appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/FlowControlNode.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APPC
   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  *
  19  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  20  * ============LICENSE_END=========================================================
  21  */
  22 package org.onap.appc.flow.controller.node;
  23
  24 import com.att.eelf.configuration.EELFLogger;
  25 import com.att.eelf.configuration.EELFManager;
  26 import com.fasterxml.jackson.annotation.JsonInclude.Include;
  27 import com.fasterxml.jackson.databind.DeserializationFeature;
  28 import com.fasterxml.jackson.databind.JsonNode;
  29 import com.fasterxml.jackson.databind.ObjectMapper;
  30 import com.fasterxml.jackson.databind.SerializationFeature;
  31 import java.io.FileInputStream;
  32 import java.io.IOException;
  33 import java.io.InputStream;
  34 import java.util.ArrayList;
  35 import java.util.Arrays;
  36 import java.util.HashMap;
  37 import java.util.List;
  38 import java.util.Map;
  39 import java.util.Properties;
  40 import org.apache.commons.lang3.StringUtils;
  41 import org.json.JSONObject;
  42 import org.onap.appc.flow.controller.ResponseHandlerImpl.DefaultResponseHandler;
  43 import org.onap.appc.flow.controller.data.PrecheckOption;
  44 import org.onap.appc.flow.controller.data.ResponseAction;
  45 import org.onap.appc.flow.controller.data.Transaction;
  46 import org.onap.appc.flow.controller.data.Transactions;
  47 import org.onap.appc.flow.controller.dbervices.FlowControlDBService;
  48 import org.onap.appc.flow.controller.executorImpl.GraphExecutor;
  49 import org.onap.appc.flow.controller.executorImpl.NodeExecutor;
  50 import org.onap.appc.flow.controller.executorImpl.RestExecutor;
  51 import org.onap.appc.flow.controller.interfaceData.*;
  52 import org.onap.appc.flow.controller.interfaces.FlowExecutorInterface;
  53 import org.onap.appc.flow.controller.utils.EncryptionTool;
  54 import org.onap.appc.flow.controller.utils.FlowControllerConstants;
  55 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  56 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
  57 import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
  58
  59 public class FlowControlNode implements SvcLogicJavaPlugin{
  60
  61     private static final EELFLogger log = EELFManager.getInstance().getLogger(FlowControlNode.class);
  62     private static final String SDNC_CONFIG_DIR_VAR = "SDNC_CONFIG_DIR";
  63
  64     public void processFlow(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
  65         log.debug("Received processParamKeys call with params : " + inParams);
  66         String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
  67         try {
  68             responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix+".") : "";
  69             FlowControlDBService dbservice = FlowControlDBService.initialise();
  70             SvcLogicContext localContext = new SvcLogicContext();
  71             localContext.setAttribute(FlowControllerConstants.REQUEST_ID, ctx.getAttribute(FlowControllerConstants.REQUEST_ID));
  72             localContext.setAttribute(FlowControllerConstants.VNF_TYPE, ctx.getAttribute(FlowControllerConstants.VNF_TYPE));
  73             localContext.setAttribute(FlowControllerConstants.REQUEST_ACTION, ctx.getAttribute(FlowControllerConstants.REQUEST_ACTION));
  74             localContext.setAttribute(FlowControllerConstants.ACTION_LEVEL, ctx.getAttribute(FlowControllerConstants.ACTION_LEVEL));
  75             localContext.setAttribute(FlowControllerConstants.RESPONSE_PREFIX, responsePrefix);
  76             ctx.setAttribute(FlowControllerConstants.RESPONSE_PREFIX, responsePrefix);
  77             dbservice.getFlowReferenceData(ctx, inParams, localContext);
  78
  79             for (Object key : localContext.getAttributeKeySet()) {
  80                 String parmName = (String) key;
  81                 String parmValue = ctx.getAttribute(parmName);
  82                 log.debug("processFlow " + parmName +  "="  + parmValue);
  83
  84             }
  85             processFlowSequence(inParams, ctx, localContext);
  86             if(!ctx.getAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS).equals(FlowControllerConstants.OUTPUT_STATUS_SUCCESS))
  87                 throw new SvcLogicException(ctx.getAttribute(responsePrefix +  FlowControllerConstants.OUTPUT_STATUS_MESSAGE));
  88
  89         } catch (Exception e) {
  90             ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS, FlowControllerConstants.OUTPUT_STATUS_FAILURE);
