Removed log constants

Removed constants associated with audit/metrics logging.
Deleted unused code. Some other safe cleanup and refactoring.

Change-Id: Idfda72e1fb27ca695a74f2a09cb46381c9caed1a
Issue-ID: SDC-772
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>

26 files changed, 39 insertions, 176 deletions

diff --git a/openecomp-be/api/openecomp-sdc-rest-webapp/application-config-rest/application-config-rest-services/src/main/java/org/openecomp/sdcrests/applicationconfig/rest/services/ApplicationConfigurationImpl.java b/openecomp-be/api/openecomp-sdc-rest-webapp/application-config-rest/application-config-rest-services/src/main/java/org/openecomp/sdcrests/applicationconfig/rest/services/ApplicationConfigurationImpl.java
index 99ef94d166..9a722a237b 100644
--- a/openecomp-be/api/openecomp-sdc-rest-webapp/application-config-rest/application-config-rest-services/src/main/java/org/openecomp/sdcrests/applicationconfig/rest/services/ApplicationConfigurationImpl.java
+++ b/openecomp-be/api/openecomp-sdc-rest-webapp/application-config-rest/application-config-rest-services/src/main/java/org/openecomp/sdcrests/applicationconfig/rest/services/ApplicationConfigurationImpl.java
@@ -24,15 +24,12 @@ import org.openecomp.core.utilities.applicationconfig.dao.type.ApplicationConfig
 import org.openecomp.core.utilities.applicationconfig.type.ConfigurationData;
 import org.openecomp.core.utilities.file.FileUtils;
 import org.openecomp.sdc.applicationconfig.ApplicationConfigManager;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerServiceName;
 import org.openecomp.sdcrests.applicationconfig.rest.ApplicationConfiguration;
 import org.openecomp.sdcrests.applicationconfig.rest.mapping.MapApplicationConfigEntityToApplicationConfigDto;
 import org.openecomp.sdcrests.applicationconfig.rest.mapping.MapConfigurationDataToConfigurationDataDto;
 import org.openecomp.sdcrests.applicationconfiguration.types.ApplicationConfigDto;
 import org.openecomp.sdcrests.applicationconfiguration.types.ConfigurationDataDto;
 import org.openecomp.sdcrests.wrappers.GenericCollectionWrapper;
-import org.slf4j.MDC;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Service;
@@ -55,18 +52,13 @@ public class ApplicationConfigurationImpl implements ApplicationConfiguration {
 
   @Override
   public Response insertToTable(String namespace, String key, InputStream fileContainingSchema) {
-    MDC.put(LoggerConstants.SERVICE_NAME,
-        LoggerServiceName.Insert_To_ApplicationConfig_Table.toString());
     String value = new String(FileUtils.toByteArray(fileContainingSchema));
-
     applicationConfigManager.insertIntoTable(namespace, key, value);
     return Response.ok().build();
   }
 
   @Override
   public Response getFromTable(String namespace, String key) {
-    MDC.put(LoggerConstants.SERVICE_NAME,
-        LoggerServiceName.Get_From_ApplicationConfig_Table.toString());
     ConfigurationData value = applicationConfigManager.getFromTable(namespace, key);
     ConfigurationDataDto valueDto = new MapConfigurationDataToConfigurationDataDto()
         .applyMapping(value, ConfigurationDataDto.class);
@@ -75,8 +67,6 @@ public class ApplicationConfigurationImpl implements ApplicationConfiguration {
 
   @Override
   public Response getListOfConfigurationByNamespaceFromTable(String namespace) {
-    MDC.put(LoggerConstants.SERVICE_NAME, LoggerServiceName
-        .Get_List_From_ApplicationConfig_Table_By_Namespace.toString());
     Collection<ApplicationConfigEntity> applicationConfigEntities =
         applicationConfigManager.getListOfConfigurationByNamespace(namespace);
     GenericCollectionWrapper<ApplicationConfigDto> applicationConfigWrapper =
diff --git a/openecomp-be/api/openecomp-sdc-rest-webapp/validation-rest/validation-rest-services/src/main/java/org/openecomp/sdcrests/validation/rest/services/ValidationImpl.java b/openecomp-be/api/openecomp-sdc-rest-webapp/validation-rest/validation-rest-services/src/main/java/org/openecomp/sdcrests/validation/rest/services/ValidationImpl.java
index 3a17aafda3..559adca4f4 100644
--- a/openecomp-be/api/openecomp-sdc-rest-webapp/validation-rest/validation-rest-services/src/main/java/org/openecomp/sdcrests/validation/rest/services/ValidationImpl.java
+++ b/openecomp-be/api/openecomp-sdc-rest-webapp/validation-rest/validation-rest-services/src/main/java/org/openecomp/sdcrests/validation/rest/services/ValidationImpl.java
@@ -21,18 +21,11 @@
 package org.openecomp.sdcrests.validation.rest.services;
 
 
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerServiceName;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.validation.UploadValidationManager;
 import org.openecomp.sdc.validation.types.ValidationFileResponse;
 import org.openecomp.sdcrests.validation.rest.Validation;
 import org.openecomp.sdcrests.validation.rest.mapping.MapValidationFileResponseToValidationFileResponseDto;
 import org.openecomp.sdcrests.validation.types.ValidationFileResponseDto;
-import org.slf4j.MDC;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Service;
@@ -51,9 +44,7 @@ public class ValidationImpl implements Validation {
 
