/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.wink.providers.thrift;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import org.apache.thrift.TBase;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TJSONProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TIOStreamTransport;
/**
* JAX-RS message provider for Apache Thrift
*/
@SuppressWarnings("rawtypes")
@Provider
@Consumes({"application/x-thrift", MediaType.APPLICATION_JSON})
@Produces({"application/x-thrift", MediaType.APPLICATION_JSON})
public class WinkThriftProvider implements MessageBodyReader<TBase>, MessageBodyWriter<TBase> {
public static final String THRIFT = "application/x-thrift";
public static final MediaType THRIFT_TYPE = new MediaType("application", "x-thrift");
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return type != null && TBase.class.isAssignableFrom(type);
}
public TBase readFrom(Class<TBase> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException, WebApplicationException {
try {
return unmarshal(type, mediaType, entityStream);
} catch (Throwable e) {
throw new WebApplicationException(e);
}
}
static <T extends TBase> T unmarshal(Class<T> type, MediaType mediaType, InputStream entityStream) throws Exception {
TIOStreamTransport transport = new TIOStreamTransport(entityStream);
TProtocol protocol = null;
if (THRIFT_TYPE.isCompatible(mediaType)) {
protocol = new TBinaryProtocol.Factory().getProtocol(transport);
} else if (MediaType.APPLICATION_JSON_TYPE.isCompatible(mediaType)) {
protocol = new TJSONProtocol.Factory().getProtocol(transport);
}
T t = type.newInstance();
t.read(protocol);
return t;
}
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return type != null && TBase.class.isAssignableFrom(type);
}
public long getSize(TBase t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return -1;
}
public void writeTo(TBase t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException, WebApplicationException {
marshal(t, mediaType, entityStream);
}
static <T extends TBase> void marshal(T t, MediaType mediaType, OutputStream entityStream) throws IOException {
TIOStreamTransport transport = new TIOStreamTransport(entityStream);
TProtocol protocol = null;
if (THRIFT_TYPE.isCompatible(mediaType)) {
protocol = new TBinaryProtocol.Factory().getProtocol(transport);
} else if (MediaType.APPLICATION_JSON_TYPE.isCompatible(mediaType)) {
protocol = new TJSONProtocol.Factory().getProtocol(transport);
}
if (t != null) {
try {
t.write(protocol);
} catch (TException e) {
throw new IOException(e);
}
}
}
}