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Jersey core server implementation
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2014 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:
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* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package org.glassfish.jersey.server;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.net.URI;
import java.util.Date;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.EntityTag;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Link;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.NewCookie;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.message.internal.OutboundJaxrsResponse;
import org.glassfish.jersey.message.internal.OutboundMessageContext;
import org.glassfish.jersey.message.internal.Statuses;
/**
* Jersey container response context.
*
* @author Marek Potociar (marek.potociar at oracle.com)
*/
public class ContainerResponse implements ContainerResponseContext {
private Response.StatusType status;
private final ContainerRequest requestContext;
private final OutboundMessageContext messageContext;
private boolean mappedFromException;
private boolean closed;
/**
* Create a new Jersey container response context.
*
* @param requestContext associated container request context.
* @param response response instance initializing the response context.
*/
public ContainerResponse(final ContainerRequest requestContext, final Response response) {
this(requestContext, OutboundJaxrsResponse.from(response));
}
/**
* Create a new Jersey container response context.
*
* @param requestContext associated container request context.
* @param response response instance initializing the response context.
*/
ContainerResponse(final ContainerRequest requestContext, final OutboundJaxrsResponse response) {
this.requestContext = requestContext;
this.requestContext.inResponseProcessing();
this.status = response.getStatusInfo();
this.messageContext = response.getContext();
final String varyValue = requestContext.getVaryValue();
if (varyValue != null && !this.messageContext.getHeaders().containsKey(HttpHeaders.VARY)) {
/**
* Add a Vary header using the value computed in the request if present
* and if the Vary header was not explicitly set in the response already.
*/
this.messageContext.getHeaders().add(HttpHeaders.VARY, varyValue);
}
}
/**
* Returns true if the response is result of the exception (for example created during
* {@link javax.ws.rs.ext.ExceptionMapper exception mapping}).
*
* @return True if this response was created based on the exception, false otherwise.
*/
public boolean isMappedFromException() {
return mappedFromException;
}
/**
* Sets the flag indicating whether the response was created based on the exception.
* @param mappedFromException True if this exception if result of the exception (for example result of
* {@link javax.ws.rs.ext.ExceptionMapper exception mapping}).
*/
public void setMappedFromException(final boolean mappedFromException) {
this.mappedFromException = mappedFromException;
}
@Override
public int getStatus() {
return status.getStatusCode();
}
@Override
public void setStatus(final int code) {
this.status = Statuses.from(code);
}
@Override
public void setStatusInfo(final Response.StatusType status) {
if (status == null) {
throw new NullPointerException("Response status must not be 'null'");
}
this.status = status;
}
@Override
public Response.StatusType getStatusInfo() {
return status;
}
/**
* Get the associated container request context paired with this response context.
*
* @return associated container request context.
*/
public ContainerRequest getRequestContext() {
return requestContext;
}
@Override
public Map getCookies() {
return messageContext.getResponseCookies();
}
/**
* Get the wrapped response message context.
*
* @return wrapped response message context.
*/
public OutboundMessageContext getWrappedMessageContext() {
return messageContext;
}
@Override
public String getHeaderString(final String name) {
return messageContext.getHeaderString(name);
}
@Override
public MultivaluedMap getHeaders() {
return messageContext.getHeaders();
}
@Override
public MultivaluedMap getStringHeaders() {
return messageContext.getStringHeaders();
}
@Override
public Date getDate() {
return messageContext.getDate();
}
@Override
public Locale getLanguage() {
return messageContext.getLanguage();
}
@Override
public MediaType getMediaType() {
return messageContext.getMediaType();
}
@Override
public Set getAllowedMethods() {
return messageContext.getAllowedMethods();
}
@Override
public int getLength() {
return messageContext.getLength();
}
@Override
public EntityTag getEntityTag() {
return messageContext.getEntityTag();
}
@Override
public Date getLastModified() {
return messageContext.getLastModified();
}
@Override
public URI getLocation() {
return messageContext.getLocation();
}
@Override
public Set getLinks() {
return messageContext.getLinks();
}
@Override
public boolean hasLink(final String relation) {
return messageContext.hasLink(relation);
}
@Override
public Link getLink(final String relation) {
return messageContext.getLink(relation);
}
@Override
public Link.Builder getLinkBuilder(final String relation) {
return messageContext.getLinkBuilder(relation);
}
@Override
public boolean hasEntity() {
return messageContext.hasEntity();
}
@Override
public Object getEntity() {
return messageContext.getEntity();
}
/**
* Set a new message message entity.