   @Override
   public Response validateFile(String type, InputStream fileToValidate) {
-    MDC.put(LoggerConstants.SERVICE_NAME,
-        LoggerServiceName.Validate.toString());
-    ValidationFileResponse validationFileResponse = null;
+    ValidationFileResponse validationFileResponse;
     try {
       validationFileResponse = uploadValidationManager.validateFile(type, fileToValidate);
     } catch (IOException exception) {
diff --git a/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-license-rest/vendor-license-rest-services/src/main/java/org/openecomp/sdcrests/vendorlicense/rest/mapping/MapLimitRequestDtoToLimitEntity.java b/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-license-rest/vendor-license-rest-services/src/main/java/org/openecomp/sdcrests/vendorlicense/rest/mapping/MapLimitRequestDtoToLimitEntity.java
index f575145887..8fd1b72939 100644
--- a/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-license-rest/vendor-license-rest-services/src/main/java/org/openecomp/sdcrests/vendorlicense/rest/mapping/MapLimitRequestDtoToLimitEntity.java
+++ b/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-license-rest/vendor-license-rest-services/src/main/java/org/openecomp/sdcrests/vendorlicense/rest/mapping/MapLimitRequestDtoToLimitEntity.java
@@ -2,11 +2,8 @@ package org.openecomp.sdcrests.vendorlicense.rest.mapping;
 
 import org.openecomp.sdc.common.errors.CoreException;
 import org.openecomp.sdc.common.errors.ErrorCode;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerServiceName;
 import org.openecomp.sdc.vendorlicense.dao.types.AggregationFunction;
 import org.openecomp.sdc.vendorlicense.dao.types.LimitEntity;
 import org.openecomp.sdc.vendorlicense.dao.types.LimitType;
diff --git a/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-software-products-rest/vendor-software-products-rest-services/src/main/java/org/openecomp/sdcrests/vsp/rest/mapping/MapComponentDependencyModelRequestToEntity.java b/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-software-products-rest/vendor-software-products-rest-services/src/main/java/org/openecomp/sdcrests/vsp/rest/mapping/MapComponentDependencyModelRequestToEntity.java
index d1027ce75e..b0e0bbbfef 100644
--- a/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-software-products-rest/vendor-software-products-rest-services/src/main/java/org/openecomp/sdcrests/vsp/rest/mapping/MapComponentDependencyModelRequestToEntity.java
+++ b/openecomp-be/api/openecomp-sdc-rest-webapp/vendor-software-products-rest/vendor-software-products-rest-services/src/main/java/org/openecomp/sdcrests/vsp/rest/mapping/MapComponentDependencyModelRequestToEntity.java
@@ -3,11 +3,8 @@ package org.openecomp.sdcrests.vsp.rest.mapping;
 
 import org.openecomp.sdc.common.errors.CoreException;
 import org.openecomp.sdc.common.errors.ErrorCode;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.vendorsoftwareproduct.dao.type.ComponentDependencyModelEntity;
 import org.openecomp.sdc.vendorsoftwareproduct.errors.ComponentDependencyModelErrorBuilder;
 import org.openecomp.sdcrests.mapping.MappingBase;
diff --git a/openecomp-be/backend/openecomp-sdc-application-config-manager/src/main/java/org/openecomp/sdc/applicationconfig/impl/ApplicationConfigManagerImpl.java b/openecomp-be/backend/openecomp-sdc-application-config-manager/src/main/java/org/openecomp/sdc/applicationconfig/impl/ApplicationConfigManagerImpl.java
index 777739983d..50b0100522 100644
--- a/openecomp-be/backend/openecomp-sdc-application-config-manager/src/main/java/org/openecomp/sdc/applicationconfig/impl/ApplicationConfigManagerImpl.java
+++ b/openecomp-be/backend/openecomp-sdc-application-config-manager/src/main/java/org/openecomp/sdc/applicationconfig/impl/ApplicationConfigManagerImpl.java
@@ -28,13 +28,8 @@ import org.openecomp.sdc.applicationconfig.ApplicationConfigManager;
 import org.openecomp.sdc.common.errors.CoreException;
 import org.openecomp.sdc.common.errors.ErrorCategory;
 import org.openecomp.sdc.common.errors.ErrorCode;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 
 import java.util.Collection;
 
@@ -43,7 +38,7 @@ import java.util.Collection;
  */
 public class ApplicationConfigManagerImpl implements ApplicationConfigManager {
 
-  private final Logger log = (Logger) LoggerFactory.getLogger(this.getClass().getName());
+  private final Logger log = LoggerFactory.getLogger(this.getClass().getName());
 
   private static final String SCHEMA_GENERATOR_INITIALIZATION_ERROR =
       "SCHEMA_GENERATOR_INITIALIZATION_ERROR";
diff --git a/openecomp-be/backend/openecomp-sdc-validation-manager/src/main/java/org/openecomp/sdc/validation/impl/UploadValidationManagerImpl.java b/openecomp-be/backend/openecomp-sdc-validation-manager/src/main/java/org/openecomp/sdc/validation/impl/UploadValidationManagerImpl.java
index ac2d912e24..42c77b96d8 100644
--- a/openecomp-be/backend/openecomp-sdc-validation-manager/src/main/java/org/openecomp/sdc/validation/impl/UploadValidationManagerImpl.java
+++ b/openecomp-be/backend/openecomp-sdc-validation-manager/src/main/java/org/openecomp/sdc/validation/impl/UploadValidationManagerImpl.java
@@ -30,19 +30,13 @@ import org.openecomp.sdc.common.errors.ErrorCategory;
 import org.openecomp.sdc.common.errors.ErrorCode;
 import org.openecomp.sdc.common.errors.Messages;
 import org.openecomp.sdc.common.utils.SdcCommon;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.datatypes.error.ErrorMessage;
 import org.openecomp.sdc.heat.datatypes.structure.ValidationStructureList;
 import org.openecomp.sdc.heat.services.tree.HeatTreeManager;
 import org.openecomp.sdc.heat.services.tree.HeatTreeManagerUtil;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.validation.UploadValidationManager;
 import org.openecomp.sdc.validation.types.ValidationFileResponse;
 import org.openecomp.sdc.validation.util.ValidationManagerUtil;
-import org.slf4j.MDC;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -94,7 +88,6 @@ public class UploadValidationManagerImpl implements UploadValidationManager {
     }
 
