Replace jackson usages with GSON

Issue-ID: CLAMP-286
Change-Id: I3492811e248cbcf502656a992cea4f76deed46dc
Signed-off-by: Krysiak Adam <adam.krysiak@nokia.com>

29 files changed, 640 insertions, 671 deletions

diff --git a/src/main/java/org/onap/clamp/clds/client/DcaeDispatcherServices.java b/src/main/java/org/onap/clamp/clds/client/DcaeDispatcherServices.java
index 4151c7aad..68454525d 100644
--- a/src/main/java/org/onap/clamp/clds/client/DcaeDispatcherServices.java
+++ b/src/main/java/org/onap/clamp/clds/client/DcaeDispatcherServices.java
@@ -25,9 +25,8 @@ package org.onap.clamp.clds.client;
 

 import com.att.eelf.configuration.EELFLogger;

 import com.att.eelf.configuration.EELFManager;

-import com.fasterxml.jackson.databind.JsonNode;

-import com.fasterxml.jackson.databind.node.ObjectNode;

 

+import com.google.gson.JsonObject;

 import java.io.IOException;

 import java.util.Date;

 

@@ -122,16 +121,16 @@ public class DcaeDispatcherServices {
      *        The value for each blueprint parameters in a flat JSON

      * @return The status URL

      */

-    public String createNewDeployment(String deploymentId, String serviceTypeId, JsonNode blueprintInputJson) {

+    public String createNewDeployment(String deploymentId, String serviceTypeId, JsonObject blueprintInputJson) {

         Date startTime = new Date();

         LoggingUtils.setTargetContext("DCAE", "createNewDeployment");

         try {

-            ObjectNode rootNode = (ObjectNode) refProp.getJsonTemplate("dcae.deployment.template");

-            rootNode.put("serviceTypeId", serviceTypeId);

+            JsonObject rootObject = refProp.getJsonTemplate("dcae.deployment.template").getAsJsonObject();

+            rootObject.addProperty("serviceTypeId", serviceTypeId);

             if (blueprintInputJson != null) {

-                rootNode.set("inputs", blueprintInputJson);

+                rootObject.add("inputs", blueprintInputJson);

             }

-            String apiBodyString = rootNode.toString();

+            String apiBodyString = rootObject.toString();

             logger.info("Dcae api Body String - " + apiBodyString);

             String url = refProp.getStringValue(DCAE_URL_PROPERTY_NAME) + DCAE_URL_PREFIX + deploymentId;

             String statusUrl = getDcaeResponse(url, "PUT", apiBodyString, "application/json", DCAE_LINK_FIELD,

diff --git a/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java b/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
index 327aff1da..770230784 100644
--- a/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
+++ b/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
@@ -44,7 +44,7 @@ import org.onap.clamp.clds.model.DcaeEvent;
 import org.onap.clamp.clds.model.dcae.DcaeInventoryResponse;

 import org.onap.clamp.clds.model.properties.Global;

 import org.onap.clamp.clds.model.properties.ModelProperties;

-import org.onap.clamp.clds.util.JacksonUtils;

+import org.onap.clamp.clds.util.JsonUtils;

 import org.onap.clamp.clds.util.LoggingUtils;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.stereotype.Component;

@@ -155,14 +155,13 @@ public class DcaeInventoryServices {
     }

 

     private DcaeInventoryResponse getItemsFromDcaeInventoryResponse(String responseStr)

-        throws ParseException, IOException {

+        throws ParseException {

         JSONParser parser = new JSONParser();

         Object obj0 = parser.parse(responseStr);

         JSONObject jsonObj = (JSONObject) obj0;

         JSONArray itemsArray = (JSONArray) jsonObj.get("items");

         JSONObject dcaeServiceType0 = (JSONObject) itemsArray.get(0);

-        return JacksonUtils.getObjectMapperInstance().readValue(dcaeServiceType0.toString(),

-            DcaeInventoryResponse.class);

+        return JsonUtils.GSON.fromJson(dcaeServiceType0.toString(), DcaeInventoryResponse.class);

     }

 

     /**

diff --git a/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcCatalogServices.java b/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcCatalogServices.java
index cd7d4f2cc..37c62576c 100644
--- a/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcCatalogServices.java
+++ b/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcCatalogServices.java
@@ -26,18 +26,19 @@ package org.onap.clamp.clds.client.req.sdc;
 

 import com.att.eelf.configuration.EELFLogger;

 import com.att.eelf.configuration.EELFManager;

-import com.fasterxml.jackson.databind.JsonNode;

-import com.fasterxml.jackson.databind.ObjectMapper;

-import com.fasterxml.jackson.databind.node.ArrayNode;

-import com.fasterxml.jackson.databind.node.ObjectNode;

-import com.fasterxml.jackson.databind.node.TextNode;

 

+import com.google.gson.JsonArray;

+import com.google.gson.JsonElement;

+import com.google.gson.JsonObject;

+import com.google.gson.JsonParseException;

+import com.google.gson.reflect.TypeToken;

 import java.io.BufferedReader;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import java.io.StringReader;

+import java.lang.reflect.Type;

 import java.net.HttpURLConnection;

 import java.net.URL;

 import java.nio.charset.StandardCharsets;

@@ -68,7 +69,7 @@ import org.onap.clamp.clds.model.sdc.SdcServiceDetail;
 import org.onap.clamp.clds.model.sdc.SdcServiceInfo;

 import org.onap.clamp.clds.service.CldsService;

 import org.onap.clamp.clds.util.CryptoUtils;

-import org.onap.clamp.clds.util.JacksonUtils;

+import org.onap.clamp.clds.util.JsonUtils;

 import org.onap.clamp.clds.util.LoggingUtils;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.context.annotation.Primary;

@@ -80,17 +81,24 @@ public class SdcCatalogServices {
 

     private static final EELFLogger logger = EELFManager.getInstance().getLogger(SdcCatalogServices.class);

     private static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();

-    public static final String RESOURCE_VF_TYPE = "VF";

-    public static final String RESOURCE_VFC_TYPE = "VFC";

-    public static final String RESOURCE_CVFC_TYPE = "CVFC";

-    public static final String SDC_REQUESTID_PROPERTY_NAME = "sdc.header.requestId";

-    public static final String SDC_METADATA_URL_PREFIX = "/metadata";

-    public static final String SDC_INSTANCE_ID_PROPERTY_NAME = "sdc.InstanceID";

-    public static final String SDC_CATALOG_URL_PROPERTY_NAME = "sdc.catalog.url";

-    public static final String SDC_SERVICE_URL_PROPERTY_NAME = "sdc.serviceUrl";

-    public static final String SDC_INSTANCE_ID_CLAMP = "CLAMP-Tool";

-    public static final String RESOURCE_URL_PREFIX = "resources";

+    private static final String RESOURCE_VF_TYPE = "VF";

+    private static final String RESOURCE_VFC_TYPE = "VFC";

+    private static final String RESOURCE_CVFC_TYPE = "CVFC";

+    private static final String SDC_REQUESTID_PROPERTY_NAME = "sdc.header.requestId";

+    private static final String SDC_METADATA_URL_PREFIX = "/metadata";

+    private static final String SDC_INSTANCE_ID_PROPERTY_NAME = "sdc.InstanceID";

+    private static final String SDC_CATALOG_URL_PROPERTY_NAME = "sdc.catalog.url";

+    private static final String SDC_SERVICE_URL_PROPERTY_NAME = "sdc.serviceUrl";

+    private static final String SDC_INSTANCE_ID_CLAMP = "CLAMP-Tool";

+    private static final String RESOURCE_URL_PREFIX = "resources";

     private static final LoggingUtils utils = new LoggingUtils(logger);

+

+    private static final Type LIST_SDC_SERVICE_INFO_TYPE = new TypeToken<List<SdcServiceInfo>>() {

+    }.getType();

+

+    private static final Type LIST_SDC_RESOURCE_BASIC_INFO_TYPE = new TypeToken<List<SdcResourceBasicInfo>>() {

+    }.getType();

+

     @Autowired

     private ClampProperties refProp;

 

@@ -285,9 +293,8 @@ public class SdcCatalogServices {
             return new ArrayList<>();

         }

         try {

-            return JacksonUtils.getObjectMapperInstance().readValue(jsonStr, JacksonUtils.getObjectMapperInstance()

-                .getTypeFactory().constructCollectionType(List.class, SdcServiceInfo.class));

-        } catch (IOException e) {

+            return JsonUtils.GSON.fromJson(jsonStr, LIST_SDC_SERVICE_INFO_TYPE);

+        } catch (JsonParseException e) {

             logger.error("Error when attempting to decode the JSON containing CldsSdcServiceInfo", e);

             return new ArrayList<>();

         }

@@ -305,9 +312,8 @@ public class SdcCatalogServices {
             return new ArrayList<>();

         }

         try {

-            return JacksonUtils.getObjectMapperInstance().readValue(jsonStr, JacksonUtils.getObjectMapperInstance()

-                .getTypeFactory().constructCollectionType(List.class, SdcResourceBasicInfo.class));

-        } catch (IOException e) {

+            return JsonUtils.GSON.fromJson(jsonStr, LIST_SDC_RESOURCE_BASIC_INFO_TYPE);

+        } catch (JsonParseException e) {

             logger.error("Exception occurred when attempting to decode the list of CldsSdcResourceBasicInfo JSON", e);

             return new ArrayList<>();

         }

@@ -321,8 +327,8 @@ public class SdcCatalogServices {
      */

     public SdcServiceDetail decodeCldsSdcServiceDetailFromJson(String jsonStr) {

         try {

-            return JacksonUtils.getObjectMapperInstance().readValue(jsonStr, SdcServiceDetail.class);

-        } catch (IOException e) {

+            return JsonUtils.GSON.fromJson(jsonStr, SdcServiceDetail.class);

+        } catch (JsonParseException e) {

             logger.error("Exception when attempting to decode the CldsSdcServiceDetail JSON", e);

             return null;

         }

@@ -402,9 +408,8 @@ public class SdcCatalogServices {
         if (responseStr != null) {

             SdcServiceDetail cldsSdcServiceDetail;

             try {

-                cldsSdcServiceDetail = JacksonUtils.getObjectMapperInstance().readValue(responseStr,

-                    SdcServiceDetail.class);

-            } catch (IOException e) {

+                cldsSdcServiceDetail = JsonUtils.GSON.fromJson(responseStr, SdcServiceDetail.class);

+            } catch (JsonParseException e) {

                 logger.error("Exception when decoding the CldsServiceData JSON from SDC", e);

                 throw new SdcCommunicationException("Exception when decoding the CldsServiceData JSON from SDC", e);

             }

@@ -497,41 +502,43 @@ public class SdcCatalogServices {
     }

 

     private List<CldsVfcData> getVfcDataListFromVfResponse(String vfResponse) {

-        ObjectNode vfResponseNode;

+        JsonObject vfResponseNode;

         try {

-            vfResponseNode = (ObjectNode) JacksonUtils.getObjectMapperInstance().readTree(vfResponse);

-        } catch (IOException e) {

+            vfResponseNode = JsonUtils.GSON.fromJson(vfResponse, JsonObject.class);

+        } catch (JsonParseException e) {

             logger.error("Exception when decoding the JSON list of CldsVfcData", e);

             return new ArrayList<>();

         }

-        ArrayNode vfcArrayNode = (ArrayNode) vfResponseNode.get("resources");

+        JsonArray vfcArrayNode = vfResponseNode.get("resources").getAsJsonArray();

         List<CldsVfcData> cldsVfcDataList = new ArrayList<>();

         if (vfcArrayNode != null) {

-            for (JsonNode vfcjsonNode : vfcArrayNode) {

-                ObjectNode currVfcNode = (ObjectNode) vfcjsonNode;

-                TextNode resourceTypeNode = (TextNode) currVfcNode.get("resoucreType");

-                if (resourceTypeNode != null && "VFC".equalsIgnoreCase(resourceTypeNode.textValue())) {

-                    handleVFCtypeNode(currVfcNode, cldsVfcDataList);

-                } else if (resourceTypeNode != null && "CVFC".equalsIgnoreCase(resourceTypeNode.textValue())) {

-                    handleCVFCtypeNode(currVfcNode, cldsVfcDataList);

+            for (JsonElement vfcjsonNode : vfcArrayNode) {

+                JsonObject currVfcNode = vfcjsonNode.getAsJsonObject();

+                JsonElement resourceTypeNode = currVfcNode.get("resoucreType");

+                if (resourceTypeNode != null && resourceTypeNode.isJsonPrimitive()) {

+                    if ("VFC".equalsIgnoreCase(resourceTypeNode.getAsString())) {

+                        handleVFCtypeNode(currVfcNode, cldsVfcDataList);

+                    } else if ("CVFC".equalsIgnoreCase(resourceTypeNode.getAsString())) {

+                        handleCVFCtypeNode(currVfcNode, cldsVfcDataList);

+                    }

                 }

             }

         }

         return cldsVfcDataList;

     }

 

-    private void handleVFCtypeNode(ObjectNode currVfcNode, List<CldsVfcData> cldsVfcDataList) {

+    private void handleVFCtypeNode(JsonObject currVfcNode, List<CldsVfcData> cldsVfcDataList) {

         CldsVfcData currCldsVfcData = new CldsVfcData();

-        TextNode vfcResourceName = (TextNode) currVfcNode.get("resourceInstanceName");

-        TextNode vfcInvariantResourceUuid = (TextNode) currVfcNode.get("resourceInvariantUUID");

-        currCldsVfcData.setVfcName(vfcResourceName.textValue());

-        currCldsVfcData.setVfcInvariantResourceUUID(vfcInvariantResourceUuid.textValue());

+        String vfcResourceName = currVfcNode.get("resourceInstanceName").getAsString();

+        String vfcInvariantResourceUuid = currVfcNode.get("resourceInvariantUUID").getAsString();

+        currCldsVfcData.setVfcName(vfcResourceName);

+        currCldsVfcData.setVfcInvariantResourceUUID(vfcInvariantResourceUuid);

         cldsVfcDataList.add(currCldsVfcData);

     }

 

-    private void handleCVFCtypeNode(ObjectNode currVfcNode, List<CldsVfcData> cldsVfcDataList) {

+    private void handleCVFCtypeNode(JsonObject currVfcNode, List<CldsVfcData> cldsVfcDataList) {

         handleVFCtypeNode(currVfcNode, cldsVfcDataList);

-        cldsVfcDataList.addAll(getVFCfromCVFC(currVfcNode.get("resourceUUID").textValue()));

