Fix logic and log in DMaapConsumerJsonParser

Change-Id: Idf236a1c85423f29eb3f1dc9b9f27cead80046c0
Issue-ID: DCAEGEN2-1361
Signed-off-by: Marcin Migdal <marcin.migdal@nokia.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
index b628d961..f1483321 100644
--- a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
@@ -83,9 +83,13 @@ public class DmaapConsumerJsonParser {
                 .flatMapMany(this::getConsumerDmaapModelFromJsonArray);
     }
 
-    private Flux<ConsumerDmaapModel> getConsumerDmaapModelFromJsonArray(JsonArray jsonElement) {
+    private Flux<ConsumerDmaapModel> getConsumerDmaapModelFromJsonArray(JsonArray jsonArray) {
+        if(jsonArray.size() == 0) {
+            LOGGER.debug("Nothing to consume from DMaaP");
+            return Flux.empty();
+        }
         return create(
-                Flux.defer(() -> Flux.fromStream(StreamSupport.stream(jsonElement.spliterator(), false)
+                Flux.defer(() -> Flux.fromStream(StreamSupport.stream(jsonArray.spliterator(), false)
                         .map(jsonElementFromArray -> getJsonObjectFromAnArray(jsonElementFromArray)
                                 .orElseGet(JsonObject::new)))));
     }