gerrit.onap Code Review - policy/drools-applications.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * controlloop event manager
   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  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.controlloop.eventmanager;
  22
  23 import java.io.Serializable;
  24 import java.io.UnsupportedEncodingException;
  25 import java.net.URLDecoder;
  26 import java.util.ArrayList;
  27 import java.util.Collection;
  28 import java.util.LinkedList;
  29 import java.util.UUID;
  30
  31 import org.onap.policy.aai.AAIGETVnfResponse;
  32 import org.onap.policy.aai.AAIGETVserverResponse;
  33 import org.onap.policy.aai.AAIManager;
  34 import org.onap.policy.aai.util.AAIException;
  35 import org.onap.policy.controlloop.ControlLoopEventStatus;
  36 import org.onap.policy.controlloop.ControlLoopException;
  37 import org.onap.policy.controlloop.ControlLoopNotificationType;
  38 import org.onap.policy.controlloop.ControlLoopOperation;
  39 import org.onap.policy.controlloop.VirtualControlLoopEvent;
  40 import org.onap.policy.controlloop.VirtualControlLoopNotification;
  41 import org.onap.policy.controlloop.policy.FinalResult;
  42 import org.onap.policy.controlloop.policy.Policy;
  43 import org.onap.policy.controlloop.processor.ControlLoopProcessor;
  44 import org.onap.policy.guard.GuardResult;
  45 import org.onap.policy.guard.LockCallback;
  46 import org.onap.policy.guard.PolicyGuard;
  47 import org.onap.policy.guard.PolicyGuard.LockResult;
  48 import org.onap.policy.guard.TargetLock;
  49 import org.onap.policy.rest.RESTManager;
  50 import org.onap.policy.drools.system.PolicyEngine;
  51 import org.slf4j.Logger;
  52 import org.slf4j.LoggerFactory;
  53
  54 public class ControlLoopEventManager implements LockCallback, Serializable {
  55
  56         /**
  57          *
  58          */
  59         private static final Logger logger = LoggerFactory.getLogger(ControlLoopEventManager.class);
  60
  61         private static final long serialVersionUID = -1216568161322872641L;
  62         public final String closedLoopControlName;
  63         public final UUID requestID;
  64
  65         private String controlLoopResult;
  66         private transient ControlLoopProcessor processor = null;
  67         private VirtualControlLoopEvent onset;
  68         private Integer numOnsets = 0;
  69         private Integer numAbatements = 0;
  70         private VirtualControlLoopEvent abatement;
  71         private FinalResult controlLoopTimedOut = null;
  72
  73         private boolean isActivated = false;
  74         private LinkedList<ControlLoopOperation> controlLoopHistory = new LinkedList<>();
  75         private ControlLoopOperationManager currentOperation = null;
  76         private transient TargetLock targetLock = null;
  77         private AAIGETVnfResponse vnfResponse = null;
  78         private AAIGETVserverResponse vserverResponse = null;
  79         private static String aaiHostURL;
  80         private static String aaiUser;
  81         private static String aaiPassword;
  82
  83         private static Collection<String> requiredAAIKeys = new ArrayList<>();
  84         static {
  85                 requiredAAIKeys.add("AICVServerSelfLink");
  86                 requiredAAIKeys.add("AICIdentity");
  87                 requiredAAIKeys.add("is_closed_loop_disabled");
  88                 requiredAAIKeys.add("VM_NAME");
  89         }
  90
  91         public ControlLoopEventManager(String closedLoopControlName, UUID requestID) {
  92                 this.closedLoopControlName = closedLoopControlName;
  93                 this.requestID = requestID;
  94         }
  95
  96         public String getControlLoopResult() {
  97                 return controlLoopResult;
  98         }
  99
 100         public void setControlLoopResult(String controlLoopResult) {
 101                 this.controlLoopResult = controlLoopResult;
 102         }
 103
 104         public Integer getNumOnsets() {
 105                 return numOnsets;
 106         }
 107
 108         public void setNumOnsets(Integer numOnsets) {
 109                 this.numOnsets = numOnsets;
 110         }
 111
 112         public Integer getNumAbatements() {
 113                 return numAbatements;
 114         }
 115
 116         public void setNumAbatements(Integer numAbatements) {
 117                 this.numAbatements = numAbatements;
 118         }
 119
 120         public boolean isActivated() {
 121                 return isActivated;
 122         }
 123
 124         public void setActivated(boolean isActivated) {
 125                 this.isActivated = isActivated;
 126         }
 127
 128         public VirtualControlLoopEvent  getOnsetEvent() {
 129                 return this.onset;
 130         }
 131
 132         public VirtualControlLoopEvent getAbatementEvent() {
 133                 return this.abatement;
 134         }
 135
 136         public ControlLoopProcessor getProcessor() {
 137                 return this.processor;
 138         }
 139
