Replace gson mapper with jackson mapper

We introduced JsonObjectMapper (wapper) as Spring component.

Issue-ID: CPS-751

Change-Id: I536b0771a3a263325e6907717baf6941d70c0d6c
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>

10 files changed, 84 insertions, 103 deletions

diff --git a/cps-ncmp-service/pom.xml b/cps-ncmp-service/pom.xml
index b70279303e..871bd14c58 100644
--- a/cps-ncmp-service/pom.xml
+++ b/cps-ncmp-service/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
   ============LICENSE_START=======================================================
-  Copyright (C) 2021 Nordix Foundation
+  Copyright (C) 2021-2022 Nordix Foundation
   Modifications Copyright (C) 2021 Pantheon.tech
   ================================================================================
   Licensed under the Apache License, Version 2.0 (the "License");
@@ -66,5 +66,9 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-validation</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+        </dependency>
     </dependencies>
 </project>
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
index 240d6b5ca9..82145efc3d 100755
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
@@ -27,13 +27,13 @@ import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum
 import static org.onap.cps.spi.CascadeDeleteAllowed.CASCADE_DELETE_ALLOWED;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import java.time.OffsetDateTime;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.api.CpsAdminService;
 import org.onap.cps.api.CpsDataService;
@@ -50,11 +50,13 @@ import org.onap.cps.ncmp.api.models.PersistenceCmHandlesList;
 import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
 import org.onap.cps.spi.exceptions.DataValidationException;
 import org.onap.cps.spi.model.ModuleReference;
+import org.onap.cps.utils.JsonObjectMapper;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 
 @Slf4j
 @Service
+@RequiredArgsConstructor
 public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService {
 
     private static final String NFP_OPERATIONAL_DATASTORE_DATASPACE_NAME = "NFP-Operational";
@@ -65,37 +67,17 @@ public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService
 
     private static final OffsetDateTime NO_TIMESTAMP = null;
 
-    private CpsDataService cpsDataService;
+    private final CpsDataService cpsDataService;
 
-    private ObjectMapper objectMapper;
+    private final JsonObjectMapper jsonObjectMapper;
 
-    private DmiDataOperations dmiDataOperations;
+    private final DmiDataOperations dmiDataOperations;
 
-    private DmiModelOperations dmiModelOperations;
+    private final DmiModelOperations dmiModelOperations;
 
-    private CpsModuleService cpsModuleService;
+    private final CpsModuleService cpsModuleService;
 
-    private CpsAdminService cpsAdminService;
-
-    /**
-     * Constructor Injection for Dependencies.
-     * @param dmiDataOperations DMI operation
-     * @param cpsDataService Data Service Interface
-     * @param objectMapper Object Mapper
-     */
-    public NetworkCmProxyDataServiceImpl(final DmiDataOperations dmiDataOperations,
-                                         final DmiModelOperations dmiModelOperations,
-                                         final CpsModuleService cpsModuleService,
-                                         final CpsDataService cpsDataService,
-                                         final CpsAdminService cpsAdminService,
-                                         final ObjectMapper objectMapper) {
-        this.dmiDataOperations = dmiDataOperations;
-        this.dmiModelOperations = dmiModelOperations;
-        this.cpsModuleService = cpsModuleService;
-        this.cpsDataService = cpsDataService;
-        this.cpsAdminService = cpsAdminService;
-        this.objectMapper = objectMapper;
-    }
+    private final CpsAdminService cpsAdminService;
 
