NcmpEvent creation and Mapping

- Mapping class to create header and event payload based on type of
  operation i.e CREATE, UPDATE and DELETE.
- Service class to get CmHandle public properties, create event and
  delegate request to event publisher.
- Modification in NcmpEvent schema json to mark field as String instead
  of URI
- Test scenarios
- UPCOMING: Call the service method from relevant code to actually
  publish the event.

Issue-ID: CPS-1037
Change-Id: I6bb7de4b27e602c4d8ee6a5528a866e5f7e8799a
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>

2 files changed, 155 insertions, 0 deletions

diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsCreator.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsCreator.java
new file mode 100644
index 0000000000..609306f08e
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsCreator.java
@@ -0,0 +1,90 @@
+/*
+ * ============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 static org.onap.ncmp.cmhandle.lcm.event.Event.CmhandleState.READY;
+import static org.onap.ncmp.cmhandle.lcm.event.Event.Operation.DELETE;
+
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+import java.util.UUID;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
+import org.onap.ncmp.cmhandle.lcm.event.Event;
+import org.onap.ncmp.cmhandle.lcm.event.Event.Operation;
+import org.onap.ncmp.cmhandle.lcm.event.NcmpEvent;
+import org.springframework.stereotype.Component;
+
+
+/**
+ * NcmpEventsCreator to create NcmpEvent based on relevant operation.
+ */
+@Slf4j
+@Component
+public class NcmpEventsCreator {
+
+
+    /**
+     * Populate NcmpEvent.
+     *
+     * @param cmHandleId          Cm Handle Identifier
+     * @param operation           Relevant Operation
+     * @param ncmpServiceCmHandle Ncmp CmHandle Data
+     * @return Populated NcmpEvent
+     */
+    public NcmpEvent populateNcmpEvent(final String cmHandleId, final Operation operation,
+            final NcmpServiceCmHandle ncmpServiceCmHandle) {
+        return createNcmpEvent(cmHandleId, operation, ncmpServiceCmHandle);
+    }
+
+    private NcmpEvent createNcmpEvent(final String cmHandleId, final Operation operation,
+            final NcmpServiceCmHandle ncmpServiceCmHandle) {
+        final NcmpEvent ncmpEvent = ncmpEventHeader(cmHandleId);
+        ncmpEvent.setEvent(ncmpEventPayload(cmHandleId, operation, ncmpServiceCmHandle));
+        return ncmpEvent;
+    }
+
+    private Event ncmpEventPayload(final String eventCorrelationId, final Operation operation,
+            final NcmpServiceCmHandle ncmpServiceCmHandle) {
+        final Event event = new Event();
+        event.setOperation(operation);
+        event.setCmHandleId(eventCorrelationId);
+
+        if (!DELETE.equals(operation)) {
+            event.setCmhandleState(READY);
+            event.setCmhandleProperties(List.of(ncmpServiceCmHandle.getPublicProperties()));
+        }
+        return event;
+    }
+
+    private NcmpEvent ncmpEventHeader(final String eventCorrelationId) {
+        final NcmpEvent ncmpEvent = new NcmpEvent();
+        ncmpEvent.setEventId(UUID.randomUUID().toString());
+        ncmpEvent.setEventCorrelationId(eventCorrelationId);
+        ncmpEvent.setEventTime(ZonedDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ")));
+        ncmpEvent.setEventSource("org.onap.ncmp");
+        ncmpEvent.setEventType("org.onap.ncmp.cmhandle-lcm-event");
+        ncmpEvent.setEventSchema("org.onap.ncmp:cmhandle-lcm-event:v1");
+        return ncmpEvent;
+    }
+
+}
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsService.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsService.java
new file mode 100644
index 0000000000..045a67a104
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/NcmpEventsService.java
@@ -0,0 +1,65 @@
+/*
+ * ============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.cps.ncmp.api.impl.utils.YangDataConverter;
+import org.onap.cps.ncmp.api.inventory.InventoryPersistence;
+import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
+import org.onap.ncmp.cmhandle.lcm.event.Event.Operation;
+import org.onap.ncmp.cmhandle.lcm.event.NcmpEvent;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+/**
+ * NcmpEventService to map the event correctly and publish to the public topic.
+ */
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class NcmpEventsService {
+
+    private final InventoryPersistence inventoryPersistence;
+
+    private final NcmpEventsPublisher ncmpEventsPublisher;
+
+    private final NcmpEventsCreator ncmpEventsCreator;
+
+    @Value("${app.ncmp.events.topic:ncmp-events}")
+    private String topicName;
+
+    /**
+     * Publish the NcmpEvent to the public topic.
+     *
+     * @param cmHandleId Cm Handle Id
+     * @param operation  Relevant operation(CREATE,UPDATE or DELETE)
+     */
+    public void publishNcmpEvent(final String cmHandleId, final Operation operation) {
+
+        final NcmpServiceCmHandle ncmpServiceCmHandle = YangDataConverter.convertYangModelCmHandleToNcmpServiceCmHandle(
+                inventoryPersistence.getYangModelCmHandle(cmHandleId));
+        final NcmpEvent ncmpEvent = ncmpEventsCreator.populateNcmpEvent(cmHandleId, operation, ncmpServiceCmHandle);
+        ncmpEventsPublisher.publishEvent(topicName, cmHandleId, ncmpEvent);
+
+    }
+}