gerrit.onap Code Review - appc.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APP-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property.  All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdnc.dg.loader;
  22 import java.io.File;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25
  26 import javax.script.Invocable;
  27 import javax.script.ScriptEngine;
  28 import javax.script.ScriptEngineManager;
  29
  30 import org.apache.commons.io.FileUtils;
  31 import org.apache.commons.io.IOUtils;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35
  36 public class DGXMLGenerator {
  37         private final static Logger logger = LoggerFactory.getLogger(DGXMLGenerator.class);
  38
  39         public static String STRING_ENCODING = "utf-8";
  40         public static String JS_INTERFACE_DG_CONVERTOR = "dgconverter";
  41         public static String JS_METHOD_GET_NODE_TO_XML = "getNodeToXml";
  42         public static String GENERATOR_TEMPLATE_FILE = "js/dg_xml2json.js";
  43
  44         public void generateXMLFromJSON(String jsonPath, String xmlpath, String propertyPath) throws Exception {
  45                 try{
  46                         ScriptEngineManager manager = new ScriptEngineManager();
  47                         ScriptEngine engine = manager.getEngineByName("JavaScript");
  48                         if (!(engine instanceof Invocable)) {
  49                                 logger.error("Invoking methods is not supported.");
  50                                 return;
  51                         }
  52                         Invocable inv = (Invocable) engine;
  53                         //              engine.eval(new FileReader(DGXMLGenerator.class.getClassLoader().getResource(GENERATOR_TEMPLATE_FILE).getPath()));
  54                         String js = IOUtils.toString(DGXMLGenerator.class.getClassLoader().getResourceAsStream(GENERATOR_TEMPLATE_FILE),STRING_ENCODING);
  55                         engine.eval(js);
  56
  57                         Object dgconverter = engine.get(JS_INTERFACE_DG_CONVERTOR);
  58
  59                         List<File> files = new ArrayList<File>();
  60                         if(dgconverter != null){
  61                                 File jsonPathFile = new File(jsonPath);
  62                                 if(jsonPathFile.isDirectory()){
  63                                         String[] extensions = new String[] { "json", "JSON" };
  64                                         files = (List<File>) FileUtils.listFiles(jsonPathFile, extensions, true);
  65                                 }else if(jsonPathFile.isFile()){
  66                                         files.add(jsonPathFile);
  67                                 }else{
  68                                         throw new Exception("Failed to get the nature of the JSON path :"+ jsonPath);
  69                                 }
  70
  71                                 logger.info("JSON Files identified "+ files.size());
  72
  73                                 if(files.size() > 0){
  74                                         boolean isXmlPathDeleted = FileUtils.deleteQuietly(new File(xmlpath));
  75                                         logger.info("Cleaning old DG XML under : " + xmlpath + ", delete status :" + isXmlPathDeleted);
  76
  77                                         for (File file : files) {
  78                                                 String dgJson = FileUtils.readFileToString(file,STRING_ENCODING);
  79                                                 logger.info("Generating XML from  :" + file.getName());
  80                                                 String xmlFileName = xmlpath +"/"+file.getName().replace(".json", ".xml");
  81
  82                                                 Object dgXMl = inv.invokeMethod(dgconverter, JS_METHOD_GET_NODE_TO_XML, dgJson);
  83                                                 // Write the XML File
  84                                                 if(dgXMl != null){
  85                                                         File xmlFile = new File(xmlFileName);
  86                                                         FileUtils.writeStringToFile(xmlFile, dgXMl.toString(), STRING_ENCODING);
  87                                                         logger.info("Generated XML File under  :" + xmlFile.getCanonicalPath());
  88                                                 }
  89                                         }
  90
  91                                 }else{
  92                                         logger.info("No JSON Files to generate XML");
  93                                 }
  94                         }else{
  95                                 logger.error("Couldn't get Java Script Engine..");
  96                         }
  97                 }catch (Exception e) {
  98                         logger.error("Failed to generate generateXMLFromJSON :"+e.getMessage());
  99                 }
 100         }
 101
 102
 103         public static void main(String[] args) {
 104                 try {
 105                         DGXMLGenerator application = new DGXMLGenerator();
 106                         String jsonPath = null;
 107                         String xmlPath = null;
 108                         String propertyPath = null;
 109                         // Generate, GenerateLoad, GenerateLoadActivate
 110                         //args = new String[]{"src/main/resources/json","src/test/resources/xml"};
 111                         logger.info("DGXML Conversion Started with arguments :"+ args[0] +":"+ args[1]);
 112                         if(args != null && args.length >= 2){
 113                                 jsonPath = args[0];
 114                                 xmlPath = args[1];
 115                         }else{
 116                                 throw new Exception("Sufficient inputs are missing <jsonPath> <xmlPath>");
 117                         }
 118
 119                         application.generateXMLFromJSON(jsonPath, xmlPath, propertyPath);
 120                         logger.info("DGXML Conversion Completed...");
 121                 } catch (Exception e) {
 122                         logger.error("Failed in DG XML Generation :"+e.getMessage());
 123                         e.printStackTrace();
 124                 }
 125
 126         }
 127
 128 }