     @Override
     public void updateDmiRegistrationAndSyncModule(final DmiPluginRegistration dmiPluginRegistration) {
@@ -198,7 +180,7 @@ public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService
         throws JsonProcessingException {
         final PersistenceCmHandlesList updatedPersistenceCmHandlesList =
             getUpdatedPersistenceCmHandlesList(dmiPluginRegistration, dmiPluginRegistration.getUpdatedCmHandles());
-        final String cmHandlesAsJson = objectMapper.writeValueAsString(updatedPersistenceCmHandlesList);
+        final String cmHandlesAsJson = jsonObjectMapper.asJsonString(updatedPersistenceCmHandlesList);
         cpsDataService.updateNodeLeavesAndExistingDescendantLeaves(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
                 "/dmi-registry", cmHandlesAsJson, NO_TIMESTAMP);
     }
@@ -223,7 +205,7 @@ public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService
 
     private void registerAndSyncNewCmHandles(final PersistenceCmHandlesList persistenceCmHandlesList)
         throws JsonProcessingException  {
-        final String cmHandleJsonData = objectMapper.writeValueAsString(persistenceCmHandlesList);
+        final String cmHandleJsonData = jsonObjectMapper.asJsonString(persistenceCmHandlesList);
         cpsDataService.saveListElements(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR, "/dmi-registry",
             cmHandleJsonData, NO_TIMESTAMP);
 
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiDataOperations.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiDataOperations.java
index 095f677ef8..3bfb424a2e 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiDataOperations.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiDataOperations.java
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -25,10 +25,10 @@ import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.READ;
 import static org.onap.cps.ncmp.api.impl.operations.RequiredDmiService.DATA;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.onap.cps.ncmp.api.impl.client.DmiRestClient;
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration;
 import org.onap.cps.ncmp.api.models.PersistenceCmHandle;
+import org.onap.cps.utils.JsonObjectMapper;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Component;
@@ -45,10 +45,10 @@ public class DmiDataOperations extends DmiOperations {
      * @param dmiRestClient {@code DmiRestClient}
      */
     public DmiDataOperations(final PersistenceCmHandleRetriever cmHandlePropertiesRetriever,
-                             final ObjectMapper objectMapper,
+                             final JsonObjectMapper jsonObjectMapper,
                              final NcmpConfiguration.DmiProperties dmiProperties,
                              final DmiRestClient dmiRestClient) {
-        super(cmHandlePropertiesRetriever, objectMapper, dmiProperties, dmiRestClient);
+        super(cmHandlePropertiesRetriever, jsonObjectMapper, dmiProperties, dmiRestClient);
     }
 
     /**
@@ -73,7 +73,7 @@ public class DmiDataOperations extends DmiOperations {
             .operation(READ)
             .build();
         dmiRequestBody.asCmHandleProperties(persistenceCmHandle.getAdditionalProperties());
-        final String jsonBody = getDmiRequestBodyAsString(dmiRequestBody);
+        final String jsonBody = jsonObjectMapper.asJsonString(dmiRequestBody);
 
         final var dmiResourceDataUrl = getDmiDatastoreUrlWithOptions(
             persistenceCmHandle.resolveDmiServiceName(DATA), cmHandle, resourceId,
@@ -106,7 +106,7 @@ public class DmiDataOperations extends DmiOperations {
             .dataType(dataType)
             .build();
         dmiRequestBody.asCmHandleProperties(persistenceCmHandle.getAdditionalProperties());
-        final String jsonBody = getDmiRequestBodyAsString(dmiRequestBody);
+        final String jsonBody = jsonObjectMapper.asJsonString(dmiRequestBody);
         final String dmiUrl =
             getResourceInDataStoreUrl(persistenceCmHandle.resolveDmiServiceName(DATA),
             cmHandle, resourceId, PASSTHROUGH_RUNNING);
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiModelOperations.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiModelOperations.java
index 20a3309d01..1ce6dcfcd5 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiModelOperations.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiModelOperations.java
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -22,7 +22,6 @@ package org.onap.cps.ncmp.api.impl.operations;
 
 import static org.onap.cps.ncmp.api.impl.operations.RequiredDmiService.MODEL;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import java.util.ArrayList;
@@ -34,10 +33,14 @@ import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration;
 import org.onap.cps.ncmp.api.models.PersistenceCmHandle;
 import org.onap.cps.ncmp.api.models.YangResource;
 import org.onap.cps.spi.model.ModuleReference;
+import org.onap.cps.utils.JsonObjectMapper;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Component;
 