 140         public VirtualControlLoopNotification   activate(VirtualControlLoopEvent event) {
 141                 VirtualControlLoopNotification notification = new VirtualControlLoopNotification(event);
 142                 try {
 143                         //
 144                         // This method should ONLY be called ONCE
 145                         //
 146                         if (this.isActivated) {
 147                                 throw new ControlLoopException("ControlLoopEventManager has already been activated.");
 148                         }
 149                         //
 150                         // Syntax check the event
 151                         //
 152                         checkEventSyntax(event);
 153
 154                         //
 155                         // At this point we are good to go with this event
 156                         //
 157                         this.onset = event;
 158                         this.numOnsets = 1;
 159                         //
 160                         notification.setNotification(ControlLoopNotificationType.ACTIVE);
 161                         //
 162                         // Set ourselves as active
 163                         //
 164                         this.isActivated = true;
 165                 } catch (ControlLoopException e) {
 166                         logger.error("{}: activate threw: ",this, e);
 167                         notification.setNotification(ControlLoopNotificationType.REJECTED);
 168                         notification.setMessage(e.getMessage());
 169                 }
 170                 return notification;
 171         }
 172
 173
 174
 175         public VirtualControlLoopNotification   activate(String yamlSpecification, VirtualControlLoopEvent event) {
 176                 VirtualControlLoopNotification notification = new VirtualControlLoopNotification(event);
 177                 try {
 178                         //
 179                         // This method should ONLY be called ONCE
 180                         //
 181                         if (this.isActivated) {
 182                                 throw new ControlLoopException("ControlLoopEventManager has already been activated.");
 183                         }
 184                         //
 185                         // Syntax check the event
 186                         //
 187                         checkEventSyntax(event);
 188
 189                         //
 190                         // Check the YAML
 191                         //
 192                         if (yamlSpecification == null || yamlSpecification.length() < 1) {
 193                                 throw new ControlLoopException("yaml specification is null or 0 length");
 194                         }
 195                         String decodedYaml = null;
 196                         try {
 197                                 decodedYaml = URLDecoder.decode(yamlSpecification, "UTF-8");
 198                                 if (decodedYaml != null && decodedYaml.length() > 0) {
 199                                         yamlSpecification = decodedYaml;
 200                                 }
 201                         } catch (UnsupportedEncodingException e) {
 202                                 logger.error("{}: activate threw: ",this, e);
 203                         }
 204                         //
 205                         // Parse the YAML specification
 206                         //
 207                         this.processor = new ControlLoopProcessor(yamlSpecification);
 208
 209                         //
 210                         // At this point we are good to go with this event
 211                         //
 212                         this.onset = event;
 213                         this.numOnsets = 1;
 214                         //
 215                         //
 216                         //
 217                         notification.setNotification(ControlLoopNotificationType.ACTIVE);
 218                         //
 219                         // Set ourselves as active
 220                         //
 221                         this.isActivated = true;
 222                 } catch (ControlLoopException e) {
 223                         logger.error("{}: activate threw: ",this, e);
 224                         notification.setNotification(ControlLoopNotificationType.REJECTED);
 225                         notification.setMessage(e.getMessage());
 226                 }
 227                 return notification;
 228         }
 229
 230         public VirtualControlLoopNotification   isControlLoopFinal() throws ControlLoopException {
 231                 //
 232                 // Check if they activated us
 233                 //
 234                 if (this.isActivated == false) {
 235                         throw new ControlLoopException("ControlLoopEventManager MUST be activated first.");
 236                 }
 237                 //
 238                 // Make sure we are expecting this call.