+        cldsVfcDataList.addAll(getVFCfromCVFC(currVfcNode.get("resourceUUID").getAsString()));

     }

 

     private List<CldsVfcData> getVFCfromCVFC(String resourceUUID) {

@@ -541,18 +548,18 @@ public class SdcCatalogServices {
             String vfcResourceUUIDUrl = catalogUrl + RESOURCE_URL_PREFIX + "/" + resourceUUID + SDC_METADATA_URL_PREFIX;

             try {

                 String vfcResponse = getCldsServicesOrResourcesBasedOnURL(vfcResourceUUIDUrl);

-                ObjectNode vfResponseNode = (ObjectNode) JacksonUtils.getObjectMapperInstance().readTree(vfcResponse);

-                ArrayNode vfcArrayNode = (ArrayNode) vfResponseNode.get("resources");

+                JsonObject vfResponseNode = JsonUtils.GSON.fromJson(vfcResponse, JsonObject.class);

+                JsonArray vfcArrayNode = vfResponseNode.get("resources").getAsJsonArray();

                 if (vfcArrayNode != null) {

-                    for (JsonNode vfcjsonNode : vfcArrayNode) {

-                        ObjectNode currVfcNode = (ObjectNode) vfcjsonNode;

-                        TextNode resourceTypeNode = (TextNode) currVfcNode.get("resoucreType");

-                        if (resourceTypeNode != null && "VFC".equalsIgnoreCase(resourceTypeNode.textValue())) {

+                    for (JsonElement vfcjsonNode : vfcArrayNode) {

+                        JsonObject currVfcNode = vfcjsonNode.getAsJsonObject();

+                        JsonElement resourceTypeNode = currVfcNode.get("resoucreType");

+                        if (resourceTypeNode != null && resourceTypeNode.isJsonPrimitive() && "VFC".equalsIgnoreCase(resourceTypeNode.getAsString())) {

                             handleVFCtypeNode(currVfcNode, cldsVfcDataList);

                         }

                     }

                 }

-            } catch (IOException e) {

+            } catch (JsonParseException e) {

                 logger.error("Exception during JSON analyzis", e);

             }

         }

@@ -565,20 +572,21 @@ public class SdcCatalogServices {
 

     private List<CldsAlarmCondition> getAlarmCondtionsFromVfc(String vfcResponse) throws GeneralSecurityException {

         List<CldsAlarmCondition> cldsAlarmConditionList = new ArrayList<>();

-        ObjectNode vfcResponseNode;

+        JsonObject vfcResponseNode;

         try {

-            vfcResponseNode = (ObjectNode) JacksonUtils.getObjectMapperInstance().readTree(vfcResponse);

-        } catch (IOException e) {

+            vfcResponseNode = JsonUtils.GSON.fromJson(vfcResponse, JsonObject.class);

+        } catch (JsonParseException e) {

             logger.error("Exception when decoding the JSON list of CldsAlarmCondition", e);

             return cldsAlarmConditionList;

         }

-        ArrayNode artifactsArrayNode = (ArrayNode) vfcResponseNode.get("artifacts");

-        if (artifactsArrayNode != null && artifactsArrayNode.size() > 0) {

-            for (int index = 0; index < artifactsArrayNode.size(); index++) {

-                ObjectNode currArtifactNode = (ObjectNode) artifactsArrayNode.get(index);

-                TextNode artifactUrlNode = (TextNode) currArtifactNode.get("artifactURL");

-                if (artifactUrlNode != null) {

-                    String responsesFromArtifactUrl = getResponsesFromArtifactUrl(artifactUrlNode.textValue());

+        JsonElement artifactsNode = vfcResponseNode.get("artifacts");

+        if (artifactsNode != null && artifactsNode.isJsonArray() && artifactsNode.getAsJsonArray().size() > 0) {

+            JsonArray artifactsList = artifactsNode.getAsJsonArray();

+            for (int index = 0; index < artifactsList.size(); index++) {

+                JsonObject currArtifactNode = artifactsList.get(index).getAsJsonObject();

+                JsonElement artifactUrlNode = currArtifactNode.get("artifactURL");

+                if (artifactUrlNode != null && artifactUrlNode.isJsonPrimitive()) {

+                    String responsesFromArtifactUrl = getResponsesFromArtifactUrl(artifactUrlNode.getAsString());

                     cldsAlarmConditionList.addAll(parseCsvToGetAlarmConditions(responsesFromArtifactUrl));

                     logger.info(responsesFromArtifactUrl);

                 }

@@ -609,26 +617,26 @@ public class SdcCatalogServices {
     // Method to get the artifact for any particular VF

     private List<CldsVfKPIData> getFieldPathFromVF(String vfResponse) throws GeneralSecurityException {

         List<CldsVfKPIData> cldsVfKPIDataList = new ArrayList<>();

-        ObjectNode vfResponseNode;

+        JsonObject vfResponseNode;

         try {

-            vfResponseNode = (ObjectNode) JacksonUtils.getObjectMapperInstance().readTree(vfResponse);

-        } catch (IOException e) {

+            vfResponseNode = JsonUtils.GSON.fromJson(vfResponse, JsonObject.class);

+        } catch (JsonParseException e) {

             logger.error("Exception when decoding the JSON list of CldsVfKPIData", e);

             return cldsVfKPIDataList;

         }

-        ArrayNode artifactsArrayNode = (ArrayNode) vfResponseNode.get("artifacts");

+        JsonArray artifactsArrayNode = vfResponseNode.get("artifacts").getAsJsonArray();

         if (artifactsArrayNode != null && artifactsArrayNode.size() > 0) {

             for (int index = 0; index < artifactsArrayNode.size(); index++) {

-                ObjectNode currArtifactNode = (ObjectNode) artifactsArrayNode.get(index);

-                TextNode artifactUrlNode = (TextNode) currArtifactNode.get("artifactURL");

-                TextNode artifactNameNode = (TextNode) currArtifactNode.get("artifactName");

+                JsonObject currArtifactNode = artifactsArrayNode.get(index).getAsJsonObject();

+                JsonElement artifactUrlNode = currArtifactNode.get("artifactURL");

+                JsonElement artifactNameNode = currArtifactNode.get("artifactName");

                 String artifactName = "";

                 if (artifactNameNode != null) {

-                    artifactName = artifactNameNode.textValue();

+                    artifactName = artifactNameNode.getAsString();

                     artifactName = artifactName.substring(artifactName.lastIndexOf('.') + 1);

                 }

                 if (artifactUrlNode != null && "csv".equalsIgnoreCase(artifactName)) {

-                    String responsesFromArtifactUrl = getResponsesFromArtifactUrl(artifactUrlNode.textValue());

+                    String responsesFromArtifactUrl = getResponsesFromArtifactUrl(artifactUrlNode.getAsString());

                     cldsVfKPIDataList.addAll(parseCsvToGetFieldPath(responsesFromArtifactUrl));

                     logger.info(responsesFromArtifactUrl);

                 }

@@ -760,37 +768,32 @@ public class SdcCatalogServices {
     /**

      * To create properties object by using cldsServicedata.

      *

-     * @param globalProps

-     * @param cldsServiceData

-     * @return

-     * @throws IOException

-     *         In case of issues during the parsing of the Global Properties

+     * @throws IOException In case of issues during the parsing of the Global Properties

      */

     public String createPropertiesObjectByUUID(CldsServiceData cldsServiceData) throws IOException {

         String totalPropsStr;

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

-        ObjectNode globalPropsJson = (ObjectNode) refProp.getJsonTemplate(CldsService.GLOBAL_PROPERTIES_KEY);

+        JsonObject globalPropsJson = refProp.getJsonTemplate(CldsService.GLOBAL_PROPERTIES_KEY).getAsJsonObject();

         if (cldsServiceData != null && cldsServiceData.getServiceUUID() != null) {

             // Objectnode to save all byservice, byvf , byvfc and byalarm nodes

-            ObjectNode byIdObjectNode = mapper.createObjectNode();

+            JsonObject byIdObjectNode = new JsonObject();

             // To create vf ResourceUUID node with serviceInvariantUUID

-            ObjectNode invariantUuidObjectNodeWithVf = createVfObjectNodeByServiceInvariantUuid(cldsServiceData);

-            byIdObjectNode.putPOJO("byService", invariantUuidObjectNodeWithVf);

+            JsonObject invariantUuidObjectNodeWithVf = createVfObjectNodeByServiceInvariantUuid(cldsServiceData);

+            byIdObjectNode.add("byService", invariantUuidObjectNodeWithVf);

             // To create byVf and vfcResourceNode with vfResourceUUID

-            ObjectNode vfcObjectNodeByVfUuid = createVfcObjectNodeByVfUuid(cldsServiceData.getCldsVfs());

-            byIdObjectNode.putPOJO("byVf", vfcObjectNodeByVfUuid);

+            JsonObject vfcObjectNodeByVfUuid = createVfcObjectNodeByVfUuid(cldsServiceData.getCldsVfs());

+            byIdObjectNode.add("byVf", vfcObjectNodeByVfUuid);

             // To create byKpi

-            ObjectNode kpiObjectNode = mapper.createObjectNode();

+            JsonObject kpiJsonObject = new JsonObject();

             if (cldsServiceData.getCldsVfs() != null && !cldsServiceData.getCldsVfs().isEmpty()) {

                 for (CldsVfData currCldsVfData : cldsServiceData.getCldsVfs()) {

                     if (currCldsVfData != null) {

-                        createKpiObjectNodeByVfUuid(kpiObjectNode, currCldsVfData.getCldsKPIList());

+                        createKpiObjectNodeByVfUuid(kpiJsonObject, currCldsVfData.getCldsKPIList());

                     }

                 }

             }

-            byIdObjectNode.putPOJO("byKpi", kpiObjectNode);

+            byIdObjectNode.add("byKpi", kpiJsonObject);

             // To create byVfc and alarmCondition with vfcResourceUUID

-            ObjectNode vfcResourceUuidObjectNode = mapper.createObjectNode();

+            JsonObject vfcResourceUuidObjectNode = new JsonObject();

             if (cldsServiceData.getCldsVfs() != null && !cldsServiceData.getCldsVfs().isEmpty()) {

                 for (CldsVfData currCldsVfData : cldsServiceData.getCldsVfs()) {

                     if (currCldsVfData != null) {

@@ -798,18 +801,18 @@ public class SdcCatalogServices {
                     }

                 }

             }

-            byIdObjectNode.putPOJO("byVfc", vfcResourceUuidObjectNode);

+            byIdObjectNode.add("byVfc", vfcResourceUuidObjectNode);

             // To create byAlarmCondition with alarmConditionKey

             List<CldsAlarmCondition> allAlarmConditions = getAllAlarmConditionsFromCldsServiceData(cldsServiceData,

                 "alarmCondition");

-            ObjectNode alarmCondObjectNodeByAlarmKey = createAlarmCondObjectNodeByAlarmKey(allAlarmConditions);

-            byIdObjectNode.putPOJO("byAlarmCondition", alarmCondObjectNodeByAlarmKey);

+            JsonObject alarmCondObjectNodeByAlarmKey = createAlarmCondObjectNodeByAlarmKey(allAlarmConditions);

+            byIdObjectNode.add("byAlarmCondition", alarmCondObjectNodeByAlarmKey);

             // To create byAlertDescription with AlertDescription

             List<CldsAlarmCondition> allAlertDescriptions = getAllAlarmConditionsFromCldsServiceData(cldsServiceData,

                 "alertDescription");

-            ObjectNode alertDescObjectNodeByAlert = createAlarmCondObjectNodeByAlarmKey(allAlertDescriptions);

-            byIdObjectNode.putPOJO("byAlertDescription", alertDescObjectNodeByAlert);

-            globalPropsJson.putPOJO("shared", byIdObjectNode);

+            JsonObject alertDescObjectNodeByAlert = createAlarmCondObjectNodeByAlarmKey(allAlertDescriptions);

+            byIdObjectNode.add("byAlertDescription", alertDescObjectNodeByAlert);

+            globalPropsJson.add("shared", byIdObjectNode);

             logger.info("Global properties JSON created with SDC info:" + globalPropsJson);

         }

         totalPropsStr = globalPropsJson.toString();

@@ -880,73 +883,69 @@ public class SdcCatalogServices {
         return alarmCondList;

     }

 

-    private ObjectNode createAlarmCondObjectNodeByAlarmKey(List<CldsAlarmCondition> cldsAlarmCondList) {

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

-        ObjectNode alarmCondKeyNode = mapper.createObjectNode();

+    private JsonObject createAlarmCondObjectNodeByAlarmKey(List<CldsAlarmCondition> cldsAlarmCondList) {

+        JsonObject alarmCondKeyNode = new JsonObject();

         if (cldsAlarmCondList != null && !cldsAlarmCondList.isEmpty()) {

             for (CldsAlarmCondition currCldsAlarmCondition : cldsAlarmCondList) {

                 if (currCldsAlarmCondition != null) {

-                    ObjectNode alarmCondNode = mapper.createObjectNode();

-                    alarmCondNode.put("eventSourceType", currCldsAlarmCondition.getEventSourceType());

-                    alarmCondNode.put("eventSeverity", currCldsAlarmCondition.getSeverity());

-                    alarmCondKeyNode.putPOJO(currCldsAlarmCondition.getAlarmConditionKey(), alarmCondNode);

+                    JsonObject alarmCondNode = new JsonObject();

+                    alarmCondNode.addProperty("eventSourceType", currCldsAlarmCondition.getEventSourceType());

+                    alarmCondNode.addProperty("eventSeverity", currCldsAlarmCondition.getSeverity());

+                    alarmCondKeyNode.add(currCldsAlarmCondition.getAlarmConditionKey(), alarmCondNode);

                 }

             }

         } else {

-            ObjectNode alarmCondNode = mapper.createObjectNode();

-            alarmCondNode.put("eventSourceType", "");

-            alarmCondNode.put("eventSeverity", "");

-            alarmCondKeyNode.putPOJO("", alarmCondNode);

+            JsonObject alarmCondNode = new JsonObject();

+            alarmCondNode.addProperty("eventSourceType", "");

+            alarmCondNode.addProperty("eventSeverity", "");

+            alarmCondKeyNode.add("", alarmCondNode);

         }

         return alarmCondKeyNode;

     }

 

-    private ObjectNode createVfObjectNodeByServiceInvariantUuid(CldsServiceData cldsServiceData) {

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

-        ObjectNode invariantUuidObjectNode = mapper.createObjectNode();

-        ObjectNode vfObjectNode = mapper.createObjectNode();

-        ObjectNode vfUuidNode = mapper.createObjectNode();