+/**
+ * Operations class for DMI Model.
+ */
 @Component
 public class DmiModelOperations extends DmiOperations {
 
@@ -47,10 +50,10 @@ public class DmiModelOperations extends DmiOperations {
      * @param dmiRestClient {@code DmiRestClient}
      */
     public DmiModelOperations(final PersistenceCmHandleRetriever cmHandlePropertiesRetriever,
-                              final ObjectMapper objectMapper,
+                              final JsonObjectMapper jsonObjectMapper,
                               final NcmpConfiguration.DmiProperties dmiProperties,
                               final DmiRestClient dmiRestClient) {
-        super(cmHandlePropertiesRetriever, objectMapper, dmiProperties, dmiRestClient);
+        super(cmHandlePropertiesRetriever, jsonObjectMapper, dmiProperties, dmiRestClient);
     }
 
     /**
@@ -65,7 +68,7 @@ public class DmiModelOperations extends DmiOperations {
         dmiRequestBody.asCmHandleProperties(persistenceCmHandle.getAdditionalProperties());
         final ResponseEntity<Object> dmiFetchModulesResponseEntity = getResourceFromDmiWithJsonData(
             persistenceCmHandle.resolveDmiServiceName(MODEL),
-            getDmiRequestBodyAsString(dmiRequestBody), persistenceCmHandle.getId(), "modules");
+                jsonObjectMapper.asJsonString(dmiRequestBody), persistenceCmHandle.getId(), "modules");
         return toModuleReferences((Map) dmiFetchModulesResponseEntity.getBody());
     }
 
@@ -144,7 +147,7 @@ public class DmiModelOperations extends DmiOperations {
             if (moduleReferencesAsList != null) {
                 moduleReferencesAsList.forEach(moduleReferenceAsMap -> {
                     final ModuleReference moduleReference =
-                        objectMapper.convertValue(moduleReferenceAsMap, ModuleReference.class);
+                            jsonObjectMapper.convertToValueType(moduleReferenceAsMap, ModuleReference.class);
                     moduleReferences.add(moduleReference);
                 });
             }
@@ -159,7 +162,7 @@ public class DmiModelOperations extends DmiOperations {
         if (yangResourcesAsList != null) {
             yangResourcesAsList.forEach(yangResourceAsMap -> {
                 final YangResource yangResource =
-                    objectMapper.convertValue(yangResourceAsMap, YangResource.class);
+                        jsonObjectMapper.convertToValueType(yangResourceAsMap, YangResource.class);
                 yangResourcesModuleNameToContentMap.put(yangResource.getModuleName(),
                     yangResource.getYangSource());
             });
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiOperations.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiOperations.java
index 509728061e..2f7376e87c 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiOperations.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/operations/DmiOperations.java
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -20,17 +20,19 @@
 
 package org.onap.cps.ncmp.api.impl.operations;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.base.Strings;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.ncmp.api.impl.client.DmiRestClient;
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration;
-import org.onap.cps.ncmp.api.impl.exception.NcmpException;
+import org.onap.cps.utils.JsonObjectMapper;
 import org.springframework.http.HttpHeaders;
+import org.springframework.stereotype.Service;
 
 @Slf4j
+@RequiredArgsConstructor
+@Service
 public class DmiOperations {
 
     @Getter
@@ -44,28 +46,13 @@ public class DmiOperations {
         }
     }
 
-    protected ObjectMapper objectMapper;
-    protected PersistenceCmHandleRetriever cmHandlePropertiesRetriever;
-    protected DmiRestClient dmiRestClient;
-    protected NcmpConfiguration.DmiProperties dmiProperties;
+    protected final PersistenceCmHandleRetriever cmHandlePropertiesRetriever;
+    protected final JsonObjectMapper jsonObjectMapper;
+    protected final NcmpConfiguration.DmiProperties dmiProperties;
+    protected final DmiRestClient dmiRestClient;
 
     static final String URL_SEPARATOR = "/";
 
