appc-adapters/appc-iaas-adapter/appc-iaas-adapter-bundle/src/main/java/org/onap/appc/adapter/iaas/provider/operation/impl/RebuildServer.java

   1 /*
   2 * ============LICENSE_START=======================================================
   3 * ONAP : APPC
   4 * ================================================================================
   5 * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
   6 * ================================================================================
   7 * Copyright (C) 2017 Amdocs
   8 * =============================================================================
   9 * Modifications Copyright (C) 2019 IBM
  10 * =============================================================================
  11 * Licensed under the Apache License, Version 2.0 (the "License");
  12 * you may not use this file except in compliance with the License.
  13 * You may obtain a copy of the License at
  14 *
  15 *      http://www.apache.org/licenses/LICENSE-2.0
  16 *
  17 * Unless required by applicable law or agreed to in writing, software
  18 * distributed under the License is distributed on an "AS IS" BASIS,
  19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 * See the License for the specific language governing permissions and
  21 * limitations under the License.
  22 *
  23 * ============LICENSE_END=========================================================
  24 */
  25
  26 package org.onap.appc.adapter.iaas.provider.operation.impl;
  27
  28 import com.att.cdp.exceptions.ContextConnectionException;
  29 import com.att.cdp.exceptions.ResourceNotFoundException;
  30 import com.att.cdp.exceptions.ZoneException;
  31 import com.att.cdp.zones.ComputeService;
  32 import com.att.cdp.zones.Context;
  33 import com.att.cdp.zones.ImageService;
  34 import com.att.cdp.zones.Provider;
  35 import com.att.cdp.zones.model.Image;
  36 import com.att.cdp.zones.model.ModelObject;
  37 import com.att.cdp.zones.model.Server;
  38 import com.att.cdp.zones.model.ServerBootSource;
  39 import com.att.eelf.configuration.EELFLogger;
  40 import com.att.eelf.configuration.EELFManager;
  41 import com.att.eelf.i18n.EELFResourceManager;
  42 import org.glassfish.grizzly.http.util.HttpStatus;
  43 import org.onap.appc.Constants;
  44 import com.fasterxml.jackson.databind.JsonNode;
  45 import com.fasterxml.jackson.databind.ObjectMapper;
  46 import org.onap.appc.adapter.iaas.ProviderAdapter;
  47 import org.onap.appc.adapter.iaas.impl.IdentityURL;
  48 import org.onap.appc.adapter.iaas.impl.RequestContext;
  49 import org.onap.appc.adapter.iaas.impl.RequestFailedException;
  50 import org.onap.appc.adapter.iaas.impl.VMURL;
  51 import org.onap.appc.adapter.iaas.provider.operation.common.constants.Property;
  52 import org.onap.appc.adapter.iaas.provider.operation.common.enums.Operation;
  53 import org.onap.appc.adapter.iaas.provider.operation.common.enums.Outcome;
  54 import org.onap.appc.adapter.iaas.provider.operation.impl.base.ProviderServerOperation;
  55 import org.onap.appc.configuration.Configuration;
  56 import org.onap.appc.configuration.ConfigurationFactory;
  57 import org.onap.appc.exceptions.APPCException;
  58 import org.onap.appc.i18n.Msg;
  59 import org.onap.appc.logging.LoggingConstants;
  60 import org.onap.appc.logging.LoggingUtils;
  61 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  62 import org.slf4j.MDC;
  63 import java.text.DateFormat;
  64 import java.text.SimpleDateFormat;
  65 import java.util.Date;
  66 import java.util.List;
  67 import java.util.Map;
  68 import java.util.TimeZone;
  69 import static org.onap.appc.adapter.iaas.provider.operation.common.enums.Operation.STOP_SERVICE;
  70 import static org.onap.appc.adapter.utils.Constants.ADAPTER_NAME;
  71 import com.att.cdp.exceptions.StateException;
  72
  73 public class RebuildServer extends ProviderServerOperation {
  74
  75     private static final EELFLogger logger = EELFManager.getInstance().getLogger(RebuildServer.class);
  76     private static EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
  77     private static final Configuration configuration = ConfigurationFactory.getConfiguration();
  78     // the sleep time used by thread.sleep to give "some time for OpenStack to start
  79     // processing the request"
  80     private long rebuildSleepTime = 10L * 1000L;
  81
  82     /**
  83      * Rebuild the indicated server with the indicated image. This method assumes
  84      * the server has been determined to be in the correct state to do the rebuild.