  91             ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_ERROR_MESSAGE, e.getMessage());
  92             log.error("Error occured in processFlow ", e);
  93             throw new SvcLogicException(e.getMessage());
  94         }
  95     }
  96
  97     private void processFlowSequence(Map<String, String> inParams, SvcLogicContext ctx, SvcLogicContext localContext) throws Exception
  98     {
  99         String fn = "FlowExecutorNode.processflowSequence";
 100         log.debug(fn + "Received model for flow : " + localContext.toString());
 101         FlowControlDBService dbservice = FlowControlDBService.initialise();
 102         String flowSequnce = null;
 103         for (Object key : localContext.getAttributeKeySet()) {
 104             String parmName = (String) key;
 105             String parmValue = ctx.getAttribute(parmName);
 106             log.debug(parmName +  "="  + parmValue);
 107
 108         }
 109         if(localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE) !=null){
 110
 111             if(localContext.getAttribute(FlowControllerConstants.GENERATION_NODE) != null){
 112                 GraphExecutor transactionExecutor = new GraphExecutor();
 113                 Boolean generatorExists = transactionExecutor.hasGraph("APPC_COMMOM", localContext.getAttribute(FlowControllerConstants.GENERATION_NODE), null, "sync");
 114                 if(generatorExists){
 115                     flowSequnce = transactionExecutor.executeGraph("APPC_COMMOM", localContext.getAttribute(FlowControllerConstants.GENERATION_NODE),
 116                         null, "sync", null).getProperty(FlowControllerConstants.FLOW_SEQUENCE);
 117                 }
 118                 else
 119                     throw new Exception("Can not find Custom defined Flow Generator for " + localContext.getAttribute(FlowControllerConstants.GENERATION_NODE));
 120             }
 121             else if((localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE)).equalsIgnoreCase(FlowControllerConstants.DESINGTIME)){
 122                 localContext.setAttribute(FlowControllerConstants.VNFC_TYPE, ctx.getAttribute(FlowControllerConstants.VNFC_TYPE));
 123                 flowSequnce = dbservice.getDesignTimeFlowModel(localContext);
 124                 if(flowSequnce == null)
 125                     throw new Exception("Flow Sequence is not found User Desinged VNF " + ctx.getAttribute(FlowControllerConstants.VNF_TYPE));
 126             }
 127             else if((localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE)).equalsIgnoreCase(FlowControllerConstants.RUNTIME)){
 128
 129                 Transaction transaction = new Transaction();
 130                 String input = collectInputParams(ctx,transaction);
 131                 log.info("CollectInputParamsData-Input: " + input );
 132
 133                 RestExecutor restExe = new RestExecutor();
 134                 Map<String,String>flowSeq= restExe.execute(transaction, localContext);
 135
 136                 JSONObject sequence = new JSONObject(flowSeq.get("restResponse"));
 137                 if(sequence.has("output"))
 138                     flowSequnce = sequence.getJSONObject("output").toString();
 139                 log.info("MultistepSequenceGenerator-Output: "+flowSequnce);
 140
 141                 if(flowSequnce == null)
 142                     throw new Exception("Failed to get the Flow Sequece runtime for VNF type" + ctx.getAttribute(FlowControllerConstants.VNF_TYPE));
 143
 144             }
 145             else if((localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE)).equalsIgnoreCase(FlowControllerConstants.EXTERNAL)){
 146                 //String input = collectInputParams(localContext);
 147                 //    flowSequnce = ""; //get it from the External interface calling the Rest End point - TBD
 148                 //if(flowSequnce == null)
 149                 throw new Exception("Flow Sequence not found for " + ctx.getAttribute(FlowControllerConstants.VNF_TYPE));
 150             }
 151             else
 152             {
 153                 //No other type of model supported...in Future can get flowModel from other generators which will be included here
 154                 throw new Exception("No information found for sequence Owner Design-Time Vs Run-Time" );
 155             }
 156         }
 157         else{
 158             FlowGenerator flowGenerator = new FlowGenerator();
 159             Transactions trans = flowGenerator.createSingleStepModel(inParams,ctx);
 160             ObjectMapper mapper = new ObjectMapper();
