Handle partial failure

- Removing the transaction boundaries as it was getting rollbacked on
  partial failures
- Handled adding the elements in batch and if it fails try them
  individually
- Refactored code a bit and when there is partial failure we try one
  more time in sequence and even if there are failures we collect the
  failures

Issue-ID: CPS-1232
Issue-ID: CPS-1126
Change-Id: I7824c9f37f80cbaeedd5dc06d598ca0e3a69c59b
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>

2 files changed, 35 insertions, 6 deletions

diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
index 209ade955..0eb275cf0 100755
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
@@ -59,7 +59,7 @@ import org.onap.cps.ncmp.api.models.DmiPluginRegistration;
 import org.onap.cps.ncmp.api.models.DmiPluginRegistrationResponse;
 import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
 import org.onap.cps.spi.FetchDescendantsOption;
-import org.onap.cps.spi.exceptions.AlreadyDefinedException;
+import org.onap.cps.spi.exceptions.AlreadyDefinedExceptionBatch;
 import org.onap.cps.spi.exceptions.CpsException;
 import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
 import org.onap.cps.spi.exceptions.DataValidationException;
@@ -365,12 +365,12 @@ public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService
         try {
             lcmEventsCmHandleStateHandler.updateCmHandleStateBatch(cmHandleStatePerCmHandle);
             return CmHandleRegistrationResponse.createSuccessResponses(cmHandleIds);
-        } catch (final AlreadyDefinedException alreadyDefinedException) {
-            return List.of(CmHandleRegistrationResponse.createFailureResponse(
-                    String.join(",", cmHandleIds), RegistrationError.CM_HANDLE_ALREADY_EXIST));
+        } catch (final AlreadyDefinedExceptionBatch alreadyDefinedExceptionBatch) {
+            return CmHandleRegistrationResponse.createFailureResponses(
+                    alreadyDefinedExceptionBatch.getAlreadyDefinedCmHandleIds(),
+                    RegistrationError.CM_HANDLE_ALREADY_EXIST);
         } catch (final Exception exception) {
-            return List.of(CmHandleRegistrationResponse.createFailureResponse(String.join(",", cmHandleIds),
-                    exception));
+            return CmHandleRegistrationResponse.createFailureResponses(cmHandleIds, exception);
         }
     }
 }
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
index b7faf09a9..9f8021842 100644
--- 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
@@ -21,6 +21,7 @@
 
 package org.onap.cps.ncmp.api.models;
 
+import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
 import lombok.Builder;
@@ -67,6 +68,34 @@ public class CmHandleRegistrationResponse {
             .build();
     }
 
+    /**
+     * Creates a failure response based on registration error.
+     *
+     * @param cmHandleIds       list of failed cmHandleIds
+     * @param registrationError enum describing the type of registration error
+     * @return CmHandleRegistrationResponse
+     */
+    public static List<CmHandleRegistrationResponse> createFailureResponses(final Collection<String> cmHandleIds,
+            final RegistrationError registrationError) {
+        return cmHandleIds.stream()
+                .map(cmHandleId -> CmHandleRegistrationResponse.createFailureResponse(cmHandleId, registrationError))
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * Creates a failure response based on other exception.
+     *
+     * @param cmHandleIds list of failed cmHandleIds
+     * @param exception   exception caught during the registration
+     * @return CmHandleRegistrationResponse
+     */
+    public static List<CmHandleRegistrationResponse> createFailureResponses(final Collection<String> cmHandleIds,
+            final Exception exception) {
+        return cmHandleIds.stream()
+                .map(cmHandleId -> CmHandleRegistrationResponse.createFailureResponse(cmHandleId, exception))
+                .collect(Collectors.toList());
+    }
+
     public static CmHandleRegistrationResponse createSuccessResponse(final String cmHandle) {
         return CmHandleRegistrationResponse.builder().cmHandle(cmHandle)
             .status(Status.SUCCESS).build();