2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 * ============LICENSE_END=========================================================
25 package org.onap.sdnc.dg.loader;
28 import java.io.IOException;
29 import java.security.InvalidParameterException;
30 import java.util.ArrayList;
31 import java.util.List;
32 import javax.script.Invocable;
33 import javax.script.ScriptEngine;
34 import javax.script.ScriptEngineManager;
35 import javax.script.ScriptException;
36 import org.apache.commons.io.FileUtils;
37 import org.apache.commons.io.IOUtils;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
42 public class DGXMLGenerator {
44 private static final Logger logger = LoggerFactory.getLogger(DGXMLGenerator.class);
46 private static final String STRING_ENCODING = "utf-8";
47 private static final String JS_INTERFACE_DG_CONVERTOR = "dgconverter";
48 private static final String JS_METHOD_GET_NODE_TO_XML = "getNodeToXml";
49 private static final String GENERATOR_TEMPLATE_FILE = "js/dg_xml2json.js";
51 public void generateXMLFromJSON(String jsonPath, String xmlpath, String propertyPath) {
53 ScriptEngineManager manager = new ScriptEngineManager();
54 ScriptEngine engine = manager.getEngineByName("JavaScript");
55 if (!(engine instanceof Invocable)) {
56 logger.error("Invoking methods is not supported.");
59 Invocable inv = (Invocable) engine;
60 String js = IOUtils.toString(DGXMLGenerator.class.getClassLoader()
61 .getResourceAsStream(GENERATOR_TEMPLATE_FILE), STRING_ENCODING);
64 Object dgconverter = engine.get(JS_INTERFACE_DG_CONVERTOR);
66 List<File> files = new ArrayList<>();
67 if (dgconverter != null) {
68 File jsonPathFile = new File(jsonPath);
69 if (jsonPathFile.isDirectory()) {
70 String[] extensions = new String[]{"json", "JSON"};
71 files = (List<File>) FileUtils.listFiles(jsonPathFile, extensions, true);
72 } else if (jsonPathFile.isFile()) {
73 files.add(jsonPathFile);
75 throw new InvalidParameterException("Failed to get the nature of the JSON path :" + jsonPath);
78 logger.info("JSON Files identified " + files.size());
80 if (!files.isEmpty()) {
81 boolean isXmlPathDeleted = FileUtils.deleteQuietly(new File(xmlpath));
82 logger.info("Cleaning old DG XML under : " + xmlpath + ", delete status :"
85 generateXmls(xmlpath, inv, dgconverter, files);
88 logger.info("No JSON Files to generate XML");
91 logger.error("Couldn't get Java Script Engine..");
93 } catch (Exception e) {
94 logger.error("Failed to generate generateXMLFromJSON", e);
98 private void generateXmls(String xmlpath, Invocable inv, Object dgconverter, List<File> files)
99 throws IOException, ScriptException, NoSuchMethodException {
100 for (File file : files) {
101 String dgJson = FileUtils.readFileToString(file, STRING_ENCODING);
102 logger.info("Generating XML from :" + file.getName());
104 xmlpath + "/" + file.getName().replace(".json", ".xml");
107 inv.invokeMethod(dgconverter, JS_METHOD_GET_NODE_TO_XML, dgJson);
108 tryWriteXml(xmlFileName, dgXMl);
112 private void tryWriteXml(String xmlFileName, Object dgXMl) throws IOException {
114 File xmlFile = new File(xmlFileName);
115 FileUtils.writeStringToFile(xmlFile, dgXMl.toString(), STRING_ENCODING);
116 logger.info("Generated XML File under :" + xmlFile.getCanonicalPath());
120 public static void main(String[] args) {
122 DGXMLGenerator application = new DGXMLGenerator();
125 String propertyPath = null;
126 // Generate, GenerateLoad, GenerateLoadActivate
127 if (args != null && args.length >= 2) {
128 // e.g "src/main/resources/json" "src/test/resources/xml"
129 logger.info("DGXML Conversion Started with arguments :" + args[0] + ":" + args[1]);
133 throw new InvalidParameterException("Required inputs are missing <jsonPath> <xmlPath>");
136 application.generateXMLFromJSON(jsonPath, xmlPath, propertyPath);
137 logger.info("DGXML Conversion Completed...");
138 } catch (Exception e) {
139 logger.error("Failed in DG XML Generation", e);