 161             flowSequnce = mapper.writeValueAsString(trans);
 162             log.debug("Single step Flow Sequence : " +  flowSequnce);
 163         }
 164         log.debug("Received Flow Sequence : " +  flowSequnce);
 165
 166         HashMap<Integer, Transaction> transactionMap = createTransactionMap(flowSequnce, localContext);
 167         exeuteAllTransaction(transactionMap, ctx);
 168         log.info("Executed all the transacstion successfully");
 169     }
 170
 171     private void exeuteAllTransaction(HashMap<Integer, Transaction> transactionMap, SvcLogicContext ctx) throws Exception {
 172
 173         String fn = "FlowExecutorNode.exeuteAllTransaction ";
 174         int retry = 0;
 175         FlowExecutorInterface flowExecutor;
 176         for (int key = 1; key <= transactionMap.size() ; key++)
 177         {
 178             log.debug(fn + "Starting transactions ID " + key + " :)=" + retry);
 179             Transaction transaction = transactionMap.get(key);
 180             if(!preProcessor(transactionMap, transaction)){
 181                 log.info("Skipping Transaction ID " +  transaction.getTransactionId());
 182                 continue;
 183             }
 184             if(transaction.getExecutionType() != null){
 185                 switch (transaction.getExecutionType()){
 186                     case FlowControllerConstants.GRAPH :
 187                         flowExecutor = new GraphExecutor();
 188                         break;
 189                     case FlowControllerConstants.NODE :
 190                         flowExecutor =  new NodeExecutor();
 191                         break;
 192                     case FlowControllerConstants.REST :
 193                         flowExecutor = new RestExecutor();
 194                         break;
 195                     default :
 196                         throw new Exception("No Executor found for transaction ID" + transaction.getTransactionId());
 197                 }
 198                 flowExecutor.execute(transaction, ctx);
 199                 ResponseAction responseAction= handleResponse(transaction);
 200
 201                 if(responseAction.getWait() != null && Integer.parseInt(responseAction.getWait()) > 0){
 202                     log.debug(fn + "Going to Sleep .... " + responseAction.getWait());
 203                     Thread.sleep(Integer.parseInt(responseAction.getWait())*1000L);
 204                 }
 205
 206                 if(responseAction.isIntermediateMessage()){
 207                     log.debug(fn + "Sending Intermediate Message back  .... ");
 208                     sendIntermediateMessage();
 209                 }
 210                 if(responseAction.getRetry() != null && Integer.parseInt(responseAction.getRetry()) > retry ){
 211                     log.debug(fn + "Ooppss!!! We will retry again ....... ");
 212                     key--;
 213                     retry++;
 214                     log.debug(fn + "key =" +  key +  "retry =" + retry);
 215
 216                 }
 217                 if(responseAction.isIgnore()){
 218                     log.debug(fn + "Ignoring this Error and moving ahead  ....... ");
 219                     continue;
 220                 }
 221                 if(responseAction.isStop()){
 222                     log.debug(fn + "Need to Stop  ....... ");
 223                     break;
 224                 }
 225                 if(responseAction.getJump() != null && Integer.parseInt(responseAction.getJump()) > 0 ){
 226                     key = Integer.parseInt(responseAction.getJump());
 227                     key --;
 228                 }
 229                 log.debug(fn + "key =" +  key +  "retry =" + retry);
 230
 231             } else {
 232                 throw new Exception("Don't know how to execute transaction ID " + transaction.getTransactionId());
 233             }
 234         }
 235
 236     }
 237     private void sendIntermediateMessage() {
 238         // TODO Auto-generated method stub
 239     }
 240
 241     private ResponseAction handleResponse(Transaction transaction) {
 242         log.info("Handling Response for transaction Id " + transaction.getTransactionId());
 243         DefaultResponseHandler defaultHandler = new DefaultResponseHandler();
 244         return defaultHandler.handlerResponse(transaction);
 245     }
 246
 247     private boolean preProcessor(HashMap<Integer, Transaction> transactionMap, Transaction transaction) throws IOException {
 248         log.debug("Starting Preprocessing Logic ");
 249         boolean runthisStep = false;
 250         try {
