001/* 002 * (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * dmetzler 018 */ 019package org.nuxeo.ecm.automation.jaxrs.io.documents; 020 021import static org.apache.http.HttpStatus.SC_BAD_REQUEST; 022 023import java.io.IOException; 024import java.io.InputStream; 025import java.lang.annotation.Annotation; 026import java.lang.reflect.Type; 027 028import javax.servlet.http.HttpServletRequest; 029import javax.ws.rs.Consumes; 030import javax.ws.rs.WebApplicationException; 031import javax.ws.rs.core.Context; 032import javax.ws.rs.core.MediaType; 033import javax.ws.rs.core.MultivaluedMap; 034import javax.ws.rs.core.Response; 035import javax.ws.rs.ext.MessageBodyReader; 036import javax.ws.rs.ext.Provider; 037 038import org.apache.commons.io.IOUtils; 039import org.nuxeo.ecm.automation.core.operations.business.adapter.BusinessAdapter; 040import org.nuxeo.ecm.automation.io.services.codec.ObjectCodecService; 041import org.nuxeo.ecm.core.api.CoreSession; 042import org.nuxeo.ecm.webengine.jaxrs.session.SessionFactory; 043import org.nuxeo.runtime.api.Framework; 044 045import com.fasterxml.jackson.core.JsonFactory; 046import com.fasterxml.jackson.core.JsonParser; 047import com.fasterxml.jackson.core.JsonProcessingException; 048import com.fasterxml.jackson.databind.JsonNode; 049 050/** 051 * JAX-RS Message body reeader to decode BusinessAdapter 052 * 053 * @since 5.7.2 054 */ 055@Provider 056@Consumes(MediaType.APPLICATION_JSON) 057public class BusinessAdapterReader implements MessageBodyReader<BusinessAdapter> { 058 059 @Context 060 protected HttpServletRequest request; 061 062 @Context 063 JsonFactory factory; 064 065 private CoreSession getCoreSession() { 066 return SessionFactory.getSession(request); 067 } 068 069 @Override 070 public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { 071 return BusinessAdapter.class.isAssignableFrom(type); 072 } 073 074 @Override 075 public BusinessAdapter readFrom(Class<BusinessAdapter> arg0, Type arg1, Annotation[] arg2, MediaType arg3, 076 MultivaluedMap<String, String> headers, InputStream in) throws IOException, WebApplicationException { 077 return readRequest(in, headers); 078 } 079 080 public BusinessAdapter readRequest(InputStream in, MultivaluedMap<String, String> headers) throws IOException, 081 WebApplicationException { 082 // As stated in http://tools.ietf.org/html/rfc4627.html UTF-8 is the 083 // default encoding for JSON content 084 // TODO: add introspection on the first bytes to detect other admissible 085 // json encodings, namely: UTF-8, UTF-16 (BE or LE), or UTF-32 (BE or LE) 086 String content = IOUtils.toString(in, "UTF-8"); 087 if (content.isEmpty()) { 088 throw new WebApplicationException(Response.Status.BAD_REQUEST); 089 } 090 return readRequest(content, headers); 091 } 092 093 public BusinessAdapter readRequest(String content, MultivaluedMap<String, String> headers) 094 throws WebApplicationException { 095 try { 096 return readRequest0(content, headers); 097 } catch (WebApplicationException e) { 098 throw e; 099 } catch (IOException e) { 100 throw new WebApplicationException(e); 101 } 102 } 103 104 public BusinessAdapter readRequest0(String content, MultivaluedMap<String, String> headers) throws IOException { 105 ObjectCodecService codecService = Framework.getService(ObjectCodecService.class); 106 try (JsonParser jp = factory.createParser(content)) { 107 JsonNode inputNode = jp.readValueAsTree(); 108 return (BusinessAdapter) codecService.readNode(inputNode, getCoreSession()); 109 } catch (JsonProcessingException e) { 110 throw new WebApplicationException(e, SC_BAD_REQUEST); 111 } 112 113 } 114 115}