CPS-1553 :REST endpoint to accept collection of cm handles for GET operation

-Introduced an interface having all un-implemented or default defination
of any method that is further extended or implemented by abstract or
stubbed controller.
-Exposed an endpoint to accept bulk request
-Modified an existing methods for more readability. (Parameterized datasource for ... methods)
-Code impl. for getResourceDataFromDmi method to send bulk request to
new proposed dmi-plugin endpoint that would accept bulk request.
-We need to investigate a groovy test that fails only into onap CICD pipeline.
For now it's commented out by added TODO tag.  (org/onap/cps/ncmp/rest/controller/NetworkCmProxyControllerSpec.groovy:205)

Issue-ID: CPS-1553

Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
Change-Id: Ieac39690956e3a0eab41068db57c5d93a16d04f0
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>

10 files changed, 338 insertions, 298 deletions

diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/NetworkCmProxyController.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/NetworkCmProxyController.java
index 4da251f3cc..a8bc3aec76 100755
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/NetworkCmProxyController.java
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/NetworkCmProxyController.java
@@ -23,10 +23,10 @@
 
 package org.onap.cps.ncmp.rest.controller;
 
-import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.CREATE;
-import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.DELETE;
-import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.PATCH;
-import static org.onap.cps.ncmp.api.impl.operations.DmiRequestBody.OperationEnum.UPDATE;
+import static org.onap.cps.ncmp.api.impl.operations.OperationEnum.CREATE;
+import static org.onap.cps.ncmp.api.impl.operations.OperationEnum.DELETE;
+import static org.onap.cps.ncmp.api.impl.operations.OperationEnum.PATCH;
+import static org.onap.cps.ncmp.api.impl.operations.OperationEnum.UPDATE;
 
 import java.util.Collection;
 import java.util.List;
@@ -74,12 +74,12 @@ public class NetworkCmProxyController implements NetworkCmProxyApi {
     /**
      * Get resource data from datastore.
      *
-     * @param datastoreName       name of the datastore
-     * @param cmHandle            cm handle identifier
-     * @param resourceIdentifier  resource identifier
-     * @param optionsParamInQuery options query parameter
-     * @param topicParamInQuery   topic query parameter
-     * @param includeDescendants  whether include descendants
+     * @param datastoreName              name of the datastore
+     * @param cmHandle                   cm handle identifier
+     * @param resourceIdentifier         resource identifier
+     * @param optionsParamInQuery        options query parameter
+     * @param topicParamInQuery          topic query parameter
+     * @param includeDescendantsAsObject whether include descendants
      * @return {@code ResponseEntity} response from dmi plugin
      */
 
@@ -89,25 +89,48 @@ public class NetworkCmProxyController implements NetworkCmProxyApi {
                                                              final String resourceIdentifier,
                                                              final String optionsParamInQuery,
                                                              final String topicParamInQuery,
-                                                             final Boolean includeDescendants) {
+                                                             final Boolean includeDescendantsAsObject) {
 
         final NcmpDatastoreRequestHandler ncmpDatastoreRequestHandler =
-                ncmpDatastoreResourceRequestHandlerFactory.getNcmpDatastoreResourceRequestHandler(
+                ncmpDatastoreResourceRequestHandlerFactory.getNcmpResourceRequestHandler(
                         DatastoreType.fromDatastoreName(datastoreName));
 
+        final boolean includeDescendants = toPrimitiveFlag(includeDescendantsAsObject);
+
         return ncmpDatastoreRequestHandler.executeRequest(cmHandle, resourceIdentifier,
                 optionsParamInQuery, topicParamInQuery, includeDescendants);
     }
 
