catalog-fe/src/main/java/org/openecomp/sdc/fe/impl/HealthCheckScheduledTask.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2020 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.openecomp.sdc.fe.impl;
  22
  23 import com.fasterxml.jackson.core.type.TypeReference;
  24 import com.fasterxml.jackson.databind.ObjectMapper;
  25 import com.google.common.annotations.VisibleForTesting;
  26 import com.google.common.collect.Lists;
  27 import com.google.gson.Gson;
  28 import com.google.gson.GsonBuilder;
  29 import com.google.gson.JsonSyntaxException;
  30 import com.google.gson.reflect.TypeToken;
  31 import org.apache.commons.collections.CollectionUtils;
  32 import org.apache.commons.lang3.StringUtils;
  33 import org.apache.http.HttpStatus;
  34 import org.openecomp.sdc.common.api.Constants;
  35 import org.openecomp.sdc.common.api.HealthCheckInfo;
  36 import org.openecomp.sdc.common.api.HealthCheckWrapper;
  37 import org.openecomp.sdc.common.config.EcompErrorEnum;
  38 import org.openecomp.sdc.common.http.client.api.HttpRequest;
  39 import org.openecomp.sdc.common.http.client.api.HttpResponse;
  40 import org.openecomp.sdc.common.http.config.HttpClientConfig;
  41 import org.openecomp.sdc.common.http.config.Timeouts;
  42 import org.openecomp.sdc.common.impl.ExternalConfiguration;
  43 import org.openecomp.sdc.common.log.elements.ErrorLogOptionalData;
  44 import org.openecomp.sdc.common.log.elements.LogFieldsMdcHandler;
  45 import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
  46 import org.openecomp.sdc.common.log.wrappers.Logger;
  47 import org.openecomp.sdc.common.util.HealthCheckUtil;
  48 import org.openecomp.sdc.fe.config.Configuration;
  49 import org.openecomp.sdc.fe.config.FeEcompErrorManager;
  50
  51 import java.io.IOException;
  52 import java.lang.reflect.Type;
  53 import java.util.ArrayList;
  54 import java.util.Arrays;
  55 import java.util.Collections;
  56 import java.util.List;
  57 import java.util.Map;
  58
  59 import static org.openecomp.sdc.common.api.Constants.HC_COMPONENT_CATALOG_FACADE_MS;
  60 import static org.openecomp.sdc.common.api.Constants.HC_COMPONENT_DCAE;
  61 import static org.openecomp.sdc.common.api.Constants.HC_COMPONENT_ON_BOARDING;
  62
  63 public class HealthCheckScheduledTask implements Runnable {
  64     private static final Logger healthLogger = Logger.getLogger("asdc.fe.healthcheck");
  65     private static final Logger log = Logger.getLogger(HealthCheckScheduledTask.class.getName());
  66     private static final String LOG_PARTNER_NAME = "SDC.FE";
  67     private static final String LOG_TARGET_ENTITY_BE = "SDC.BE";
  68     private static final String LOG_TARGET_ENTITY_CONFIG = "SDC.FE.Configuration";
  69     private static final String LOG_TARGET_SERVICE_NAME_OB = "getOnboardingConfig";
  70     private static final String LOG_TARGET_SERVICE_NAME_DCAE = "getDCAEConfig";
  71     private static final String LOG_TARGET_SERVICE_NAME_FACADE = "getCatalogFacadeConfig";
  72     private static final String LOG_SERVICE_NAME = "/rest/healthCheck";
  73     private static LogFieldsMdcHandler mdcFieldsHandler = new LogFieldsMdcHandler();
  74
  75     private static final String URL = "%s://%s:%s/sdc2/rest/healthCheck";
  76
  77     private final List<String> healthCheckFeComponents =
  78             Arrays.asList(HC_COMPONENT_ON_BOARDING, HC_COMPONENT_DCAE, HC_COMPONENT_CATALOG_FACADE_MS);
  79     private static final HealthCheckUtil healthCheckUtil = new HealthCheckUtil();
  80     private static final String DEBUG_CONTEXT = "HEALTH_FE";
  81     private static final String EXTERNAL_HC_URL = "%s://%s:%s%s";
  82     private static String ONBOARDING_HC_URL;
  83     private static String DCAE_HC_URL;
  84     private static String CATALOG_FACADE_MS_HC_URL;
  85
  86     private final HealthCheckService service;
  87
  88     HealthCheckScheduledTask(HealthCheckService service) {