     if (CollectionUtils.isNotEmpty(folderList)) {
-      MDC.put(LoggerConstants.ERROR_DESCRIPTION, LoggerErrorDescription.INVALID_ZIP);
       throw new CoreException((new ErrorCode.ErrorCodeBuilder())
           .withMessage(Messages.ZIP_SHOULD_NOT_CONTAIN_FOLDERS.getErrorMessage())
           .withId(Messages.ZIP_SHOULD_NOT_CONTAIN_FOLDERS.getErrorMessage())
@@ -125,7 +118,7 @@ public class UploadValidationManagerImpl implements UploadValidationManager {
 
     HeatTreeManager tree;
     ValidationStructureList validationStructureList = new ValidationStructureList();
-    if (type.toLowerCase().equals("heat")) {
+    if (type.equalsIgnoreCase("heat")) {
       FileContentHandler content = getFileContent(fileToValidate);
       if (!content.containsFile(SdcCommon.MANIFEST_NAME)) {
         throw new CoreException((new ErrorCode.ErrorCodeBuilder())
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-license-manager/src/main/java/org/openecomp/sdc/vendorlicense/impl/VendorLicenseManagerImpl.java b/openecomp-be/backend/openecomp-sdc-vendor-license-manager/src/main/java/org/openecomp/sdc/vendorlicense/impl/VendorLicenseManagerImpl.java
index dface94dfc..5553b784f6 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-license-manager/src/main/java/org/openecomp/sdc/vendorlicense/impl/VendorLicenseManagerImpl.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-license-manager/src/main/java/org/openecomp/sdc/vendorlicense/impl/VendorLicenseManagerImpl.java
@@ -21,12 +21,6 @@ import org.openecomp.core.util.UniqueValueUtil;
 import org.openecomp.core.utilities.CommonMethods;
 import org.openecomp.sdc.common.errors.CoreException;
 import org.openecomp.sdc.common.errors.ErrorCode;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerServiceName;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.vendorlicense.VendorLicenseConstants;
 import org.openecomp.sdc.vendorlicense.VendorLicenseManager;
 import org.openecomp.sdc.vendorlicense.dao.EntitlementPoolDao;
@@ -65,12 +59,6 @@ public class VendorLicenseManagerImpl implements VendorLicenseManager {
   private EntitlementPoolDao entitlementPoolDao;
   private LicenseKeyGroupDao licenseKeyGroupDao;
   private LimitDao limitDao;
-  private static final String VLM_ID = "VLM id";
-  private static final String EP_LKGID = "EP/LKGId";
-  private static final String VLM_ID_LKG_ID = "VLM id, LKG id";
-  private static final String VLM_ID_LA_ID = "VLM id, LA id";
-  private static final String VLM_ID_FG_ID = "VLM id, FG id";
-  private static final String VLM_ID_EP_ID = "VLM id, EP id";
   private static final String EP_POOL_START_TIME = "T00:00:00Z";
   private static final String EP_POOL_EXPIRY_TIME = "T23:59:59Z";
   private static final  DateTimeFormatter FORMATTER
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/utils/VendorSoftwareProductUtils.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/utils/VendorSoftwareProductUtils.java
index 44bca4032e..2964b72f5d 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/utils/VendorSoftwareProductUtils.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/utils/VendorSoftwareProductUtils.java
@@ -27,11 +27,8 @@ import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.datatypes.error.ErrorMessage;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
 import org.openecomp.sdc.vendorsoftwareproduct.dao.type.ComponentMonitoringUploadEntity;
 import org.openecomp.sdc.vendorsoftwareproduct.types.OrchestrationTemplateActionResponse;
-import org.slf4j.MDC;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -72,7 +69,6 @@ public class VendorSoftwareProductUtils {
    */
   public static void validateContentZipData(FileContentHandler contentMap,
                                             Map<String, List<ErrorMessage>> errors) {
-    MDC.put(LoggerConstants.ERROR_DESCRIPTION, LoggerErrorDescription.INVALID_ZIP);
     if (contentMap.getFileList().isEmpty()) {
       ErrorMessage.ErrorMessageUtil.addMessage(SdcCommon.UPLOAD_FILE, errors)
           .add(new ErrorMessage(ErrorLevel.ERROR, Messages.INVALID_ZIP_FILE.getErrorMessage()));
diff --git a/openecomp-be/lib/openecomp-common-lib/src/main/java/org/openecomp/sdc/common/utils/CommonUtil.java b/openecomp-be/lib/openecomp-common-lib/src/main/java/org/openecomp/sdc/common/utils/CommonUtil.java
index 72485d7162..25c89e1270 100644
--- a/openecomp-be/lib/openecomp-common-lib/src/main/java/org/openecomp/sdc/common/utils/CommonUtil.java
+++ b/openecomp-be/lib/openecomp-common-lib/src/main/java/org/openecomp/sdc/common/utils/CommonUtil.java
@@ -31,9 +31,6 @@ import org.openecomp.sdc.common.errors.CoreException;
 import org.openecomp.sdc.common.errors.ErrorCategory;
 import org.openecomp.sdc.common.errors.ErrorCode;
 import org.openecomp.sdc.common.errors.Messages;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.slf4j.MDC;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
@@ -49,6 +46,10 @@ import java.util.zip.ZipInputStream;
 