+    @Override
+    public ResponseEntity<Object> getResourceDataForCmHandleBatch(final String resourceIdentifier,
+                                                                  final String topicParamInQuery,
+                                                                  final String datastoreName,
+                                                                  final Object requestBody,
+                                                                  final String optionsParamInQuery,
+                                                                  final Boolean includeDescendantsAsObject) {
+
+        final NcmpDatastoreRequestHandler ncmpDatastoreRequestHandler =
+                ncmpDatastoreResourceRequestHandlerFactory.getNcmpResourceRequestHandler(
+                        DatastoreType.fromDatastoreName(datastoreName));
+
+        final List<String> cmHandleIds = jsonObjectMapper.convertJsonString(jsonObjectMapper.asJsonString(requestBody),
+                List.class);
+
+        final boolean includeDescendants = toPrimitiveFlag(includeDescendantsAsObject);
+
+        return ncmpDatastoreRequestHandler.executeRequest(cmHandleIds, resourceIdentifier,
+                optionsParamInQuery, topicParamInQuery, includeDescendants);
+    }
+
     /**
      * Query resource data from datastore.
      *
-     * @param datastoreName       name of the datastore
-     * @param cmHandle            cm handle identifier
-     * @param cpsPath             CPS Path
-     * @param optionsParamInQuery options query parameter
-     * @param topicParamInQuery   topic query parameter
-     * @param includeDescendants  whether include descendants
+     * @param datastoreName              name of the datastore
+     * @param cmHandle                   cm handle identifier
+     * @param cpsPath                    CPS Path
+     * @param optionsParamInQuery        options query parameter
+     * @param topicParamInQuery          topic query parameter
+     * @param includeDescendantsAsObject whether include descendants
      * @return {@code ResponseEntity} response from dmi plugin
      */
 
@@ -117,13 +140,15 @@ public class NetworkCmProxyController implements NetworkCmProxyApi {
                                                                final String cpsPath,
                                                                final String optionsParamInQuery,
                                                                final String topicParamInQuery,
-                                                               final Boolean includeDescendants) {
+                                                               final Boolean includeDescendantsAsObject) {
         validateDataStore(DatastoreType.OPERATIONAL, datastoreName);
-        final NcmpDatastoreRequestHandler ncmpDatastoreRequestHandler =
-            ncmpDatastoreResourceRequestHandlerFactory.getNcmpDatastoreResourceQueryHandler();
+        final NcmpDatastoreRequestHandler ncmpCachedResourceRequestHandler =
+            ncmpDatastoreResourceRequestHandlerFactory.getNcmpResourceRequestHandler(
+                    DatastoreType.fromDatastoreName(datastoreName));
 
-        return ncmpDatastoreRequestHandler.executeRequest(cmHandle, cpsPath, optionsParamInQuery,
-            topicParamInQuery, includeDescendants);
+        final boolean includeDescendants = toPrimitiveFlag(includeDescendantsAsObject);
+
+        return ncmpCachedResourceRequestHandler.executeRequest(cmHandle, cpsPath, includeDescendants);
     }
 
     /**
@@ -367,5 +392,12 @@ public class NetworkCmProxyController implements NetworkCmProxyApi {
             throw new InvalidDatastoreException(requestedDatastoreName + " is not supported");
         }
     }
+
+    private static boolean toPrimitiveFlag(final Boolean includeDescendantsAsObject) {
+        if (includeDescendantsAsObject == null) {
+            return false;
+        }
+        return includeDescendantsAsObject.booleanValue();
+    }
 }
 