  89         this.service = service;
  90     }
  91
  92     static String getOnboardingHcUrl() {
  93         return ONBOARDING_HC_URL;
  94     }
  95
  96     static String getDcaeHcUrl() {
  97         return DCAE_HC_URL;
  98     }
  99
 100     static String getCatalogFacadeMsHcUrl() {
 101         return CATALOG_FACADE_MS_HC_URL;
 102     }
 103
 104
 105     @Override
 106     public void run() {
 107         mdcFieldsHandler.addInfoForErrorAndDebugLogging(LOG_PARTNER_NAME);
 108         healthLogger.trace("Executing FE Health Check Task - Start");
 109         HealthCheckService.HealthStatus currentHealth = checkHealth();
 110         int currentHealthStatus = currentHealth.getStatusCode();
 111         healthLogger.trace("Executing FE Health Check Task - Status = {}", currentHealthStatus);
 112
 113         // In case health status was changed, issue alarm/recovery
 114         if (currentHealthStatus != service.getLastHealthStatus().getStatusCode()) {
 115             log.trace("FE Health State Changed to {}. Issuing alarm / recovery alarm...", currentHealthStatus);
 116             logFeAlarm(currentHealthStatus);
 117         }
 118         // Anyway, update latest response
 119         service.setLastHealthStatus(currentHealth);
 120     }
 121
 122     private List<HealthCheckInfo> addHostedComponentsFeHealthCheck(String baseComponent, boolean requestedByBE) {
 123         String healthCheckUrl = getExternalComponentHcUrl(baseComponent);
 124         String serviceName = getExternalComponentHcUri(baseComponent);
 125         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(baseComponent)
 126                 .targetServiceName(serviceName).build();
 127
 128         StringBuilder description = new StringBuilder("");
 129         int connectTimeoutMs = 3000;
 130         int readTimeoutMs = service.getConfig().getHealthCheckSocketTimeoutInMs(5000);
 131
 132         if (healthCheckUrl != null) {
 133             ObjectMapper mapper = new ObjectMapper();
 134             try {
 135                 HttpResponse<String> response = HttpRequest.get(healthCheckUrl, new HttpClientConfig(new Timeouts(connectTimeoutMs, readTimeoutMs)));
 136                 int beStatus = response.getStatusCode();
 137                 if (beStatus == HttpStatus.SC_OK || beStatus == HttpStatus.SC_INTERNAL_SERVER_ERROR) {
 138                     String beJsonResponse = response.getResponse();
 139                     return convertResponse(beJsonResponse, mapper, baseComponent, description, beStatus);
 140                 } else {
 141                     description.append("Response code: " + beStatus);
 142                     log.trace("{} Health Check Response code: {}", baseComponent, beStatus);
 143                 }
 144             } catch (Exception e) {
 145                 log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, serviceName, errorLogOptionalData, baseComponent + " unexpected response ", e);
 146                 description.append(baseComponent + " Unexpected response: " + e.getMessage());
 147             }
 148         } else {
 149             description.append(baseComponent + " health check Configuration is missing");
 150         }
 151
 152         String  compName = requestedByBE ? Constants.HC_COMPONENT_FE : baseComponent;
 153         return Collections.singletonList(new HealthCheckInfo(
 154                 compName,
 155                 HealthCheckInfo.HealthCheckStatus.DOWN,
 156                 null,
 157                 description.toString()));
 158     }
 159
 160     private String getExternalComponentHcUri(String baseComponent) {
 161         String healthCheckUri = null;
 162         switch (baseComponent) {
 163             case HC_COMPONENT_ON_BOARDING:
 164                 healthCheckUri = service.getConfig().getOnboarding().getHealthCheckUriFe();
 165                 break;
 166             case HC_COMPONENT_DCAE:
