Return Registration response for updating cmhandles

- Added CMHandleRegistrationResponse class for registration response
- Send response in the case of success and failure
- Each update operation in the request is independent on previous one

Issue-ID: CPS-896
Signed-off-by: Renu Kumari <renu.kumari@bell.ca>
Change-Id: Ic6cc69da48bd2078029784cabede4f5965054c03

2 files changed, 106 insertions, 6 deletions

diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServicePropertyHandler.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServicePropertyHandler.java
index ca2f578f46..532d8463d7 100644
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServicePropertyHandler.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServicePropertyHandler.java
@@ -1,6 +1,7 @@
 /*
  *  ============LICENSE_START=======================================================
  *  Copyright (C) 2022 Nordix Foundation
+ *  Modifications Copyright (C) 2022 Bell Canada
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -28,15 +29,19 @@ import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NCMP_DMI
 import static org.onap.cps.ncmp.api.impl.constants.DmiRegistryConstants.NO_TIMESTAMP;
 
 import com.google.common.collect.ImmutableMap;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.onap.cps.api.CpsDataService;
+import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse;
+import org.onap.cps.ncmp.api.models.CmHandleRegistrationResponse.RegistrationError;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
 import org.onap.cps.spi.FetchDescendantsOption;
 import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
@@ -61,23 +66,32 @@ public class NetworkCmProxyDataServicePropertyHandler {
      *
      * @param ncmpServiceCmHandles collection of ncmpServiceCmHandles
      */
-    public void updateCmHandleProperties(final Collection<NcmpServiceCmHandle> ncmpServiceCmHandles)
+    public List<CmHandleRegistrationResponse> updateCmHandleProperties(
+        final Collection<NcmpServiceCmHandle> ncmpServiceCmHandles)
         throws DataNodeNotFoundException {
+        final List<CmHandleRegistrationResponse> cmHandleRegistrationResponses = new ArrayList<>();
         for (final NcmpServiceCmHandle ncmpServiceCmHandle : ncmpServiceCmHandles) {
+            final String cmHandle = ncmpServiceCmHandle.getCmHandleID();
             try {
-                final String cmHandleXpath = String.format(CM_HANDLE_XPATH_TEMPLATE,
-                    ncmpServiceCmHandle.getCmHandleID());
+                final String cmHandleXpath = String.format(CM_HANDLE_XPATH_TEMPLATE, cmHandle);
                 final DataNode existingCmHandleDataNode =
                         cpsDataService.getDataNode(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR, cmHandleXpath,
                                 FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS);
                 processUpdates(existingCmHandleDataNode, ncmpServiceCmHandle);
+                cmHandleRegistrationResponses.add(CmHandleRegistrationResponse.createSuccessResponse(cmHandle));
             } catch (final DataNodeNotFoundException e) {
                 log.error("Unable to find dataNode for cmHandleId : {} , caused by : {}",
-                    ncmpServiceCmHandle.getCmHandleID(),
-                        e.getMessage());
-                throw e;
+                    cmHandle, e.getMessage());
+                cmHandleRegistrationResponses.add(CmHandleRegistrationResponse
+                    .createFailureResponse(cmHandle, RegistrationError.CM_HANDLE_DOES_NOT_EXIST));
+            } catch (final Exception exception) {
+                log.error("Unable to update dataNode for cmHandleId : {} , caused by : {}",
+                    cmHandle, exception.getMessage());
+                cmHandleRegistrationResponses.add(
+                    CmHandleRegistrationResponse.createFailureResponse(cmHandle, exception));
             }
         }
+        return cmHandleRegistrationResponses;
     }
 
     private void processUpdates(final DataNode existingCmHandleDataNode, final NcmpServiceCmHandle incomingCmHandle) {
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleRegistrationResponse.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleRegistrationResponse.java
new file mode 100644
index 0000000000..e183ed114b
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/models/CmHandleRegistrationResponse.java
@@ -0,0 +1,86 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022 Bell Canada
+ *  ================================================================================
+ *  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.api.models;
+
+import lombok.Builder;
+import lombok.Data;
+import lombok.RequiredArgsConstructor;
+
+@Data
+@Builder
+public class CmHandleRegistrationResponse {
+
+    private final String cmHandle;
+    private final Status status;
+    private RegistrationError registrationError;
+    private String errorText;
+
+    /**
+     * Creates a failure response based on exception.
+     *
+     * @param cmHandle  cmHandle
+     * @param exception exception
+     * @return CmHandleRegistrationResponse
+     */
+    public static CmHandleRegistrationResponse createFailureResponse(final String cmHandle, final Exception exception) {
+        return CmHandleRegistrationResponse.builder()
+            .cmHandle(cmHandle)
+            .status(Status.FAILURE)
+            .registrationError(RegistrationError.UNKNOWN_ERROR)
+            .errorText(exception.getMessage()).build();
+    }
+
+    /**
+     * Creates a failure response based on registration error.
+     *
+     * @param cmHandle          cmHandle
+     * @param registrationError registrationError
+     * @return CmHandleRegistrationResponse
+     */
+    public static CmHandleRegistrationResponse createFailureResponse(final String cmHandle,
+        final RegistrationError registrationError) {
+        return CmHandleRegistrationResponse.builder().cmHandle(cmHandle)
+            .status(Status.FAILURE)
+            .registrationError(registrationError)
+            .errorText(registrationError.errorText)
+            .build();
+    }
+
+    public static CmHandleRegistrationResponse createSuccessResponse(final String cmHandle) {
+        return CmHandleRegistrationResponse.builder().cmHandle(cmHandle)
+            .status(Status.SUCCESS).build();
+    }
+
+    public enum Status {
+        SUCCESS, FAILURE;
+    }
+
+    @RequiredArgsConstructor
+    public enum RegistrationError {
+        UNKNOWN_ERROR("00", "Unknown error"),
+        CM_HANDLE_ALREADY_EXIST("01", "cm-handle already exists"),
+        CM_HANDLE_DOES_NOT_EXIST("02", "cm-handle does not exist");
+
+        public final String errorCode;
+        public final String errorText;
+
+    }
+}
\ No newline at end of file