 public class CommonUtil {
 
+  private CommonUtil() {
+    // prevent instantiation
+  }
+
   public static FileContentHandler validateAndUploadFileContent(OnboardingTypesEnum type,
                                                                 byte[] uploadedFileData)
       throws IOException {
@@ -113,7 +114,6 @@ public class CommonUtil {
 
   private static void validateNoFolders(List<String> folderList) {
     if (CollectionUtils.isNotEmpty(folderList)) {
-      MDC.put(LoggerConstants.ERROR_DESCRIPTION, LoggerErrorDescription.INVALID_ZIP);
       throw new CoreException((new ErrorCode.ErrorCodeBuilder())
           .withMessage(Messages.ZIP_SHOULD_NOT_CONTAIN_FOLDERS.getErrorMessage())
           .withId(Messages.ZIP_SHOULD_NOT_CONTAIN_FOLDERS.getErrorMessage())
@@ -151,6 +151,6 @@ public class CommonUtil {
 
   public static boolean isFileOriginFromZip(String fileOrigin){
    return Objects.nonNull(fileOrigin)
-        && fileOrigin.toLowerCase().equals(OnboardingTypesEnum.ZIP.toString());
+        && fileOrigin.equalsIgnoreCase(OnboardingTypesEnum.ZIP.toString());
   }
 }
diff --git a/openecomp-be/lib/openecomp-healing-lib/openecomp-sdc-healing-core/src/main/java/org/openecomp/sdc/healing/impl/HealingManagerImpl.java b/openecomp-be/lib/openecomp-healing-lib/openecomp-sdc-healing-core/src/main/java/org/openecomp/sdc/healing/impl/HealingManagerImpl.java
index f737052139..9db9ea44b8 100644
--- a/openecomp-be/lib/openecomp-healing-lib/openecomp-sdc-healing-core/src/main/java/org/openecomp/sdc/healing/impl/HealingManagerImpl.java
+++ b/openecomp-be/lib/openecomp-healing-lib/openecomp-sdc-healing-core/src/main/java/org/openecomp/sdc/healing/impl/HealingManagerImpl.java
@@ -25,17 +25,12 @@ import org.openecomp.core.utilities.file.FileUtils;
 import org.openecomp.core.utilities.json.JsonUtil;
 import org.openecomp.sdc.common.errors.Messages;
 import org.openecomp.sdc.common.session.SessionContextProviderFactory;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.datatypes.model.ItemType;
 import org.openecomp.sdc.healing.api.HealingManager;
 import org.openecomp.sdc.healing.dao.HealingDao;
 import org.openecomp.sdc.healing.interfaces.Healer;
 import org.openecomp.sdc.healing.types.HealCode;
 import org.openecomp.sdc.healing.types.HealerType;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.versioning.VersioningManager;
 import org.openecomp.sdc.versioning.dao.types.Version;
 import org.openecomp.sdc.versioning.dao.types.VersionStatus;
@@ -211,9 +206,7 @@ public class HealingManagerImpl implements HealingManager {
 
   private boolean isPrivateHealingNeededByFlag(String itemId, String version, String user) {
     Optional<Boolean> userHealingFlag = getHealingFlag(itemId, version, user);
-    return userHealingFlag.isPresent()
-        ? userHealingFlag.get()
-        : isPublicHealingNeededByFlag(itemId, version);
+    return userHealingFlag.orElseGet(() -> isPublicHealingNeededByFlag(itemId, version));
   }
 
   private boolean isPublicHealingNeededByFlag(String itemId, String versionId) {
diff --git a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceArtifactEntity.java b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceArtifactEntity.java
index a909e047a2..334e8368e6 100644
--- a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceArtifactEntity.java
+++ b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceArtifactEntity.java
@@ -23,11 +23,6 @@ import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 import com.google.common.io.ByteStreams;
 import org.openecomp.sdc.common.errors.SdcRuntimeException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.versioning.dao.types.Version;
 
 import java.io.IOException;
diff --git a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceTemplateEntity.java b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceTemplateEntity.java
index 2207d3f747..fdbd58bb3b 100644
--- a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceTemplateEntity.java
+++ b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/EnrichedServiceTemplateEntity.java
@@ -23,11 +23,6 @@ import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 import com.google.common.io.ByteStreams;
 import org.openecomp.sdc.common.errors.SdcRuntimeException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.versioning.dao.types.Version;
 
 import java.io.IOException;
diff --git a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceArtifactEntity.java b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceArtifactEntity.java
index 608f4aff0f..6a976e1779 100644
--- a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceArtifactEntity.java
+++ b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceArtifactEntity.java
@@ -23,11 +23,6 @@ import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 import com.google.common.io.ByteStreams;
 import org.openecomp.sdc.common.errors.SdcRuntimeException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.versioning.dao.types.Version;
 
 import java.io.IOException;
diff --git a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceTemplateEntity.java b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceTemplateEntity.java
index 08ecc5d989..ab2280a818 100644
--- a/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceTemplateEntity.java
+++ b/openecomp-be/lib/openecomp-sdc-model-lib/openecomp-sdc-model-api/src/main/java/org/openecomp/core/model/types/ServiceTemplateEntity.java
@@ -23,11 +23,6 @@ import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 import com.google.common.io.ByteStreams;
 import org.openecomp.sdc.common.errors.SdcRuntimeException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.versioning.dao.types.Version;
 
