com.sun.jersey.api.client.ClientResponse Maven / Gradle / Ivy
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package com.sun.jersey.api.client;
import com.sun.jersey.core.header.InBoundHeaders;
import com.sun.jersey.core.provider.CompletableReader;
import com.sun.jersey.core.util.ReaderWriter;
import com.sun.jersey.spi.MessageBodyWorkers;
import javax.ws.rs.core.EntityTag;
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 javax.ws.rs.core.Response.Status.Family;
import javax.ws.rs.core.Response.StatusType;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.RuntimeDelegate;
import javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.logging.Logger;
/**
* A client (in-bound) HTTP response.
*
* @author [email protected]
*/
public class ClientResponse {
private static final Logger LOGGER = Logger.getLogger(ClientResponse.class.getName());
/**
* Status codes defined by HTTP, see
* {@link HTTP/1.1 documentation}.
* Additional status codes can be added by applications by creating an implementation of {@link StatusType}.
*/
public enum Status implements StatusType {
/**
* 200 OK, see {@link HTTP/1.1 documentation}.
*/
OK(200, "OK"),
/**
* 201 Created, see {@link HTTP/1.1 documentation}.
*/
CREATED(201, "Created"),
/**
* 202 Accepted, see {@link HTTP/1.1 documentation}.
*/
ACCEPTED(202, "Accepted"),
/**
* 202 Accepted, see {@link HTTP/1.1 documentation}.
*/
NON_AUTHORITIVE_INFORMATION(203, "Non-Authoritative Information"),
/**
* 204 No Content, see {@link HTTP/1.1 documentation}.
*/
NO_CONTENT(204, "No Content"),
/**
* 205 Reset Content, see {@link HTTP/1.1 documentation}.
*/
RESET_CONTENT(205, "Reset Content"),
/**
* 206 Reset Content, see {@link HTTP/1.1 documentation}.
*/
PARTIAL_CONTENT(206, "Partial Content"),
/**
* 301 Moved Permantely, see {@link HTTP/1.1 documentation}.
*/
MOVED_PERMANENTLY(301, "Moved Permanently"),
/**
* 302 Found, see {@link HTTP/1.1 documentation}.
*/
FOUND(302, "Found"),
/**
* 303 See Other, see {@link HTTP/1.1 documentation}.
*/
SEE_OTHER(303, "See Other"),
/**
* 304 Not Modified, see {@link HTTP/1.1 documentation}.
*/
NOT_MODIFIED(304, "Not Modified"),
/**
* 305 Use Proxy, see {@link HTTP/1.1 documentation}.
*/
USE_PROXY(305, "Use Proxy"),
/**
* 307 Temporary Redirect, see {@link HTTP/1.1 documentation}.
*/
TEMPORARY_REDIRECT(307, "Temporary Redirect"),
/**
* 400 Bad Request, see {@link HTTP/1.1 documentation}.
*/
BAD_REQUEST(400, "Bad Request"),
/**
* 401 Unauthorized, see {@link HTTP/1.1 documentation}.
*/
UNAUTHORIZED(401, "Unauthorized"),
/**
* 402 Payment Required, see {@link HTTP/1.1 documentation}.
*/
PAYMENT_REQUIRED(402, "Payment Required"),
/**
* 403 Forbidden, see {@link HTTP/1.1 documentation}.
*/
FORBIDDEN(403, "Forbidden"),
/**
* 404 Not Found, see {@link HTTP/1.1 documentation}.
*/
NOT_FOUND(404, "Not Found"),
/**
* 405 Method Not Allowed, see {@link HTTP/1.1 documentation}.
*/
METHOD_NOT_ALLOWED(405, "Method Not Allowed"),
/**
* 406 Not Acceptable, see {@link HTTP/1.1 documentation}.
*/
NOT_ACCEPTABLE(406, "Not Acceptable"),
/**
* 407 Proxy Authentication Required, see {@link HTTP/1.1 documentation}.
*/
PROXY_AUTHENTICATION_REQUIRED(407, "Proxy Authentication Required"),
/**
* 408 Request Timeout, see {@link HTTP/1.1 documentation}.
*/
REQUEST_TIMEOUT(408, "Request Timeout"),
/**
* 409 Conflict, see {@link HTTP/1.1 documentation}.
*/
CONFLICT(409, "Conflict"),
/**
* 410 Gone, see {@link HTTP/1.1 documentation}.