 239                 //
 240                 if (this.onset == null) {
 241                         throw new ControlLoopException("No onset event for ControlLoopEventManager.");
 242                 }
 243                 //
 244                 // Ok, start creating the notification
 245                 //
 246                 VirtualControlLoopNotification notification = new VirtualControlLoopNotification(this.onset);
 247                 //
 248                 // Check if the overall control loop has timed out
 249                 //
 250                 if (this.isControlLoopTimedOut()) {
 251                         //
 252                         // Yes we have timed out
 253                         //
 254                         notification.setNotification(ControlLoopNotificationType.FINAL_FAILURE);
 255                         notification.setMessage("Control Loop timed out");
 256                         notification.getHistory().addAll(this.controlLoopHistory);
 257                         return notification;
 258                 }
 259                 //
 260                 // Check if the current policy is Final
 261                 //
 262                 FinalResult result = this.processor.checkIsCurrentPolicyFinal();
 263                 if (result == null) {
 264                         //
 265                         // we are not at a final result
 266                         //
 267                         return null;
 268                 }
 269
 270                 switch (result) {
 271                 case FINAL_FAILURE_EXCEPTION:
 272                         notification.setMessage("Exception in processing closed loop");
 273                 case FINAL_FAILURE:
 274                 case FINAL_FAILURE_RETRIES:
 275                 case FINAL_FAILURE_TIMEOUT:
 276                 case FINAL_FAILURE_GUARD:
 277                         notification.setNotification(ControlLoopNotificationType.FINAL_FAILURE);
 278                         break;
 279                 case FINAL_OPENLOOP:
 280                         notification.setNotification(ControlLoopNotificationType.FINAL_OPENLOOP);
 281                         break;
 282                 case FINAL_SUCCESS:
 283                         notification.setNotification(ControlLoopNotificationType.FINAL_SUCCESS);
 284                         break;
 285                 default:
 286                         return null;
 287                 }
 288                 //
 289                 // Be sure to add all the history
 290                 //
 291                 notification.getHistory().addAll(this.controlLoopHistory);
 292                 return notification;
 293         }
 294
 295         public ControlLoopOperationManager      processControlLoop() throws ControlLoopException, AAIException {
 296                 //
 297                 // Check if they activated us
 298                 //
 299                 if (this.isActivated == false) {
 300                         throw new ControlLoopException("ControlLoopEventManager MUST be activated first.");
 301                 }
 302                 //
 303                 // Make sure we are expecting this call.
 304                 //
 305                 if (this.onset == null) {
 306                         throw new ControlLoopException("No onset event for ControlLoopEventManager.");
 307                 }
 308                 //
 309                 // Is there a current operation?
 310                 //
 311                 if (this.currentOperation != null) {
 312                         //
 313                         // Throw an exception, or simply return the current operation?
 314                         //
 315                         throw new ControlLoopException("Already working an Operation, do not call this method.");
 316                 }
 317                 //
 318                 // Ensure we are not FINAL
 319                 //
 320                 VirtualControlLoopNotification notification = this.isControlLoopFinal();
 321                 if (notification != null) {
 322                         //
 323                         // This is weird, we require them to call the isControlLoopFinal() method first
 324                         //
 325                         // We should really abstract this and avoid throwing an exception, because it really
 326                         // isn't an exception.
 327                         //
 328                         throw new ControlLoopException("Control Loop is in FINAL state, do not call this method.");
 329                 }
 330                 //
 331                 // Not final so get the policy that needs to be worked on.
 332                 //
 333                 Policy policy = this.processor.getCurrentPolicy();
 334                 if (policy == null) {
 335                         throw new ControlLoopException("ControlLoopEventManager: processor came upon null Policy.");
 336                 }
 337                 //
 338                 // And setup an operation
 339                 //
 340                 this.currentOperation = new ControlLoopOperationManager(this.onset, policy, this);
 341                 //
 342                 // Return it
 343                 //
 344                 return this.currentOperation;
 345         }
 346
 347         public void finishOperation(ControlLoopOperationManager operation) throws ControlLoopException {
 348                 //
 349                 // Verify we have a current operation
 350                 //
 351                 if (this.currentOperation != null) {
 352                         //
 353                         // Validate they are finishing the current operation
 354                         // PLD - this is simply comparing the policy. Do we want to equals the whole object?