 167                 healthCheckUri = service.getConfig().getDcae().getHealthCheckUri();
 168                 break;
 169             case HC_COMPONENT_CATALOG_FACADE_MS:
 170                 healthCheckUri = service.getConfig().getCatalogFacadeMs().getHealthCheckUri();
 171                 break;
 172             default:
 173                 log.debug("Unsupported base component {}", baseComponent);
 174                 break;
 175         }
 176         return healthCheckUri;
 177     }
 178
 179
 180     @VisibleForTesting
 181     String getExternalComponentHcUrl(String baseComponent) {
 182         String healthCheckUrl = null;
 183         switch (baseComponent) {
 184             case HC_COMPONENT_ON_BOARDING:
 185                 healthCheckUrl = getOnboardingHealthCheckUrl();
 186                 break;
 187             case HC_COMPONENT_DCAE:
 188                 healthCheckUrl = getDcaeHealthCheckUrl();
 189                 break;
 190             case HC_COMPONENT_CATALOG_FACADE_MS:
 191                 healthCheckUrl = getCatalogFacadeHealthCheckUrl();
 192                 break;
 193             default:
 194                 log.debug("Unsupported base component {}", baseComponent);
 195                 break;
 196         }
 197         return healthCheckUrl;
 198     }
 199
 200     private void logFeAlarm(int lastFeStatus) {
 201         switch (lastFeStatus) {
 202             case 200:
 203                 FeEcompErrorManager.getInstance().processEcompError(DEBUG_CONTEXT, EcompErrorEnum.FeHealthCheckRecovery, "FE Health Recovered");
 204                 FeEcompErrorManager.getInstance().logFeHealthCheckRecovery("FE Health Recovered");
 205                 break;
 206             case 500:
 207                 FeEcompErrorManager.getInstance().processEcompError(DEBUG_CONTEXT, EcompErrorEnum.FeHealthCheckError, "Connection with ASDC-BE is probably down");
 208                 FeEcompErrorManager.getInstance().logFeHealthCheckError("Connection with ASDC-BE is probably down");
 209                 break;
 210             default:
 211                 break;
 212         }
 213     }
 214
 215     private HealthCheckService.HealthStatus checkHealth() {
 216         Gson gson = new GsonBuilder().setPrettyPrinting().create();
 217         Configuration config = service.getConfig();
 218
 219         HealthCheckWrapper feAggHealthCheck;
 220         boolean aggregateFeStatus = false;
 221         String redirectedUrl = String.format(URL, config.getBeProtocol(), config.getBeHost(),
 222                 Constants.HTTPS.equals(config.getBeProtocol()) ? config.getBeSslPort() : config.getBeHttpPort());
 223         int connectTimeoutMs = 3000;
 224         int readTimeoutMs = config.getHealthCheckSocketTimeoutInMs(5000);
 225         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(LOG_TARGET_ENTITY_BE)
 226                 .targetServiceName(LOG_SERVICE_NAME).build();
 227
 228         try {
 229             HttpResponse<String> response = HttpRequest.get(redirectedUrl, new HttpClientConfig(new Timeouts(connectTimeoutMs, readTimeoutMs)));
 230             log.debug("HC call to BE - status code is {}", response.getStatusCode());
 231             String beJsonResponse = response.getResponse();
 232             feAggHealthCheck = getFeHealthCheckInfos(gson, beJsonResponse);
 233             if (response.getStatusCode() != HttpStatus.SC_INTERNAL_SERVER_ERROR) {
 234                 aggregateFeStatus = healthCheckUtil.getAggregateStatus(feAggHealthCheck.getComponentsInfo(), getExcludedComponentList());
 235             }
 236             //Getting aggregate FE status
 237             return new HealthCheckService.HealthStatus(aggregateFeStatus ? HttpStatus.SC_OK : HttpStatus.SC_INTERNAL_SERVER_ERROR, gson.toJson(feAggHealthCheck));
 238
 239         }
 240         catch (Exception e) {
 241             log.debug("Health Check error when trying to connect to BE or external FE. Error: {}", e);