+    private JsonObject createVfObjectNodeByServiceInvariantUuid(CldsServiceData cldsServiceData) {

+        JsonObject invariantUuidObjectNode = new JsonObject();

+        JsonObject vfObjectNode = new JsonObject();

+        JsonObject vfUuidNode = new JsonObject();

         List<CldsVfData> cldsVfsList = cldsServiceData.getCldsVfs();

         if (cldsVfsList != null && !cldsVfsList.isEmpty()) {

             for (CldsVfData currCldsVfData : cldsVfsList) {

                 if (currCldsVfData != null) {

-                    vfUuidNode.put(currCldsVfData.getVfInvariantResourceUUID(), currCldsVfData.getVfName());

+                    vfUuidNode.addProperty(currCldsVfData.getVfInvariantResourceUUID(), currCldsVfData.getVfName());

                 }

             }

         } else {

-            vfUuidNode.put("", "");

+            vfUuidNode.addProperty("", "");

         }

-        vfObjectNode.putPOJO("vf", vfUuidNode);

-        invariantUuidObjectNode.putPOJO(cldsServiceData.getServiceInvariantUUID(), vfObjectNode);

+        vfObjectNode.add("vf", vfUuidNode);

+        invariantUuidObjectNode.add(cldsServiceData.getServiceInvariantUUID(), vfObjectNode);

         return invariantUuidObjectNode;

     }

 

-    private void createKpiObjectNodeByVfUuid(ObjectNode vfResourceUuidObjectNode,

+    private void createKpiObjectNodeByVfUuid(JsonObject vfResourceUuidObjectNode,

         List<CldsVfKPIData> cldsVfKpiDataList) {

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

         if (cldsVfKpiDataList != null && !cldsVfKpiDataList.isEmpty()) {

             for (CldsVfKPIData currCldsVfKpiData : cldsVfKpiDataList) {

                 if (currCldsVfKpiData != null) {

-                    ObjectNode thresholdNameObjectNode = mapper.createObjectNode();

-                    ObjectNode fieldPathObjectNode = mapper.createObjectNode();

-                    ObjectNode nfNamingCodeNode = mapper.createObjectNode();

-                    fieldPathObjectNode.put(currCldsVfKpiData.getFieldPathValue(),

+                    JsonObject thresholdNameObjectNode = new JsonObject();

+                    JsonObject fieldPathObjectNode = new JsonObject();

+                    JsonObject nfNamingCodeNode = new JsonObject();

+                    fieldPathObjectNode.addProperty(currCldsVfKpiData.getFieldPathValue(),

                         currCldsVfKpiData.getFieldPathValue());

-                    nfNamingCodeNode.put(currCldsVfKpiData.getNfNamingValue(), currCldsVfKpiData.getNfNamingValue());

-                    thresholdNameObjectNode.putPOJO("fieldPath", fieldPathObjectNode);

-                    thresholdNameObjectNode.putPOJO("nfNamingCode", nfNamingCodeNode);

-                    vfResourceUuidObjectNode.putPOJO(currCldsVfKpiData.getThresholdValue(), thresholdNameObjectNode);

+                    nfNamingCodeNode.addProperty(currCldsVfKpiData.getNfNamingValue(), currCldsVfKpiData.getNfNamingValue());

+                    thresholdNameObjectNode.add("fieldPath", fieldPathObjectNode);

+                    thresholdNameObjectNode.add("nfNamingCode", nfNamingCodeNode);

+                    vfResourceUuidObjectNode.add(currCldsVfKpiData.getThresholdValue(), thresholdNameObjectNode);

                 }

             }

         }

     }

 

-    private void createAlarmCondObjectNodeByVfcUuid(ObjectNode vfcResourceUuidObjectNode,

+    private void createAlarmCondObjectNodeByVfcUuid(JsonObject vfcResourceUuidObjectNode,

         List<CldsVfcData> cldsVfcDataList) {

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

-        ObjectNode vfcObjectNode = mapper.createObjectNode();

-        ObjectNode alarmCondNode = mapper.createObjectNode();

-        ObjectNode alertDescNode = mapper.createObjectNode();

+        JsonObject vfcObjectNode = new JsonObject();

+        JsonObject alarmCondNode = new JsonObject();

+        JsonObject alertDescNode = new JsonObject();

         if (cldsVfcDataList != null && !cldsVfcDataList.isEmpty()) {

             for (CldsVfcData currCldsVfcData : cldsVfcDataList) {

                 if (currCldsVfcData != null) {

@@ -954,25 +953,25 @@ public class SdcCatalogServices {
                         && !currCldsVfcData.getCldsAlarmConditions().isEmpty()) {

                         for (CldsAlarmCondition currCldsAlarmCondition : currCldsVfcData.getCldsAlarmConditions()) {

                             if ("alarmCondition".equalsIgnoreCase(currCldsAlarmCondition.getEventName())) {

-                                alarmCondNode.put(currCldsAlarmCondition.getAlarmConditionKey(),

+                                alarmCondNode.addProperty(currCldsAlarmCondition.getAlarmConditionKey(),

                                     currCldsAlarmCondition.getAlarmConditionKey());

                             } else {

-                                alertDescNode.put(currCldsAlarmCondition.getAlarmConditionKey(),

+                                alertDescNode.addProperty(currCldsAlarmCondition.getAlarmConditionKey(),

                                     currCldsAlarmCondition.getAlarmConditionKey());

                             }

                         }

                     }

-                    vfcObjectNode.putPOJO("alarmCondition", alarmCondNode);

-                    vfcObjectNode.putPOJO("alertDescription", alertDescNode);

-                    vfcResourceUuidObjectNode.putPOJO(currCldsVfcData.getVfcInvariantResourceUUID(), vfcObjectNode);

+                    vfcObjectNode.add("alarmCondition", alarmCondNode);

+                    vfcObjectNode.add("alertDescription", alertDescNode);

+                    vfcResourceUuidObjectNode.add(currCldsVfcData.getVfcInvariantResourceUUID(), vfcObjectNode);

                 }

             }

         } else {

-            alarmCondNode.put("", "");

-            vfcObjectNode.putPOJO("alarmCondition", alarmCondNode);

-            alertDescNode.put("", "");

-            vfcObjectNode.putPOJO("alertDescription", alarmCondNode);

-            vfcResourceUuidObjectNode.putPOJO("", vfcObjectNode);

+            alarmCondNode.addProperty("", "");

+            vfcObjectNode.add("alarmCondition", alarmCondNode);

+            alertDescNode.addProperty("", "");

+            vfcObjectNode.add("alertDescription", alarmCondNode);

+            vfcResourceUuidObjectNode.add("", vfcObjectNode);

         }

     }

 

@@ -983,45 +982,45 @@ public class SdcCatalogServices {
      * @param cldsVfDataList

      * @return

      */

-    private ObjectNode createVfcObjectNodeByVfUuid(List<CldsVfData> cldsVfDataList) {

-        ObjectMapper mapper = JacksonUtils.getObjectMapperInstance();

-        ObjectNode vfUuidObjectNode = mapper.createObjectNode();

+    private JsonObject createVfcObjectNodeByVfUuid(List<CldsVfData> cldsVfDataList) {

+        JsonObject vfUuidObjectNode = new JsonObject();

         if (cldsVfDataList != null && !cldsVfDataList.isEmpty()) {

             for (CldsVfData currCldsVfData : cldsVfDataList) {

                 if (currCldsVfData != null) {

-                    ObjectNode vfObjectNode = mapper.createObjectNode();

-                    ObjectNode vfcUuidNode = mapper.createObjectNode();

-                    ObjectNode kpiObjectNode = mapper.createObjectNode();

+                    JsonObject vfObjectNode = new JsonObject();

+                    JsonObject vfcUuidNode = new JsonObject();

+                    JsonObject kpiObjectNode = new JsonObject();

                     if (currCldsVfData.getCldsVfcs() != null && !currCldsVfData.getCldsVfcs().isEmpty()) {

                         for (CldsVfcData currCldsVfcData : currCldsVfData.getCldsVfcs()) {

                             if (currCldsVfcData.getCldsAlarmConditions() != null

                                 && !currCldsVfcData.getCldsAlarmConditions().isEmpty()) {

-                                vfcUuidNode.put(currCldsVfcData.getVfcInvariantResourceUUID(),

+                                vfcUuidNode.addProperty(currCldsVfcData.getVfcInvariantResourceUUID(),

                                     currCldsVfcData.getVfcName());

                             }

                         }

                     } else {

-                        vfcUuidNode.put("", "");

+                        vfcUuidNode.addProperty("", "");

                     }

                     if (currCldsVfData.getCldsKPIList() != null && !currCldsVfData.getCldsKPIList().isEmpty()) {

                         for (CldsVfKPIData currCldsVfKPIData : currCldsVfData.getCldsKPIList()) {

-                            kpiObjectNode.put(currCldsVfKPIData.getThresholdValue(),

+                            // ToDo: something wrong happened here

+                            kpiObjectNode.addProperty(currCldsVfKPIData.getThresholdValue(),

                                 currCldsVfKPIData.getThresholdValue());

                         }

                     } else {

-                        kpiObjectNode.put("", "");

+                        kpiObjectNode.addProperty("", "");

                     }

-                    vfObjectNode.putPOJO("vfc", vfcUuidNode);

-                    vfObjectNode.putPOJO("kpi", kpiObjectNode);

-                    vfUuidObjectNode.putPOJO(currCldsVfData.getVfInvariantResourceUUID(), vfObjectNode);

+                    vfObjectNode.add("vfc", vfcUuidNode);

+                    vfObjectNode.add("kpi", kpiObjectNode);

+                    vfUuidObjectNode.add(currCldsVfData.getVfInvariantResourceUUID(), vfObjectNode);

                 }

             }

         } else {

-            ObjectNode vfcUuidNode = mapper.createObjectNode();

-            vfcUuidNode.put("", "");

-            ObjectNode vfcObjectNode = mapper.createObjectNode();

-            vfcObjectNode.putPOJO("vfc", vfcUuidNode);

-            vfUuidObjectNode.putPOJO("", vfcObjectNode);

+            JsonObject vfcUuidNode = new JsonObject();

+            vfcUuidNode.addProperty("", "");

+            JsonObject vfcObjectNode = new JsonObject();

+            vfcObjectNode.add("vfc", vfcUuidNode);

+            vfUuidObjectNode.add("", vfcObjectNode);

         }

         return vfUuidObjectNode;

     }

diff --git a/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcRequests.java b/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcRequests.java
index efd664c65..d9093f4e4 100644
--- a/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcRequests.java
+++ b/src/main/java/org/onap/clamp/clds/client/req/sdc/SdcRequests.java
@@ -25,11 +25,10 @@ package org.onap.clamp.clds.client.req.sdc;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ArrayNode;
-import com.fasterxml.jackson.databind.node.ObjectNode;
 
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.security.GeneralSecurityException;
@@ -47,7 +46,7 @@ import org.onap.clamp.clds.model.properties.ModelProperties;
 import org.onap.clamp.clds.model.properties.Tca;
 import org.onap.clamp.clds.model.sdc.SdcResource;
 import org.onap.clamp.clds.model.sdc.SdcServiceDetail;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Primary;
 import org.springframework.stereotype.Component;
@@ -98,16 +97,15 @@ public class SdcRequests {
      * @return SDC Locations request in the JSON Format
      */
     public String formatSdcLocationsReq(ModelProperties prop, String artifactName) {
-        ObjectMapper objectMapper = JacksonUtils.getObjectMapperInstance();
         Global global = prop.getGlobal();
         List<String> locationsList = global.getLocation();
-        ArrayNode locationsArrayNode = objectMapper.createArrayNode();
-        ObjectNode locationObject = objectMapper.createObjectNode();
+        JsonArray locationsArrayNode = new JsonArray();
+        JsonObject locationObject = new JsonObject();
         for (String currLocation : locationsList) {
             locationsArrayNode.add(currLocation);
         }
-        locationObject.put("artifactName", artifactName);
-        locationObject.putPOJO("locations", locationsArrayNode);
+        locationObject.addProperty("artifactName", artifactName);
+        locationObject.add("locations", locationsArrayNode);
         String locationJsonFormat = locationObject.toString();
         logger.info("Value of location Json Artifact:" + locationsArrayNode);
         return locationJsonFormat;
@@ -207,18 +205,18 @@ public class SdcRequests {
      */
     protected String getYamlvalue(String jsonGlobal) throws IOException {
         String yamlFileValue = "";
-        ObjectNode root = JacksonUtils.getObjectMapperInstance().readValue(jsonGlobal, ObjectNode.class);
-        Iterator<Entry<String, JsonNode>> entryItr = root.fields();
+        JsonObject root = JsonUtils.GSON.fromJson(jsonGlobal, JsonObject.class);
+        Iterator<Entry<String, JsonElement>> entryItr = root.entrySet().iterator();
         while (entryItr.hasNext()) {
-            Entry<String, JsonNode> entry = entryItr.next();
+            Entry<String, JsonElement> entry = entryItr.next();
             String key = entry.getKey();
             if (key != null && key.equalsIgnoreCase("global")) {
-                ArrayNode arrayNode = (ArrayNode) entry.getValue();
-                for (JsonNode anArrayNode : arrayNode) {
-                    ObjectNode node = (ObjectNode) anArrayNode;
-                    ArrayNode arrayValueNode = (ArrayNode) node.get("value");
-                    JsonNode jsonNode = arrayValueNode.get(0);
-                    yamlFileValue = jsonNode.asText();
+                JsonArray arrayNode = entry.getValue().getAsJsonArray();
+                for (JsonElement anArrayNode : arrayNode) {
+                    JsonObject node = anArrayNode.getAsJsonObject();
+                    JsonArray arrayValueNode = node.get("value").getAsJsonArray();
+                    JsonElement jsonNode = arrayValueNode.get(0);
+                    yamlFileValue = jsonNode.getAsString();
                     logger.info("value:" + yamlFileValue);
                 }
                 break;
diff --git a/src/main/java/org/onap/clamp/clds/client/req/tca/TcaRequestFormatter.java b/src/main/java/org/onap/clamp/clds/client/req/tca/TcaRequestFormatter.java
index 1478342c5..6b8f04397 100644
--- a/src/main/java/org/onap/clamp/clds/client/req/tca/TcaRequestFormatter.java
+++ b/src/main/java/org/onap/clamp/clds/client/req/tca/TcaRequestFormatter.java
@@ -25,10 +25,9 @@ package org.onap.clamp.clds.client.req.tca;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.node.ArrayNode;
-import com.fasterxml.jackson.databind.node.ObjectNode;
 