  85      *
  86      * @param rc
  87      *            The request context that manages the state and recovery of the
  88      *            request for the life of its processing.
  89      * @param server
  90      *            the server to be rebuilt
  91      * @param image
  92      *            The image to be used (or snapshot)
  93      * @throws RequestFailedException
  94      *             if the server does not change state in the allotted time
  95      */
  96     @SuppressWarnings("nls")
  97     private void rebuildServer(RequestContext rc, Server server, String image) throws RequestFailedException {
  98         logger.debug(Msg.REBUILD_SERVER, server.getId());
  99         String msg;
 100         Context context = server.getContext();
 101         Provider provider = context.getProvider();
 102         ComputeService service = context.getComputeService();
 103         /*
 104          * Set Time for Metrics Logger
 105          */
 106         setTimeForMetricsLogger();
 107         try {
 108             while (rc.attempt()) {
 109                 try {
 110                     server.rebuild(image);
 111                     break;
 112                 } catch (ContextConnectionException e) {
 113                     msg = EELFResourceManager.format(Msg.CONNECTION_FAILED_RETRY, provider.getName(), service.getURL(),
 114                             context.getTenant().getName(), context.getTenant().getId(), e.getMessage(),
 115                             Long.toString(rc.getRetryDelay()), Integer.toString(rc.getAttempts()),
 116                             Integer.toString(rc.getRetryLimit()));
 117                     logger.error(msg, e);
 118                     metricsLogger.error(msg, e);
 119                     rc.delay();
 120                 }
 121             }
 122             /*
 123              * We need to provide some time for OpenStack to start processing the request.
 124              */
 125             try {
 126                 Thread.sleep(rebuildSleepTime);
 127             } catch (InterruptedException e) {
 128                 logger.trace("Sleep threw interrupted exception, should never occur");
 129                 metricsLogger.trace("Sleep threw interrupted exception, should never occur");
 130                 Thread.currentThread().interrupt();
 131             }
 132         } catch (ZoneException e) {
 133             msg = EELFResourceManager.format(Msg.REBUILD_SERVER_FAILED, server.getName(), server.getId(),
 134                     e.getMessage());
 135             logger.error(msg);
 136             metricsLogger.error(msg);
 137             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.BAD_GATEWAY_502, server);
 138         }
 139         rc.reset();
 140         /*
 141          * Once we have started the process, now we wait for the final state of stopped.
 142          * This should be the final state (since we started the rebuild with the server
 143          * stopped).
 144          */
 145         waitForStateChange(rc, server, Server.Status.READY);
 146         if (rc.isFailed()) {
 147             msg = EELFResourceManager.format(Msg.CONNECTION_FAILED, provider.getName(), service.getURL());
 148             logger.error(msg);
 149             metricsLogger.error(msg);
 150             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.BAD_GATEWAY_502, server);
 151         }
 152         rc.reset();
 153     }
 154
 155     /**
 156      * This method is called to rebuild the provided server.
 157      * <p>
 158      * If the server was booted from a volume, then the request is failed
 159      * immediately and no action is taken. Rebuilding a VM from a bootable volume,
 160      * where the bootable volume itself is not rebuilt, serves no purpose.
 161      * </p>
 162      *
 163      * @param rc
 164      *            The request context that manages the state and recovery of the
 165      *            request for the life of its processing.