 import java.io.IOException;
diff --git a/openecomp-be/lib/openecomp-sdc-tosca-generator-lib/openecomp-sdc-tosca-generator-core/src/main/java/org/openecomp/sdc/generator/core/utils/GeneratorUtils.java b/openecomp-be/lib/openecomp-sdc-tosca-generator-lib/openecomp-sdc-tosca-generator-core/src/main/java/org/openecomp/sdc/generator/core/utils/GeneratorUtils.java
index 1bd5e0bb0f..168cc1ff30 100644
--- a/openecomp-be/lib/openecomp-sdc-tosca-generator-lib/openecomp-sdc-tosca-generator-core/src/main/java/org/openecomp/sdc/generator/core/utils/GeneratorUtils.java
+++ b/openecomp-be/lib/openecomp-sdc-tosca-generator-lib/openecomp-sdc-tosca-generator-core/src/main/java/org/openecomp/sdc/generator/core/utils/GeneratorUtils.java
@@ -1,9 +1,5 @@
 package org.openecomp.sdc.generator.core.utils;
 
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.datatypes.ToscaElementTypes;
 import org.openecomp.sdc.tosca.datatypes.ToscaServiceModel;
 import org.openecomp.sdc.tosca.datatypes.model.CapabilityDefinition;
@@ -20,6 +16,7 @@ import org.openecomp.sdc.tosca.services.impl.ToscaAnalyzerServiceImpl;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -32,14 +29,13 @@ import static org.openecomp.sdc.tosca.services.DataModelUtil.addSubstitutionNode
  */
 public class GeneratorUtils {
 
-  private static List<String> supportedCapabilities = new ArrayList<>();
-  private static List<String> supportedRequirements = new ArrayList<>();
-  static {
-    //TODO : Read from configuration
-    supportedCapabilities.addAll(Arrays.asList("host", "os", "endpoint", "scalable"));
-    supportedRequirements.addAll(Arrays.asList("link"));
+  private GeneratorUtils() {
+    // prevent instantiation
   }
 
+  //TODO : Read from configuration
+  private static final List<String> SUPPORTED_CAPABILITIES = Arrays.asList("host", "os", "endpoint", "scalable");
+  private static final List<String> SUPPORTED_REQUIREMENTS = Collections.singletonList("link");
 
   /**
    * Add service template to tosca service model.
@@ -123,7 +119,7 @@ public class GeneratorUtils {
           for (Map.Entry<String, RequirementDefinition> requirementDefinitionEntry :
               requirementDefinitionMap.entrySet()) {
             String requirementKey = requirementDefinitionEntry.getKey();
-            if (!supportedRequirements.contains(requirementKey)) {
+            if (!SUPPORTED_REQUIREMENTS.contains(requirementKey)) {
               iterator.remove();
             }
           }
@@ -147,7 +143,7 @@ public class GeneratorUtils {
         Map.Entry<String, CapabilityDefinition> capabilityDefinitionEntry = iterator.next();
         //Expected Capability is of the format <capabilityId>_<componentName>
         String capabilityKey = capabilityDefinitionEntry.getKey().split("_")[0];
-        if (!supportedCapabilities.contains(capabilityKey)) {
+        if (!SUPPORTED_CAPABILITIES.contains(capabilityKey)) {
           iterator.remove();
         }
       }
diff --git a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/util/HeatValidationService.java b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/util/HeatValidationService.java
index 43df8ebb5f..932e60a991 100644
--- a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/util/HeatValidationService.java
+++ b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/util/HeatValidationService.java
@@ -28,8 +28,6 @@ import org.openecomp.sdc.heat.datatypes.model.Parameter;
 import org.openecomp.sdc.heat.datatypes.model.Resource;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
 import org.openecomp.sdc.logging.types.LoggerErrorDescription;
 import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.services.YamlUtil;
@@ -49,7 +47,6 @@ import java.util.Set;
 public class HeatValidationService {
 
   private static final Logger LOGGER = LoggerFactory.getLogger(HeatValidator.class);
-  private static final String NESTED_FILE = "nested file";
   private static final String NO_CONTENT_IN_FILE_MSG = "The file ' %s ' has no content";
   private HeatValidationService(){
 
@@ -268,9 +265,8 @@ public class HeatValidationService {
     Collection<Resource> nestedResources =
             nestedHeatOrchestrationTemplate.getResources() == null ? null
                     : nestedHeatOrchestrationTemplate.getResources().values();
-    boolean isNestedLoopExist = addNestedFilesInLoopAndCheckIfNestedLoopExist(nestedResources,
+    return addNestedFilesInLoopAndCheckIfNestedLoopExist(nestedResources,
                     callingFileName, filesInLoop, globalContext);
-    return isNestedLoopExist;
   }
   private static boolean addNestedFilesInLoopAndCheckIfNestedLoopExist(
                 Collection<Resource> nestedResources,String callingFileName,
diff --git a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/HeatValidator.java b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/HeatValidator.java
index 9d4d48ad3d..4df4c7efae 100644
--- a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/HeatValidator.java
+++ b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/HeatValidator.java
@@ -38,8 +38,6 @@ import org.openecomp.sdc.heat.services.HeatStructureUtil;
 import org.openecomp.sdc.heat.services.manifest.ManifestUtil;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
 import org.openecomp.sdc.logging.types.LoggerErrorDescription;
 import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.services.YamlUtil;
@@ -153,9 +151,8 @@ public class HeatValidator implements Validator {
   private static void extractResourceProperty(String fileName, Set<String> resourcesNames,
                                               GlobalValidationContext globalContext,
                                               Resource value) {
-    Resource resource = value;
-    Collection<Object> resourcePropertiesValues =
-        resource.getProperties() == null ? null : resource.getProperties()
+      Collection<Object> resourcePropertiesValues =
+        value.getProperties() == null ? null : value.getProperties()
             .values();
     if (CollectionUtils.isNotEmpty(resourcePropertiesValues)) {
       for (Object propertyValue : resourcePropertiesValues) {
@@ -417,8 +414,7 @@ public class HeatValidator implements Validator {
                                                                     heatOrchestrationTemplate,
                                                                 GlobalValidationContext
                                                                     globalContext) {
-    Map<String, Parameter> parametersMap = heatOrchestrationTemplate.getParameters() == null ? null
-        : heatOrchestrationTemplate.getParameters();
+    Map<String, Parameter> parametersMap = heatOrchestrationTemplate.getParameters();
 