 251             if(transaction.getPrecheck() != null && transaction.getPrecheck().getPrecheckOptions() != null
 252                 && !transaction.getPrecheck().getPrecheckOptions().isEmpty()){
 253                 List<PrecheckOption> precheckOptions  = transaction.getPrecheck().getPrecheckOptions();
 254                 for(PrecheckOption precheck : precheckOptions){
 255                     Transaction trans = transactionMap.get(precheck.getpTransactionID());
 256                     ObjectMapper mapper = new ObjectMapper();
 257                     log.info("Mapper= " + mapper.writeValueAsString(trans));
 258                     HashMap trmap = mapper.readValue(mapper.writeValueAsString(trans), HashMap.class);
 259                     if(trmap.get(precheck.getParamName()) != null &&
 260                         ((String) trmap.get(precheck.getParamName())).equalsIgnoreCase(precheck.getParamValue()))
 261                         runthisStep = true;
 262                     else
 263                         runthisStep = false;
 264
 265                     if(("any").equalsIgnoreCase(transaction.getPrecheck().getPrecheckOperator()) && runthisStep)
 266                         break;
 267                 }
 268             } else {
 269                 log.debug("No Pre check defined for transaction ID " + transaction.getTransactionId());
 270                 runthisStep = true;
 271             }
 272         }
 273         catch(Exception e)
 274         {
 275             log.error("Error occured when Preprocessing Logic ", e);
 276             throw e;
 277         }
 278         log.debug("Returing process current Transaction = " + runthisStep);
 279
 280         return runthisStep ;
 281     }
 282
 283     private HashMap<Integer, Transaction> createTransactionMap(String flowSequnce, SvcLogicContext localContext) throws Exception {
 284         ObjectMapper mapper = new ObjectMapper();
 285         Transactions transactions = mapper.readValue(flowSequnce,Transactions.class);
 286         HashMap<Integer, Transaction> transMap = new HashMap<>();
 287         for(Transaction transaction : transactions.getTransactions()){
 288             compileFlowDependencies(transaction, localContext);
 289             //loadTransactionIntoStatus(transactions, ctx); //parse the Transactions Object and create records in process_flow_status table
 290             transMap.put(transaction.getTransactionId(), transaction);
 291         }
 292         return transMap;
 293     }
 294
 295     private void compileFlowDependencies(Transaction transaction, SvcLogicContext localContext) throws Exception {
 296         FlowControlDBService dbservice = FlowControlDBService.initialise();
 297         dbservice.populateModuleAndRPC(transaction, localContext.getAttribute(FlowControllerConstants.VNF_TYPE));
 298         ObjectMapper mapper = new ObjectMapper();
 299         log.debug("Indivisual Transaction Details :" + transaction.toString());
 300         if((localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE) == null) ||
 301             (localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE) != null &&
 302                 ! localContext.getAttribute(FlowControllerConstants.SEQUENCE_TYPE).equalsIgnoreCase(FlowControllerConstants.DESINGTIME))){
 303             localContext.setAttribute("artifact-content", mapper.writeValueAsString(transaction));
 304             dbservice.loadSequenceIntoDB(localContext);
 305         }
 306         //get a field in transction class as transactionhandle interface and register the Handler here for each trnactions
 307     }
 308
 309     private String collectInputParams(SvcLogicContext ctx,Transaction transaction) throws Exception {
 310
 311         String fn = "FlowExecuteNode.collectInputParams";
 312         Properties prop = loadProperties();
 313         log.info("Loaded Properties " + prop.toString());
 314
 315         String vnfId = ctx.getAttribute(FlowControllerConstants.VNF_ID);
 316         String inputData = null;
 317         log.debug(fn + "vnfId :" + vnfId);
 318
 319         if (StringUtils.isBlank(vnfId)) {
 320             throw new Exception("VnfId is missing");
 321         }
 322
 323         try {
 324
 325             ActionIdentifier actionIdentifier = new ActionIdentifier();
 326             log.debug("Enter ActionIdentifier");
 327             if (StringUtils.isNotBlank(vnfId)) {
 328                 actionIdentifier.setVnfId(vnfId);
 329             }
 330             if (StringUtils.isNotBlank(ctx.getAttribute(FlowControllerConstants.VSERVER_ID))) {