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpCachedResourceRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpCachedResourceRequestHandler.java
new file mode 100644
index 0000000000..620f64782b
--- /dev/null
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpCachedResourceRequestHandler.java
@@ -0,0 +1,70 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022-2023 Nordix Foundation
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.rest.controller.handlers;
+
+import java.util.function.Supplier;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import org.onap.cps.ncmp.api.NetworkCmProxyQueryService;
+import org.onap.cps.spi.FetchDescendantsOption;
+import org.springframework.stereotype.Component;
+
+@RequiredArgsConstructor
+@Component
+public class NcmpCachedResourceRequestHandler extends NcmpDatastoreRequestHandler {
+
+    @Setter
+    private String dataStoreName;
+    private final NetworkCmProxyQueryService networkCmProxyQueryService;
+
+    @Override
+    public Supplier<Object> getTaskSupplierForGetRequest(final String cmHandleId,
+                                                         final String resourceIdentifier,
+                                                         final String optionsParamInQuery,
+                                                         final String topicParamInQuery,
+                                                         final String requestId,
+                                                         final boolean includeDescendants) {
+
+        final FetchDescendantsOption fetchDescendantsOption =
+                TaskManagementDefaultHandler.getFetchDescendantsOption(includeDescendants);
+
+        return () -> networkCmProxyDataService.getResourceDataForCmHandle(dataStoreName, cmHandleId, resourceIdentifier,
+                fetchDescendantsOption);
+    }
+
+    /**
+     * Gets ncmp datastore query handler.
+     * Note. Currently only ncmp-datastore:operational supports query operations
+     * @return a ncmp datastore query handler.
+     */
+    @Override
+    public Supplier<Object> getTaskSupplierForQueryRequest(final String cmHandleId,
+                                                           final String resourceIdentifier,
+                                                           final boolean includeDescendants) {
+
+        final FetchDescendantsOption fetchDescendantsOption =
+                TaskManagementDefaultHandler.getFetchDescendantsOption(includeDescendants);
+
+        return () -> networkCmProxyQueryService.queryResourceDataOperational(cmHandleId, resourceIdentifier,
+                fetchDescendantsOption);
+    }
+
+}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalQueryHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalQueryHandler.java
deleted file mode 100644
index 0586d42625..0000000000
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalQueryHandler.java
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
- *  ================================================================================
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  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.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.ncmp.rest.controller.handlers;
-
-import java.util.function.Supplier;
-import lombok.extern.slf4j.Slf4j;
-import org.onap.cps.ncmp.api.NetworkCmProxyQueryService;
-import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
-import org.onap.cps.spi.FetchDescendantsOption;
-
-@Slf4j
-public class NcmpDatastoreOperationalQueryHandler extends NcmpDatastoreRequestHandler {
-
-    private final NetworkCmProxyQueryService networkCmProxyQueryService;
-
-    public NcmpDatastoreOperationalQueryHandler(final NetworkCmProxyQueryService networkCmProxyQueryService,
-                                                final CpsNcmpTaskExecutor cpsNcmpTaskExecutor,
-                                                final int timeOutInMilliSeconds,
-                                                final boolean notificationFeatureEnabled) {
-        super(null, cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
-        this.networkCmProxyQueryService = networkCmProxyQueryService;
-    }
-
-    @Override
-    public Supplier<Object> getTaskSupplier(final String cmHandle,
-                                            final String resourceIdentifier,
-                                            final String optionsParamInQuery,
-                                            final String topicParamInQuery,
-                                            final String requestId,
-                                            final Boolean includeDescendant) {
-
-        final FetchDescendantsOption fetchDescendantsOption = getFetchDescendantsOption(includeDescendant);
-
-        return () -> networkCmProxyQueryService.queryResourceDataOperational(cmHandle, resourceIdentifier,
-            fetchDescendantsOption);
-    }
-
-}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalResourceRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalResourceRequestHandler.java
deleted file mode 100644
index a4720b22ff..0000000000
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreOperationalResourceRequestHandler.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
- *  ================================================================================
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  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.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.ncmp.rest.controller.handlers;
-
-import java.util.function.Supplier;
-import lombok.extern.slf4j.Slf4j;
-import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
-import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
-import org.onap.cps.spi.FetchDescendantsOption;
-
-@Slf4j
-public class NcmpDatastoreOperationalResourceRequestHandler extends NcmpDatastoreRequestHandler {
-
-    public NcmpDatastoreOperationalResourceRequestHandler(final NetworkCmProxyDataService networkCmProxyDataService,
-                                                          final CpsNcmpTaskExecutor cpsNcmpTaskExecutor,
-                                                          final int timeOutInMilliSeconds,
-                                                          final boolean notificationFeatureEnabled) {
-        super(networkCmProxyDataService, cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
-    }
-
-    @Override
-    public Supplier<Object> getTaskSupplier(final String cmHandle,
-                                            final String resourceIdentifier,
-                                            final String optionsParamInQuery,
-                                            final String topicParamInQuery,
-                                            final String requestId,
-                                            final Boolean includeDescendant) {
-
-        final FetchDescendantsOption fetchDescendantsOption = getFetchDescendantsOption(includeDescendant);
-
-        return () -> networkCmProxyDataService.getResourceDataOperational(cmHandle, resourceIdentifier,
-                fetchDescendantsOption);
-    }
-
-}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughOperationalResourceRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughOperationalResourceRequestHandler.java
deleted file mode 100644
index 1445e3e271..0000000000
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughOperationalResourceRequestHandler.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
- *  ================================================================================
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  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.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.ncmp.rest.controller.handlers;
-
-import java.util.function.Supplier;
-import lombok.extern.slf4j.Slf4j;
-import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
-import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
-
-@Slf4j
-public class NcmpDatastorePassthroughOperationalResourceRequestHandler extends NcmpDatastoreRequestHandler {
-
-    public NcmpDatastorePassthroughOperationalResourceRequestHandler(
-            final NetworkCmProxyDataService networkCmProxyDataService,
-            final CpsNcmpTaskExecutor cpsNcmpTaskExecutor,
-            final int timeOutInMilliSeconds,
-            final boolean notificationFeatureEnabled) {
-        super(networkCmProxyDataService, cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
-    }
-
-    @Override
-    public Supplier<Object> getTaskSupplier(final String cmHandle,
-                                            final String resourceIdentifier,
-                                            final String optionsParamInQuery,
-                                            final String topicParamInQuery,
-                                            final String requestId,
-                                            final Boolean includeDescendant) {
-
-        return () -> networkCmProxyDataService.getResourceDataOperationalForCmHandle(
-                cmHandle, resourceIdentifier, optionsParamInQuery, topicParamInQuery, requestId);
-    }
-
-}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughRunningResourceRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughRunningResourceRequestHandler.java
deleted file mode 100644
index 8194ec9fd5..0000000000
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastorePassthroughRunningResourceRequestHandler.java
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
- *  ================================================================================
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  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.
- *
- *  SPDX-License-Identifier: Apache-2.0
- *  ============LICENSE_END=========================================================
- */
-
-package org.onap.cps.ncmp.rest.controller.handlers;
-
-import java.util.function.Supplier;
-import lombok.extern.slf4j.Slf4j;
-import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
-import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
-
-@Slf4j
-public class NcmpDatastorePassthroughRunningResourceRequestHandler extends NcmpDatastoreRequestHandler {
-
-    public NcmpDatastorePassthroughRunningResourceRequestHandler(
-            final NetworkCmProxyDataService networkCmProxyDataService,
-            final CpsNcmpTaskExecutor cpsNcmpTaskExecutor,
-            final int timeOutInMilliSeconds,
-            final boolean notificationFeatureEnabled) {
-        super(networkCmProxyDataService, cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
-    }
-
-    @Override
-    public Supplier<Object> getTaskSupplier(final String cmHandle,
-                                            final String resourceIdentifier,
-                                            final String optionsParamInQuery,
-                                            final String topicParamInQuery,
-                                            final String requestId,
-                                            final Boolean includeDescendant) {
-
-        return () -> networkCmProxyDataService.getResourceDataPassThroughRunningForCmHandle(
-                cmHandle, resourceIdentifier, optionsParamInQuery, topicParamInQuery, requestId);
-    }
-}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreRequestHandler.java
index 850200396b..050e724b2c 100644
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreRequestHandler.java
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreRequestHandler.java
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
+ *  Copyright (C) 2022-2023 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -20,38 +20,37 @@
 
