001/* 002 * (C) Copyright 2006-2011 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 * bstefanescu 018 */ 019package org.nuxeo.ecm.restapi.server.jaxrs.routing.io; 020 021import java.io.IOException; 022import java.io.InputStream; 023import java.io.Serializable; 024import java.lang.annotation.Annotation; 025import java.lang.reflect.Type; 026import java.util.ArrayList; 027import java.util.List; 028import java.util.Map; 029 030import javax.servlet.http.HttpServletRequest; 031import javax.ws.rs.WebApplicationException; 032import javax.ws.rs.core.Context; 033import javax.ws.rs.core.MediaType; 034import javax.ws.rs.core.MultivaluedMap; 035import javax.ws.rs.core.Response; 036import javax.ws.rs.core.UriInfo; 037import javax.ws.rs.ext.MessageBodyReader; 038import javax.ws.rs.ext.Provider; 039 040import org.apache.commons.io.IOUtils; 041import org.apache.commons.logging.Log; 042import org.apache.commons.logging.LogFactory; 043import org.codehaus.jackson.JsonFactory; 044import org.codehaus.jackson.JsonNode; 045import org.codehaus.jackson.JsonParseException; 046import org.codehaus.jackson.JsonParser; 047import org.codehaus.jackson.JsonToken; 048import org.codehaus.jackson.node.ArrayNode; 049import org.nuxeo.ecm.core.api.CoreSession; 050import org.nuxeo.ecm.core.api.NuxeoException; 051import org.nuxeo.ecm.restapi.server.jaxrs.routing.io.util.JsonEncodeDecodeUtils; 052import org.nuxeo.ecm.restapi.server.jaxrs.routing.model.WorkflowRequest; 053import org.nuxeo.ecm.webengine.WebException; 054import org.nuxeo.ecm.webengine.jaxrs.session.SessionFactory; 055 056/** 057 * @author <a href="mailto:grenard@nuxeo.com">Guillaume Renard</a> 058 */ 059@Provider 060public class WorkflowRequestReader implements MessageBodyReader<WorkflowRequest> { 061 062 protected static final Log log = LogFactory.getLog(WorkflowRequestReader.class); 063 064 public static final String ENTITY_TYPE = "workflow"; 065 066 @Context 067 private JsonFactory factory; 068 069 @Context 070 HttpServletRequest request; 071 072 @Context 073 UriInfo uriInfo; 074 075 @Override 076 public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) { 077 return WorkflowRequest.class.isAssignableFrom(type); 078 } 079 080 @Override 081 public WorkflowRequest readFrom(Class<WorkflowRequest> type, Type genericType, Annotation[] annotations, 082 MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) 083 throws IOException, WebApplicationException { 084 String content = IOUtils.toString(entityStream); 085 if (content.isEmpty()) { 086 if (content.isEmpty()) { 087 throw new WebException("No content in request body", Response.Status.BAD_REQUEST.getStatusCode()); 088 } 089 090 } 091 092 try { 093 return readRequest(content, httpHeaders); 094 } catch (IOException | NuxeoException | ClassNotFoundException e) { 095 throw WebException.wrap(e); 096 } 097 } 098 099 protected WorkflowRequest readRequest(String content, MultivaluedMap<String, String> httpHeaders) 100 throws JsonParseException, IOException, ClassNotFoundException { 101 CoreSession session = SessionFactory.getSession(request); 102 JsonParser jp = factory.createJsonParser(content); 103 WorkflowRequest workflowRequest = new WorkflowRequest(); 104 105 JsonToken tok = jp.nextToken(); 106 107 // skip { 108 if (jp.getCurrentToken() == JsonToken.START_OBJECT) { 109 tok = jp.nextToken(); 110 } 111 String workflowModelName = null; 112 List<String> attachedDocumentIds = null; 113 JsonNode variableNode = null; 114 Map<String, Serializable> variables = null; 115 while (tok != JsonToken.END_OBJECT) { 116 String key = jp.getCurrentName(); 117 jp.nextToken(); 118 if ("workflowModelName".equals(key)) { 119 workflowModelName = jp.readValueAs(String.class); 120 } else if ("attachedDocumentIds".equals(key)) { 121 ArrayNode docNodes = (ArrayNode) jp.readValueAsTree(); 122 attachedDocumentIds = new ArrayList<String>(); 123 for (int i = 0; i < docNodes.size(); i++) { 124 JsonNode node = docNodes.get(i); 125 attachedDocumentIds.add(node.getTextValue()); 126 } 127 } else if ("variables".equals(key)) { 128 variableNode = jp.readValueAsTree(); 129 } else if ("entity-type".equals(key)) { 130 String entityType = jp.readValueAs(String.class); 131 if (!WorkflowRequestReader.ENTITY_TYPE.equals(entityType)) { 132 throw new WebApplicationException(Response.Status.BAD_REQUEST); 133 } 134 } else { 135 log.debug("Unknown key: " + key); 136 jp.skipChildren(); 137 } 138 tok = jp.nextToken(); 139 140 } 141 142 if (workflowModelName == null) { 143 throw new WebException("No workflowModelName found in request body", 144 Response.Status.BAD_REQUEST.getStatusCode()); 145 } 146 147 if (variableNode != null) { 148 variables = JsonEncodeDecodeUtils.decodeVariables(variableNode, null, session); 149 } 150 workflowRequest.setWorkflowModelName(workflowModelName); 151 workflowRequest.setVariables(variables); 152 workflowRequest.setAttachedDocumentIds(attachedDocumentIds); 153 154 return workflowRequest; 155 } 156 157}