-    /**
-     * Constructor for {@code DmiOperations}. This method also manipulates url properties.
-     *
-     * @param dmiRestClient {@code DmiRestClient}
-     */
-    public DmiOperations(final PersistenceCmHandleRetriever cmHandlePropertiesRetriever,
-                         final ObjectMapper objectMapper,
-                         final NcmpConfiguration.DmiProperties dmiProperties,
-                         final DmiRestClient dmiRestClient) {
-        this.cmHandlePropertiesRetriever = cmHandlePropertiesRetriever;
-        this.objectMapper = objectMapper;
-        this.dmiRestClient = dmiRestClient;
-        this.dmiProperties = dmiProperties;
-    }
-
     String getCmHandleUrl(final String dmiServiceName, final String cmHandle) {
         return dmiServiceName
             + dmiProperties.getDmiBasePath()
@@ -95,20 +82,4 @@ public class DmiOperations {
         return httpHeaders;
     }
 
-    /**
-     * Convert DmiRequestBody to JSON.
-     *
-     * @param dmiRequestBody the dmi request body
-     * @return DmiRequestBody as JSON
-     */
-    String getDmiRequestBodyAsString(final DmiRequestBody dmiRequestBody) {
-        try {
-            return objectMapper.writeValueAsString(dmiRequestBody);
-        } catch (final JsonProcessingException e) {
-            log.error("Parsing error occurred while converting Object to JSON.");
-            throw new NcmpException("Parsing error occurred while converting given object to JSON.",
-                e.getMessage());
-        }
-    }
-
 }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplModelSyncSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplModelSyncSpec.groovy
index b7f059a7ce..464757158f 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplModelSyncSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplModelSyncSpec.groovy
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -20,22 +20,25 @@
 
 package org.onap.cps.ncmp.api.impl
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import org.onap.cps.api.CpsAdminService
 import org.onap.cps.api.CpsModuleService
+import org.onap.cps.ncmp.api.impl.operations.DmiDataOperations
 import org.onap.cps.ncmp.api.impl.operations.DmiModelOperations
 import org.onap.cps.ncmp.api.models.PersistenceCmHandle
 import org.onap.cps.spi.model.ModuleReference
+import org.onap.cps.utils.JsonObjectMapper
 import spock.lang.Specification
 
 class NetworkCmProxyDataServiceImplModelSyncSpec extends Specification {
 
+    def mockJsonObjectMapper = Mock(JsonObjectMapper)
     def mockCpsModuleService = Mock(CpsModuleService)
     def mockCpsAdminService = Mock(CpsAdminService)
     def mockDmiModelOperations = Mock(DmiModelOperations)
+    def mockDmiDataOperations = Mock(DmiDataOperations)
 
-    def objectUnderTest = new NetworkCmProxyDataServiceImpl(null, mockDmiModelOperations,
-        mockCpsModuleService, null, mockCpsAdminService, new ObjectMapper())
+    def objectUnderTest = new NetworkCmProxyDataServiceImpl(null, mockJsonObjectMapper, mockDmiDataOperations, mockDmiModelOperations,
+            mockCpsModuleService, mockCpsAdminService)
 
     def expectedDataspaceName = 'NFP-Operational'
 
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
index 90fcbfc612..b954b41ef2 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplRegistrationSpec.groovy
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -22,13 +22,17 @@ package org.onap.cps.ncmp.api.impl
 
 import com.fasterxml.jackson.core.JsonProcessingException
 import com.fasterxml.jackson.databind.ObjectMapper
+import org.onap.cps.api.CpsAdminService
 import org.onap.cps.api.CpsDataService
 import org.onap.cps.api.CpsModuleService
 import org.onap.cps.ncmp.api.impl.exception.NcmpException
+import org.onap.cps.ncmp.api.impl.operations.DmiDataOperations
+import org.onap.cps.ncmp.api.impl.operations.DmiModelOperations
 import org.onap.cps.ncmp.api.models.CmHandle
 import org.onap.cps.ncmp.api.models.DmiPluginRegistration
 import org.onap.cps.spi.exceptions.DataNodeNotFoundException
 import org.onap.cps.spi.exceptions.DataValidationException
+import org.onap.cps.utils.JsonObjectMapper
 import spock.lang.Shared
 import spock.lang.Specification
 