 package org.onap.cps.ncmp.rest.controller.handlers;
 
+import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import java.util.function.Supplier;
-import lombok.RequiredArgsConstructor;
+import lombok.NoArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
 import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
 import org.onap.cps.ncmp.rest.util.TopicValidator;
-import org.onap.cps.spi.FetchDescendantsOption;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
 
-@RequiredArgsConstructor
+@NoArgsConstructor
 @Slf4j
-public abstract class NcmpDatastoreRequestHandler {
+@Service
+public class NcmpDatastoreRequestHandler implements TaskManagementDefaultHandler {
 
-    private static final String NO_REQUEST_ID = null;
-    private static final String NO_TOPIC = null;
-
-    protected final NetworkCmProxyDataService networkCmProxyDataService;
-    protected final CpsNcmpTaskExecutor cpsNcmpTaskExecutor;
-    protected final int timeOutInMilliSeconds;
-    protected final boolean notificationFeatureEnabled;
-
-    protected abstract Supplier<Object> getTaskSupplier(final String cmHandle,
-                                                        final String resourceIdentifier,
-                                                        final String optionsParamInQuery,
-                                                        final String topicParamInQuery,
-                                                        final String requestId,
-                                                        final Boolean includeDescendant);
+    @Value("${notification.async.executor.time-out-value-in-ms:2000}")
+    protected int timeOutInMilliSeconds;
+    @Value("${notification.enabled:true}")
+    protected boolean notificationFeatureEnabled;
+    @Autowired
+    protected NetworkCmProxyDataService networkCmProxyDataService;
+    @Autowired
+    protected CpsNcmpTaskExecutor cpsNcmpTaskExecutor;
 