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
 import java.io.IOException;
 import java.util.Map;
 
@@ -38,6 +37,7 @@ import org.onap.clamp.clds.model.properties.ModelProperties;
 import org.onap.clamp.clds.model.properties.Tca;
 import org.onap.clamp.clds.model.properties.TcaItem;
 import org.onap.clamp.clds.model.properties.TcaThreshold;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.yaml.snakeyaml.Yaml;
 
 /**
@@ -71,10 +71,10 @@ public class TcaRequestFormatter {
             modelProperties.setCurrentModelElementId(tca.getId());
             // Always one tcaItem so must be set to id 0
             modelProperties.setPolicyUniqueId("0");
-            ObjectNode rootNode = (ObjectNode) refProp.getJsonTemplate("tca.policy.template", service);
+            JsonObject rootNode = refProp.getJsonTemplate("tca.policy.template", service ).getAsJsonObject();
             String policyName = modelProperties.getCurrentPolicyScopeAndPolicyName();
-            rootNode.put("policyName", policyName);
-            ((ObjectNode) rootNode.get("content")).replace("tca_policy",
+            rootNode.addProperty("policyName", policyName);
+            rootNode.get("content").getAsJsonObject().add("tca_policy",
                     createPolicyContent(refProp, modelProperties, service, policyName, tca));
             String tcaPolicyReq = rootNode.toString();
             logger.info("tcaPolicyReq=" + tcaPolicyReq);
@@ -104,7 +104,7 @@ public class TcaRequestFormatter {
      *            modelProperties.setCurrentModelElementId will be used
      * @return The Json node containing what should be sent to policy
      */
-    public static JsonNode createPolicyContent(ClampProperties refProp, ModelProperties modelProperties, String service,
+    public static JsonObject createPolicyContent(ClampProperties refProp, ModelProperties modelProperties, String service,
             String policyName, Tca tca) {
         try {
             String serviceToUse = service;
@@ -120,14 +120,12 @@ public class TcaRequestFormatter {
             if (policyNameToUse == null) {
                 policyNameToUse = modelProperties.getCurrentPolicyScopeAndPolicyName();
             }
-            ObjectNode rootNode = (ObjectNode) refProp.getJsonTemplate("tca.template", serviceToUse);
-            ((ObjectNode) rootNode.get("metricsPerEventName").get(0)).put("eventName",
-                    tcaToUse.getTcaItem().getEventName());
-            ((ObjectNode) rootNode.get("metricsPerEventName").get(0)).put("policyName", policyNameToUse);
-            ((ObjectNode) rootNode.get("metricsPerEventName").get(0)).put("controlLoopSchemaType",
-                    tcaToUse.getTcaItem().getControlLoopSchemaType());
-            ObjectNode thresholdsParent = ((ObjectNode) rootNode.get("metricsPerEventName").get(0));
-            addThresholds(refProp, serviceToUse, thresholdsParent, tcaToUse.getTcaItem(), modelProperties);
+            JsonObject rootNode = refProp.getJsonTemplate("tca.template", serviceToUse).getAsJsonObject();
+            JsonObject metricsPerEventName = rootNode.get("metricsPerEventName").getAsJsonArray().get(0).getAsJsonObject();
+            metricsPerEventName.addProperty("eventName", tcaToUse.getTcaItem().getEventName());
+            metricsPerEventName.addProperty("policyName", policyNameToUse);
+            metricsPerEventName.addProperty("controlLoopSchemaType",tcaToUse.getTcaItem().getControlLoopSchemaType());
+            addThresholds(refProp, serviceToUse, metricsPerEventName, tcaToUse.getTcaItem(), modelProperties);
             logger.info("tcaPolicyContent=" + rootNode.toString());
             return rootNode;
         } catch (IOException e) {
@@ -154,17 +152,17 @@ public class TcaRequestFormatter {
      *            The Model Properties created from BPMN JSON and BPMN
      *            properties JSON
      */
-    private static void addThresholds(ClampProperties refProp, String service, ObjectNode appendToNode, TcaItem tcaItem,
+    private static void addThresholds(ClampProperties refProp, String service, JsonObject appendToNode, TcaItem tcaItem,
             ModelProperties modelProperties) {
-        ArrayNode tcaNodes = appendToNode.withArray("thresholds");
+        JsonArray tcaNodes = appendToNode.get("thresholds").getAsJsonArray();
         try {
             for (TcaThreshold tcaThreshold : tcaItem.getTcaThresholds()) {
-                ObjectNode tcaNode = (ObjectNode) refProp.getJsonTemplate("tca.thresholds.template", service);
-                tcaNode.put("closedLoopControlName", modelProperties.getControlNameAndPolicyUniqueId());
-                tcaNode.put("fieldPath", tcaThreshold.getFieldPath());
-                tcaNode.put("thresholdValue", tcaThreshold.getThreshold());
-                tcaNode.put("direction", tcaThreshold.getOperator());
-                tcaNode.put("closedLoopEventStatus", tcaThreshold.getClosedLoopEventStatus());
+                JsonObject tcaNode = refProp.getJsonTemplate("tca.thresholds.template", service).getAsJsonObject();
+                tcaNode.addProperty("closedLoopControlName", modelProperties.getControlNameAndPolicyUniqueId());
+                tcaNode.addProperty("fieldPath", tcaThreshold.getFieldPath());
+                tcaNode.addProperty("thresholdValue", tcaThreshold.getThreshold());
+                tcaNode.addProperty("direction", tcaThreshold.getOperator());
+                tcaNode.addProperty("closedLoopEventStatus", tcaThreshold.getClosedLoopEventStatus());
                 tcaNodes.add(tcaNode);
             }
         } catch (IOException e) {
@@ -187,7 +185,7 @@ public class TcaRequestFormatter {
      */
     public static String updatedBlueprintWithConfiguration(ClampProperties refProp, ModelProperties modelProperties,
             String yamlValue) {
-        String jsonPolicy = ((ObjectNode) createPolicyContent(refProp, modelProperties, null, null, null)).toString();
+        String jsonPolicy = JsonUtils.GSON.toJson(createPolicyContent(refProp, modelProperties, null, null, null));
         logger.info("Yaml that will be updated:" + yamlValue);
         Yaml yaml = new Yaml();
         Map<String, Object> loadedYaml = (Map<String, Object>) yaml.load(yamlValue);
diff --git a/src/main/java/org/onap/clamp/clds/config/ClampProperties.java b/src/main/java/org/onap/clamp/clds/config/ClampProperties.java
index 9acad94ab..4f1e8a281 100644
--- a/src/main/java/org/onap/clamp/clds/config/ClampProperties.java
+++ b/src/main/java/org/onap/clamp/clds/config/ClampProperties.java
@@ -23,16 +23,16 @@
 
 package org.onap.clamp.clds.config;
 
-import com.fasterxml.jackson.databind.JsonNode;
 import com.google.common.base.Splitter;
 
+import com.google.gson.JsonElement;
 import java.io.IOException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.util.List;
 
 import org.apache.commons.io.IOUtils;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
 import org.springframework.core.env.Environment;
@@ -89,10 +89,10 @@ public class ClampProperties {
      * @throws IOException
      *         In case of issues with the JSON parser
      */
-    public JsonNode getJsonTemplate(String key) throws IOException {
+    public JsonElement getJsonTemplate(String key) throws IOException {
         String fileReference = getStringValue(key);
         return (fileReference != null)
-            ? JacksonUtils.getObjectMapperInstance().readValue(getFileContentFromPath(fileReference), JsonNode.class)
+            ? JsonUtils.GSON.fromJson(getFileContentFromPath(fileReference), JsonElement.class)
             : null;
     }
 
@@ -109,10 +109,10 @@ public class ClampProperties {
      * @throws IOException
      *         In case of issues with the JSON parser
      */
-    public JsonNode getJsonTemplate(String key1, String key2) throws IOException {
+    public JsonElement getJsonTemplate(String key1, String key2) throws IOException {
         String fileReference = getStringValue(key1, key2);
         return (fileReference != null)
-            ? JacksonUtils.getObjectMapperInstance().readValue(getFileContentFromPath(fileReference), JsonNode.class)
+            ? JsonUtils.GSON.fromJson(getFileContentFromPath(fileReference), JsonElement.class)
             : null;
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/config/CldsUserJsonDecoder.java b/src/main/java/org/onap/clamp/clds/config/CldsUserJsonDecoder.java
index 0b873335f..d1beb956d 100644
--- a/src/main/java/org/onap/clamp/clds/config/CldsUserJsonDecoder.java
+++ b/src/main/java/org/onap/clamp/clds/config/CldsUserJsonDecoder.java
@@ -23,14 +23,18 @@
 
 package org.onap.clamp.clds.config;
 
+import com.google.gson.JsonParseException;
+import com.google.gson.reflect.TypeToken;
 import java.io.IOException;
 import java.io.InputStream;
+import java.lang.reflect.Type;
 import java.nio.charset.StandardCharsets;
 
+import java.util.List;
 import org.apache.commons.io.IOUtils;
 import org.onap.clamp.clds.exception.CldsUsersException;
 import org.onap.clamp.clds.service.CldsUser;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 
 public class CldsUserJsonDecoder {
 
@@ -55,8 +59,8 @@ public class CldsUserJsonDecoder {
         try {
             // the ObjectMapper readValue method closes the stream no need to do
             // it
-            return JacksonUtils.getObjectMapperInstance().readValue(cldsUsersString, CldsUser[].class);
-        } catch (IOException e) {
+            return JsonUtils.GSON.fromJson(cldsUsersString, CldsUser[].class);
+        } catch (JsonParseException e) {
             throw new CldsUsersException("Exception occurred during the decoding of the clds-users.json", e);
         }
     }
diff --git a/src/main/java/org/onap/clamp/clds/config/sdc/BlueprintParserMappingConfiguration.java b/src/main/java/org/onap/clamp/clds/config/sdc/BlueprintParserMappingConfiguration.java
index 2cab17b3a..2f0e698c8 100644
--- a/src/main/java/org/onap/clamp/clds/config/sdc/BlueprintParserMappingConfiguration.java
+++ b/src/main/java/org/onap/clamp/clds/config/sdc/BlueprintParserMappingConfiguration.java
@@ -23,13 +23,16 @@
 
 package org.onap.clamp.clds.config.sdc;
 
-import com.fasterxml.jackson.core.type.TypeReference;
 
-import java.io.IOException;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.reflect.TypeToken;
 import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.lang.reflect.Type;
+import java.nio.charset.StandardCharsets;
 import java.util.List;
-
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * This class is used to decode the configuration found in
@@ -39,6 +42,8 @@ import org.onap.clamp.clds.util.JacksonUtils;
  */
 public class BlueprintParserMappingConfiguration {
 
+    private static final Type BLUEPRINT_MAP_CONF_TYPE = new TypeToken<List<BlueprintParserMappingConfiguration>>() {
+    }.getType();
     private String blueprintKey;
     private boolean dcaeDeployable;
     private BlueprintParserFilesConfiguration files;
@@ -63,9 +68,7 @@ public class BlueprintParserMappingConfiguration {
         return dcaeDeployable;
     }
 
-    public static List<BlueprintParserMappingConfiguration> createFromJson(InputStream json) throws IOException {
-        TypeReference<List<BlueprintParserMappingConfiguration>> mapType = new TypeReference<List<BlueprintParserMappingConfiguration>>() {
-        };
-        return JacksonUtils.getObjectMapperInstance().readValue(json, mapType);
+    public static List<BlueprintParserMappingConfiguration> createFromJson(InputStream json) {
+        return JsonUtils.GSON.fromJson(new InputStreamReader(json, StandardCharsets.UTF_8), BLUEPRINT_MAP_CONF_TYPE);
     }
 }
diff --git a/src/main/java/org/onap/clamp/clds/config/sdc/SdcControllersConfiguration.java b/src/main/java/org/onap/clamp/clds/config/sdc/SdcControllersConfiguration.java
index 0f75d46e7..b21c75f2a 100644
--- a/src/main/java/org/onap/clamp/clds/config/sdc/SdcControllersConfiguration.java
+++ b/src/main/java/org/onap/clamp/clds/config/sdc/SdcControllersConfiguration.java
@@ -25,16 +25,18 @@ package org.onap.clamp.clds.config.sdc;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonObject;
 import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.Map;
 
 import javax.annotation.PostConstruct;
 
 import org.onap.clamp.clds.exception.sdc.controller.SdcParametersException;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.ApplicationContext;
@@ -59,13 +61,13 @@ public class SdcControllersConfiguration {
     /**
      * The root of the JSON.
      */
-    private JsonNode jsonRootNode;
+    private JsonObject jsonRootNode;
 