 242             log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, LOG_SERVICE_NAME, errorLogOptionalData,
 243                     "Health Check error when trying to connect to BE or external FE.", e.getMessage());
 244             FeEcompErrorManager.getInstance().processEcompError(DEBUG_CONTEXT,EcompErrorEnum.FeHealthCheckGeneralError, "Unexpected FE Health check error");
 245             FeEcompErrorManager.getInstance().logFeHealthCheckGeneralError("Unexpected FE Health check error");
 246             return new HealthCheckService.HealthStatus(HttpStatus.SC_INTERNAL_SERVER_ERROR, gson.toJson(getBeDownCheckInfos()));
 247         }
 248     }
 249
 250     @VisibleForTesting
 251     List<String> getExcludedComponentList() {
 252         List <String> excludedComponentList = Lists.newArrayList(service.getConfig().getHealthStatusExclude());
 253         if (isCatalogFacadeMsExcluded()) {
 254             if (log.isInfoEnabled()) {
 255                 log.info(HC_COMPONENT_CATALOG_FACADE_MS + " has been added to the Healthcheck exclude list");
 256             }
 257             excludedComponentList.add(HC_COMPONENT_CATALOG_FACADE_MS);
 258         }
 259         return excludedComponentList;
 260     }
 261
 262     private boolean isCatalogFacadeMsExcluded() {
 263         //CATALOG_FACADE_MS is excluded if it is not configured
 264         return service.getConfig().getCatalogFacadeMs() == null || StringUtils.isEmpty(service.getConfig().getCatalogFacadeMs().getPath());
 265     }
 266
 267     private HealthCheckWrapper getFeHealthCheckInfos(Gson gson, String responseString) {
 268         Type wrapperType = new TypeToken<HealthCheckWrapper>() {
 269         }.getType();
 270         HealthCheckWrapper healthCheckWrapper = gson.fromJson(responseString, wrapperType);
 271         String description = "OK";
 272         healthCheckWrapper.getComponentsInfo()
 273                 .add(new HealthCheckInfo(Constants.HC_COMPONENT_FE, HealthCheckInfo.HealthCheckStatus.UP, ExternalConfiguration.getAppVersion(), description));
 274
 275         //add FE hosted components
 276         for (String component : healthCheckFeComponents) {
 277             buildHealthCheckListForComponent(component, healthCheckWrapper);
 278         }
 279         return healthCheckWrapper;
 280     }
 281
 282     private void buildHealthCheckListForComponent(String component, HealthCheckWrapper healthCheckWrapper) {
 283
 284         HealthCheckInfo componentHCInfoFromBE = getComponentHcFromList(component, healthCheckWrapper.getComponentsInfo());
 285         List<HealthCheckInfo> componentHCInfoList = addHostedComponentsFeHealthCheck(component, componentHCInfoFromBE != null);
 286         HealthCheckInfo calculateStatusFor;
 287         if (componentHCInfoFromBE != null) {
 288             if (log.isDebugEnabled()) {
 289                 log.debug("{} component healthcheck info has been received from the BE and from the component itself", component);
 290             }
 291             //update the subcomponents's HC if exist and recalculate the component status according to the subcomponets HC
 292             calculateStatusFor = updateSubComponentsInfoOfBeHc(componentHCInfoFromBE, componentHCInfoList);
 293         }
 294         else {
 295
 296             //this component is not in the BE HC response, need to add it and calculate the aggregated status
 297             if (log.isDebugEnabled()) {
 298                 log.debug("{} component healthcheck info has been received from the component itself, it is not monitored by the BE", component);
 299             }
 300             //we assume that response from components which HC is not requested by BE have only one entry in the responded list
 301             calculateStatusFor = componentHCInfoList.get(0);
 302             healthCheckWrapper.getComponentsInfo()
 303                         .add(calculateStatusFor);