     /**
-     * Execute a request on a datastore.
+     * Executes synchronous/asynchronous request for given cm handle.
      *
      * @param cmHandleId          the cm handle
      * @param resourceIdentifier  the resource identifier
@@ -64,25 +63,62 @@ public abstract class NcmpDatastoreRequestHandler {
                                                  final String resourceIdentifier,
                                                  final String optionsParamInQuery,
                                                  final String topicParamInQuery,
-                                                 final Boolean includeDescendants) {
+                                                 final boolean includeDescendants) {
 
         final boolean asyncResponseRequested = topicParamInQuery != null;
         if (asyncResponseRequested && notificationFeatureEnabled) {
-            final String requestId = UUID.randomUUID().toString();
-            final Supplier<Object> taskSupplier = getTaskSupplier(cmHandleId, resourceIdentifier, optionsParamInQuery,
-                topicParamInQuery, requestId, includeDescendants);
-            return executeTaskAsync(topicParamInQuery, requestId, taskSupplier);
+            return executeAsyncTaskAndGetResponseEntity(cmHandleId, resourceIdentifier, optionsParamInQuery,
+                    topicParamInQuery, includeDescendants, false);
         }
 
         if (asyncResponseRequested) {
             log.warn("Asynchronous request is unavailable as notification feature is currently disabled, "
-                + "will use synchronous operation.");
+                    + "will use synchronous operation.");
         }
-        final Supplier<Object> taskSupplier = getTaskSupplier(cmHandleId, resourceIdentifier, optionsParamInQuery,
-            NO_TOPIC, NO_REQUEST_ID, includeDescendants);
+        final Supplier<Object> taskSupplier = getTaskSupplierForGetRequest(cmHandleId,
+                resourceIdentifier, optionsParamInQuery, NO_TOPIC, NO_REQUEST_ID, includeDescendants);
         return executeTaskSync(taskSupplier);
     }
 
+    /**
+     * Executes a synchronous request for given cm handle.
+     * Note. Currently only ncmp-datastore:operational supports query operations.
+     *
+     * @param cmHandleId         the cm handle
+     * @param resourceIdentifier the resource identifier
+     * @param includeDescendants whether include descendants
+     * @return the response entity
+     */
+    public ResponseEntity<Object> executeRequest(final String cmHandleId,
+                                                 final String resourceIdentifier,
+                                                 final boolean includeDescendants) {
+
+        final Supplier<Object> taskSupplier = getTaskSupplierForQueryRequest(cmHandleId, resourceIdentifier,
+                includeDescendants);
+        return executeTaskSync(taskSupplier);
+    }
+
+    /**
+     * Executes synchronous/asynchronous request for batch of cm handles.
+     *
+     * @param cmHandleIds         list of cm handles
+     * @param resourceIdentifier  the resource identifier
+     * @param optionsParamInQuery the options param in query
+     * @param topicParamInQuery   the topic param in query
+     * @param includeDescendants  whether include descendants
+     * @return the response entity
+     */
+    public ResponseEntity<Object> executeRequest(final List<String> cmHandleIds,
+                                                 final String resourceIdentifier,
+                                                 final String optionsParamInQuery,
+                                                 final String topicParamInQuery,
+                                                 final boolean includeDescendants) {
+
+        return executeAsyncTaskAndGetResponseEntity(cmHandleIds, resourceIdentifier, optionsParamInQuery,
+                topicParamInQuery, includeDescendants, true);
+
+    }
+
     protected ResponseEntity<Object> executeTaskAsync(final String topicParamInQuery,
                                                       final String requestId,
                                                       final Supplier<Object> taskSupplier) {
@@ -98,9 +134,25 @@ public abstract class NcmpDatastoreRequestHandler {
         return ResponseEntity.ok(taskSupplier.get());
     }
 
