2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2018 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 * ============LICENSE_END=========================================================
24 package org.onap.sdnc.dg.loader;
27 import java.io.IOException;
28 import java.security.InvalidParameterException;
29 import java.util.ArrayList;
30 import java.util.List;
31 import javax.script.Invocable;
32 import javax.script.ScriptEngine;
33 import javax.script.ScriptEngineManager;
34 import javax.script.ScriptException;
35 import org.apache.commons.io.FileUtils;
36 import org.apache.commons.io.IOUtils;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
41 public class DGXMLGenerator {
43 private static final Logger logger = LoggerFactory.getLogger(DGXMLGenerator.class);
45 private static final String STRING_ENCODING = "utf-8";
46 private static final String JS_INTERFACE_DG_CONVERTOR = "dgconverter";
47 private static final String JS_METHOD_GET_NODE_TO_XML = "getNodeToXml";
48 private static final String GENERATOR_TEMPLATE_FILE = "js/dg_xml2json.js";
50 public void generateXMLFromJSON(String jsonPath, String xmlpath, String propertyPath) {
52 ScriptEngineManager manager = new ScriptEngineManager();
53 ScriptEngine engine = manager.getEngineByName("JavaScript");
54 if (!(engine instanceof Invocable)) {
55 logger.error("Invoking methods is not supported.");
58 Invocable inv = (Invocable) engine;
59 String js = IOUtils.toString(DGXMLGenerator.class.getClassLoader()
60 .getResourceAsStream(GENERATOR_TEMPLATE_FILE), STRING_ENCODING);
63 Object dgconverter = engine.get(JS_INTERFACE_DG_CONVERTOR);
65 List<File> files = new ArrayList<>();
66 if (dgconverter != null) {
67 File jsonPathFile = new File(jsonPath);
68 if (jsonPathFile.isDirectory()) {
69 String[] extensions = new String[]{"json", "JSON"};
70 files = (List<File>) FileUtils.listFiles(jsonPathFile, extensions, true);
71 } else if (jsonPathFile.isFile()) {
72 files.add(jsonPathFile);
74 throw new InvalidParameterException("Failed to get the nature of the JSON path :" + jsonPath);
77 logger.info("JSON Files identified " + files.size());
79 if (!files.isEmpty()) {
80 boolean isXmlPathDeleted = FileUtils.deleteQuietly(new File(xmlpath));
81 logger.info("Cleaning old DG XML under : " + xmlpath + ", delete status :"
84 generateXmls(xmlpath, inv, dgconverter, files);
87 logger.info("No JSON Files to generate XML");
90 logger.error("Couldn't get Java Script Engine..");
92 } catch (Exception e) {
93 logger.error("Failed to generate generateXMLFromJSON", e);
97 private void generateXmls(String xmlpath, Invocable inv, Object dgconverter, List<File> files)
98 throws IOException, ScriptException, NoSuchMethodException {
99 for (File file : files) {
100 String dgJson = FileUtils.readFileToString(file, STRING_ENCODING);
101 logger.info("Generating XML from :" + file.getName());
103 xmlpath + "/" + file.getName().replace(".json", ".xml");
106 inv.invokeMethod(dgconverter, JS_METHOD_GET_NODE_TO_XML, dgJson);
107 tryWriteXml(xmlFileName, dgXMl);
111 private void tryWriteXml(String xmlFileName, Object dgXMl) throws IOException {
113 File xmlFile = new File(xmlFileName);
114 FileUtils.writeStringToFile(xmlFile, dgXMl.toString(), STRING_ENCODING);
115 logger.info("Generated XML File under :" + xmlFile.getCanonicalPath());
119 public static void main(String[] args) {
121 DGXMLGenerator application = new DGXMLGenerator();
124 String propertyPath = null;
125 // Generate, GenerateLoad, GenerateLoadActivate
126 if (args != null && args.length >= 2) {
127 // e.g "src/main/resources/json" "src/test/resources/xml"
128 logger.info("DGXML Conversion Started with arguments :" + args[0] + ":" + args[1]);
132 throw new InvalidParameterException("Required inputs are missing <jsonPath> <xmlPath>");
135 application.generateXMLFromJSON(jsonPath, xmlPath, propertyPath);
136 logger.info("DGXML Conversion Completed...");
137 } catch (Exception e) {
138 logger.error("Failed in DG XML Generation", e);