 304
 305         }
 306         calculateAggregatedStatus(calculateStatusFor);
 307
 308     }
 309
 310     @VisibleForTesting
 311     HealthCheckInfo updateSubComponentsInfoOfBeHc(HealthCheckInfo componentHCInfoFromBE, List<HealthCheckInfo> componentHcReceivedByFE) {
 312         if (!CollectionUtils.isEmpty(componentHcReceivedByFE)) {
 313             //this component HC is received from BE, just need to calculate the status for that
 314             if (componentHCInfoFromBE.getComponentsInfo() == null) {
 315                 componentHCInfoFromBE.setComponentsInfo(new ArrayList<>());
 316             }
 317             componentHCInfoFromBE.getComponentsInfo().addAll(componentHcReceivedByFE);
 318         }
 319         return componentHCInfoFromBE;
 320     }
 321
 322     private HealthCheckInfo getComponentHcFromList(String component, List<HealthCheckInfo>  hcList) {
 323         return hcList.stream().filter(c -> c.getHealthCheckComponent().equals(component)).findFirst().orElse(null);
 324     }
 325
 326     private void calculateAggregatedStatus(HealthCheckInfo baseComponentHCInfo) {
 327         if (!CollectionUtils.isEmpty(baseComponentHCInfo.getComponentsInfo())) {
 328             boolean status = healthCheckUtil.getAggregateStatus(baseComponentHCInfo.getComponentsInfo(), getExcludedComponentList());
 329             baseComponentHCInfo.setHealthCheckStatus(status ?
 330                     HealthCheckInfo.HealthCheckStatus.UP : HealthCheckInfo.HealthCheckStatus.DOWN);
 331
 332             String componentsDesc = healthCheckUtil.getAggregateDescription(baseComponentHCInfo.getComponentsInfo());
 333             if (!StringUtils.isEmpty(componentsDesc)) { //aggregated description contains all the internal components desc
 334                 baseComponentHCInfo.setDescription(componentsDesc);
 335             }
 336         }
 337     }
 338
 339     private HealthCheckWrapper getBeDownCheckInfos() {
 340         List<HealthCheckInfo> healthCheckInfos = new ArrayList<>();
 341         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_FE, HealthCheckInfo.HealthCheckStatus.UP,
 342                 ExternalConfiguration.getAppVersion(), "OK"));
 343         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_BE, HealthCheckInfo.HealthCheckStatus.DOWN, null, null));
 344         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_JANUSGRAPH, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 345         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_CASSANDRA, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 346         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_DISTRIBUTION_ENGINE, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 347         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_ON_BOARDING, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 348         healthCheckInfos.add(new HealthCheckInfo(Constants.HC_COMPONENT_DCAE, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 349         healthCheckInfos.add(new HealthCheckInfo(HC_COMPONENT_CATALOG_FACADE_MS, HealthCheckInfo.HealthCheckStatus.UNKNOWN, null, null));
 350         return new HealthCheckWrapper(healthCheckInfos, "UNKNOWN", "UNKNOWN");
 351     }
 352
 353     String buildHealthCheckUrl(String protocol, String host, Integer port, String uri) {
 354         return String.format(EXTERNAL_HC_URL, protocol, host, port, uri);
 355     }
 356
 357     private String getOnboardingHealthCheckUrl() {
 358         Configuration.OnboardingConfig onboardingConfig = service.getConfig().getOnboarding();
 359         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(LOG_TARGET_ENTITY_CONFIG)
 360                 .targetServiceName(LOG_TARGET_SERVICE_NAME_OB).build();
 361
 362         if (StringUtils.isEmpty(ONBOARDING_HC_URL)) {
 363             if (onboardingConfig != null) {
 364                 ONBOARDING_HC_URL = buildHealthCheckUrl(