 355                         //
 356                         if (this.currentOperation.policy.equals(operation.policy)) {
 357                                 logger.debug("Finishing {} result is {}", this.currentOperation.policy.getRecipe(), this.currentOperation.getOperationResult());
 358                                 //
 359                                 // Save history
 360                                 //
 361                                 this.controlLoopHistory.addAll(this.currentOperation.getHistory());
 362                                 //
 363                                 // Move to the next Policy
 364                                 //
 365                                 this.processor.nextPolicyForResult(this.currentOperation.getOperationResult());
 366                                 //
 367                                 // Just null this out
 368                                 //
 369                                 this.currentOperation = null;
 370                                 //
 371                                 // TODO: Release our lock
 372                                 //
 373                                 return;
 374                         }
 375                         logger.debug("Cannot finish current operation {} does not match given operation {}", this.currentOperation.policy, operation.policy);
 376                         return;
 377                 }
 378                 throw new ControlLoopException("No operation to finish.");
 379         }
 380
 381         public synchronized LockResult<GuardResult, TargetLock> lockCurrentOperation() throws ControlLoopException {
 382                 //
 383                 // Sanity check
 384                 //
 385                 if (this.currentOperation == null) {
 386                         throw new ControlLoopException("Do not have a current operation.");
 387                 }
 388                 //
 389                 // Have we acquired it already?
 390                 //
 391                 if (this.targetLock != null) {
 392                         //
 393                         // TODO: Make sure the current lock is for the same target.
 394                         // Currently, it should be. But in the future it may not.
 395                         //
 396                         return new LockResult<GuardResult, TargetLock>(GuardResult.LOCK_ACQUIRED, this.targetLock);
 397                 } else {
 398                         //
 399                         // Ask the Guard
 400                         //
 401                         LockResult<GuardResult, TargetLock> lockResult = PolicyGuard.lockTarget(
 402                                                                                                                                                 this.currentOperation.policy.getTarget().getType(),
 403                                                                                                                                                 this.currentOperation.getTargetEntity(),
 404                                                                                                                                                 this.onset.getRequestID(),
 405                                                                                                                                                 this);
 406                         //
 407                         // Was it acquired?
 408                         //
 409                         if (lockResult.getA().equals(GuardResult.LOCK_ACQUIRED)) {
 410                                 //
 411                                 // Yes, let's save it
 412                                 //
 413                                 this.targetLock = lockResult.getB();
 414                         }
 415                         return lockResult;
 416                 }
 417         }
 418
 419         public synchronized TargetLock unlockCurrentOperation() {
 420                 if (this.targetLock == null) {
 421                         return null;
 422                 }
 423                 if (PolicyGuard.unlockTarget(this.targetLock) == true) {
 424                         TargetLock returnLock = this.targetLock;
 425                         this.targetLock = null;
 426                         return returnLock;
 427                 }
 428                 return null;
 429         }
 430
 431         public enum NEW_EVENT_STATUS {
 432                 FIRST_ONSET,
 433                 SUBSEQUENT_ONSET,
 434                 FIRST_ABATEMENT,
 435                 SUBSEQUENT_ABATEMENT,
 436                 SYNTAX_ERROR
 437                 ;
 438         }
 439
 440         public NEW_EVENT_STATUS onNewEvent(VirtualControlLoopEvent event) throws AAIException {
 441                 try {
 442                         this.checkEventSyntax(event);
 443                         if (event.getClosedLoopEventStatus() == ControlLoopEventStatus.ONSET) {
 444                                 //
 445                                 // Check if this is our original ONSET
 446                                 //
 447                                 if (event.equals(this.onset)) {
 448                                     //
 449                                     // Query A&AI if needed
 450                                     //
 451                                     queryAai(event);
 452
 453                                         //
 454                                         // DO NOT retract it
 455                                         //
 456                                         return NEW_EVENT_STATUS.FIRST_ONSET;
 457                                 }
 458                                 //
 459                                 // Log that we got an onset
 460                                 //
 461                                 this.numOnsets++;
 462                                 return NEW_EVENT_STATUS.SUBSEQUENT_ONSET;
 463                         } else if (event.getClosedLoopEventStatus() == ControlLoopEventStatus.ABATED) {
 464                                 //
 465                                 // Have we already got an abatement?