*
* @param entity entity object.
* @see javax.ws.rs.ext.MessageBodyWriter
*/
public void setEntity(final Object entity) {
messageContext.setEntity(entity);
}
/**
* Set a new message message entity.
*
* @param entity entity object.
* @param annotations annotations attached to the entity.
* @see javax.ws.rs.ext.MessageBodyWriter
*/
public void setEntity(final Object entity, final Annotation[] annotations) {
messageContext.setEntity(entity, annotations);
}
/**
* Set a new message message entity.
*
* @param entity entity object.
* @param type declared entity class.
* @param annotations annotations attached to the entity.
* @see javax.ws.rs.ext.MessageBodyWriter
*/
public void setEntity(final Object entity, final Type type, final Annotation[] annotations) {
messageContext.setEntity(entity, type, annotations);
}
@Override
public void setEntity(final Object entity, final Annotation[] annotations, final MediaType mediaType) {
messageContext.setEntity(entity, annotations, mediaType);
}
/**
* Set the message content media type.
*
* @param mediaType message content media type.
*/
public void setMediaType(final MediaType mediaType) {
messageContext.setMediaType(mediaType);
}
@Override
public Class getEntityClass() {
return messageContext.getEntityClass();
}
@Override
public Type getEntityType() {
return messageContext.getEntityType();
}
/**
* Set the message entity type information.
*
* This method overrides any computed or previously set entity type information.
*
* @param type overriding message entity type.
*/
public void setEntityType(final Type type) {
Type t = type;
if (type instanceof ParameterizedType) {
final ParameterizedType parameterizedType = (ParameterizedType) type;
if (parameterizedType.getRawType().equals(GenericEntity.class)) {
t = parameterizedType.getActualTypeArguments()[0];
}
}
messageContext.setEntityType(t);
}
@Override
public Annotation[] getEntityAnnotations() {
return messageContext.getEntityAnnotations();
}
/**
* Set the annotations attached to the entity.
*
* @param annotations entity annotations.
*/
public void setEntityAnnotations(final Annotation[] annotations) {
messageContext.setEntityAnnotations(annotations);
}
@Override
public OutputStream getEntityStream() {
return messageContext.getEntityStream();
}
@Override
public void setEntityStream(final OutputStream outputStream) {
messageContext.setEntityStream(outputStream);
}
/**
* Set the output stream provider callback.
*
* This method must be called before first bytes are written to the {@link #getEntityStream() entity stream}.
*
* @param streamProvider non-{@code null} output stream provider.
*/
public void setStreamProvider(final OutboundMessageContext.StreamProvider streamProvider) {
messageContext.setStreamProvider(streamProvider);
}
/**
* Enable a buffering of serialized entity. The buffering will be configured from configuration. The property
* determining the size of the buffer is {@link org.glassfish.jersey.CommonProperties#OUTBOUND_CONTENT_LENGTH_BUFFER}.
*
* The buffering functionality is by default disabled and could be enabled by calling this method. In this case
* this method must be called before first bytes are written to the {@link #getEntityStream() entity stream}.
*
* @param configuration runtime configuration.
*/
public void enableBuffering(final Configuration configuration) {
messageContext.enableBuffering(configuration);
}
/**
* Commit the {@link #getEntityStream() entity stream} unless already committed.
*
* @throws IOException in case of the IO error.
*/
public void commitStream() throws IOException {
messageContext.commitStream();
}
/**
* Returns {@code true} if the entity stream has been committed.
* @return {@code true} if the entity stream has been committed. Otherwise returns {@code false}.
*/
public boolean isCommitted() {
return messageContext.isCommitted();
}
/**
* Closes the response. Flushes and closes the entity stream, frees up container resources associated with
* the corresponding request.
*/
public void close() {
if (!closed) {
closed = true;
messageContext.close();
requestContext.getResponseWriter().commit();
}
}
/**
* Returns {@code true} if the response entity is a {@link ChunkedOutput} instance.
* @return {@code true} if the entity is a {@link ChunkedOutput} instance, {@code false} otherwise.
*/
public boolean isChunked() {
return hasEntity() && ChunkedOutput.class.isAssignableFrom(getEntity().getClass());
}
}