     @PostConstruct
     public void loadConfiguration() throws IOException {
         Resource resource = appContext.getResource(sdcControllerFile);
         // Try to load json tree
-        jsonRootNode = JacksonUtils.getObjectMapperInstance().readValue(resource.getInputStream(), JsonNode.class);
+        jsonRootNode = JsonUtils.GSON.fromJson(new InputStreamReader(resource.getInputStream(), StandardCharsets.UTF_8), JsonObject.class);
     }
 
     public SdcSingleControllerConfiguration getSdcSingleControllerConfiguration(String controllerName) {
@@ -80,8 +82,9 @@ public class SdcControllersConfiguration {
     public Map<String, SdcSingleControllerConfiguration> getAllDefinedControllers() {
         Map<String, SdcSingleControllerConfiguration> result = new HashMap<>();
         if (jsonRootNode.get(CONTROLLER_SUBTREE_KEY) != null) {
-            jsonRootNode.get(CONTROLLER_SUBTREE_KEY).fields().forEachRemaining(entry -> result.put(entry.getKey(),
-                    new SdcSingleControllerConfiguration(entry.getValue(), entry.getKey())));
+            jsonRootNode.get(CONTROLLER_SUBTREE_KEY).getAsJsonObject().entrySet().forEach(
+                entry -> result.put(entry.getKey(),
+                    new SdcSingleControllerConfiguration(entry.getValue().getAsJsonObject(), entry.getKey())));
         } else {
             throw new SdcParametersException(
                     CONTROLLER_SUBTREE_KEY + " key not found in the file: " + sdcControllerFile);
diff --git a/src/main/java/org/onap/clamp/clds/config/sdc/SdcSingleControllerConfiguration.java b/src/main/java/org/onap/clamp/clds/config/sdc/SdcSingleControllerConfiguration.java
index ca756aa09..564e01f18 100644
--- a/src/main/java/org/onap/clamp/clds/config/sdc/SdcSingleControllerConfiguration.java
+++ b/src/main/java/org/onap/clamp/clds/config/sdc/SdcSingleControllerConfiguration.java
@@ -25,8 +25,8 @@ package org.onap.clamp.clds.config.sdc;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonObject;
 import java.security.GeneralSecurityException;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -52,7 +52,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
     /**
      * The root of the JSON.
      */
-    private JsonNode jsonRootNode;
+    private JsonObject jsonRootNode;
     // All keys that can be present in the JSON
     public static final String CONSUMER_GROUP_ATTRIBUTE_NAME = "consumerGroup";
     public static final String CONSUMER_ID_ATTRIBUTE_NAME = "consumerId";
@@ -90,12 +90,12 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
      * This constructor builds a SdcSingleControllerConfiguration from the
      * corresponding json.
      * 
-     * @param jsonRootNode
+     * @param jsonNode
      *            The JSON node
      * @param controllerName
      *            The controller name that must appear in the JSON
      */
-    public SdcSingleControllerConfiguration(JsonNode jsonNode, String controllerName) {
+    public SdcSingleControllerConfiguration(JsonObject jsonNode, String controllerName) {
         jsonRootNode = jsonNode;
         setSdcControllerName(controllerName);
         testAllRequiredParameters();
@@ -113,7 +113,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
 
     private String getStringConfig(String key) {
         if (jsonRootNode != null && jsonRootNode.get(key) != null) {
-            String config = jsonRootNode.get(key).asText();
+            String config = jsonRootNode.get(key).getAsString();
             return config.isEmpty() ? null : config;
         }
         return null;
@@ -121,7 +121,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
 
     private Integer getIntConfig(String key) {
         if (jsonRootNode != null && jsonRootNode.get(key) != null) {
-            return jsonRootNode.get(key).asInt();
+            return jsonRootNode.get(key).getAsInt();
         } else {
             return 0;
         }
@@ -129,8 +129,8 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
 
     private String getEncryptedStringConfig(String key) throws GeneralSecurityException, DecoderException {
         if (jsonRootNode != null && jsonRootNode.get(key) != null) {
-            return jsonRootNode.get(key).asText().isEmpty() ? null
-                    : CryptoUtils.decrypt(jsonRootNode.get(key).asText());
+            return jsonRootNode.get(key).getAsString().isEmpty() ? null
+                    : CryptoUtils.decrypt(jsonRootNode.get(key).getAsString());
         }
         return null;
     }
@@ -143,7 +143,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
     @Override
     public String getConsumerGroup() {
         if (jsonRootNode != null && jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME) != null) {
-            String config = jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME).asText();
+            String config = jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME).getAsString();
             return "NULL".equals(config) || config.isEmpty() ? null : config;
         }
         return null;
@@ -198,8 +198,8 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
 
     @Override
     public boolean activateServerTLSAuth() {
-        if (jsonRootNode != null && jsonRootNode.get(ACTIVATE_SERVER_TLS_AUTH) != null) {
-            return jsonRootNode.get(ACTIVATE_SERVER_TLS_AUTH).asBoolean(false);
+        if (jsonRootNode != null && jsonRootNode.get(ACTIVATE_SERVER_TLS_AUTH) != null && jsonRootNode.get(ACTIVATE_SERVER_TLS_AUTH).isJsonPrimitive()) {
+            return jsonRootNode.get(ACTIVATE_SERVER_TLS_AUTH).getAsBoolean();
         } else {
             return false;
         }
@@ -231,7 +231,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
             throw new SdcParametersException("Json is null for controller " + this.getSdcControllerName());
         }
         if (this.getConsumerGroup() == null && (jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME) == null
-                || !"NULL".equals(jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME).asText()))) {
+                || !"NULL".equals(jsonRootNode.get(CONSUMER_GROUP_ATTRIBUTE_NAME).getAsString()))) {
             throw new SdcParametersException(CONSUMER_GROUP_ATTRIBUTE_NAME + errorMessageKeyNotFound);
         }
         if (this.getConsumerID() == null || this.getConsumerID().isEmpty()) {
@@ -277,7 +277,7 @@ public class SdcSingleControllerConfiguration implements IConfiguration {
     public List<String> getMsgBusAddress() {
         List<String> addressesList = new ArrayList<>();
         if (jsonRootNode != null && jsonRootNode.get(MESSAGE_BUS_ADDRESSES) != null) {
-            jsonRootNode.get(MESSAGE_BUS_ADDRESSES).forEach(k -> addressesList.add(k.asText()));
+            jsonRootNode.get(MESSAGE_BUS_ADDRESSES).getAsJsonArray().forEach(k -> addressesList.add(k.getAsString()));
             return addressesList;
         } else {
             return addressesList;
diff --git a/src/main/java/org/onap/clamp/clds/model/CldsModelInstance.java b/src/main/java/org/onap/clamp/clds/model/CldsModelInstance.java
index 75801ae2b..082bfe335 100644
--- a/src/main/java/org/onap/clamp/clds/model/CldsModelInstance.java
+++ b/src/main/java/org/onap/clamp/clds/model/CldsModelInstance.java
@@ -23,9 +23,6 @@
 
 package org.onap.clamp.clds.model;
 
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-
-@JsonIgnoreProperties(ignoreUnknown = true)
 public class CldsModelInstance {
 
     private String modelInstanceId;
diff --git a/src/main/java/org/onap/clamp/clds/model/actions/ActionsHandler.java b/src/main/java/org/onap/clamp/clds/model/actions/ActionsHandler.java
index 1c54dae01..bafe48d9a 100644
--- a/src/main/java/org/onap/clamp/clds/model/actions/ActionsHandler.java
+++ b/src/main/java/org/onap/clamp/clds/model/actions/ActionsHandler.java
@@ -24,14 +24,13 @@
 package org.onap.clamp.clds.model.actions;
 
 import com.att.eelf.configuration.EELFLogger;
-import com.fasterxml.jackson.databind.JsonNode;
-
-import java.io.IOException;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
 import java.util.Arrays;
 import java.util.List;
-
 import org.onap.clamp.clds.model.CldsEvent;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Interface for actions that the user can do according to the last event.
@@ -44,7 +43,7 @@ public interface ActionsHandler {
         SIMPLE_MODEL("simpleModel"), POLICY_MODEL("policyModel");
         private final String type;
 
-        private ModelType(String type) {
+        ModelType(String type) {
             this.type = type;
         }
 
@@ -53,7 +52,7 @@ public interface ActionsHandler {
         }
     }
 
-    public EELFLogger getLogger();
+    EELFLogger getLogger();
 
     /**
      * This method determines a list of actions that the user can do according to
@@ -155,13 +154,15 @@ public interface ActionsHandler {
         boolean result = false;
         try {
             if (propText != null) {
-                JsonNode modelJson = JacksonUtils.getObjectMapperInstance().readTree(propText);
-                JsonNode modelJsonOfType = modelJson.get(key.getType());
-                if (modelJsonOfType != null && modelJsonOfType.asBoolean()) {
+                JsonObject modelJson = JsonUtils.GSON.fromJson(propText, JsonObject.class);
+                JsonElement modelJsonOfType = modelJson.get(key.getType());
+                if (modelJsonOfType != null
+                    && modelJsonOfType.isJsonPrimitive()
+                    && modelJsonOfType.getAsJsonPrimitive().getAsBoolean()) {
                     result = true;
                 }
             }
-        } catch (IOException e) {
+        } catch (JsonParseException e) {
             getLogger().error("Error while parsing propText json", e);
         }
         return result;
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/AbstractModelElement.java b/src/main/java/org/onap/clamp/clds/model/properties/AbstractModelElement.java
index 571e5b1bc..8e8debe83 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/AbstractModelElement.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/AbstractModelElement.java
@@ -25,15 +25,12 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 
 /**
- * Provide base ModelElement functionality. Perform base parsing of properties
- * for a ModelElement (such as, VesCollector, Policy, Tca, Holmes, ...)
+ * Provide base ModelElement functionality. Perform base parsing of properties for a ModelElement (such as,
+ * VesCollector, Policy, Tca, Holmes, ...)
  */
 public abstract class AbstractModelElement {
 
@@ -43,17 +40,14 @@ public abstract class AbstractModelElement {
     private final ModelBpmn modelBpmn;
     private final String id;
     protected String topicPublishes;
-    protected final JsonNode modelElementJsonNode;
+    protected final JsonElement modelElementJsonNode;
     private boolean isFound;
     private final ModelProperties modelProp;
-    private static final String LOG_ELEMENT_NOT_FOUND = "Value '{}' for key 'name' not found in JSON";
-    private static final String LOG_ELEMENT_NOT_FOUND_IN_JSON = "Value '{}' for key 'name' not found in JSON {}";
 
     /**
-     * Perform base parsing of properties for a ModelElement (such as, VesCollector,
-     * Policy and Tca)
+     * Perform base parsing of properties for a ModelElement (such as, VesCollector, Policy and Tca)
      */
-    protected AbstractModelElement(String type, ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) {
+    protected AbstractModelElement(String type, ModelProperties modelProp, ModelBpmn modelBpmn, JsonObject modelJson) {
         this.type = type;
         this.modelProp = modelProp;
         this.modelBpmn = modelBpmn;
@@ -69,163 +63,6 @@ public abstract class AbstractModelElement {
         return topicPublishes;
     }
 
-    /**
-     * Return the value field of the json node element that has a name field equals
-     * to the given name.
-     */
-    public static String getValueByName(JsonNode nodeIn, String name) {
-        String value = null;
-        if (nodeIn != null) {
-            for (JsonNode node : nodeIn) {
-                if (node.path("name").asText().equals(name)) {
-                    JsonNode vnode = node.path("value");
-                    if (vnode.isArray()) {
-                        // if array, assume value is in first element
-                        value = vnode.path(0).asText();
-                    } else {
-                        // otherwise, just return text
-                        value = vnode.asText();
-                    }
-                }
-            }
-        }
-        if (value == null || value.length() == 0) {
-            logger.warn(LOG_ELEMENT_NOT_FOUND, name);
-        } else {
-            logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, nodeIn.toString());
-        }
-        return value;
-    }
-
-    /**
-     * Return the Json value field of the json node element that has a name field
-     * equals to the given name.
-     */
-    public static JsonNode getJsonNodeByName(JsonNode nodeIn, String name) {
-        JsonNode vnode = null;
-        if (nodeIn != null) {
-            for (JsonNode node : nodeIn) {
-                if (node.path("name").asText().equals(name)) {
-                    vnode = node.path("value");
-                }
-            }
-        }
-        if (vnode == null) {
-            logger.warn(LOG_ELEMENT_NOT_FOUND, name);
-        } else {
-            logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, nodeIn.toString());
-        }
-        return vnode;
-    }
-
-    /**
-     * Return the value field of the json node element that has a name field that
-     * equals the given name.
-     */
-    public static String getNodeValueByName(JsonNode nodeIn, String name) {
-        String value = null;
-        if (nodeIn != null) {
-            value = nodeIn.path(name).asText();
-        }
-        if (value == null || value.length() == 0) {
-            logger.warn(LOG_ELEMENT_NOT_FOUND, name);
-        } else {
-            logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, nodeIn.toString());
-        }
-        return value;
-    }
-
-    /**
-     * Return the value field of the json node element that has a name field that
-     * equals the given name.
-     */
-    public static List<String> getNodeValuesByName(JsonNode nodeIn, String name) {
-        List<String> values = new ArrayList<>();
-        if (nodeIn != null) {
-            for (JsonNode node : nodeIn) {
-                if (node.path("name").asText().equals(name)) {
-                    JsonNode vnode = node.path("value");
-                    if (vnode.isArray()) {
-                        // if array, assume value is in first element
-                        values.add(vnode.path(0).asText());
-                    } else {
-                        // otherwise, just return text
-                        values.add(vnode.asText());
-                    }
-                }
-            }
-        }
-        return values;
-    }
-
-    /**
-     * Return the int value field of the json node element that has a name field
-     * equals to the given name.
-     */
-    public static Integer getIntValueByName(JsonNode nodeIn, String name) {
-        String value = getValueByName(nodeIn, name);
-        return Integer.valueOf(value);
-    }
-
-    /**
-     * Return an array of values for the field of the json node element that has a
-     * name field equals to the given name.
-     */
-    public static List<String> getValuesByName(JsonNode nodeIn, String name) {
-        List<String> values = null;
-        if (nodeIn != null) {
-            for (JsonNode node : nodeIn) {
-                if (node.path("name").asText().equals(name)) {
-                    values = getValuesList(node);
-                }
-            }
-        }
-        if (values == null || values.isEmpty()) {
-            logger.warn(LOG_ELEMENT_NOT_FOUND, name);
-        } else {
-            logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, nodeIn.toString());
-        }
-        return values;
-    }
-
-    /**
-     * Return an array of String values.
-     */
-    public static List<String> getValuesList(JsonNode nodeIn) {
-        ArrayList<String> al = new ArrayList<>();
-        if (nodeIn != null) {
-            Iterator<JsonNode> itr = nodeIn.path("value").elements();
-            while (itr.hasNext()) {
-                JsonNode node = itr.next();
-                al.add(node.asText());
-            }
-        }
-        return al;
-    }
-
-    /**
-     * Return the value field of the json node element that has a name field equals
-     * to the given name.
-     */
-    public String getValueByName(String name) {
-        return getValueByName(modelElementJsonNode, name);
-    }
-
-    /**
-     * Return the int value field of the json node element that has a name field
-     * equals to the given name.
-     */
-    public Integer getIntValueByName(String name) {
-        return getIntValueByName(modelElementJsonNode, name);
-    }
-
-    /**
-     * Return an array of values for the field of the json node element that has a
-     * name field equals to the given name.
-     */
-    public List<String> getValuesByName(String name) {
-        return getValuesByName(modelElementJsonNode, name);
-    }
 
     /**
      * @return the id
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/Global.java b/src/main/java/org/onap/clamp/clds/model/properties/Global.java
index e86740726..66491489a 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/Global.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/Global.java
@@ -25,9 +25,11 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import java.util.List;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse global json properties.
@@ -45,7 +47,7 @@ public class Global {
     private String actionSet;
     private List<String> resourceVf;
     private List<String> resourceVfc;
-    private JsonNode deployParameters;
+    private JsonObject deployParameters;
     private List<String> location;
     private String vnfScope;
 