@@ -44,7 +48,10 @@ class NetworkCmProxyDataServiceImplRegistrationSpec extends Specification {
 
     def mockCpsDataService = Mock(CpsDataService)
     def mockCpsModuleService = Mock(CpsModuleService)
-    def spyObjectMapper = Spy(ObjectMapper)
+    def spiedJsonObjectMapper = Spy(new JsonObjectMapper(new ObjectMapper()))
+    def mockCpsAdminService = Mock(CpsAdminService)
+    def mockDmiModelOperations = Mock(DmiModelOperations)
+    def mockDmiDataOperations = Mock(DmiDataOperations)
 
     def noTimestamp = null
 
@@ -102,7 +109,7 @@ class NetworkCmProxyDataServiceImplRegistrationSpec extends Specification {
             dmiPluginRegistration.createdCmHandles = createdCmHandles
             dmiPluginRegistration.updatedCmHandles = updatedCmHandles
         and: 'an json processing exception occurs'
-            spyObjectMapper.writeValueAsString(_) >> { throw (new JsonProcessingException('')) }
+            spiedJsonObjectMapper.asJsonString(_) >> { throw (new JsonProcessingException('')) }
         when: 'registration is updated and modules are synced'
             objectUnderTest.updateDmiRegistrationAndSyncModule(dmiPluginRegistration)
         then: 'a data validation exception is thrown'
@@ -182,8 +189,8 @@ class NetworkCmProxyDataServiceImplRegistrationSpec extends Specification {
     }
 
     def getObjectUnderTestWithModelSyncDisabled() {
-        def objectUnderTest = Spy(new NetworkCmProxyDataServiceImpl(null, null, mockCpsModuleService,
-                mockCpsDataService, null, spyObjectMapper))
+        def objectUnderTest = Spy(new NetworkCmProxyDataServiceImpl(mockCpsDataService, spiedJsonObjectMapper, mockDmiDataOperations, mockDmiModelOperations,
+                mockCpsModuleService, mockCpsAdminService))
         objectUnderTest.syncModulesAndCreateAnchor(*_) >> null
         return objectUnderTest
     }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
index 5753d7b675..51af0f55e1 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImplSpec.groovy
@@ -28,6 +28,8 @@ import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.READ
 import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.UPDATE
 
+import org.onap.cps.ncmp.api.impl.operations.DmiModelOperations
+import org.onap.cps.utils.JsonObjectMapper
 import com.fasterxml.jackson.core.JsonProcessingException
 import com.fasterxml.jackson.databind.ObjectMapper
 import org.onap.cps.api.CpsAdminService
@@ -46,11 +48,12 @@ class NetworkCmProxyDataServiceImplSpec extends Specification {
     def mockCpsDataService = Mock(CpsDataService)
     def mockCpsModuleService = Mock(CpsModuleService)
     def mockCpsAdminService = Mock(CpsAdminService)
-    def spyObjectMapper = Spy(ObjectMapper)
+    def spiedJsonObjectMapper = Spy(new JsonObjectMapper(new ObjectMapper()))
+    def mockDmiModelOperations = Mock(DmiModelOperations)
     def mockDmiDataOperations = Mock(DmiDataOperations)
 
-    def objectUnderTest = new NetworkCmProxyDataServiceImpl(mockDmiDataOperations, null,
-        mockCpsModuleService, mockCpsDataService, mockCpsAdminService, spyObjectMapper)
+    def objectUnderTest = new NetworkCmProxyDataServiceImpl(mockCpsDataService, spiedJsonObjectMapper, mockDmiDataOperations, mockDmiModelOperations,
+        mockCpsModuleService, mockCpsAdminService)
 
     def cmHandleXPath = "/dmi-registry/cm-handles[@id='testCmHandle']"
 