*/
GONE(410, "Gone"),
/**
* 411 Length Required, see {@link HTTP/1.1 documentation}.
*/
LENGTH_REQUIRED(411, "Length Required"),
/**
* 412 Precondition Failed, see {@link HTTP/1.1 documentation}.
*/
PRECONDITION_FAILED(412, "Precondition Failed"),
/**
* 413 Request Entity Too Large, see {@link HTTP/1.1 documentation}.
*/
REQUEST_ENTITY_TOO_LARGE(413, "Request Entity Too Large"),
/**
* 414 Request-URI Too Long, see {@link HTTP/1.1 documentation}.
*/
REQUEST_URI_TOO_LONG(414, "Request-URI Too Long"),
/**
* 415 Unsupported Media Type, see {@link HTTP/1.1 documentation}.
*/
UNSUPPORTED_MEDIA_TYPE(415, "Unsupported Media Type"),
/**
* 416 Requested Range Not Satisfiable, see {@link HTTP/1.1 documentation}.
*/
REQUESTED_RANGE_NOT_SATIFIABLE(416, "Requested Range Not Satisfiable"),
/**
* 417 Expectation Failed, see {@link HTTP/1.1 documentation}.
*/
EXPECTATION_FAILED(417, "Expectation Failed"),
/**
* 500 Internal Server Error, see {@link HTTP/1.1 documentation}.
*/
INTERNAL_SERVER_ERROR(500, "Internal Server Error"),
/**
* 501 Not Implemented, see {@link HTTP/1.1 documentation}.
*/
NOT_IMPLEMENTED(501, "Not Implemented"),
/**
* 502 Bad Gateway, see {@link HTTP/1.1 documentation}.
*/
BAD_GATEWAY(502, "Bad Gateway"),
/**
* 503 Service Unavailable, see {@link HTTP/1.1 documentation}.
*/
SERVICE_UNAVAILABLE(503, "Service Unavailable"),
/**
* 504 Gateway Timeout, see {@link HTTP/1.1 documentation}.
*/
GATEWAY_TIMEOUT(504, "Gateway Timeout"),
/**
* 505 HTTP Version Not Supported, see {@link HTTP/1.1 documentation}.
*/
HTTP_VERSION_NOT_SUPPORTED(505, "HTTP Version Not Supported");
private final int code;
private final String reason;
private Family family;
Status(final int statusCode, final String reasonPhrase) {
this.code = statusCode;
this.reason = reasonPhrase;
switch(code/100) {
case 1: this.family = Family.INFORMATIONAL; break;
case 2: this.family = Family.SUCCESSFUL; break;
case 3: this.family = Family.REDIRECTION; break;
case 4: this.family = Family.CLIENT_ERROR; break;
case 5: this.family = Family.SERVER_ERROR; break;
default: this.family = Family.OTHER; break;
}
}
/**
* Get the class of status code.
*
* @return the class of status code.
*/
public Family getFamily() {
return family;
}
/**
* Get the associated status code.
*
* @return the status code
*/
public int getStatusCode() {
return code;
}
/**
* Get the reason phrase.
*
* @return the reason phrase.
*/
public String getReasonPhrase() {
return toString();
}
/**
* Get the reason phrase.
*
* @return the reason phrase.
*/
@Override
public String toString() {
return reason;
}
/**
* Convert a numerical status code into the corresponding Status.
*
* @param statusCode the numerical status code.
* @return the matching Status or null is no matching Status is defined.
*/
public static Status fromStatusCode(final int statusCode) {
for (Status s : Status.values()) {
if (s.code == statusCode) {
return s;
}
}
return null;
}
}
private static final Annotation[] EMPTY_ANNOTATIONS = new Annotation[0];
protected static final HeaderDelegate entityTagDelegate =
RuntimeDelegate.getInstance().createHeaderDelegate(EntityTag.class);
protected static final HeaderDelegate dateDelegate =
RuntimeDelegate.getInstance().createHeaderDelegate(Date.class);
private Map properties;
private int status;
private InBoundHeaders headers;
private boolean isEntityBuffered;
private InputStream entity;
private MessageBodyWorkers workers;
public ClientResponse(int status, InBoundHeaders headers, InputStream entity, MessageBodyWorkers workers) {
this.status = status;
this.headers = headers;
this.entity = entity;
this.workers = workers;
}
/**
* Get the client.
