND)) {
final String reason = status.getReasonPhrase();
try {
if (reason == null || reason.isEmpty()) {
response.sendError(status.getStatusCode());
} else {
response.sendError(status.getStatusCode(), reason);
}
} catch (final IOException ex) {
throw new ContainerException(
LocalizationMessages.EXCEPTION_SENDING_ERROR_RESPONSE(status, reason != null ? reason : "--"),
ex);
}
}
}
}
@Override
public void failure(final Throwable error) {
try {
if (!response.isCommitted()) {
try {
if (configSetStatusOverSendError) {
response.reset();
//noinspection deprecation
response.setStatus(Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(), "Request failed.");
} else {
response.sendError(Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(), "Request failed.");
}
} catch (final IllegalStateException ex) {
// a race condition externally committing the response can still occur...
LOGGER.log(Level.FINER, "Unable to reset failed response.", ex);
} catch (final IOException ex) {
throw new ContainerException(LocalizationMessages.EXCEPTION_SENDING_ERROR_RESPONSE(
Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(), "Request failed."), ex);
} finally {
asyncExt.complete();
}
}
} finally {
requestTimeoutHandler.close();
rethrow(error);
}
}
@Override
public boolean enableResponseBuffering() {
return true;
}
/**
* Rethrow the original exception as required by JAX-RS, 3.3.4
*
* @param error throwable to be re-thrown
*/
private void rethrow(final Throwable error) {
if (error instanceof RuntimeException) {
throw (RuntimeException) error;
} else {
throw new ContainerException(error);
}
}
/**
* Provides response status captured when
* {@link #writeResponseStatusAndHeaders(long, org.glassfish.jersey.server.ContainerResponse)} has been invoked.
* The method will block if the write method has not been called yet.
*
* @return response status
*/
public int getResponseStatus() {
return getResponseContext().getStatus();
}
public boolean responseContextResolved() {
return responseContext.isDone();
}
public ContainerResponse getResponseContext() {
try {
return responseContext.get();
} catch (InterruptedException | ExecutionException ex) {
throw new ContainerException(ex);
}
}
private static class NonCloseableOutputStreamWrapper extends OutputStream {
private final OutputStream delegate;
public NonCloseableOutputStreamWrapper(final OutputStream delegate) {
this.delegate = delegate;
}
@Override
public void write(final int b) throws IOException {
delegate.write(b);
}
@Override
public void write(final byte[] b) throws IOException {
delegate.write(b);
}
@Override
public void write(final byte[] b, final int off, final int len) throws IOException {
delegate.write(b, off, len);
}
@Override
public void flush() throws IOException {
delegate.flush();
}
@Override
public void close() throws IOException {
// do not close - let the servlet container close the stream
}
}
}