 365                         onboardingConfig.getProtocolFe(), onboardingConfig.getHostFe(),
 366                         onboardingConfig.getPortFe(), onboardingConfig.getHealthCheckUriFe());
 367             }
 368             else {
 369                 log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, LOG_SERVICE_NAME, errorLogOptionalData,
 370                         "Onboarding health check configuration is missing.");
 371             }
 372         }
 373         return ONBOARDING_HC_URL;
 374     }
 375
 376     private String getDcaeHealthCheckUrl() {
 377         Configuration.DcaeConfig dcaeConfig = service.getConfig().getDcae();
 378         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(LOG_TARGET_ENTITY_CONFIG)
 379                 .targetServiceName(LOG_TARGET_SERVICE_NAME_DCAE).build();
 380
 381         if (StringUtils.isEmpty(DCAE_HC_URL)) {
 382             if (dcaeConfig != null) {
 383                 DCAE_HC_URL = buildHealthCheckUrl(
 384                         dcaeConfig.getProtocol(), dcaeConfig.getHost(),
 385                         dcaeConfig.getPort(), dcaeConfig.getHealthCheckUri());
 386             }
 387             else {
 388                 log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, LOG_SERVICE_NAME, errorLogOptionalData,
 389                         "DCAE health check configuration is missing.");
 390             }
 391         }
 392         return DCAE_HC_URL;
 393     }
 394
 395     private String getCatalogFacadeHealthCheckUrl() {
 396         Configuration.CatalogFacadeMsConfig catalogFacadeMsConfig = service.getConfig().getCatalogFacadeMs();
 397         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(LOG_TARGET_ENTITY_CONFIG)
 398                 .targetServiceName(LOG_TARGET_SERVICE_NAME_FACADE).build();
 399
 400         if (StringUtils.isEmpty(CATALOG_FACADE_MS_HC_URL)) {
 401             if (catalogFacadeMsConfig != null) {
 402                 CATALOG_FACADE_MS_HC_URL = buildHealthCheckUrl(
 403                         catalogFacadeMsConfig.getProtocol(), catalogFacadeMsConfig.getHost(),
 404                         catalogFacadeMsConfig.getPort(), catalogFacadeMsConfig.getHealthCheckUri());
 405             }
 406             else {
 407                 log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, LOG_SERVICE_NAME, errorLogOptionalData,
 408                         "Catalog Facade MS health check configuration is missing.");
 409             }
 410         }
 411         return CATALOG_FACADE_MS_HC_URL;
 412     }
 413
 414
 415     private List<HealthCheckInfo> convertResponse(String beJsonResponse, ObjectMapper mapper, String baseComponent, StringBuilder description, int beStatus) {
 416         ErrorLogOptionalData errorLogOptionalData = ErrorLogOptionalData.newBuilder().targetEntity(baseComponent)
 417                 .targetServiceName(LOG_SERVICE_NAME).build();
 418
 419         try {
 420             Map<String, Object> healthCheckMap = mapper.readValue(beJsonResponse, new TypeReference<Map<String, Object>>() {
 421             });
 422             if (healthCheckMap.containsKey("componentsInfo")) {
 423                 return mapper.convertValue(healthCheckMap.get("componentsInfo"), new TypeReference<List<HealthCheckInfo>>() {
 424                 });
 425             } else {
 426                 description.append("Internal components are missing");
 427             }
 428         } catch (JsonSyntaxException | IOException e) {
 429             log.error(EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR, LOG_SERVICE_NAME, errorLogOptionalData,
 430                     baseComponent + " Unexpected response body ", e);
 431             description.append(baseComponent)
 432                     .append("Unexpected response body. Response code: ")
 433                     .append(beStatus);
 434         }
 435         return new ArrayList<>();
 436     }
 437 }