     if (parametersMap != null && MapUtils.isNotEmpty(parametersMap)) {
       for (Map.Entry<String, Parameter> parameterEntry : parametersMap.entrySet()) {
diff --git a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/ManifestValidator.java b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/ManifestValidator.java
index d35d3cabd8..0b1e37ba06 100644
--- a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/ManifestValidator.java
+++ b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-impl/src/main/java/org/openecomp/sdc/validation/impl/validators/ManifestValidator.java
@@ -27,8 +27,6 @@ import org.openecomp.sdc.heat.datatypes.manifest.FileData;
 import org.openecomp.sdc.heat.datatypes.manifest.ManifestContent;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
 import org.openecomp.sdc.logging.types.LoggerErrorDescription;
 import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.validation.Validator;
diff --git a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-sdk/src/main/java/org/openecomp/sdc/validation/util/ValidationUtil.java b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-sdk/src/main/java/org/openecomp/sdc/validation/util/ValidationUtil.java
index 77e82dc15f..db1d9eac88 100644
--- a/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-sdk/src/main/java/org/openecomp/sdc/validation/util/ValidationUtil.java
+++ b/openecomp-be/lib/openecomp-sdc-validation-lib/openecomp-sdc-validation-sdk/src/main/java/org/openecomp/sdc/validation/util/ValidationUtil.java
@@ -18,8 +18,6 @@ import org.openecomp.sdc.heat.datatypes.model.ResourceReferenceFunctions;
 import org.openecomp.sdc.heat.services.HeatStructureUtil;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
 import org.openecomp.sdc.logging.types.LoggerErrorDescription;
 import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.services.YamlUtil;
diff --git a/openecomp-be/lib/openecomp-sdc-vendor-license-lib/openecomp-sdc-vendor-license-core/src/main/java/org/openecomp/sdc/vendorlicense/licenseartifacts/impl/types/XmlArtifact.java b/openecomp-be/lib/openecomp-sdc-vendor-license-lib/openecomp-sdc-vendor-license-core/src/main/java/org/openecomp/sdc/vendorlicense/licenseartifacts/impl/types/XmlArtifact.java
index d484bf46b9..ec2ebf4173 100644
--- a/openecomp-be/lib/openecomp-sdc-vendor-license-lib/openecomp-sdc-vendor-license-core/src/main/java/org/openecomp/sdc/vendorlicense/licenseartifacts/impl/types/XmlArtifact.java
+++ b/openecomp-be/lib/openecomp-sdc-vendor-license-lib/openecomp-sdc-vendor-license-core/src/main/java/org/openecomp/sdc/vendorlicense/licenseartifacts/impl/types/XmlArtifact.java
@@ -22,20 +22,15 @@ package org.openecomp.sdc.vendorlicense.licenseartifacts.impl.types;
 
 import com.fasterxml.jackson.dataformat.xml.XmlMapper;
 import org.openecomp.sdc.common.errors.CoreException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.vendorlicense.VendorLicenseConstants;
 import org.openecomp.sdc.vendorlicense.errors.JsonErrorBuilder;
 
 public abstract class XmlArtifact {
 
   XmlMapper xmlMapper = new XmlMapper();
-  private final Logger log = (Logger) LoggerFactory.getLogger(this.getClass().getName());
+  private final Logger log = LoggerFactory.getLogger(this.getClass().getName());
 
   abstract void initMapper();
 
@@ -46,14 +41,13 @@ public abstract class XmlArtifact {
    */
   public String toXml() {
     initMapper();
-    String xml = "";
+    String xml;
 
     try {
       xml = xmlMapper.writeValueAsString(this);
     } catch (com.fasterxml.jackson.core.JsonProcessingException exception) {
       log.debug("",exception);
       throw new CoreException(new JsonErrorBuilder(exception.getMessage()).build());
-
     }
 
     return xml.replaceAll(VendorLicenseConstants.VENDOR_LICENSE_MODEL_ARTIFACT_REGEX_REMOVE, "");
diff --git a/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/ManualVspDataCollectionService.java b/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/ManualVspDataCollectionService.java
index 96c56c50e8..086aa8252a 100644
--- a/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/ManualVspDataCollectionService.java
+++ b/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/ManualVspDataCollectionService.java
@@ -3,7 +3,6 @@ package org.openecomp.sdc.vendorsoftwareproduct.services;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang.StringUtils;
 import org.openecomp.core.utilities.json.JsonUtil;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.generator.datatypes.tosca.ComputeFlavor;
 import org.openecomp.sdc.generator.datatypes.tosca.DeploymentFlavorModel;
 import org.openecomp.sdc.generator.datatypes.tosca.LicenseFlavor;
@@ -11,9 +10,6 @@ import org.openecomp.sdc.generator.datatypes.tosca.MultiFlavorVfcImage;
 import org.openecomp.sdc.generator.datatypes.tosca.VendorInfo;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.vendorlicense.dao.types.FeatureGroupEntity;
 import org.openecomp.sdc.vendorlicense.dao.types.FeatureGroupModel;
 import org.openecomp.sdc.vendorlicense.facade.VendorLicenseFacade;
@@ -72,7 +68,7 @@ public class ManualVspDataCollectionService {
   private static final VendorLicenseFacade vendorLicenseFacade =
       VendorLicenseFacadeFactory.getInstance().createInterface();
 
