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/*-
* ============LICENSE_START=======================================================
* ONAP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdnc.dg.loader;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DGXMLGenerator {
private final static Logger logger = LoggerFactory.getLogger(DGXMLGenerator.class);
public static String STRING_ENCODING = "utf-8";
public static String JS_INTERFACE_DG_CONVERTOR = "dgconverter";
public static String JS_METHOD_GET_NODE_TO_XML = "getNodeToXml";
public static String GENERATOR_TEMPLATE_FILE = "js/dg_xml2json.js";
public void generateXMLFromJSON(String jsonPath, String xmlpath, String propertyPath) throws Exception {
try{
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("JavaScript");
if (!(engine instanceof Invocable)) {
logger.error("Invoking methods is not supported.");
return;
}
Invocable inv = (Invocable) engine;
// engine.eval(new FileReader(DGXMLGenerator.class.getClassLoader().getResource(GENERATOR_TEMPLATE_FILE).getPath()));
String js = IOUtils.toString(DGXMLGenerator.class.getClassLoader().getResourceAsStream(GENERATOR_TEMPLATE_FILE),STRING_ENCODING);
engine.eval(js);
Object dgconverter = engine.get(JS_INTERFACE_DG_CONVERTOR);
List<File> files = new ArrayList<File>();
if(dgconverter != null){
File jsonPathFile = new File(jsonPath);
if(jsonPathFile.isDirectory()){
String[] extensions = new String[] { "json", "JSON" };
files = (List<File>) FileUtils.listFiles(jsonPathFile, extensions, true);
}else if(jsonPathFile.isFile()){
files.add(jsonPathFile);
}else{
throw new Exception("Failed to get the nature of the JSON path :"+ jsonPath);
}
logger.info("JSON Files identified "+ files.size());
if(files.size() > 0){
boolean isXmlPathDeleted = FileUtils.deleteQuietly(new File(xmlpath));
logger.info("Cleaning old DG XML under : " + xmlpath + ", delete status :" + isXmlPathDeleted);
for (File file : files) {
String dgJson = FileUtils.readFileToString(file,STRING_ENCODING);
logger.info("Generating XML from :" + file.getName());
String xmlFileName = xmlpath +"/"+file.getName().replace(".json", ".xml");
Object dgXMl = inv.invokeMethod(dgconverter, JS_METHOD_GET_NODE_TO_XML, dgJson);
// Write the XML File
if(dgXMl != null){
File xmlFile = new File(xmlFileName);
FileUtils.writeStringToFile(xmlFile, dgXMl.toString(), STRING_ENCODING);
logger.info("Generated XML File under :" + xmlFile.getCanonicalPath());
}
}
}else{
logger.info("No JSON Files to generate XML");
}
}else{
logger.error("Couldn't get Java Script Engine..");
}
}catch (Exception e) {
logger.error("Failed to generate generateXMLFromJSON :"+e.getMessage());
}
}
public static void main(String[] args) {
try {
DGXMLGenerator application = new DGXMLGenerator();
String jsonPath = null;
String xmlPath = null;
String propertyPath = null;
// Generate, GenerateLoad, GenerateLoadActivate
//args = new String[]{"src/main/resources/json","src/test/resources/xml"};
logger.info("DGXML Conversion Started with arguments :"+ args[0] +":"+ args[1]);
if(args != null && args.length >= 2){
jsonPath = args[0];
xmlPath = args[1];
}else{
throw new Exception("Sufficient inputs are missing <jsonPath> <xmlPath>");
}
application.generateXMLFromJSON(jsonPath, xmlPath, propertyPath);
logger.info("DGXML Conversion Completed...");
} catch (Exception e) {
logger.error("Failed in DG XML Generation :"+e.getMessage());
e.printStackTrace();
}
}
}
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