001/* 002 * (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl-2.1.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * dmetzler 016 */ 017package org.nuxeo.ecm.automation.jaxrs.io.documents; 018 019import java.io.IOException; 020import java.io.InputStream; 021import java.lang.annotation.Annotation; 022import java.lang.reflect.Type; 023 024import javax.servlet.http.HttpServletRequest; 025import javax.ws.rs.Consumes; 026import javax.ws.rs.WebApplicationException; 027import javax.ws.rs.core.Context; 028import javax.ws.rs.core.MediaType; 029import javax.ws.rs.core.MultivaluedMap; 030import javax.ws.rs.core.Response; 031import javax.ws.rs.ext.MessageBodyReader; 032import javax.ws.rs.ext.Provider; 033 034import org.apache.commons.io.IOUtils; 035import org.codehaus.jackson.JsonFactory; 036import org.codehaus.jackson.JsonNode; 037import org.codehaus.jackson.JsonParser; 038import org.nuxeo.ecm.automation.core.operations.business.adapter.BusinessAdapter; 039import org.nuxeo.ecm.automation.io.services.codec.ObjectCodecService; 040import org.nuxeo.ecm.core.api.CoreSession; 041import org.nuxeo.ecm.webengine.jaxrs.session.SessionFactory; 042import org.nuxeo.runtime.api.Framework; 043 044/** 045 * JAX-RS Message body reeader to decode BusinessAdapter 046 * 047 * @since 5.7.2 048 */ 049@Provider 050@Consumes({ "application/json+nxentity", "application/json" }) 051public class BusinessAdapterReader implements MessageBodyReader<BusinessAdapter> { 052 053 @Context 054 protected HttpServletRequest request; 055 056 @Context 057 JsonFactory factory; 058 059 private CoreSession getCoreSession() { 060 return SessionFactory.getSession(request); 061 } 062 063 @Override 064 public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { 065 return BusinessAdapter.class.isAssignableFrom(type); 066 } 067 068 @Override 069 public BusinessAdapter readFrom(Class<BusinessAdapter> arg0, Type arg1, Annotation[] arg2, MediaType arg3, 070 MultivaluedMap<String, String> headers, InputStream in) throws IOException, WebApplicationException { 071 return readRequest(in, headers); 072 } 073 074 public BusinessAdapter readRequest(InputStream in, MultivaluedMap<String, String> headers) throws IOException, 075 WebApplicationException { 076 // As stated in http://tools.ietf.org/html/rfc4627.html UTF-8 is the 077 // default encoding for JSON content 078 // TODO: add introspection on the first bytes to detect other admissible 079 // json encodings, namely: UTF-8, UTF-16 (BE or LE), or UTF-32 (BE or LE) 080 String content = IOUtils.toString(in, "UTF-8"); 081 if (content.isEmpty()) { 082 throw new WebApplicationException(Response.Status.BAD_REQUEST); 083 } 084 return readRequest(content, headers); 085 } 086 087 public BusinessAdapter readRequest(String content, MultivaluedMap<String, String> headers) 088 throws WebApplicationException { 089 try { 090 return readRequest0(content, headers); 091 } catch (WebApplicationException e) { 092 throw e; 093 } catch (IOException e) { 094 throw new WebApplicationException(e); 095 } 096 } 097 098 public BusinessAdapter readRequest0(String content, MultivaluedMap<String, String> headers) throws IOException { 099 ObjectCodecService codecService = Framework.getLocalService(ObjectCodecService.class); 100 101 JsonParser jp = factory.createJsonParser(content); 102 JsonNode inputNode = jp.readValueAsTree(); 103 104 return (BusinessAdapter) codecService.readNode(inputNode, getCoreSession()); 105 106 } 107 108}