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package org.glassfish.jersey.client.oauth1;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.URI;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import org.glassfish.jersey.message.MessageBodyWorkers;
import org.glassfish.jersey.uri.UriComponent;
/**
* Utility class for processing client requests. This class somehow wants to be
* more than just a utility class for this one filter.
*
* @author Paul C. Bryan <pbryan@sun.com>
* @since 2.3
*/
class RequestUtil {
private static final Annotation[] EMPTY_ANNOTATIONS = new Annotation[0];
/**
* Returns the query parameters of a request as a multi-valued map.
*
* @param request the client request to retrieve query parameters from.
* @return a {@link javax.ws.rs.core.MultivaluedMap} containing the entity query parameters.
*/
public static MultivaluedMap<String, String> getQueryParameters(ClientRequestContext request) {
URI uri = request.getUri();
if (uri == null) {
return null;
}
return UriComponent.decodeQuery(uri, true);
}
/**
* Returns the form parameters from a request entity as a multi-valued map.
* If the request does not have a POST method, or the media type is not
* x-www-form-urlencoded, then null is returned.
*
* @param request the client request containing the entity to extract parameters from.
* @return a {@link javax.ws.rs.core.MultivaluedMap} containing the entity form parameters.
*/
public static MultivaluedMap<String, String> getEntityParameters(ClientRequestContext request,
MessageBodyWorkers messageBodyWorkers) {
Object entity = request.getEntity();
String method = request.getMethod();
MediaType mediaType = request.getMediaType();
// no entity, not a post or not x-www-form-urlencoded: return empty map
if (entity == null || method == null || !method.equalsIgnoreCase("POST") ||
mediaType == null || !mediaType.equals(MediaType.APPLICATION_FORM_URLENCODED_TYPE)) {
return new MultivaluedHashMap<String, String>();
}
// it's ready to go if already expressed as a multi-valued map
if (entity instanceof MultivaluedMap) {
return (MultivaluedMap) entity;
}
Type entityType = entity.getClass();
// if the entity is generic, get specific type and class
if (entity instanceof GenericEntity) {
final GenericEntity generic = (GenericEntity) entity;
entityType = generic.getType(); // overwrite
entity = generic.getEntity();
}
final Class entityClass = entity.getClass();
ByteArrayOutputStream out = new ByteArrayOutputStream();
MessageBodyWriter writer = messageBodyWorkers.getMessageBodyWriter(entityClass,
entityType, EMPTY_ANNOTATIONS, MediaType.APPLICATION_FORM_URLENCODED_TYPE);
try {
writer.writeTo(entity, entityClass, entityType,
EMPTY_ANNOTATIONS, MediaType.APPLICATION_FORM_URLENCODED_TYPE, null, out);
} catch (WebApplicationException wae) {
throw new IllegalStateException(wae);
} catch (IOException ioe) {
throw new IllegalStateException(ioe);
}
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
MessageBodyReader reader = messageBodyWorkers.getMessageBodyReader(MultivaluedMap.class,
MultivaluedMap.class, EMPTY_ANNOTATIONS, MediaType.APPLICATION_FORM_URLENCODED_TYPE);
try {
return (MultivaluedMap<String, String>) reader.readFrom(MultivaluedMap.class,
MultivaluedMap.class, EMPTY_ANNOTATIONS, MediaType.APPLICATION_FORM_URLENCODED_TYPE, null, in);
} catch (IOException ioe) {
throw new IllegalStateException(ioe);
}
}
}