-  private final Logger log = (Logger) LoggerFactory.getLogger(this.getClass().getName());
+  private final Logger log = LoggerFactory.getLogger(this.getClass().getName());
 
   /**
    * Gets vendor name for the vsp.
@@ -299,7 +295,7 @@ public class ManualVspDataCollectionService {
   private Optional<ComputeFlavor> getComputeFlavor(String vspId, Version version,
                                                    String componentId, String computeFlavorId) {
     ComputeFlavor computeFlavor = null;
-    ComputeEntity computeQuestionnaire = null;
+    ComputeEntity computeQuestionnaire;
     try {
       computeQuestionnaire = computeDao.getQuestionnaireData(vspId, version, componentId,
           computeFlavorId);
diff --git a/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/impl/composition/CompositionDataExtractorImpl.java b/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/impl/composition/CompositionDataExtractorImpl.java
index c10a153114..413c9c0adf 100644
--- a/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/impl/composition/CompositionDataExtractorImpl.java
+++ b/openecomp-be/lib/openecomp-sdc-vendor-software-product-lib/openecomp-sdc-vendor-software-product-core/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/services/impl/composition/CompositionDataExtractorImpl.java
@@ -24,13 +24,8 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.collections4.MapUtils;
 import org.openecomp.sdc.common.errors.CoreException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.datatypes.ToscaCapabilityType;
 import org.openecomp.sdc.tosca.datatypes.ToscaFunctions;
 import org.openecomp.sdc.tosca.datatypes.ToscaNodeType;
@@ -314,7 +309,7 @@ public class CompositionDataExtractorImpl implements CompositionDataExtractor {
     List<ServiceTemplate> toscaServiceTemplates = toscaServiceModel.getServiceTemplates().entrySet()
         .stream()
         .filter(map -> map.getKey().equals(mainTemplate))
-        .map(map -> map.getValue())
+        .map(Map.Entry::getValue)
         .collect(Collectors.toList());
     ServiceTemplate serviceTemplate = toscaServiceTemplates.get(0);
 
@@ -420,7 +415,7 @@ public class CompositionDataExtractorImpl implements CompositionDataExtractor {
       network.setName(networkId);
       Optional<Boolean> networkDhcpValue =
           getNetworkDhcpValue(serviceTemplate, networkNodeTemplates.get(networkId));
-      network.setDhcp(networkDhcpValue.isPresent() ? networkDhcpValue.get() : true);
+      network.setDhcp(networkDhcpValue.orElse(true));
       networks.add(network);
     }
     return networks;
diff --git a/openecomp-be/lib/openecomp-sdc-versioning-lib/openecomp-sdc-versioning-api/src/main/java/org/openecomp/sdc/versioning/VersioningUtil.java b/openecomp-be/lib/openecomp-sdc-versioning-lib/openecomp-sdc-versioning-api/src/main/java/org/openecomp/sdc/versioning/VersioningUtil.java
index c4479d7105..7411edec08 100644
--- a/openecomp-be/lib/openecomp-sdc-versioning-lib/openecomp-sdc-versioning-api/src/main/java/org/openecomp/sdc/versioning/VersioningUtil.java
+++ b/openecomp-be/lib/openecomp-sdc-versioning-lib/openecomp-sdc-versioning-api/src/main/java/org/openecomp/sdc/versioning/VersioningUtil.java
@@ -39,6 +39,10 @@ import java.util.stream.Collectors;
  */
 public class VersioningUtil {
 
+  private VersioningUtil() {
+    // prevent instantiation
+  }
+
   /**
    * Validate entity existence.
    *
@@ -51,10 +55,6 @@ public class VersioningUtil {
                                                                            T inputEntity,
                                                                            String firstClassCitizenType) {
     if (retrievedEntity == null) {
-      //MdcDataErrorMessage.createErrorMessageAndUpdateMDC(LoggerServiceName
-      // .getServiceName(LoggerServiceName.Submit_Entity),
-      // LoggerConstants.TARGET_ENTITY_DB, LoggerTragetServiceName.SUBMIT_ENTITY,
-      // ErrorLevel.ERROR.name(), null, LoggerErrorDescription.SUBMIT_ENTITY);
       throw new CoreException(new VersionableSubEntityNotFoundErrorBuilder(
           inputEntity.getEntityType(),
           inputEntity.getId(),
@@ -88,11 +88,7 @@ public class VersioningUtil {
       }
     }
 
