| /* |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.hadoop.hbase.rest.provider.consumer; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| |
| import javax.ws.rs.Consumes; |
| 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.Provider; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.rest.Constants; |
| import org.apache.hadoop.hbase.rest.ProtobufMessageHandler; |
| |
| /** |
| * Adapter for hooking up Jersey content processing dispatch to |
| * ProtobufMessageHandler interface capable handlers for decoding protobuf input. |
| */ |
| @Provider |
| @Consumes(Constants.MIMETYPE_PROTOBUF) |
| public class ProtobufMessageBodyConsumer |
| implements MessageBodyReader<ProtobufMessageHandler> { |
| private static final Log LOG = |
| LogFactory.getLog(ProtobufMessageBodyConsumer.class); |
| |
| @Override |
| public boolean isReadable(Class<?> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType) { |
| return ProtobufMessageHandler.class.isAssignableFrom(type); |
| } |
| |
| @Override |
| public ProtobufMessageHandler readFrom(Class<ProtobufMessageHandler> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType, |
| MultivaluedMap<String, String> httpHeaders, InputStream inputStream) |
| throws IOException, WebApplicationException { |
| ProtobufMessageHandler obj = null; |
| try { |
| obj = type.newInstance(); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| byte[] buffer = new byte[4096]; |
| int read; |
| do { |
| read = inputStream.read(buffer, 0, buffer.length); |
| if (read > 0) { |
| baos.write(buffer, 0, read); |
| } |
| } while (read > 0); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(getClass() + ": read " + baos.size() + " bytes from " + |
| inputStream); |
| } |
| obj = obj.getObjectFromMessage(baos.toByteArray()); |
| } catch (InstantiationException e) { |
| throw new WebApplicationException(e); |
| } catch (IllegalAccessException e) { |
| throw new WebApplicationException(e); |
| } |
| return obj; |
| } |
| } |