 166      * @param server
 167      *            The server to be rebuilt
 168      * @throws ZoneException
 169      *             When error occurs
 170      * @throws RequestFailedException
 171      *             When server status is error
 172      */
 173     @SuppressWarnings("nls")
 174     private void rebuildServer(RequestContext rc, Server server, SvcLogicContext ctx)
 175             throws ZoneException, RequestFailedException {
 176         ServerBootSource builtFrom = server.getBootSource();
 177         /*
 178          * Set Time for Metrics Logger
 179          */
 180         setTimeForMetricsLogger();
 181         String msg;
 182         // Throw error if boot source is unknown
 183         if (ServerBootSource.UNKNOWN.equals(builtFrom)) {
 184             logger.debug("Boot Source Unknown");
 185             msg = String.format("Error occured when retrieving server boot source [%s]!!!", server.getId());
 186             logger.error(msg);
 187             generateEvent(rc, false, msg);
 188             metricsLogger.error(msg);
 189             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.INTERNAL_SERVER_ERROR_500, server);
 190         }
 191
 192         // Throw exception for non image/snap boot source
 193         if (ServerBootSource.VOLUME.equals(builtFrom)) {
 194             logger.debug("Boot Source Not Supported built from bootable volume");
 195             msg = String.format("Rebuilding is currently not supported for servers built from bootable volumes [%s]",
 196                     server.getId());
 197             generateEvent(rc, false, msg);
 198             logger.error(msg);
 199             metricsLogger.error(msg);
 200             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.FORBIDDEN_403, server);
 201         }
 202         /*
 203          * Pending is a bit of a special case. If we find the server is in a pending
 204          * state, then the provider is in the process of changing state of the server.
 205          * So, lets try to wait a little bit and see if the state settles down to one we
 206          * can deal with. If not, then we have to fail the request.
 207          */
 208         Context context = server.getContext();
 209         Provider provider = context.getProvider();
 210         ComputeService service = context.getComputeService();
 211         if (server.getStatus().equals(Server.Status.PENDING)) {
 212             rc.reset();
 213             waitForStateChange(rc, server, Server.Status.READY, Server.Status.RUNNING, Server.Status.ERROR,
 214                     Server.Status.SUSPENDED, Server.Status.PAUSED);
 215         }
 216         // Is the skip Hypervisor check attribute populated?
 217         String skipHypervisorCheck = configuration.getProperty(Property.SKIP_HYPERVISOR_CHECK);
 218         if (skipHypervisorCheck == null && ctx != null) {
 219             skipHypervisorCheck = ctx.getAttribute(ProviderAdapter.SKIP_HYPERVISOR_CHECK);
 220         }
 221         // Always perform Hypervisor Status checks
 222         // unless the skip is set to true
 223         if (skipHypervisorCheck == null || (!skipHypervisorCheck.equalsIgnoreCase("true"))) {
 224             // Check of the Hypervisor for the VM Server is UP and reachable
 225             checkHypervisor(server);
 226         }
 227         /*
 228          * Get the image to use in this priority order: (1) If snapshot-id provided in
 229          * the request, use this (2) If any snapshots exist, then the latest snapshot is
 230          * used (3) Otherwise the image used to construct the VM is used.
 231          */
 232         String imageToUse = "";
 233         try {
 234             ObjectMapper mapper = new ObjectMapper();
 235             String payloadStr = configuration.getProperty(Property.PAYLOAD);
 236             if (payloadStr == null || payloadStr.isEmpty()) {
 237                 payloadStr = ctx.getAttribute(ProviderAdapter.PAYLOAD);
 238             }
 239             JsonNode payloadNode = mapper.readTree(payloadStr);
 240             imageToUse = payloadNode.get(ProviderAdapter.PROPERTY_REQUEST_SNAPSHOT_ID).textValue();
 241             logger.debug("Pulled snapshot-id " + imageToUse + " from the payload");
 242         } catch (Exception e) {
 243             logger.debug("Exception attempting to pull snapshot-id from the payload: " + e.toString());
 244         }
 245         List<Image> snapshots = server.getSnapshots();
 246         ImageService imageService = server.getContext().getImageService();
 247         List<Image> imageList = imageService.listImages();
 248         if (!imageToUse.isEmpty()) {
 249             logger.debug("Using snapshot-id " + imageToUse + " for the rebuild request");
 250             boolean imgFound = validateSnapshotId(imageToUse, snapshots, imageList);
 251
 252             if (!imgFound) {
 253                 logger.debug("Image Snapshot Not Found");
 254                 msg = EELFResourceManager.format(Msg.REBUILD_SERVER_FAILED, server.getName(), server.getId(),
 255                         "Invalid Snapshot-Id");
 256                 logger.error(msg);
 257                 metricsLogger.error(msg);
 258                 throw new RequestFailedException("Rebuild Server", msg, HttpStatus.FORBIDDEN_403, server);
 259             }
 260         } else if (snapshots != null && !snapshots.isEmpty()) {
 261             logger.debug("Using snapshot-id when image is Empty" + imageToUse + " for the rebuild request");
 262             imageToUse = snapshots.get(0).getId();
 263         } else {
 264             imageToUse = server.getImage();
 265             rc.reset();
 266             try {
 267                 while (rc.attempt()) {
 268                     try {
 269                         /*
 270                          * We are just trying to make sure that the image exists. We arent interested in
 271                          * the details at this point.