@@ -54,15 +56,15 @@ public class Global {
      *
      * @param modelJson
      */
-    public Global(JsonNode modelJson) {
-        JsonNode globalNode = modelJson.get("global");
-        service = AbstractModelElement.getValueByName(globalNode, "service");
-        actionSet = AbstractModelElement.getValueByName(globalNode, "actionSet");
-        resourceVf = AbstractModelElement.getValuesByName(globalNode, "vf");
-        resourceVfc = AbstractModelElement.getValuesByName(globalNode, "vfc");
-        deployParameters = AbstractModelElement.getJsonNodeByName(globalNode, "deployParameters");
-        location = AbstractModelElement.getValuesByName(globalNode, "location");
-        vnfScope = AbstractModelElement.getValueByName(globalNode, "vnf");
+    public Global(JsonObject modelJson) {
+        JsonElement globalNode = modelJson.get("global");
+        service = JsonUtils.getStringValueByName(globalNode, "service");
+        actionSet = JsonUtils.getStringValueByName(globalNode, "actionSet");
+        resourceVf = JsonUtils.getStringValuesByName(globalNode, "vf");
+        resourceVfc = JsonUtils.getStringValuesByName(globalNode, "vfc");
+        deployParameters = JsonUtils.getJsonObjectByName(globalNode, "deployParameters");
+        location = JsonUtils.getStringValuesByName(globalNode, "location");
+        vnfScope = JsonUtils.getStringValueByName(globalNode, "vnf");
     }
 
     /**
@@ -136,11 +138,11 @@ public class Global {
         this.location = location;
     }
 
-    public JsonNode getDeployParameters() {
+    public JsonObject getDeployParameters() {
         return deployParameters;
     }
 
-    public void setDeployParameters(JsonNode deployParameters) {
+    public void setDeployParameters(JsonObject deployParameters) {
         this.deployParameters = deployParameters;
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/Holmes.java b/src/main/java/org/onap/clamp/clds/model/properties/Holmes.java
index 530e2db95..b0607e914 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/Holmes.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/Holmes.java
@@ -23,7 +23,8 @@
 
 package org.onap.clamp.clds.model.properties;
 
-import com.fasterxml.jackson.databind.JsonNode;
+import com.google.gson.JsonObject;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse Holmes bpmn parameters json properties.
@@ -49,11 +50,11 @@ public class Holmes extends AbstractModelElement {
      * @param modelBpmn
      * @param modelJson
      */
-    public Holmes(ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) {
+    public Holmes(ModelProperties modelProp, ModelBpmn modelBpmn, JsonObject modelJson) {
         super(TYPE_HOLMES, modelProp, modelBpmn, modelJson);
 
-        correlationLogic = this.getValueByName("correlationalLogic");
-        configPolicyName = this.getValueByName("configPolicyName");
+        correlationLogic = JsonUtils.getStringValueByName(modelElementJsonNode, "correlationalLogic");
+        configPolicyName = JsonUtils.getStringValueByName(modelElementJsonNode, "configPolicyName");
     }
 
     public static final String getType() {
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/ModelBpmn.java b/src/main/java/org/onap/clamp/clds/model/properties/ModelBpmn.java
index dbd5d8a4f..248a52fcb 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/ModelBpmn.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/ModelBpmn.java
@@ -25,11 +25,11 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.node.ArrayNode;
-import com.fasterxml.jackson.databind.node.ObjectNode;
 
-import java.io.IOException;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -39,7 +39,7 @@ import java.util.Map.Entry;
 
 import org.onap.clamp.clds.exception.ModelBpmnException;
 import org.onap.clamp.clds.service.CldsService;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse Model BPMN properties.
@@ -66,22 +66,22 @@ public class ModelBpmn {
     public static ModelBpmn create(String modelBpmnPropText) {
         try {
             ModelBpmn modelBpmn = new ModelBpmn();
-            ObjectNode root = JacksonUtils.getObjectMapperInstance().readValue(modelBpmnPropText, ObjectNode.class);
+            JsonObject root = JsonUtils.GSON.fromJson(modelBpmnPropText, JsonObject.class);
             // iterate over each entry like:
             // "Policy":[{"id":"Policy","from":"StartEvent_1"}]
-            Iterator<Entry<String, JsonNode>> entryItr = root.fields();
+            Iterator<Entry<String, JsonElement>> entryItr = root.entrySet().iterator();
             List<String> bpmnElementIdList = new ArrayList<>();
             while (entryItr.hasNext()) {
                 // process the entry
-                Entry<String, JsonNode> entry = entryItr.next();
+                Entry<String, JsonElement> entry = entryItr.next();
                 String type = entry.getKey();
-                ArrayNode arrayNode = (ArrayNode) entry.getValue();
+                JsonArray arrayNode = entry.getValue().getAsJsonArray();
                 // process each id/from object, like:
                 // {"id":"Policy","from":"StartEvent_1"}
-                for (JsonNode anArrayNode : arrayNode) {
-                    ObjectNode node = (ObjectNode) anArrayNode;
-                    String id = node.get("id").asText();
-                    String fromId = node.get("from").asText();
+                for (JsonElement anArrayNode : arrayNode) {
+                    JsonObject node = anArrayNode.getAsJsonObject();
+                    String id = node.get("id").getAsString();
+                    String fromId = node.get("from").getAsString();
                     ModelBpmnEntry modelBpmnEntry = new ModelBpmnEntry(type, id, fromId);
                     modelBpmn.addEntry(modelBpmnEntry);
                     bpmnElementIdList.add(id);
@@ -89,7 +89,7 @@ public class ModelBpmn {
                 modelBpmn.setBpmnElementIds(bpmnElementIdList);
             }
             return modelBpmn;
-        } catch (IOException e) {
+        } catch (JsonParseException e) {
             throw new ModelBpmnException("Exception occurred during the decoding of the bpmn JSON", e);
         }
     }
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/ModelProperties.java b/src/main/java/org/onap/clamp/clds/model/properties/ModelProperties.java
index 3d7bbcc3a..61eeac101 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/ModelProperties.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/ModelProperties.java
@@ -25,23 +25,21 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-
-import java.io.IOException;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
 import java.lang.reflect.InvocationTargetException;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
-
 import org.apache.camel.Exchange;
 import org.onap.clamp.clds.client.req.policy.PolicyClient;
 import org.onap.clamp.clds.config.ClampProperties;
 import org.onap.clamp.clds.exception.ModelBpmnException;
 import org.onap.clamp.clds.model.CldsModel;
 import org.onap.clamp.clds.service.CldsService;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse model properties.
@@ -51,7 +49,7 @@ public class ModelProperties {
     protected static final EELFLogger logger = EELFManager.getInstance().getLogger(CldsService.class);
     protected static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();
     private ModelBpmn modelBpmn;
-    private JsonNode modelJson;
+    private JsonObject modelJson;
     private final String modelName;
     private final String controlName;
     private final String actionCd;
@@ -65,6 +63,7 @@ public class ModelProperties {
     public static final String POLICY_GUARD_SUFFIX = "_Guard_";
     private static final Object lock = new Object();
     private static Map<Class<? extends AbstractModelElement>, String> modelElementClasses = new ConcurrentHashMap<>();
+
     static {
         synchronized (lock) {
             modelElementClasses.put(Policy.class, Policy.getType());
@@ -99,9 +98,9 @@ public class ModelProperties {
             this.actionCd = actionCd;
             this.testOnly = isATest;
             modelBpmn = ModelBpmn.create(modelBpmnText);
-            modelJson = JacksonUtils.getObjectMapperInstance().readTree(modelPropText);
+            modelJson = JsonUtils.GSON.fromJson(modelPropText, JsonObject.class);
             instantiateMissingModelElements();
-        } catch (IOException e) {
+        } catch (JsonParseException e) {
             throw new ModelBpmnException("Exception occurred when trying to decode the BPMN Properties JSON", e);
         }
     }
@@ -112,7 +111,7 @@ public class ModelProperties {
      * after instantiation of this ModelProperties, we need to build the missing
      * ModelElement instances.
      */
-    private final void instantiateMissingModelElements() {
+    private void instantiateMissingModelElements() {
         if (modelElementClasses.size() != modelElements.size()) {
             Set<String> missingTypes = new HashSet<>(modelElementClasses.values());
             missingTypes.removeAll(modelElements.keySet());
@@ -124,11 +123,11 @@ public class ModelProperties {
                 .forEach(entry -> {
                     try {
                         modelElements.put(entry.getValue(),
-                            (entry.getKey().getConstructor(ModelProperties.class, ModelBpmn.class, JsonNode.class)
+                            (entry.getKey().getConstructor(ModelProperties.class, ModelBpmn.class, JsonObject.class)
                                 .newInstance(this, modelBpmn, modelJson)));
                     } catch (InstantiationException | NoSuchMethodException | IllegalAccessException
                         | InvocationTargetException e) {
-                        logger.warn("Unable to instantiate a ModelElement, exception follows: ", e);
+                        logger.warn("Unable to instantiate a ModelElement "+ entry.getValue()+", exception follows: ", e);
                     }
                 });
         }
@@ -143,10 +142,10 @@ public class ModelProperties {
     public static String getVf(CldsModel model) {
         List<String> vfs = null;
         try {
-            JsonNode modelJson = JacksonUtils.getObjectMapperInstance().readTree(model.getPropText());
+            JsonObject modelJson = JsonUtils.GSON.fromJson(model.getPropText(), JsonObject.class);
             Global global = new Global(modelJson);
             vfs = global.getResourceVf();
-        } catch (IOException e) {
+        } catch (JsonParseException e) {
             logger.warn("no VF found", e);
         }
         String vf = null;
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/Policy.java b/src/main/java/org/onap/clamp/clds/model/properties/Policy.java
index 501eb8077..059d73293 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/Policy.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/Policy.java
@@ -25,12 +25,14 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Map.Entry;
 
 /**
  * Parse Policy json properties.
@@ -65,15 +67,15 @@ public class Policy extends AbstractModelElement {
      * @param modelJson
      * @throws IOException
      */
-    public Policy(ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) throws IOException {
+    public Policy(ModelProperties modelProp, ModelBpmn modelBpmn, JsonObject modelJson) throws IOException {
         super(TYPE_POLICY, modelProp, modelBpmn, modelJson);
 
         // process policies
         if (modelElementJsonNode != null) {
-            Iterator<JsonNode> itr = modelElementJsonNode.elements();
+            Iterator<Entry<String, JsonElement>> itr = modelElementJsonNode.getAsJsonObject().entrySet().iterator();
             policyChains = new ArrayList<>();
             while (itr.hasNext()) {
-                policyChains.add(new PolicyChain(itr.next()));
+                policyChains.add(new PolicyChain(itr.next().getValue()));
             }
         }
     }
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/PolicyChain.java b/src/main/java/org/onap/clamp/clds/model/properties/PolicyChain.java
index cf24c7810..f29ba160b 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/PolicyChain.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/PolicyChain.java
@@ -25,12 +25,13 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse Policy json properties.
@@ -66,20 +67,21 @@ public class PolicyChain {
     private List<PolicyItem>          policyItems;
     private String                    policyType;
 
-    public PolicyChain(JsonNode node) throws IOException {
-
-        policyId = AbstractModelElement.getValueByName(node, "pid");
-        timeout = AbstractModelElement.getIntValueByName(node, "timeout");
-        policyType = AbstractModelElement.getValueByName(node, "policyType");
+    public PolicyChain(JsonElement node) throws IOException {
+        if (node != null && node.isJsonArray() && node.getAsJsonArray().size() > 0) {
+            JsonArray operationalPolicyParameters = node.getAsJsonArray();
+            policyId = JsonUtils.getStringValueByName(node, "pid");
+            timeout = JsonUtils.getIntValueByName(node, "timeout");
+            policyType = JsonUtils.getStringValueByName(node, "policyType");
 
-        if(node != null && node.size() > 0) {
-            JsonNode policyNode = node.get(node.size() - 1).get("policyConfigurations");
-            if(policyNode != null) {
-                Iterator<JsonNode> itr = policyNode.elements();
-                policyItems = new ArrayList<>();
-                while (itr.hasNext()) {
-                    policyItems.add(new PolicyItem(itr.next()));
-                }
+            JsonArray policyConfigurations = operationalPolicyParameters.get(operationalPolicyParameters.size() - 1)
+                .getAsJsonObject()
+                .get("policyConfigurations")
+                .getAsJsonArray();
+            Iterator<JsonElement> itr = policyConfigurations.iterator();
+            policyItems = new ArrayList<>();
+            while (itr.hasNext()) {
+                policyItems.add(new PolicyItem(itr.next()));
 
             }
         }
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/PolicyItem.java b/src/main/java/org/onap/clamp/clds/model/properties/PolicyItem.java
index d6deddc68..bb57d5dc0 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/PolicyItem.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/PolicyItem.java
@@ -25,14 +25,14 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.core.type.TypeReference;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonElement;
+import com.google.gson.reflect.TypeToken;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.yaml.snakeyaml.Yaml;
 
