001/* 002 * (C) Copyright 2014 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 * bstefanescu 016 * vpasquier 017 */ 018package org.nuxeo.ecm.webengine.app; 019 020import org.codehaus.jackson.JsonEncoding; 021import org.codehaus.jackson.JsonFactory; 022import org.codehaus.jackson.JsonGenerator; 023import org.nuxeo.ecm.webengine.JsonFactoryManager; 024import org.nuxeo.ecm.webengine.WebException; 025import org.nuxeo.runtime.api.Framework; 026 027import javax.ws.rs.core.MediaType; 028import java.io.IOException; 029import java.io.OutputStream; 030 031/** 032 * @since 6.0 033 */ 034public class JsonWebengineWriter { 035 036 static JsonFactoryManager jsonFactoryManager; 037 038 private static JsonFactory getFactory() { 039 jsonFactoryManager = Framework.getLocalService(JsonFactoryManager.class); 040 return jsonFactoryManager.getJsonFactory(); 041 } 042 043 private static JsonGenerator createGenerator(OutputStream out) throws IOException { 044 return getFactory().createJsonGenerator(out, JsonEncoding.UTF8); 045 } 046 047 public static void writeException(OutputStream out, WebException webException, MediaType mediaType) 048 throws IOException { 049 writeException(createGenerator(out), webException, mediaType); 050 } 051 052 public static void writeException(JsonGenerator jg, WebException webException, MediaType mediaType) 053 throws IOException { 054 jg.writeStartObject(); 055 jg.writeStringField("entity-type", "exception"); 056 jg.writeStringField("code", webException.getType()); 057 jg.writeNumberField("status", webException.getStatus()); 058 // jg.writeStringField("help_url", eh.getHelpUrl()); 059 // jg.writeStringField("request_id", eh.getRequestId()); 060 jg.writeStringField("message", webException.getMessage()); 061 if (jsonFactoryManager.isStackDisplay() 062 || MediaType.valueOf(MediaType.APPLICATION_JSON + "+nxentity").equals(mediaType)) { 063 jg.writeStringField("stacktrace", webException.getStackTraceString()); 064 jg.writeObjectField("exception", webException.getCause()); 065 } 066 jg.writeEndObject(); 067 jg.flush(); 068 } 069 070}