 272                          */
 273                         imageService.getImage(imageToUse);
 274                         break;
 275                     } catch (ContextConnectionException e) {
 276                         msg = EELFResourceManager.format(Msg.CONNECTION_FAILED_RETRY, provider.getName(),
 277                                 imageService.getURL(), context.getTenant().getName(), context.getTenant().getId(),
 278                                 e.getMessage(), Long.toString(rc.getRetryDelay()), Integer.toString(rc.getAttempts()),
 279                                 Integer.toString(rc.getRetryLimit()));
 280                         logger.error(msg, e);
 281                         metricsLogger.error(msg);
 282                         rc.delay();
 283                     }
 284                 }
 285             } catch (ZoneException e) {
 286                 msg = EELFResourceManager.format(Msg.IMAGE_NOT_FOUND, imageToUse, "rebuild");
 287                 generateEvent(rc, false, msg);
 288                 logger.error(msg);
 289                 metricsLogger.error(msg);
 290                 throw new RequestFailedException("Rebuild Server", msg, HttpStatus.METHOD_NOT_ALLOWED_405, server);
 291             }
 292         }
 293         if (rc.isFailed()) {
 294             msg = EELFResourceManager.format(Msg.CONNECTION_FAILED, provider.getName(), service.getURL());
 295             logger.error(msg);
 296             metricsLogger.error(msg);
 297             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.BAD_GATEWAY_502, server);
 298         }
 299         rc.reset();
 300         /*
 301          * We determine what to do based on the current state of the server
 302          */
 303         switch (server.getStatus()) {
 304         case DELETED:
 305             // Nothing to do, the server is gone
 306             msg = EELFResourceManager.format(Msg.SERVER_DELETED, server.getName(), server.getId(), server.getTenantId(),
 307                     "rebuilt");
 308             generateEvent(rc, false, msg);
 309             logger.error(msg);
 310             metricsLogger.error(msg);
 311             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.METHOD_NOT_ALLOWED_405, server);
 312         case RUNNING:
 313             // Attempt to stop the server, then rebuild it
 314             stopServer(rc, server);
 315             rc.reset();
 316             rebuildServer(rc, server, imageToUse);
 317             rc.reset();
 318             startServer(rc, server);
 319             generateEvent(rc, true, Outcome.SUCCESS.toString());
 320             metricsLogger.info("Server status: RUNNING");
 321             break;
 322         case ERROR:
 323             msg = EELFResourceManager.format(Msg.SERVER_ERROR_STATE, server.getName(), server.getId(),
 324                     server.getTenantId(), "rebuild");
 325             generateEvent(rc, false, msg);
 326             logger.error(msg);
 327             metricsLogger.error(msg);
 328             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.METHOD_NOT_ALLOWED_405, server);
 329         case READY:
 330             // Attempt to rebuild the server
 331             rebuildServer(rc, server, imageToUse);
 332             rc.reset();
 333             startServer(rc, server);
 334             generateEvent(rc, true, Outcome.SUCCESS.toString());
 335             metricsLogger.info("Server status: READY");
 336             break;
 337         case PAUSED:
 338             // if paused, un-pause it, stop it, and rebuild it
 339             unpauseServer(rc, server);
 340             rc.reset();
 341             stopServer(rc, server);
 342             rc.reset();
 343             rebuildServer(rc, server, imageToUse);
 344             rc.reset();
 345             startServer(rc, server);
 346             generateEvent(rc, true, Outcome.SUCCESS.toString());
 347             metricsLogger.info("Server status: PAUSED");
 348             break;
 349         case SUSPENDED:
 350             // Attempt to resume the suspended server, stop it, and rebuild it
 351             resumeServer(rc, server);
 352             rc.reset();