-    if (nonExistingIds.size() > 0) {
-      //MdcDataErrorMessage.createErrorMessageAndUpdateMDC
-      // (LoggerServiceName.getServiceName(LoggerServiceName.Submit_Entity),
-      // LoggerConstants.TARGET_ENTITY_DB, LoggerTragetServiceName.SUBMIT_ENTITY,
-      // ErrorLevel.ERROR.name(), null, LoggerErrorDescription.SUBMIT_ENTITY);
+    if (!nonExistingIds.isEmpty()) {
       if (nonExistingIds.size() == 1) {
         throw new CoreException(new VersionableSubEntityNotFoundErrorBuilder(
             entity.getEntityType(),
@@ -130,12 +126,8 @@ public class VersioningUtil {
         .filter(entityId -> !retrievedContainedEntityIds.contains(entityId))
         .collect(Collectors.toList());
 
-    if (nonExistingIds.size() > 0) {
+    if (!nonExistingIds.isEmpty()) {
       if (nonExistingIds.size() == 1) {
-        //MdcDataErrorMessage.createErrorMessageAndUpdateMDC(LoggerServiceName
-        // .getServiceName(LoggerServiceName.Submit_Entity), LoggerConstants.TARGET_ENTITY_DB,
-        // LoggerTragetServiceName.ENTIT, ErrorLevel.ERROR.name(),
-        // null, LoggerErrorDescription.SUBMIT_ENTITY);
         throw new CoreException(new VersionableSubEntityNotFoundErrorBuilder(
             containedEntityType,
             nonExistingIds.get(0),
@@ -143,10 +135,6 @@ public class VersioningUtil {
             containingEntity.getId(),
             containingEntity.getVersion()).build());
       }
-      //MdcDataErrorMessage.createErrorMessageAndUpdateMDC(LoggerServiceName
-      // .getServiceName(LoggerServiceName.Submit_Entity),
-      // LoggerConstants.TARGET_ENTITY_DB, LoggerTragetServiceName.SUBMIT_ENTITY,
-      // ErrorLevel.ERROR.name(), null, LoggerErrorDescription.SUBMIT_ENTITY);
       throw new CoreException(new VersionableSubEntityNotFoundErrorBuilder(
           containedEntityType,
           nonExistingIds,
diff --git a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/DataModelUtil.java b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/DataModelUtil.java
index ed28eda06b..fd89faeb85 100644
--- a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/DataModelUtil.java
+++ b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/DataModelUtil.java
@@ -24,13 +24,8 @@ import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.collections4.MapUtils;
 import org.openecomp.core.utilities.CommonMethods;
 import org.openecomp.sdc.common.errors.CoreException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.datatypes.ToscaCapabilityType;
 import org.openecomp.sdc.tosca.datatypes.ToscaFunctions;
 import org.openecomp.sdc.tosca.datatypes.ToscaRelationshipType;
@@ -78,6 +73,10 @@ import java.util.Optional;
  */
 public class DataModelUtil {
 
+  private DataModelUtil() {
+    // prevent instantiation
+  }
+
   /**
    * Add substitution mapping.
    */
diff --git a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaAnalyzerServiceImpl.java b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaAnalyzerServiceImpl.java
index 6d9d16fadc..9d9e4a42fd 100644
--- a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaAnalyzerServiceImpl.java
+++ b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaAnalyzerServiceImpl.java
@@ -21,11 +21,6 @@ import org.apache.commons.collections4.MapUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openecomp.core.utilities.CommonMethods;
 import org.openecomp.sdc.common.errors.CoreException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.datatypes.ToscaElementTypes;
 import org.openecomp.sdc.tosca.datatypes.ToscaNodeType;
 import org.openecomp.sdc.tosca.datatypes.ToscaServiceModel;
@@ -226,13 +221,10 @@ public class ToscaAnalyzerServiceImpl implements ToscaAnalyzerService {
   public Optional<NodeType> fetchNodeType(String nodeTypeKey, Collection<ServiceTemplate>
       serviceTemplates) {
     Optional<Map<String, NodeType>> nodeTypeMap = serviceTemplates.stream()
-        .map(st -> st.getNode_types())
+        .map(ServiceTemplate::getNode_types)
         .filter(nodeTypes -> Objects.nonNull(nodeTypes) && nodeTypes.containsKey(nodeTypeKey))
         .findFirst();
-    if (nodeTypeMap.isPresent()) {
-      return Optional.ofNullable(nodeTypeMap.get().get(nodeTypeKey));
-    }
-    return Optional.empty();
+    return nodeTypeMap.map(stringNodeTypeMap -> stringNodeTypeMap.get(nodeTypeKey));
   }
 
   @Override
diff --git a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaFileOutputServiceCsarImpl.java b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaFileOutputServiceCsarImpl.java
index f0a12e6c10..eaf1e20227 100644
--- a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaFileOutputServiceCsarImpl.java
+++ b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/services/impl/ToscaFileOutputServiceCsarImpl.java
@@ -20,13 +20,8 @@ import org.apache.commons.io.IOUtils;
 import org.openecomp.core.utilities.file.FileContentHandler;
 import org.openecomp.core.utilities.file.FileUtils;
 import org.openecomp.sdc.common.errors.CoreException;
-import org.openecomp.sdc.datatypes.error.ErrorLevel;
 import org.openecomp.sdc.logging.api.Logger;
 import org.openecomp.sdc.logging.api.LoggerFactory;
-import org.openecomp.sdc.logging.types.LoggerConstants;
-import org.openecomp.sdc.logging.types.LoggerErrorCode;
-import org.openecomp.sdc.logging.types.LoggerErrorDescription;
-import org.openecomp.sdc.logging.types.LoggerTragetServiceName;
 import org.openecomp.sdc.tosca.datatypes.ToscaServiceModel;
 import org.openecomp.sdc.tosca.datatypes.model.ServiceTemplate;
 import org.openecomp.sdc.tosca.exceptions.CsarCreationErrorBuilder;