 466                                 //
 467                                 if (this.abatement == null) {
 468                                         //
 469                                         // Save this
 470                                         //
 471                                         this.abatement = event;
 472                                         //
 473                                         // Keep track that we received another
 474                                         //
 475                                         this.numAbatements++;
 476                                         //
 477                                         //
 478                                         //
 479                                         return NEW_EVENT_STATUS.FIRST_ABATEMENT;
 480                                 } else {
 481                                         //
 482                                         // Keep track that we received another
 483                                         //
 484                                         this.numAbatements++;
 485                                         //
 486                                         //
 487                                         //
 488                                         return NEW_EVENT_STATUS.SUBSEQUENT_ABATEMENT;
 489                                 }
 490                         } else {
 491                                 return NEW_EVENT_STATUS.SYNTAX_ERROR;
 492                         }
 493                 } catch (ControlLoopException e) {
 494                         logger.error("{}: onNewEvent threw: ",this, e);
 495                         return NEW_EVENT_STATUS.SYNTAX_ERROR;
 496                 }
 497         }
 498
 499         public VirtualControlLoopNotification setControlLoopTimedOut() {
 500                 this.controlLoopTimedOut = FinalResult.FINAL_FAILURE_TIMEOUT;
 501                 VirtualControlLoopNotification notification = new VirtualControlLoopNotification(this.onset);
 502                 notification.setNotification(ControlLoopNotificationType.FINAL_FAILURE);
 503                 notification.setMessage("Control Loop timed out");
 504                 notification.getHistory().addAll(this.controlLoopHistory);
 505                 return notification;
 506         }
 507
 508         public boolean isControlLoopTimedOut() {
 509                 return (this.controlLoopTimedOut == FinalResult.FINAL_FAILURE_TIMEOUT);
 510         }
 511
 512         public int      getControlLoopTimeout(Integer defaultTimeout) {
 513                 if (this.processor != null && this.processor.getControlLoop() != null) {
 514                         return this.processor.getControlLoop().getTimeout();
 515                 }
 516                 if (defaultTimeout != null) {
 517                         return defaultTimeout;
 518                 }
 519                 return 0;
 520         }
 521
 522         public AAIGETVnfResponse getVnfResponse() {
 523                 return vnfResponse;
 524         }
 525
 526         public AAIGETVserverResponse getVserverResponse() {
 527                 return vserverResponse;
 528         }
 529
 530         public void checkEventSyntax(VirtualControlLoopEvent event) throws ControlLoopException {
 531                 if (event.getClosedLoopEventStatus() == null ||
 532                                 (event.getClosedLoopEventStatus() != ControlLoopEventStatus.ONSET &&
 533                                 event.getClosedLoopEventStatus() != ControlLoopEventStatus.ABATED)) {
 534                         throw new ControlLoopException("Invalid value in closedLoopEventStatus");
 535                 }
 536                 if (event.getClosedLoopControlName() == null || event.getClosedLoopControlName().length() < 1) {
 537                         throw new ControlLoopException("No control loop name");
 538                 }
 539                 if (event.getRequestID() == null) {
 540                         throw new ControlLoopException("No request ID");
 541                 }
 542                 if (event.getClosedLoopEventStatus() == ControlLoopEventStatus.ABATED) {
 543                         return;
 544                 }
 545                 if (event.getTarget() == null || event.getTarget().length() < 1) {
 546                         throw new ControlLoopException("No target field");
 547                 } else if (! "VM_NAME".equalsIgnoreCase(event.getTarget()) &&
 548                                 ! "VNF_NAME".equalsIgnoreCase(event.getTarget()) &&
 549                                 ! "vserver.vserver-name".equalsIgnoreCase(event.getTarget()) &&
 550                                 ! "generic-vnf.vnf-id".equalsIgnoreCase(event.getTarget()) &&
 551                                 ! "generic-vnf.vnf-name".equalsIgnoreCase(event.getTarget()) ) {
 552                         throw new ControlLoopException("target field invalid - expecting VM_NAME or VNF_NAME");
 553                 }
 554                 if (event.getAAI() == null) {
 555             throw new ControlLoopException("AAI is null");
 556         }