 353             stopServer(rc, server);
 354             rc.reset();
 355             rebuildServer(rc, server, imageToUse);
 356             rc.reset();
 357             startServer(rc, server);
 358             generateEvent(rc, true, Outcome.SUCCESS.toString());
 359             metricsLogger.info("Server status: SUSPENDED");
 360             break;
 361         default:
 362             // Hmmm, unknown status, should never occur
 363             msg = EELFResourceManager.format(Msg.UNKNOWN_SERVER_STATE, server.getName(), server.getId(),
 364                     server.getTenantId(), server.getStatus().name());
 365             generateEvent(rc, false, msg);
 366             logger.error(msg);
 367             metricsLogger.error(msg);
 368             throw new RequestFailedException("Rebuild Server", msg, HttpStatus.METHOD_NOT_ALLOWED_405, server);
 369         }
 370     }
 371
 372     /**
 373      * @see org.onap.appc.adapter.iaas.ProviderAdapter#rebuildServer(java.util.Map,
 374      *      org.onap.ccsdk.sli.core.sli.SvcLogicContext)
 375      */
 376     @SuppressWarnings("nls")
 377     public Server rebuildServer(Map<String, String> params, SvcLogicContext ctx) throws APPCException {
 378         Server server = null;
 379         RequestContext rc = new RequestContext(ctx);
 380         rc.isAlive();
 381         setTimeForMetricsLogger();
 382         String msg;
 383         try {
 384             validateParametersExist(params, ProviderAdapter.PROPERTY_INSTANCE_URL,
 385                     ProviderAdapter.PROPERTY_PROVIDER_NAME);
 386             String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
 387             String vm_url = params.get(ProviderAdapter.PROPERTY_INSTANCE_URL);
 388             VMURL vm = VMURL.parseURL(vm_url);
 389             if (validateVM(rc, appName, vm_url, vm))
 390                 return null;
 391             IdentityURL ident = IdentityURL.parseURL(params.get(ProviderAdapter.PROPERTY_IDENTITY_URL));
 392             String identStr = (ident == null) ? null : ident.toString();
 393             ctx.setAttribute("REBUILD_STATUS", "ERROR");
 394             Context context = null;
 395             String tenantName = "Unknown";// to be used also in case of exception
 396             try {
 397                 context = getContext(rc, vm_url, identStr);
 398                 if (context != null) {
 399                     tenantName = context.getTenantName();// this varaible also is used in case of exception
 400                     rc.reset();
 401                     server = lookupServer(rc, context, vm.getServerId());
 402                     logger.debug(Msg.SERVER_FOUND, vm_url, tenantName, server.getStatus().toString());
 403                     // Manually checking image service until new PAL release
 404                     if (hasImageAccess(rc, context)) {
 405                         rebuildServer(rc, server, ctx);
 406                         doSuccess(rc);
 407                         ctx.setAttribute("REBUILD_STATUS", "SUCCESS");
 408                     } else {
 409                         msg = EELFResourceManager.format(Msg.REBUILD_SERVER_FAILED, server.getName(), server.getId(),
 410                                 "Accessing Image Service Failed");
 411                         logger.error(msg);
 412                         metricsLogger.error(msg);
 413                         doFailure(rc, HttpStatus.FORBIDDEN_403, msg);
 414                     }
 415                     context.close();
 416                 } else {
 417                     ctx.setAttribute("REBUILD_STATUS", "CONTEXT_NOT_FOUND");
 418                 }
 419             } catch (StateException ex) {
 420                 logger.error(ex.getMessage());
 421                 ctx.setAttribute("REBUILD_STATUS", "ERROR");
 422                 doFailure(rc, HttpStatus.CONFLICT_409, ex.getMessage());
 423             } catch (RequestFailedException e) {
 424                 doFailure(rc, e.getStatus(), e.getMessage());
 425                 ctx.setAttribute("REBUILD_STATUS", "ERROR");
 426             } catch (ResourceNotFoundException e) {
 427                 msg = EELFResourceManager.format(Msg.SERVER_NOT_FOUND, e, vm_url);