 331                 actionIdentifier.setVserverId(ctx.getAttribute(FlowControllerConstants.VSERVER_ID));
 332             }
 333             if (StringUtils.isNotBlank(ctx.getAttribute(FlowControllerConstants.VNFC_NAME))) {
 334                 actionIdentifier.setVnfcName(ctx.getAttribute(FlowControllerConstants.VNFC_NAME));
 335             }
 336             log.info("ActionIdentifierData" + actionIdentifier.toString());
 337
 338             RequestInfo requestInfo = new RequestInfo();
 339             log.info("Enter RequestInfo");
 340             requestInfo.setAction(ctx.getAttribute(FlowControllerConstants.REQUEST_ACTION));
 341             requestInfo.setActionLevel(ctx.getAttribute(FlowControllerConstants.ACTION_LEVEL));
 342             requestInfo.setPayload(ctx.getAttribute(FlowControllerConstants.PAYLOAD));
 343             requestInfo.setActionIdentifier(actionIdentifier);
 344             log.debug("RequestInfo: " + requestInfo.toString());
 345
 346             InventoryInfo inventoryInfo = getInventoryInfo(ctx, vnfId);
 347             DependencyInfo dependencyInfo = getDependencyInfo(ctx);
 348             Capabilities capabilites = getCapabilitesData(ctx);
 349
 350             Input input = new Input();
 351             log.info("Enter InputData");
 352             input.setRequestInfo(requestInfo);
 353             input.setInventoryInfo(inventoryInfo);
 354             input.setDependencyInfo(dependencyInfo);
 355             input.setCapabilities(capabilites);
 356             log.info(fn + "Input parameters:" + input.toString());
 357
 358             ObjectMapper mapper = new ObjectMapper();
 359             mapper.setSerializationInclusion(Include.NON_NULL);
 360             mapper.configure(SerializationFeature.WRAP_ROOT_VALUE, true);
 361             inputData = mapper.writeValueAsString(input);
 362             log.info("InputDataJson:" + inputData);
 363
 364         } catch (Exception e) {
 365             log.error("Error occured in " + fn, e);
 366         }
 367
 368         String resourceUri = prop.getProperty(FlowControllerConstants.SEQ_GENERATOR_URL);
 369         log.info(fn + "resourceUri= " + resourceUri);
 370
 371         EncryptionTool et = EncryptionTool.getInstance();
 372         String pass = et.decrypt(prop.getProperty(FlowControllerConstants.SEQ_GENERATOR_PWD));
 373
 374         transaction.setPayload(inputData);
 375         transaction.setExecutionRPC("POST");
 376         transaction.setuId(prop.getProperty(FlowControllerConstants.SEQ_GENERATOR_UID));
 377         transaction.setPswd(pass);
 378         transaction.setExecutionEndPoint(resourceUri);
 379
 380         return inputData;
 381     }
 382
 383     private DependencyInfo getDependencyInfo(SvcLogicContext ctx) throws Exception {
 384
 385         String fn = "FlowExecutorNode.getDependencyInfo";
 386         DependencyInfo dependencyInfo = new DependencyInfo();
 387         FlowControlDBService dbservice = FlowControlDBService.initialise();
 388         String dependencyData = dbservice.getDependencyInfo(ctx);
 389         log.info(fn + "dependencyDataInput:" + dependencyData);
 390
 391         if (dependencyData != null) {
 392             ObjectMapper mapper = new ObjectMapper();
 393             mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false);
 394             mapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
 395             //JsonNode dependencyInfoData = mapper.readTree(dependencyData).get("dependencyInfo");
 396             JsonNode vnfcData = mapper.readTree(dependencyData).get("vnfcs");
 397             List<Vnfcs> vnfclist = Arrays.asList(mapper.readValue(vnfcData.toString(), Vnfcs[].class));
 398             dependencyInfo.getVnfcs().addAll(vnfclist);
 399
 400             log.info("Dependency Output:"+ dependencyInfo.toString());
 401         }
 402         return dependencyInfo;
 403     }
 404
 405     private Capabilities getCapabilitesData(SvcLogicContext ctx) throws Exception {
 406
 407         String fn = "FlowExecutorNode.getCapabilitesData";
 408         Capabilities capabilities = new Capabilities();
 409         FlowControlDBService dbservice = FlowControlDBService.initialise();
 410         String capabilitiesData = dbservice.getCapabilitiesData(ctx);
 411         log.info(fn + "capabilitiesDataInput:" + capabilitiesData);
 412
 413         if (capabilitiesData != null) {
 414             ObjectMapper mapper = new ObjectMapper();
 415             mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false);
 416             mapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