-    protected static FetchDescendantsOption getFetchDescendantsOption(final Boolean includeDescendant) {
-        return Boolean.TRUE.equals(includeDescendant) ? FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS
-            : FetchDescendantsOption.OMIT_DESCENDANTS;
+    private ResponseEntity<Object> executeAsyncTaskAndGetResponseEntity(final Object targetObject,
+                                                                        final String resourceIdentifier,
+                                                                        final String optionsParamInQuery,
+                                                                        final String topicParamInQuery,
+                                                                        final boolean includeDescendants,
+                                                                        final boolean isBulkRequest) {
+        final String requestId = UUID.randomUUID().toString();
+        final Supplier<Object> taskSupplier;
+        if (isBulkRequest) {
+            taskSupplier = getTaskSupplierForBulkRequest((List<String>) targetObject,
+                    resourceIdentifier, optionsParamInQuery, topicParamInQuery, requestId, includeDescendants);
+        } else {
+            taskSupplier = getTaskSupplierForGetRequest(targetObject.toString(), resourceIdentifier,
+                    optionsParamInQuery, topicParamInQuery, requestId, includeDescendants);
+        }
+        if (taskSupplier == NO_OBJECT_SUPPLIER) {
+            return new ResponseEntity<>(Map.of("status", "Unable to execute request as "
+                    + "datastore is not implemented."), HttpStatus.NOT_IMPLEMENTED);
+        }
+        return executeTaskAsync(topicParamInQuery, requestId, taskSupplier);
     }
-
 }
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreResourceRequestHandlerFactory.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreResourceRequestHandlerFactory.java
index ff7bda6a47..9a71798fa1 100644
--- a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreResourceRequestHandlerFactory.java
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpDatastoreResourceRequestHandlerFactory.java
@@ -1,6 +1,6 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Nordix Foundation
+ *  Copyright (C) 2022-2023 Nordix Foundation
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -21,24 +21,13 @@
 package org.onap.cps.ncmp.rest.controller.handlers;
 
 import lombok.RequiredArgsConstructor;
-import org.onap.cps.ncmp.api.NetworkCmProxyDataService;
-import org.onap.cps.ncmp.api.NetworkCmProxyQueryService;
-import org.onap.cps.ncmp.rest.executor.CpsNcmpTaskExecutor;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 
 @Component
 @RequiredArgsConstructor
 public class NcmpDatastoreResourceRequestHandlerFactory {
-
-    private final NetworkCmProxyDataService networkCmProxyDataService;
-    private final NetworkCmProxyQueryService networkCmProxyQueryService;
-    private final CpsNcmpTaskExecutor cpsNcmpTaskExecutor;
-
-    @Value("${notification.async.executor.time-out-value-in-ms:2000}")
-    private int timeOutInMilliSeconds;
-    @Value("${notification.enabled:true}")
-    private boolean notificationFeatureEnabled;
+    private final NcmpCachedResourceRequestHandler ncmpCachedResourceRequestHandler;
+    private final NcmpPassthroughResourceRequestHandler ncmpPassthroughResourceRequestHandler;
 
     /**
      * Gets ncmp datastore handler.
@@ -46,31 +35,17 @@ public class NcmpDatastoreResourceRequestHandlerFactory {
      * @param datastoreType the datastore type
      * @return the ncmp datastore handler
      */
-    public NcmpDatastoreRequestHandler getNcmpDatastoreResourceRequestHandler(
-            final DatastoreType datastoreType) {
+    public NcmpDatastoreRequestHandler getNcmpResourceRequestHandler(final DatastoreType datastoreType) {
 