@@ -126,9 +129,7 @@ class NetworkCmProxyDataServiceImplSpec extends Specification {
             mockCpsDataService.getDataNode('NCMP-Admin', 'ncmp-dmi-registry',
                 cmHandleXPath, FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS) >> dataNode
         and: 'objectMapper not able to parse object'
-            def mockObjectMapper = Mock(ObjectMapper)
-            objectUnderTest.objectMapper = mockObjectMapper
-            mockObjectMapper.writeValueAsString(_) >> { throw new JsonProcessingException('testException') }
+            spiedJsonObjectMapper.asJsonString(_) >> { throw new JsonProcessingException('testException') }
         and: 'dmi returns NOK response'
             mockDmiDataOperations.getResourceDataFromDmi(*_)
                 >> new ResponseEntity<>('NOK-json', HttpStatus.NOT_FOUND)
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
index b9704b1ea0..54ae0aa6fe 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -20,8 +20,10 @@
 
 package org.onap.cps.ncmp.api.impl.operations
 
-import org.onap.cps.ncmp.api.impl.client.DmiRestClient
+import com.fasterxml.jackson.databind.ObjectMapper
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration
+import org.onap.cps.utils.JsonObjectMapper
+import org.spockframework.spring.SpringBean
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.http.ResponseEntity
@@ -37,6 +39,9 @@ import org.springframework.http.HttpStatus
 @ContextConfiguration(classes = [NcmpConfiguration.DmiProperties, DmiDataOperations])
 class DmiDataOperationsSpec extends DmiOperationsBaseSpec {
 
+    @SpringBean
+    JsonObjectMapper jsonObjectMapper = new JsonObjectMapper(new ObjectMapper())
+
     @Autowired
     DmiDataOperations objectUnderTest
 
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiModelOperationsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiModelOperationsSpec.groovy
index 335bc062cc..2efd6c2b3a 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiModelOperationsSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiModelOperationsSpec.groovy
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2021 Nordix Foundation
+ *  Copyright (C) 2021-2022 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -21,9 +21,11 @@
 package org.onap.cps.ncmp.api.impl.operations
 
 import com.fasterxml.jackson.core.JsonProcessingException
+import com.fasterxml.jackson.databind.ObjectMapper
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration
-import org.onap.cps.ncmp.api.impl.exception.NcmpException
 import org.onap.cps.spi.model.ModuleReference
+import org.onap.cps.utils.JsonObjectMapper
+import org.spockframework.spring.SpringBean
 import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.http.HttpStatus
@@ -41,6 +43,9 @@ class DmiModelOperationsSpec extends DmiOperationsBaseSpec {
     @Autowired
     DmiModelOperations objectUnderTest
 
+    @SpringBean
+    JsonObjectMapper spiedJsonObjectMapper = Spy(new JsonObjectMapper(new ObjectMapper()))
+
     def 'Retrieving module references.'() {
         given: 'a persistence cm handle'
             mockPersistenceCmHandleRetrieval([])
@@ -158,11 +163,11 @@ class DmiModelOperationsSpec extends DmiOperationsBaseSpec {
         given: 'a persistence cm handle'
             mockPersistenceCmHandleRetrieval([])
         and: 'a Json processing exception occurs'
-            spyObjectMapper.writeValueAsString(_) >> {throw (new JsonProcessingException(''))}
+            spiedJsonObjectMapper.asJsonString(_) >> {throw (new JsonProcessingException('parsing error'))}
         when: 'a dmi operation is executed'
             objectUnderTest.getModuleReferences(persistenceCmHandle)
         then: 'an ncmp exception is thrown'
-            def exceptionThrown = thrown(NcmpException)
+            def exceptionThrown = thrown(JsonProcessingException)
         and: 'the message indicates a parsing error'
             exceptionThrown.message.toLowerCase().contains('parsing error')
     }