 417             JsonNode capabilitiesNode = mapper.readValue(capabilitiesData,JsonNode.class);
 418             log.info("capabilitiesNode:" + capabilitiesNode.toString());
 419
 420             JsonNode vnfs = capabilitiesNode.findValue(FlowControllerConstants.VNF);
 421             List<String> vnfsList = new ArrayList<>();
 422             if (vnfs != null) {
 423                 for (int i = 0; i < vnfs.size(); i++) {
 424
 425                     String vnf = vnfs.get(i).asText();
 426                     vnfsList.add(vnf);
 427                 }
 428             }
 429
 430             JsonNode vfModules = capabilitiesNode.findValue(FlowControllerConstants.VF_MODULE);
 431             List<String> vfModulesList = new ArrayList<>();
 432             if (vfModules != null) {
 433                 for (int i = 0; i < vfModules.size(); i++) {
 434
 435                     String vfModule = vfModules.get(i).asText();
 436                     vfModulesList.add(vfModule);
 437                 }
 438             }
 439
 440             JsonNode vnfcs = capabilitiesNode.findValue(FlowControllerConstants.VNFC);
 441             List<String> vnfcsList = new ArrayList<>();
 442             if (vnfcs != null) {
 443                 for (int i = 0; i < vnfcs.size(); i++) {
 444
 445                     String vnfc1 = vnfcs.get(i).asText();
 446                     vnfcsList.add(vnfc1);
 447                 }
 448             }
 449
 450             JsonNode vms = capabilitiesNode.findValue(FlowControllerConstants.VM);
 451
 452             List<String> vmList = new ArrayList<>();
 453             if (vms != null) {
 454                 for (int i = 0; i < vms.size(); i++) {
 455
 456                     String vm1 = vms.get(i).asText();
 457                     vmList.add(vm1);
 458                 }
 459             }
 460
 461             capabilities.getVnfc().addAll(vnfcsList);
 462             capabilities.getVnf().addAll(vnfsList);
 463             capabilities.getVfModule().addAll(vfModulesList);
 464             capabilities.getVm().addAll(vmList);
 465
 466             log.info("Capabilities Output:"+ capabilities.toString());
 467         }
 468         return capabilities;
 469     }
 470
 471     private InventoryInfo getInventoryInfo(SvcLogicContext ctx, String vnfId) throws Exception{
 472         String fn = "FlowExecutorNode.getInventoryInfo";
 473
 474         VnfInfo vnfInfo = new VnfInfo();
 475         vnfInfo.setVnfId(vnfId);
 476         vnfInfo.setVnfName(ctx.getAttribute("tmp.vnfInfo.vnf.vnf-name"));
 477         vnfInfo.setVnfType(ctx.getAttribute("tmp.vnfInfo.vnf.vnf-type"));
 478
 479         String vmcount = ctx.getAttribute("tmp.vnfInfo.vm-count");
 480         if(StringUtils.isNotBlank(vmcount)){
 481             int vmCount = Integer.parseInt(vmcount);
 482             log.info(fn +"vmcount:"+ vmCount);
 483
 484             Vm vm = new Vm();
 485             Vnfcslist vnfc = new Vnfcslist();
 486             for (int i = 0; i < vmCount; i++) {
 487
 488                 vm.setVserverId(ctx.getAttribute("tmp.vnfInfo.vm[" + i + "].vserver-id"));
 489                 String vnfccount = ctx.getAttribute("tmp.vnfInfo.vm[" + i + "].vnfc-count");
 490                 int vnfcCount = Integer.parseInt(vnfccount);
 491
 492                 if (vnfcCount > 0) {
 493                     vnfc.setVnfcName(ctx.getAttribute("tmp.vnfInfo.vm[" + i + "].vnfc-name"));
 494                     vnfc.setVnfcType(ctx.getAttribute("tmp.vnfInfo.vm[" + i + "].vnfc-type"));
 495                     vm.setVnfc(vnfc);
 496                 }
 497                 vnfInfo.getVm().add(vm);
 498             }
 499         }
 500         InventoryInfo inventoryInfo = new InventoryInfo();
 501         inventoryInfo.setVnfInfo(vnfInfo);
 502         log.info(fn + "Inventory Output:" +inventoryInfo.toString());
 503
 504         return inventoryInfo;
 505     }
 506
 507     private static Properties loadProperties() throws Exception {
 508         Properties props = new Properties();
 509         String propDir = System.getenv(SDNC_CONFIG_DIR_VAR);
 510         if (propDir == null)
 511             throw new Exception("Cannot find Property file -" + SDNC_CONFIG_DIR_VAR);
 512         String propFile = propDir + FlowControllerConstants.APPC_FLOW_CONTROLLER;
 513         try (InputStream propStream = new FileInputStream(propFile))
 514         {
 515             props.load(propStream);
 516         }
 517         catch (Exception e)
 518         {
 519             throw new Exception("Could not load properties file " + propFile, e);
 520         }
 521         return props;
 522     }
 523 }