Initial add of appc-directed-graph bundles

[appc.git] / appc-directed-graph / dg-loader / provider / src / main / java / org / openecomp / sdnc / dg / loader / DGXMLGenerator.java

diff --git a/appc-directed-graph/dg-loader/provider/src/main/java/org/openecomp/sdnc/dg/loader/DGXMLGenerator.java b/appc-directed-graph/dg-loader/provider/src/main/java/org/openecomp/sdnc/dg/loader/DGXMLGenerator.java
new file mode 100644 (file)
index 0000000..3ffef14
--- /dev/null
+++ b/appc-directed-graph/dg-loader/provider/src/main/java/org/openecomp/sdnc/dg/loader/DGXMLGenerator.java
@@ -0,0 +1,128 @@
+/*-
+ * ============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();
+               }
+
+       }
+
+}