*
* @return the client.
*/
public Client getClient() {
return (Client)getProperties().get(Client.class.getName());
}
/**
* Get the map of response properties.
*
* A response property is an application-defined property that may be
* added by the user, a filter, or the handler that is managing the
* connection.
*
* @return the map of response properties.
*/
public Map getProperties() {
if (properties != null) return properties;
return properties = new HashMap();
}
/**
* Get the status code.
*
* @return the status code.
*/
public int getStatus() {
return status;
}
/**
* Set the status code.
*
* @param status the status code.
*/
public void setStatus(int status) {
this.status = status;
}
/**
* Set the status code.
*
* @param status the status code.
*/
public void setStatus(Response.StatusType status) {
setStatus(status.getStatusCode());
}
/**
* Get the status code.
*
* @return the status code, or null if the underlying status code was set
* using the method {@link #setStatus(int)} and there is no
* mapping between the integer value and the Response.Status
* enumeration value.
*/
public Status getClientResponseStatus() {
return Status.fromStatusCode(status);
}
/**
* Get the status code.
*
* @return the status code, or null if the underlying status code was set
* using the method {@link #setStatus(int)} and there is no
* mapping between the integer value and the Response.Status
* enumeration value.
* @deprecated use {@link #getClientResponseStatus() }
*/
@Deprecated
public Response.Status getResponseStatus() {
return Response.Status.fromStatusCode(status);
}
/**
* Set the status code.
*
* @param status the status code.
* @deprecated see {@link #setStatus(javax.ws.rs.core.Response.StatusType) }
*/
@Deprecated
public void setResponseStatus(Response.StatusType status) {
setStatus(status);
}
/**
* Get the HTTP headers of the response.
*
* @return the HTTP headers of the response.
* @deprecated
*/
@Deprecated
public MultivaluedMap getMetadata() {
return getHeaders();
}
/**
* Get the HTTP headers of the response.
*
* @return the HTTP headers of the response.
*/
public MultivaluedMap getHeaders() {
return headers;
}
/**
* Checks if there is an entity available.
*
* @return true if there is an entity present in the response.
*/
public boolean hasEntity() {
try {
if (entity.available() > 0) {
return true;
} else if (entity.markSupported()) {
entity.mark(1);
int i = entity.read();
entity.reset();
return i != -1;
} else {
return false;
}
} catch (IOException ex) {
throw new ClientHandlerException(ex);
}
}
/**
* Get the input stream of the response.
*
* @return the input stream of the response.
*/
public InputStream getEntityInputStream() {
return entity;
}
/**
* Set the input stream of the response.
*
* @param entity the input stream of the response.
*/
public void setEntityInputStream(InputStream entity) {
this.isEntityBuffered = false;
this.entity = entity;
}
/**
* Get the entity of the response.
*
* If the entity is not an instance of Closeable then the entity
* input stream is closed.
*
* @param the type of the response.
* @param c the type of the entity.
* @return an instance of the type c.
*
* @throws ClientHandlerException if there is an error processing the response.
* @throws UniformInterfaceException if the response status is 204 (No Content).
*/
public T getEntity(Class c) throws ClientHandlerException, UniformInterfaceException {
return getEntity(c, c);
}
/**
* Get the entity of the response.
*
* If the entity is not an instance of Closeable then this response
* is closed (you cannot read it more than once, any subsequent
* call will produce {@link ClientHandlerException}).
*
* @param the type of the response.
* @param gt the generic type of the entity.
* @return an instance of the type represented by the generic type.
*
* @throws ClientHandlerException if there is an error processing the response.
* @throws UniformInterfaceException if the response status is 204 (No Content).