 428                 ctx.setAttribute("REBUILD_STATUS", "ERROR");
 429                 logger.error(msg);
 430                 metricsLogger.error(msg);
 431                 doFailure(rc, HttpStatus.NOT_FOUND_404, msg);
 432             } catch (Exception e1) {
 433                 msg = EELFResourceManager.format(Msg.SERVER_OPERATION_EXCEPTION, e1, e1.getClass().getSimpleName(),
 434                         STOP_SERVICE.toString(), vm_url, tenantName);
 435                 ctx.setAttribute("REBUILD_STATUS", "ERROR");
 436                 logger.error(msg, e1);
 437                 metricsLogger.error(msg);
 438                 doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, msg);
 439             }
 440         } catch (RequestFailedException e) {
 441             ctx.setAttribute("REBUILD_STATUS", "ERROR");
 442             doFailure(rc, e.getStatus(), e.getMessage());
 443         }
 444         return server;
 445     }
 446
 447     @Override
 448     protected ModelObject executeProviderOperation(Map<String, String> params, SvcLogicContext context)
 449             throws APPCException {
 450         setMDC(Operation.REBUILD_SERVICE.toString(), "App-C IaaS Adapter:Rebuild", ADAPTER_NAME);
 451         logOperation(Msg.REBUILDING_SERVER, params, context);
 452         setTimeForMetricsLogger();
 453         metricsLogger.info("Executing Provider Operation: Rebuild");
 454         return rebuildServer(params, context);
 455     }
 456
 457     private void setTimeForMetricsLogger() {
 458         String timestamp = LoggingUtils.generateTimestampStr(((Date) new Date()).toInstant());
 459         MDC.put(LoggingConstants.MDCKeys.BEGIN_TIMESTAMP, timestamp);
 460         MDC.put(LoggingConstants.MDCKeys.END_TIMESTAMP, timestamp);
 461         MDC.put(LoggingConstants.MDCKeys.ELAPSED_TIME, "0");
 462         MDC.put(LoggingConstants.MDCKeys.STATUS_CODE, LoggingConstants.StatusCodes.COMPLETE);
 463         MDC.put(LoggingConstants.MDCKeys.TARGET_ENTITY, "cdp");
 464         MDC.put(LoggingConstants.MDCKeys.TARGET_SERVICE_NAME, "rebuild server");
 465         MDC.put(LoggingConstants.MDCKeys.CLASS_NAME,
 466                 "org.onap.appc.adapter.iaas.provider.operation.impl.RebuildServer");
 467
 468     }
 469
 470     /**
 471      * Sets the sleep time used by thread.sleep to give "some time for OpenStack to
 472      * start processing the request".
 473      *
 474      * @param millis
 475      *            Time to sleep in milliseconds
 476      */
 477     public void setRebuildSleepTime(long millis) {
 478         this.rebuildSleepTime = millis;
 479     }
 480
 481     private boolean validateSnapshotId(String imageToUse, List<Image> snapshotList, List<Image> imageList) {
 482
 483         logger.debug("Validating snapshot-id " + imageToUse + " for the rebuild request from payload");
 484         boolean imageFound = false;
 485         // If image is empty , the validation si not required . Hence return false.
 486         // Ideally function should not be called with empty image Id
 487         if (imageToUse.isEmpty()) {
 488             return imageFound;
 489         } else {
 490             // The supplied snapshot id can be a snapshot id or an image Id. Check both
 491             // available for the vnf.
 492             // Check against snapshot id list and image list
 493             return findImageExists(snapshotList, imageToUse, "snapshotidList")
 494                     || findImageExists(imageList, imageToUse, "imageidList");
 495         }
 496     }
 497
 498     boolean findImageExists(List<Image> list, String imageToUse, String source) {
 499         boolean imageExists = false;
 500         logger.debug("Available Image-ids from :" + source + "Start\n");
 501         for (Image img : list) {
 502             String imgId = img.getId();
 503             logger.debug("Image Id - " + imgId + "\n");
 504             if (imgId.equals(imageToUse)) {
 505                 logger.debug("Image found in available " + source);
 506                 imageExists = true;
 507                 break;
 508             }
 509         }
 510         return imageExists;
 511
 512     }
 513 }