Ncmp Producer Setup

- Ncmp Kafka Publisher setup
- Test scenarios
- Refactored existing test class which were using kafka producer and
  consumer properties to use from common MessageSpec
- Upcoming : Implementation Proposal and Actual logic to publish the
  correct event

Issue-ID: CPS-1035
Change-Id: I93ae392e8c4e4c85d88ca7858332e79b59e85535
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>

1 files changed, 67 insertions, 0 deletions

diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsPublisher.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsPublisher.java
new file mode 100644
index 000000000..52ac4685e
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsPublisher.java
@@ -0,0 +1,67 @@
+/*
+ * ============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.api.impl.event;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.ncmp.cmhandle.lcm.event.NcmpEvent;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.support.SendResult;
+import org.springframework.stereotype.Service;
+import org.springframework.util.concurrent.ListenableFuture;
+import org.springframework.util.concurrent.ListenableFutureCallback;
+
+/**
+ * NcmpEventsPublisher to publish the NcmpEvents on event of CREATE, UPDATE and DELETE.
+ */
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class NcmpEventsPublisher {
+
+    private final KafkaTemplate<String, NcmpEvent> ncmpEventKafkaTemplate;
+
+    /**
+     * NCMP Event publisher.
+     *
+     * @param topicName valid topic name
+     * @param eventKey  message key
+     * @param ncmpEvent message payload
+     */
+    public void publishEvent(final String topicName, final String eventKey, final NcmpEvent ncmpEvent) {
+        final ListenableFuture<SendResult<String, NcmpEvent>> ncmpEventFuture =
+                ncmpEventKafkaTemplate.send(topicName, eventKey, ncmpEvent);
+
+        ncmpEventFuture.addCallback(new ListenableFutureCallback<>() {
+            @Override
+            public void onFailure(final Throwable throwable) {
+                log.error("Unable to publish event to topic : {} due to {}", topicName, throwable.getMessage());
+            }
+
+            @Override
+            public void onSuccess(final SendResult<String, NcmpEvent> result) {
+                log.debug("Successfully published event to topic : {} , NcmpEvent : {}",
+                        result.getRecordMetadata().topic(), result.getProducerRecord().value());
+            }
+        });
+    }
+}