         switch (datastoreType) {
             case OPERATIONAL:
-                return new NcmpDatastoreOperationalResourceRequestHandler(networkCmProxyDataService,
-                        cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
+                ncmpCachedResourceRequestHandler.setDataStoreName(datastoreType.getDatastoreName());
+                return ncmpCachedResourceRequestHandler;
             case PASSTHROUGH_RUNNING:
-                return new NcmpDatastorePassthroughRunningResourceRequestHandler(networkCmProxyDataService,
-                        cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
             case PASSTHROUGH_OPERATIONAL:
             default:
-                return new NcmpDatastorePassthroughOperationalResourceRequestHandler(networkCmProxyDataService,
-                        cpsNcmpTaskExecutor, timeOutInMilliSeconds, notificationFeatureEnabled);
+                ncmpPassthroughResourceRequestHandler.setDataStoreName(datastoreType.getDatastoreName());
+                return ncmpPassthroughResourceRequestHandler;
         }
     }
-
-    /**
-     * Gets ncmp datastore query handler.
-     * Note. Currently only ncmp-datastore:operational supports query operations
-     * @return a ncmp datastore query handler.
-     */
-    public NcmpDatastoreRequestHandler getNcmpDatastoreResourceQueryHandler() {
-        return new NcmpDatastoreOperationalQueryHandler(networkCmProxyQueryService, cpsNcmpTaskExecutor,
-            timeOutInMilliSeconds, notificationFeatureEnabled);
-    }
-
 }
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpPassthroughResourceRequestHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpPassthroughResourceRequestHandler.java
new file mode 100644
index 0000000000..ab5d587e93
--- /dev/null
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/NcmpPassthroughResourceRequestHandler.java
@@ -0,0 +1,58 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022-2023 Nordix Foundation
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.rest.controller.handlers;
+
+import java.util.List;
+import java.util.function.Supplier;
+import lombok.Setter;
+import org.springframework.stereotype.Component;
+
+@Component
+public class NcmpPassthroughResourceRequestHandler extends NcmpDatastoreRequestHandler {
+
+    @Setter
+    private String dataStoreName;
+
+    @Override
+    public Supplier<Object> getTaskSupplierForGetRequest(final String cmHandleId,
+                                                         final String resourceIdentifier,
+                                                         final String optionsParamInQuery,
+                                                         final String topicParamInQuery,
+                                                         final String requestId,
+                                                         final boolean includeDescendants) {
+
+        return () -> networkCmProxyDataService.getResourceDataForCmHandle(
+                dataStoreName, cmHandleId, resourceIdentifier, optionsParamInQuery, topicParamInQuery, requestId);
+    }
+
+    @Override
+    public Supplier<Object> getTaskSupplierForBulkRequest(final List<String> cmHandleIds,
+                                                         final String resourceIdentifier,
+                                                         final String optionsParamInQuery,
+                                                         final String topicParamInQuery,
+                                                         final String requestId,
+                                                         final boolean includeDescendants) {
+
+        return () -> networkCmProxyDataService.getResourceDataForCmHandleBatch(
+                dataStoreName, cmHandleIds, resourceIdentifier, optionsParamInQuery, topicParamInQuery, requestId);
+    }
+
+}
diff --git a/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/TaskManagementDefaultHandler.java b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/TaskManagementDefaultHandler.java
new file mode 100644
index 0000000000..08e8407c63
--- /dev/null
+++ b/cps-ncmp-rest/src/main/java/org/onap/cps/ncmp/rest/controller/handlers/TaskManagementDefaultHandler.java
@@ -0,0 +1,63 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.rest.controller.handlers;
+
+import java.util.List;
+import java.util.function.Supplier;
+import org.onap.cps.spi.FetchDescendantsOption;
+
+public interface TaskManagementDefaultHandler {
+
+    String NO_REQUEST_ID = null;
+    String NO_TOPIC = null;
+    Supplier<Object> NO_OBJECT_SUPPLIER = null;
+
+    default Supplier<Object> getTaskSupplierForGetRequest(final String cmHandleId,
+                                                          final String resourceIdentifier,
+                                                          final String optionsParamInQuery,
+                                                          final String topicParamInQuery,
+                                                          final String requestId,
+                                                          final boolean includeDescendant) {
+        return NO_OBJECT_SUPPLIER;
+
+    }
+
+    default Supplier<Object> getTaskSupplierForQueryRequest(final String cmHandleId,
+                                                            final String resourceIdentifier,
+                                                            final boolean includeDescendant) {
+        return NO_OBJECT_SUPPLIER;
+
+    }
+
+    default Supplier<Object> getTaskSupplierForBulkRequest(final List<String> cmHandleIds,
+                                                           final String resourceIdentifier,
+                                                           final String optionsParamInQuery,
+                                                           final String topicParamInQuery,
+                                                           final String requestId,
+                                                           final boolean includeDescendant) {
+        return NO_OBJECT_SUPPLIER;
+    }
+
+    static FetchDescendantsOption getFetchDescendantsOption(final boolean includeDescendants) {
+        return includeDescendants ? FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS
+                : FetchDescendantsOption.OMIT_DESCENDANTS;
+    }
+}