 /**
@@ -86,51 +86,48 @@ public class PolicyItem implements Cloneable {
     /**
      * Parse Policy given json node.
      *
-     * @param node
+     * @param item
      * @throws IOException
      */
-    public PolicyItem(JsonNode node) throws IOException {
-        id = AbstractModelElement.getValueByName(node, "_id");
-        recipe = AbstractModelElement.getValueByName(node, "recipe");
-        maxRetries = AbstractModelElement.getIntValueByName(node, "maxRetries");
-        retryTimeLimit = AbstractModelElement.getIntValueByName(node, "retryTimeLimit");
-        parentPolicy = AbstractModelElement.getValueByName(node, "parentPolicy");
-        parentPolicyConditions = AbstractModelElement.getValuesByName(node, "parentPolicyConditions");
-        targetResourceId = AbstractModelElement.getValueByName(node, "targetResourceId");
+    public PolicyItem(JsonElement item) throws IOException {
+        id = JsonUtils.getStringValueByName(item, "_id");
+        recipe = JsonUtils.getStringValueByName(item, "recipe");
+        maxRetries = JsonUtils.getIntValueByName(item, "maxRetries");
+        retryTimeLimit = JsonUtils.getIntValueByName(item, "retryTimeLimit");
+        parentPolicy = JsonUtils.getStringValueByName(item, "parentPolicy");
+        parentPolicyConditions = JsonUtils.getStringValuesByName(item, "parentPolicyConditions");
+        targetResourceId = JsonUtils.getStringValueByName(item, "targetResourceId");
         if (targetResourceId != null && targetResourceId.isEmpty()) {
             this.setTargetResourceId(null);
         }
-        recipeInfo = AbstractModelElement.getValueByName(node, "recipeInfo");
-        recipeLevel = AbstractModelElement.getValueByName(node, "recipeLevel");
-        recipeInput = AbstractModelElement.getValueByName(node, "recipeInput");
-        String payload = AbstractModelElement.getValueByName(node, "recipePayload");
+        recipeInfo = JsonUtils.getStringValueByName(item, "recipeInfo");
+        recipeLevel = JsonUtils.getStringValueByName(item, "recipeLevel");
+        recipeInput = JsonUtils.getStringValueByName(item, "recipeInput");
+        String payload = JsonUtils.getStringValueByName(item, "recipePayload");
 
         if (payload != null && !payload.isEmpty()) {
             if (payload.trim().startsWith("{") && payload.trim().endsWith("}")) {
                 // Seems to be a JSON
-                recipePayload = JacksonUtils.getObjectMapperInstance().readValue(payload,
-                    new TypeReference<Map<String, String>>() {
-                    });
+                recipePayload = JsonUtils.GSON.fromJson(payload, new TypeToken<Map<String, String>>() {}.getType());
             } else {
                 // SHould be a YAML then
-                Yaml yaml = new Yaml();
-                recipePayload = (Map<String, String>) yaml.load(payload);
+                recipePayload = new Yaml().load(payload);
             }
         }
-        oapRop = AbstractModelElement.getValueByName(node, "oapRop");
-        oapLimit = AbstractModelElement.getValueByName(node, "oapLimit");
-        actor = AbstractModelElement.getValueByName(node, "actor");
-
-        enableGuardPolicy = AbstractModelElement.getValueByName(node, "enableGuardPolicy");
-        guardPolicyType = AbstractModelElement.getValueByName(node, "guardPolicyType");
-        guardTargets = AbstractModelElement.getValueByName(node, "guardTargets");
-        minGuard = AbstractModelElement.getValueByName(node, "minGuard");
-        maxGuard = AbstractModelElement.getValueByName(node, "maxGuard");
-        limitGuard = AbstractModelElement.getValueByName(node, "limitGuard");
-        timeUnitsGuard = AbstractModelElement.getValueByName(node, "timeUnitsGuard");
-        timeWindowGuard = AbstractModelElement.getValueByName(node, "timeWindowGuard");
-        guardActiveStart = AbstractModelElement.getValueByName(node, "guardActiveStart");
-        guardActiveEnd = AbstractModelElement.getValueByName(node, "guardActiveEnd");
+        oapRop = JsonUtils.getStringValueByName(item, "oapRop");
+        oapLimit = JsonUtils.getStringValueByName(item, "oapLimit");
+        actor = JsonUtils.getStringValueByName(item, "actor");
+
+        enableGuardPolicy = JsonUtils.getStringValueByName(item, "enableGuardPolicy");
+        guardPolicyType = JsonUtils.getStringValueByName(item, "guardPolicyType");
+        guardTargets = JsonUtils.getStringValueByName(item, "guardTargets");
+        minGuard = JsonUtils.getStringValueByName(item, "minGuard");
+        maxGuard = JsonUtils.getStringValueByName(item, "maxGuard");
+        limitGuard = JsonUtils.getStringValueByName(item, "limitGuard");
+        timeUnitsGuard = JsonUtils.getStringValueByName(item, "timeUnitsGuard");
+        timeWindowGuard = JsonUtils.getStringValueByName(item, "timeWindowGuard");
+        guardActiveStart = JsonUtils.getStringValueByName(item, "guardActiveStart");
+        guardActiveEnd = JsonUtils.getStringValueByName(item, "guardActiveEnd");
     }
 
     /**
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/Tca.java b/src/main/java/org/onap/clamp/clds/model/properties/Tca.java
index 7297ccbd4..50808229f 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/Tca.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/Tca.java
@@ -25,7 +25,10 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import java.util.Map.Entry;
+import java.util.Set;
 
 /**
  * Parse ONAP Tca json properties.
@@ -47,12 +50,14 @@ public class Tca extends AbstractModelElement {
      * @param modelBpmn
      * @param modelJson
      */
-    public Tca(ModelProperties modelProp, ModelBpmn modelBpmn, JsonNode modelJson) {
+    public Tca(ModelProperties modelProp, ModelBpmn modelBpmn, JsonObject modelJson) {
         super(TYPE_TCA, modelProp, modelBpmn, modelJson);
 
         // process Server_Configurations
         if (modelElementJsonNode != null) {
-            tcaItem = new TcaItem(modelElementJsonNode.elements().next());
+            //this is wrong assumption that there is only one property object
+            Set<Entry<String, JsonElement>> entries = modelElementJsonNode.getAsJsonObject().entrySet();
+            tcaItem = new TcaItem(entries.iterator().next().getValue());
         }
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/TcaItem.java b/src/main/java/org/onap/clamp/clds/model/properties/TcaItem.java
index 3a4ea7126..987b77658 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/TcaItem.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/TcaItem.java
@@ -25,11 +25,13 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
 
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import org.onap.clamp.clds.util.JsonUtils;
 
 /**
  * Parse ONAP Tca Item json properties.
@@ -50,21 +52,23 @@ public class TcaItem {
     /**
      * Parse Tca Item given json node
      *
-     * @param node
+     * @param tcaJson
      */
-    public TcaItem(JsonNode node) {
+    public TcaItem(JsonElement tcaJson) {
 
-        tcaName = AbstractModelElement.getValueByName(node, "tname");
-        tcaUuId = AbstractModelElement.getValueByName(node, "tuuid");
-        policyId = AbstractModelElement.getValueByName(node, "tcaPolId");
-        eventName = AbstractModelElement.getValueByName(node, "eventName");
-        controlLoopSchemaType = AbstractModelElement.getValueByName(node, "controlLoopSchemaType");
+        tcaName = JsonUtils.getStringValueByName(tcaJson, "tname");
+        tcaUuId = JsonUtils.getStringValueByName(tcaJson, "tuuid");
+        policyId = JsonUtils.getStringValueByName(tcaJson, "tcaPolId");
+        eventName = JsonUtils.getStringValueByName(tcaJson, "eventName");
+        controlLoopSchemaType = JsonUtils.getStringValueByName(tcaJson, "controlLoopSchemaType");
         // process service Configurations
-        JsonNode serviceConfigurationsNode = node.get(node.size() - 1).get("serviceConfigurations");
-        Iterator<JsonNode> itr = serviceConfigurationsNode.elements();
+        JsonArray tcaConfigurationArray = tcaJson.getAsJsonArray();
+        JsonArray serviceConfigurationsNode = tcaConfigurationArray.get(tcaConfigurationArray.size() - 1)
+            .getAsJsonObject().get("serviceConfigurations").getAsJsonArray();
+        Iterator<JsonElement> itr = serviceConfigurationsNode.iterator();
         tcaThresholds = new ArrayList<>();
         while (itr.hasNext()) {
-            tcaThresholds.add(new TcaThreshold(itr.next()));
+            tcaThresholds.add(new TcaThreshold(itr.next().getAsJsonArray()));
         }
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/model/properties/TcaThreshold.java b/src/main/java/org/onap/clamp/clds/model/properties/TcaThreshold.java
index 05b8ae355..0903d72f7 100644
--- a/src/main/java/org/onap/clamp/clds/model/properties/TcaThreshold.java
+++ b/src/main/java/org/onap/clamp/clds/model/properties/TcaThreshold.java
@@ -25,7 +25,7 @@ package org.onap.clamp.clds.model.properties;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
+import com.google.gson.JsonArray;
 
 /**
  * Parse ONAP Tca Threshold json properties.
@@ -44,21 +44,21 @@ public class TcaThreshold {
     /**
      * Parse Tca Threshhold given json node
      *
-     * @param node
+     * @param tcaTresholdConfiguration
      */
-    public TcaThreshold(JsonNode node) {
+    public TcaThreshold(JsonArray tcaTresholdConfiguration) {
 
-        if (node.get(0) != null) {
-            fieldPath = node.get(0).asText();
+        if (tcaTresholdConfiguration.get(0) != null) {
+            fieldPath = tcaTresholdConfiguration.get(0).getAsString();
         }
-        if (node.get(1) != null) {
-            operator = node.get(1).asText();
+        if (tcaTresholdConfiguration.get(1) != null) {
+            operator = tcaTresholdConfiguration.get(1).getAsString();
         }
-        if (node.get(2) != null) {
-            threshold = Integer.valueOf(node.get(2).asText());
+        if (tcaTresholdConfiguration.get(2) != null) {
+            threshold = Integer.valueOf(tcaTresholdConfiguration.get(2).getAsString());
         }
-        if (node.get(3) != null) {
-            closedLoopEventStatus = node.get(3).asText();
+        if (tcaTresholdConfiguration.get(3) != null) {
+            closedLoopEventStatus = tcaTresholdConfiguration.get(3).getAsString();
         }
     }
 
diff --git a/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
index 382c1d776..94cffbb7f 100644
--- a/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
+++ b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
@@ -25,8 +25,8 @@ package org.onap.clamp.clds.sdc.controller.installer;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.node.ObjectNode;
 
+import com.google.gson.JsonObject;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -51,7 +51,7 @@ import org.onap.clamp.clds.model.properties.ModelProperties;
 import org.onap.clamp.clds.service.CldsService;
 import org.onap.clamp.clds.service.CldsTemplateService;
 import org.onap.clamp.clds.transform.XslTransformer;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.ApplicationContext;
@@ -59,9 +59,8 @@ import org.springframework.transaction.annotation.Transactional;
 import org.yaml.snakeyaml.Yaml;
 
 /**
- * This class will be instantiated by spring config, and used by Sdc Controller.
- * There is no state kept by the bean. It's used to deploy the csar/notification
- * received from SDC in DB.
+ * This class will be instantiated by spring config, and used by Sdc Controller. There is no state kept by the bean.
+ * It's used to deploy the csar/notification received from SDC in DB.
  */
 public class CsarInstallerImpl implements CsarInstaller {
 
@@ -103,7 +102,7 @@ public class CsarInstallerImpl implements CsarInstaller {
         for (Entry<String, BlueprintArtifact> blueprint : csar.getMapOfBlueprints().entrySet()) {
             alreadyInstalled = alreadyInstalled
                 && (CldsModel.retrieve(cldsDao, buildModelName(csar, blueprint.getKey()), true).getId() != null) ? true
-                    : false;
+                : false;
         }
         return alreadyInstalled;
     }
@@ -165,22 +164,20 @@ public class CsarInstallerImpl implements CsarInstaller {
         return listConfig.get(0);
     }
 
-    private static String getAllBlueprintParametersInJson(BlueprintArtifact blueprintArtifact) {
-        ObjectNode node = JacksonUtils.getObjectMapperInstance().createObjectNode();
+    String getAllBlueprintParametersInJson(BlueprintArtifact blueprintArtifact) {
+        JsonObject node = new JsonObject();
         Yaml yaml = new Yaml();
         Map<String, Object> inputsNodes = ((Map<String, Object>) ((Map<String, Object>) yaml
             .load(blueprintArtifact.getDcaeBlueprint())).get("inputs"));
         inputsNodes.entrySet().stream().filter(e -> !e.getKey().contains("policy_id")).forEach(elem -> {
-            Object defaultNode = ((Map<String, Object>) elem.getValue()).get("default");
-            if (defaultNode != null && defaultNode instanceof String) {
-                node.put(elem.getKey(), (String) defaultNode);
-            } else if (defaultNode != null) {
-                node.putPOJO(elem.getKey(), defaultNode);
+            Object defaultValue = ((Map<String, Object>) elem.getValue()).get("default");
+            if (defaultValue != null) {
+                addPropertyToNode(node, elem.getKey(), defaultValue);
             } else {
-                node.put(elem.getKey(), "");
+                node.addProperty(elem.getKey(), "");
             }
         });
-        node.put("policy_id", "AUTO_GENERATED_POLICY_ID_AT_SUBMIT");
+        node.addProperty("policy_id", "AUTO_GENERATED_POLICY_ID_AT_SUBMIT");
         return node.toString();
     }
 
@@ -217,14 +214,10 @@ public class CsarInstallerImpl implements CsarInstaller {
     }
 
     /**
-     * This call must be done when deploying the SDC notification as this call get
-     * the latest version of the artifact (version can be specified to DCAE call)
+     * This call must be done when deploying the SDC notification as this call get the latest version of the artifact
+     * (version can be specified to DCAE call)
      *
-     * @param blueprintArtifact
      * @return The DcaeInventoryResponse object containing the dcae values
-     * @throws IOException
-     * @throws ParseException
-     * @throws InterruptedException
      */
     private DcaeInventoryResponse queryDcaeToGetServiceTypeId(BlueprintArtifact blueprintArtifact)
         throws IOException, ParseException, InterruptedException {
@@ -292,4 +285,18 @@ public class CsarInstallerImpl implements CsarInstaller {
             + inputParams + "]}");
         return cldsModel.save(cldsDao, null);
     }
+
+    private void addPropertyToNode(JsonObject node, String key, Object value) {
+        if (value instanceof String) {
+            node.addProperty(key, (String) value);
+        } else if (value instanceof Number) {
+            node.addProperty(key, (Number) value);
+        } else if (value instanceof Boolean) {
+            node.addProperty(key, (Boolean) value);
+        } else if (value instanceof Character) {
+            node.addProperty(key, (Character) value);
+        } else {
+            node.addProperty(key, JsonUtils.GSON.toJson(value));
+        }
+    }
 }
diff --git a/src/main/java/org/onap/clamp/clds/service/CldsService.java b/src/main/java/org/onap/clamp/clds/service/CldsService.java
index 206a4246b..2bad07f4a 100644
--- a/src/main/java/org/onap/clamp/clds/service/CldsService.java
+++ b/src/main/java/org/onap/clamp/clds/service/CldsService.java
@@ -26,11 +26,12 @@ package org.onap.clamp.clds.service;
 
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ObjectNode;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.reflect.TypeToken;
 import java.io.IOException;
+import java.lang.reflect.Type;
 import java.security.GeneralSecurityException;
 import java.util.Date;
 import java.util.List;
@@ -64,12 +65,11 @@ import org.onap.clamp.clds.model.CldsServiceData;
 import org.onap.clamp.clds.model.CldsTemplate;
 import org.onap.clamp.clds.model.DcaeEvent;
 import org.onap.clamp.clds.model.ValueItem;
-import org.onap.clamp.clds.model.properties.AbstractModelElement;
 import org.onap.clamp.clds.model.properties.ModelProperties;
 import org.onap.clamp.clds.model.sdc.SdcServiceInfo;
 import org.onap.clamp.clds.sdc.controller.installer.CsarInstallerImpl;
 import org.onap.clamp.clds.transform.XslTransformer;
-import org.onap.clamp.clds.util.JacksonUtils;
+import org.onap.clamp.clds.util.JsonUtils;
 import org.onap.clamp.clds.util.LoggingUtils;
 import org.onap.clamp.clds.util.ONAPLogConstants;
 import org.slf4j.event.Level;
@@ -86,6 +86,8 @@ import org.springframework.web.client.HttpClientErrorException;
 @Component
 public class CldsService extends SecureServiceBase {
 