*/
public T getEntity(GenericType gt) throws ClientHandlerException, UniformInterfaceException {
return getEntity(gt.getRawClass(), gt.getType());
}
private T getEntity(Class c, Type type) {
if (getStatus() == 204) {
throw new UniformInterfaceException(this);
}
MediaType mediaType = getType();
if (mediaType == null) {
mediaType = MediaType.APPLICATION_OCTET_STREAM_TYPE;
}
final MessageBodyReader br = workers.getMessageBodyReader(
c, type,
EMPTY_ANNOTATIONS, mediaType);
if (br == null) {
close();
String message = "A message body reader for Java class " + c.getName() +
", and Java type " + type +
", and MIME media type " + mediaType + " was not found";
LOGGER.severe(message);
Map> m = workers.getReaders(mediaType);
LOGGER.severe("The registered message body readers compatible with the MIME media type are:\n" +
workers.readersToString(m));
throw new ClientHandlerException(message);
}
try {
T t = br.readFrom(c, type, EMPTY_ANNOTATIONS, mediaType, headers, entity);
if (br instanceof CompletableReader) {
t = ((CompletableReader)br).complete(t);
}
if (!(t instanceof Closeable)) {
close();
}
return t;
} catch (IOException ex) {
close();
throw new ClientHandlerException(ex);
}
}
/**
* Buffer the entity.
*
* All the bytes of the original entity input stream will be read
* and stored in memory. The original entity input stream will
* then be closed.
* @throws ClientHandlerException if there is an error processing the response.
*/
public void bufferEntity() throws ClientHandlerException {
if (isEntityBuffered)
return;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
ReaderWriter.writeTo(entity, baos);
} catch(IOException ex) {
throw new ClientHandlerException(ex);
} finally {
close();
}
entity = new ByteArrayInputStream(baos.toByteArray());
isEntityBuffered = true;
}
/**
* Close the response.
*
* The entity input stream is closed.
*
* @throws ClientHandlerException if there is an error closing the response.
*/
public void close() throws ClientHandlerException {
try {
entity.close();
} catch (IOException e) {
throw new ClientHandlerException(e);
}
}
/**
* Get the media type of the response.
*
* @return the media type.
*/
public MediaType getType() {
String ct = getHeaders().getFirst("Content-Type");
return (ct != null) ? MediaType.valueOf(ct) : null;
}
/**
* Get the location.
*
* @return the location, otherwise null if not present.
*/
public URI getLocation() {
String l = getHeaders().getFirst("Location");
return (l != null) ? URI.create(l) : null;
}
/**
* Get the entity tag.
*
* @return the entity tag, otherwise null if not present.
*/
public EntityTag getEntityTag() {
String t = getHeaders().getFirst("ETag");
return (t != null) ? entityTagDelegate.fromString(t) : null;
}
/**
* Get the last modified date.
*
* @return the last modified date, otherwise null if not present.
*/
public Date getLastModified() {
String d = getHeaders().getFirst("Last-Modified");
return (d != null) ? dateDelegate.fromString(d) : null;
}
/**
* Get response date (server side).
*
* @return the server side response date, otherwise null if not present.
*/
public Date getResponseDate() {
String d = getHeaders().getFirst("Date");
return (d != null) ? dateDelegate.fromString(d) : null;
}
/**
* Get the language.
*
* @return the language, otherwise null if not present.
*/
public String getLanguage() {
return getHeaders().getFirst("Content-Language");
}
/**
* Get Content-Length.
*
* @return Content-Length as integer if present and valid number. In other
* cases returns -1.
*/
public int getLength() {
int size = -1;
String sizeStr = getHeaders().getFirst("Content-Length");
if (sizeStr == null)
return -1;
try {
size = Integer.parseInt(sizeStr);
} catch (NumberFormatException nfe) {
// do nothing
}
return size;
}
/**
* Get the list of cookies.
*
* @return the cookies.
*/
public List getCookies() {
List hs = getHeaders().get("Set-Cookie");
if (hs == null) return Collections.emptyList();
List cs = new ArrayList();
for (String h : hs) {
cs.add(NewCookie.valueOf(h));
}
return cs;
}
/**
* Get the allowed HTTP methods from the Allow HTTP header.
*
* Note that the Allow HTTP header will be returned from an OPTIONS
* request.
*
* @return the allowed HTTP methods, all methods will returned as
* upper case strings.
*/
public Set getAllow() {
String allow = headers.getFirst("Allow");
if (allow == null)
return Collections.emptySet();
Set allowedMethods = new HashSet();
StringTokenizer tokenizer = new StringTokenizer(allow, ",");
while (tokenizer.hasMoreTokens()) {
String m = tokenizer.nextToken().trim();
if (m.length() > 0)
allowedMethods.add(m.toUpperCase());
}
return allowedMethods;
}
public WebResourceLinkHeaders getLinks() {
return new WebResourceLinkHeaders(getClient(), getHeaders());
}
@Override
public String toString() {
return "Client response status: " + status;
}
}