001/* 002 * (C) Copyright 2014 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 * vpasquier 019 */ 020package org.nuxeo.ecm.webengine.app; 021 022import org.codehaus.jackson.JsonEncoding; 023import org.codehaus.jackson.JsonFactory; 024import org.codehaus.jackson.JsonGenerator; 025import org.nuxeo.ecm.webengine.JsonFactoryManager; 026import org.nuxeo.ecm.webengine.WebException; 027import org.nuxeo.runtime.api.Framework; 028 029import javax.ws.rs.core.MediaType; 030import java.io.IOException; 031import java.io.OutputStream; 032 033/** 034 * @since 6.0 035 */ 036public class JsonWebengineWriter { 037 038 static JsonFactoryManager jsonFactoryManager; 039 040 private static JsonFactory getFactory() { 041 jsonFactoryManager = Framework.getLocalService(JsonFactoryManager.class); 042 return jsonFactoryManager.getJsonFactory(); 043 } 044 045 private static JsonGenerator createGenerator(OutputStream out) throws IOException { 046 return getFactory().createJsonGenerator(out, JsonEncoding.UTF8); 047 } 048 049 public static void writeException(OutputStream out, WebException webException, MediaType mediaType) 050 throws IOException { 051 writeException(createGenerator(out), webException, mediaType); 052 } 053 054 public static void writeException(JsonGenerator jg, WebException webException, MediaType mediaType) 055 throws IOException { 056 jg.writeStartObject(); 057 jg.writeStringField("entity-type", "exception"); 058 jg.writeStringField("code", webException.getType()); 059 jg.writeNumberField("status", webException.getStatus()); 060 // jg.writeStringField("help_url", eh.getHelpUrl()); 061 // jg.writeStringField("request_id", eh.getRequestId()); 062 jg.writeStringField("message", webException.getMessage()); 063 if (jsonFactoryManager.isStackDisplay() 064 || MediaType.valueOf(MediaType.APPLICATION_JSON + "+nxentity").equals(mediaType)) { 065 jg.writeStringField("stacktrace", webException.getStackTraceString()); 066 jg.writeObjectField("exception", webException.getCause()); 067 } 068 jg.writeEndObject(); 069 jg.flush(); 070 } 071 072}