+    public static final Type LIST_OF_SDC_SERVICE_INFO_TYPE = new TypeToken<List<SdcServiceInfo>>() {
+    }.getType();
     @Produce(uri = "direct:processSubmit")
     private CamelProxy camelProxy;
     protected static final EELFLogger securityLogger = EELFManager.getInstance().getSecurityLogger();
@@ -333,7 +335,7 @@ public class CldsService extends SecureServiceBase {
      *
      * @param action
      * @param modelName
-     * @param validateFlag
+     * @param test
      * @param model
      * @return
      * @throws TransformerException
@@ -500,7 +502,7 @@ public class CldsService extends SecureServiceBase {
      *         In case of issues
      */
     public String getSdcProperties() throws IOException {
-        return ((ObjectNode) refProp.getJsonTemplate(GLOBAL_PROPERTIES_KEY)).toString();
+        return refProp.getJsonTemplate(GLOBAL_PROPERTIES_KEY).toString();
     }
 
     /**
@@ -581,21 +583,19 @@ public class CldsService extends SecureServiceBase {
         if (StringUtils.isBlank(responseStr)) {
             return "";
         }
-        ObjectMapper objectMapper = JacksonUtils.getObjectMapperInstance();
-        List<SdcServiceInfo> rawList = objectMapper.readValue(responseStr,
-            objectMapper.getTypeFactory().constructCollectionType(List.class, SdcServiceInfo.class));
-        ObjectNode invariantIdServiceNode = objectMapper.createObjectNode();
-        ObjectNode serviceNode = objectMapper.createObjectNode();
+        List<SdcServiceInfo> rawList = JsonUtils.GSON.fromJson(responseStr, LIST_OF_SDC_SERVICE_INFO_TYPE);
+        JsonObject invariantIdServiceNode = new JsonObject();
+        JsonObject serviceNode = new JsonObject();
         logger.info("value of cldsserviceiNfolist: {}", rawList);
         if (rawList != null && !rawList.isEmpty()) {
             List<SdcServiceInfo> cldsSdcServiceInfoList = sdcCatalogServices.removeDuplicateServices(rawList);
             for (SdcServiceInfo currCldsSdcServiceInfo : cldsSdcServiceInfoList) {
                 if (currCldsSdcServiceInfo != null) {
-                    invariantIdServiceNode.put(currCldsSdcServiceInfo.getInvariantUUID(),
+                    invariantIdServiceNode.addProperty(currCldsSdcServiceInfo.getInvariantUUID(),
                         currCldsSdcServiceInfo.getName());
                 }
             }
-            serviceNode.putPOJO("service", invariantIdServiceNode);
+            serviceNode.add("service", invariantIdServiceNode);
         }
         return serviceNode.toString();
     }
@@ -710,16 +710,17 @@ public class CldsService extends SecureServiceBase {
     }
 
     private void checkForDuplicateServiceVf(String modelName, String modelPropText) throws IOException {
-        JsonNode globalNode = JacksonUtils.getObjectMapperInstance().readTree(modelPropText).get("global");
-        String service = AbstractModelElement.getValueByName(globalNode, "service");
-        List<String> resourceVf = AbstractModelElement.getValuesByName(globalNode, "vf");
+        JsonElement globalNode = JsonUtils.GSON.fromJson(modelPropText, JsonObject.class).get("global");
+        String service = JsonUtils.getStringValueByName(globalNode, "service");
+        List<String> resourceVf = JsonUtils.getStringValuesByName(globalNode, "vf");
         if (service != null && resourceVf != null && !resourceVf.isEmpty()) {
             List<CldsModelProp> cldsModelPropList = cldsDao.getDeployedModelProperties();
             for (CldsModelProp cldsModelProp : cldsModelPropList) {
-                JsonNode currentNode = JacksonUtils.getObjectMapperInstance().readTree(cldsModelProp.getPropText())
+                JsonElement currentNode = JsonUtils.GSON
+                    .fromJson(cldsModelProp.getPropText(), JsonObject.class)
                     .get("global");
-                String currentService = AbstractModelElement.getValueByName(currentNode, "service");
-                List<String> currentVf = AbstractModelElement.getValuesByName(currentNode, "vf");
+                String currentService = JsonUtils.getStringValueByName(currentNode, "service");
+                List<String> currentVf = JsonUtils.getStringValuesByName(currentNode, "vf");
                 if (currentVf != null && !currentVf.isEmpty()) {
                     if (!modelName.equalsIgnoreCase(cldsModelProp.getName()) && service.equalsIgnoreCase(currentService)
                         && resourceVf.get(0).equalsIgnoreCase(currentVf.get(0))) {
diff --git a/src/main/java/org/onap/clamp/clds/service/CldsUser.java b/src/main/java/org/onap/clamp/clds/service/CldsUser.java
index b30397dbe..82b7727bd 100644
--- a/src/main/java/org/onap/clamp/clds/service/CldsUser.java
+++ b/src/main/java/org/onap/clamp/clds/service/CldsUser.java
@@ -87,7 +87,7 @@ public class CldsUser {
 
     /**
      * Sets the permissions.
-     * 
+     *
      * @param permissionsArray
      *            the permissions to set
      */
diff --git a/src/main/java/org/onap/clamp/clds/service/JacksonObjectMapperProvider.java b/src/main/java/org/onap/clamp/clds/service/SecureServicePermissionDeserializer.java
index d6a4d2f50..9cbf711c9 100644
--- a/src/main/java/org/onap/clamp/clds/service/JacksonObjectMapperProvider.java
+++ b/src/main/java/org/onap/clamp/clds/service/SecureServicePermissionDeserializer.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * ONAP CLAMP
  * ================================================================================
- * Copyright (C) 2018 AT&T Intellectual Property. All rights
+ * Copyright (C) 2019 Nokia Intellectual Property. All rights
  *                             reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,34 +18,28 @@
  * limitations under the License.
  * ============LICENSE_END============================================
  * ===================================================================
- * 
+ *
  */
 
 package org.onap.clamp.clds.service;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-import javax.ws.rs.ext.ContextResolver;
-
-import org.onap.clamp.clds.util.JacksonUtils;
-
-/**
- * This class is to restrcit the class type that can be de-serialized.
- */
-public class JacksonObjectMapperProvider implements ContextResolver<ObjectMapper> {
+import com.google.gson.Gson;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import java.lang.reflect.Type;
 
-    private final ObjectMapper defaultObjectMapper;
-
-    public JacksonObjectMapperProvider() {
-        defaultObjectMapper = createDefaultMapper();
-    }
+public class SecureServicePermissionDeserializer implements JsonDeserializer<SecureServicePermission> {
 
     @Override
-    public ObjectMapper getContext(Class<?> type) {
-        return defaultObjectMapper;
-    }
-
-    private static ObjectMapper createDefaultMapper() {
-        return JacksonUtils.getObjectMapperInstance();
+    public SecureServicePermission deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+        throws JsonParseException {
+        if (json.isJsonPrimitive()) {
+            return new SecureServicePermission(json.getAsString());
+        } else {
+            // if not string try default deserialization
+            return new Gson().fromJson(json, SecureServicePermission.class);
+        }
     }
 }
diff --git a/src/main/java/org/onap/clamp/clds/util/JacksonUtils.java b/src/main/java/org/onap/clamp/clds/util/JacksonUtils.java
deleted file mode 100644
index 1f5419d71..000000000
--- a/src/main/java/org/onap/clamp/clds/util/JacksonUtils.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * ONAP CLAMP
- * ================================================================================
- * Copyright (C) 2018 AT&T Intellectual Property. All rights
- *                             reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License"); 
- * you may not use this file except in compliance with the License. 
- * You may obtain a copy of the License at
- * 
- * http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software 
- * distributed under the License is distributed on an "AS IS" BASIS, 
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
- * See the License for the specific language governing permissions and 
- * limitations under the License.
- * ============LICENSE_END============================================
- * ===================================================================
- * 
- */
-
-package org.onap.clamp.clds.util;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-/**
- * This class is used to access the jackson with restricted type access.
- */
-public class JacksonUtils {
-
-    private static ObjectMapper objectMapper;
-
-    private JacksonUtils() {
-    }
-
-    /**
-     * Call this method to retrieve a secure ObjectMapper.
-     * 
-     * @return an ObjectMapper instance (same for clamp)
-     */
-    public static synchronized ObjectMapper getObjectMapperInstance() {
-        if (objectMapper == null) {
-            objectMapper = new ObjectMapper();
-            // This is to disable the security hole that could be opened for
-            // json deserialization, if needed do this
-            // objectMapper.enableDefaultTyping(DefaultTyping.NON_FINAL);
-            objectMapper.disableDefaultTyping();
-        }
-        return objectMapper;
-    }
-}
diff --git a/src/main/java/org/onap/clamp/clds/util/JsonUtils.java b/src/main/java/org/onap/clamp/clds/util/JsonUtils.java
new file mode 100644
index 000000000..96ddc2929
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/util/JsonUtils.java
@@ -0,0 +1,170 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END============================================
+ * ===================================================================
+ *
+ */
+
+package org.onap.clamp.clds.util;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.google.common.collect.Lists;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.Spliterator;
+import java.util.Spliterators;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+import org.onap.clamp.clds.model.properties.AbstractModelElement;
+import org.onap.clamp.clds.service.SecureServicePermission;
+import org.onap.clamp.clds.service.SecureServicePermissionDeserializer;
+
+/**
+ * This class is used to access the jackson with restricted type access.
+ */
+public class JsonUtils {
+
+    protected static final EELFLogger logger = EELFManager.getInstance().getLogger(AbstractModelElement.class);
+    private static final String LOG_ELEMENT_NOT_FOUND = "Value '{}' for key 'name' not found in JSON";
+    private static final String LOG_ELEMENT_NOT_FOUND_IN_JSON = "Value '{}' for key 'name' not found in JSON {}";
+
+    public static final Gson GSON = new GsonBuilder()
+        .registerTypeAdapter(SecureServicePermission.class, new SecureServicePermissionDeserializer())
+        .create();
+
+    private JsonUtils() {
+    }
+
+
+    /**
+     * Return the value field of the json node element that has a name field equals to the given name.
+     */
+    public static String getStringValueByName(JsonElement jsonElement, String name) {
+        String value = extractJsonValueFromElement(jsonElement, name)
+            .map(JsonUtils::extractStringValueFromElement)
+            .orElse(null);
+        if (value == null) {
+            if (logger.isDebugEnabled()) {
+                logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, jsonElement.toString());
+            } else {
+                logger.warn(LOG_ELEMENT_NOT_FOUND, name);
+            }
+        }
+        return value;
+    }
+
+    /**
+     * Return an array of values for the field of the json node element that has a name field equals to the given name.
+     */
+    public static List<String> getStringValuesByName(JsonElement jsonElement, String name) {
+        List<String> values = extractJsonValueFromElement(jsonElement, name)
+            .map(JsonUtils::extractStringValuesFromElement).orElse(new ArrayList<>());
+        if (values.isEmpty()) {
+            if (logger.isDebugEnabled()) {
+                logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, jsonElement.toString());
+            } else {
+                logger.warn(LOG_ELEMENT_NOT_FOUND, name);
+            }
+        }
+        return values;
+    }
+
+    /**
+     * Return the int value field of the json node element that has a name field equals to the given name.
+     */
+    public static Integer getIntValueByName(JsonElement element, String name) {
+        String value = getStringValueByName(element, name);
+        return Integer.valueOf(value);
+    }
+
+
+    /**
+     * Return the Json value field of the json node element that has a name field equals to the given name.
+     */
+    public static JsonObject getJsonObjectByName(JsonElement jsonElement, String name) {
+        JsonObject jsonObject = extractJsonValueFromElement(jsonElement, name).map(JsonElement::getAsJsonObject)
+            .orElse(null);
+        if (jsonObject  == null) {
+            logger.warn(LOG_ELEMENT_NOT_FOUND, name);
+        } else {
+            logger.debug(LOG_ELEMENT_NOT_FOUND_IN_JSON, name, jsonElement.toString());
+        }
+        return jsonObject;
+    }
+
+    private static Optional<JsonElement> extractJsonValueFromElement(JsonElement jsonElement, String name) {
+        if(jsonElement != null ){
+            if (jsonElement.isJsonArray()) {
+                return extractValueJsonFromArray(jsonElement, name);
+            } else if (hasMatchingParameterName(name, jsonElement)) {
+                return Optional.of(jsonElement);
+            }
+        }
+        return Optional.empty();
+    }
+
+    private static Optional<JsonElement> extractValueJsonFromArray(JsonElement jsonElement, String name) {
+        for (JsonElement element : jsonElement.getAsJsonArray()) {
+            if (hasMatchingParameterName(name, element)) {
+                return Optional.of(element.getAsJsonObject().get("value"));
+            }
+        }
+        return Optional.empty();
+    }
+
+    private static boolean hasMatchingParameterName(String name, JsonElement element) {
+        return element.isJsonObject()
+            && element.getAsJsonObject().has("name")
+            && name.equals(element.getAsJsonObject().get("name").getAsString());
+    }
+
+    private static String extractStringValueFromElement(JsonElement element) {
+        if (element.isJsonArray()) {
+            return element.getAsJsonArray().get(0).getAsString();
+        } else if (element.isJsonPrimitive()) {
+            return element.getAsJsonPrimitive().getAsString();
+        } else {
+            return GSON.toJson(element);
+        }
+    }
+
+    private static List<String> extractStringValuesFromElement(JsonElement element) {
+        if (element.isJsonArray()) {
+            return StreamSupport.stream(
+                Spliterators.spliteratorUnknownSize(element.getAsJsonArray().iterator(), Spliterator.ORDERED),
+                false)
+                .filter(JsonElement::isJsonPrimitive)
+                .map(JsonElement::getAsJsonPrimitive)
+                .filter(JsonPrimitive::isString)
+                .map(JsonPrimitive::getAsString)
+                .collect(Collectors.toList());
+        } else {
+            String value = extractStringValueFromElement(element);
+            return Lists.newArrayList(value);
+        }
+
+    }
+}