 557         if (event.getAAI().get("generic-vnf.vnf-id") == null && event.getAAI().get("vserver.vserver-name") == null &&
 558                 event.getAAI().get("generic-vnf.vnf-name") == null) {
 559             throw new ControlLoopException("generic-vnf.vnf-id or generic-vnf.vnf-name or vserver.vserver-name information missing");
 560         }
 561         }
 562
 563         public void queryAai(VirtualControlLoopEvent event) throws AAIException {
 564                 if (event.getAAI().get("vserver.is-closed-loop-disabled") == null &&
 565                         event.getAAI().get("generic-vnf.is-closed-loop-disabled") == null) {
 566                         try {
 567                                 if (event.getAAI().get("generic-vnf.vnf-id") != null) {
 568                                         vnfResponse = getAAIVnfInfo(event);
 569                                         if (vnfResponse == null) {
 570                                                 throw new AAIException("AAI Response is null (query by vnf-id)");
 571                                         }
 572                                         if (vnfResponse.getRequestError() != null) {
 573                                                 throw new AAIException("AAI Responded with a request error (query by vnf-id)");
 574                                         }
 575                                         if (isClosedLoopDisabled(vnfResponse) == true) {
 576                                                 throw new AAIException("is-closed-loop-disabled is set to true");
 577                                         }
 578                                 } else if (event.getAAI().get("generic-vnf.vnf-name") != null) {
 579                                         vnfResponse = getAAIVnfInfo(event);
 580                                         if (vnfResponse == null) {
 581                                                 throw new AAIException("AAI Response is null (query by vnf-name)");
 582                                         }
 583                                         if (vnfResponse.getRequestError() != null) {
 584                                                 throw new AAIException("AAI Responded with a request error (query by vnf-name)");
 585                                         }
 586                                         if (isClosedLoopDisabled(vnfResponse) == true) {
 587                                                 throw new AAIException("is-closed-loop-disabled is set to true");
 588                                         }
 589                                 } else if (event.getAAI().get("vserver.vserver-name") != null) {
 590                                         vserverResponse = getAAIVserverInfo(event);
 591                                         if (vserverResponse == null) {
 592                                                 throw new AAIException("AAI Response is null (query by vserver-name)");
 593                                         }
 594                                         if (vserverResponse.getRequestError() != null) {
 595                                                 throw new AAIException("AAI responded with a request error (query by vserver-name)");
 596                                         }
 597                                         if (isClosedLoopDisabled(vserverResponse) == true) {
 598                                                 throw new AAIException("is-closed-loop-disabled is set to true");
 599                                         }
 600                                 }
 601                         } catch (Exception e) {
 602                                 logger.error("Exception from getAAIInfo: ", e);
 603                                 throw new AAIException("Exception from getAAIInfo: " + e.toString());
 604                         }
 605                 } else if (isClosedLoopDisabled(event)) {
 606                         throw new AAIException("is-closed-loop-disabled is set to true");
 607                 }
 608         }
 609
 610         public static boolean isClosedLoopDisabled(AAIGETVnfResponse aaiResponse) {
 611         if (aaiResponse != null && aaiResponse.getIsClosedLoopDisabled() != null) {
 612                 String value = aaiResponse.getIsClosedLoopDisabled();
 613                 if ("true".equalsIgnoreCase(value) || "T".equalsIgnoreCase(value) ||
 614                         "yes".equalsIgnoreCase(value)  || "Y".equalsIgnoreCase(value)) {
 615                         return true;
 616                 }
 617         }
 618
 619                 return false;
 620         }
 621
 622         public static boolean isClosedLoopDisabled(AAIGETVserverResponse aaiResponse) {
 623         if (aaiResponse != null && aaiResponse.getIsClosedLoopDisabled() != null) {
 624                 String value = aaiResponse.getIsClosedLoopDisabled();
 625                 if ("true".equalsIgnoreCase(value) || "T".equalsIgnoreCase(value) ||
 626                         "yes".equalsIgnoreCase(value)  || "Y".equalsIgnoreCase(value)) {
 627                         return true;
 628                 }
 629         }
 630
 631                 return false;
 632         }
 633
 634         public static boolean isClosedLoopDisabled(VirtualControlLoopEvent event) {
 635                 if ("true".equalsIgnoreCase(event.getAAI().get("vserver.is-closed-loop-disabled")) ||
 636                     "T".equalsIgnoreCase(event.getAAI().get("vserver.is-closed-loop-disabled")) ||
 637                     "yes".equalsIgnoreCase(event.getAAI().get("vserver.is-closed-loop-disabled")) ||
 638                     "Y".equalsIgnoreCase(event.getAAI().get("vserver.is-closed-loop-disabled"))) {
 639                         return true;
 640                 }
 641                 else if ("true".equalsIgnoreCase(event.getAAI().get("generic-vnf.is-closed-loop-disabled")) ||
 642                     "T".equalsIgnoreCase(event.getAAI().get("generic-vnf.is-closed-loop-disabled")) ||
 643                     "yes".equalsIgnoreCase(event.getAAI().get("generic-vnf.is-closed-loop-disabled")) ||
 644                     "Y".equalsIgnoreCase(event.getAAI().get("generic-vnf.is-closed-loop-disabled"))) {
 645                     return true;
 646             }
 647                 return false;
 648         }
 649
 650         public static AAIGETVserverResponse getAAIVserverInfo(VirtualControlLoopEvent event) throws ControlLoopException {
 651                 UUID requestID = event.getRequestID();
 652                 AAIGETVserverResponse response = null;
 653                 String vserverName = event.getAAI().get("vserver.vserver-name");
 654
 655                 try {
 656                 if (vserverName != null) {
 657                    aaiHostURL  = PolicyEngine.manager.getEnvironmentProperty("aai.url");
 658                    aaiUser     = PolicyEngine.manager.getEnvironmentProperty("aai.username");
 659                    aaiPassword = PolicyEngine.manager.getEnvironmentProperty("aai.password");
 660                    String aaiGetQueryByVserver = "/aai/v11/nodes/vservers?vserver-name=";
 661                            String url = aaiHostURL + aaiGetQueryByVserver;
 662                            logger.info("url: " + url);
 663                            response = new AAIManager(new RESTManager()).getQueryByVserverName(url, aaiUser, aaiPassword, requestID, vserverName);
 664                 }
 665             } catch (Exception e) {
 666                 logger.error("getAAIVserverInfo exception: ", e);
 667                 throw new ControlLoopException("Exception in getAAIVserverInfo: ", e);
 668         }
 669
 670                 return response;
 671         }
 672
 673         public static AAIGETVnfResponse getAAIVnfInfo(VirtualControlLoopEvent event) throws ControlLoopException {
 674                 UUID requestID = event.getRequestID();
 675                 AAIGETVnfResponse response = null;
 676                 String vnfName = event.getAAI().get("generic-vnf.vnf-name");
 677                 String vnfID   = event.getAAI().get("generic-vnf.vnf-id");
 678
 679                 aaiHostURL  = PolicyEngine.manager.getEnvironmentProperty("aai.url");
 680         aaiUser     = PolicyEngine.manager.getEnvironmentProperty("aai.username");
 681         aaiPassword = PolicyEngine.manager.getEnvironmentProperty("aai.password");
 682
 683                 try {
 684             if (vnfName != null) {
 685                    String aaiGetQueryByVnfName = "/aai/v11/network/generic-vnfs/generic-vnf?vnf-name=";
 686                            String url = aaiHostURL + aaiGetQueryByVnfName;
 687                            logger.info("url: " + url);
 688                            response = new AAIManager(new RESTManager()).getQueryByVnfName(url, aaiUser, aaiPassword, requestID, vnfName);
 689                 } else if (vnfID != null) {
 690                        String aaiGetQueryByVnfID = "/aai/v11/network/generic-vnfs/generic-vnf/";
 691                            String url = aaiHostURL + aaiGetQueryByVnfID;
 692                            logger.info("url: " + url);
 693                            response = new AAIManager(new RESTManager()).getQueryByVnfID(url, aaiUser, aaiPassword, requestID, vnfID);
 694                 }
 695             } catch (Exception e) {
 696                 logger.error("getAAIVnfInfo exception: ", e);
 697                 throw new ControlLoopException("Exception in getAAIVnfInfo: ", e);
 698         }
 699
 700                 return response;
 701         }
 702
 703         @Override
 704         public boolean isActive() {
 705                 // TODO
 706                 return true;
 707         }
 708
 709         @Override
 710         public boolean releaseLock() {
 711                 // TODO
 712                 return false;
 713         }
 714
 715         @Override
 716         public String toString() {
 717                 return "ControlLoopEventManager [closedLoopControlName=" + closedLoopControlName + ", requestID=" + requestID
 718                                 + ", processor=" + processor + ", onset=" + (onset != null ? onset.getRequestID() : "null") + ", numOnsets=" + numOnsets + ", numAbatements="
 719                                 + numAbatements + ", isActivated="
 720                                 + isActivated + ", currentOperation=" + currentOperation + ", targetLock=" + targetLock + "]";
 721         }
 722
 723 }