1 files changed, 106 insertions, 0 deletions
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/avc/SubscriptionEventForwarder.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/avc/SubscriptionEventForwarder.java
new file mode 100644
index 000000000..635059bfe
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/event/avc/SubscriptionEventForwarder.java
@@ -0,0 +1,106 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 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.avc;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.api.impl.event.EventsPublisher;
+import org.onap.cps.ncmp.api.impl.operations.RequiredDmiService;
+import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle;
+import org.onap.cps.ncmp.api.inventory.InventoryPersistence;
+import org.onap.cps.ncmp.event.model.SubscriptionEvent;
+import org.onap.cps.spi.exceptions.OperationNotYetSupportedException;
+import org.springframework.stereotype.Component;
+
+
+@Component
+@Slf4j
+@RequiredArgsConstructor
+public class SubscriptionEventForwarder {
+
+    private final InventoryPersistence inventoryPersistence;
+    private final EventsPublisher<SubscriptionEvent> eventsPublisher;
+
+    private static final String DMI_AVC_SUBSCRIPTION_TOPIC_PREFIX = "ncmp-dmi-cm-avc-subscription-";
+
+    /**
+     * Forward subscription event.
+     *
+     * @param subscriptionEvent the event to be forwarded
+     */
+    public void forwardCreateSubscriptionEvent(final SubscriptionEvent subscriptionEvent) {
+        final List<Object> cmHandleTargets = subscriptionEvent.getEvent().getPredicates().getTargets();
+        if (cmHandleTargets == null || cmHandleTargets.isEmpty()
+            || cmHandleTargets.stream().anyMatch(id -> ((String) id).contains("*"))) {
+            throw new OperationNotYetSupportedException(
+                "CMHandle targets are required. \"Wildcard\" operations are not yet supported");
+        }
+        final List<String> cmHandleTargetsAsStrings = cmHandleTargets.stream().map(
+            Objects::toString).collect(Collectors.toList());
+        final Collection<YangModelCmHandle> yangModelCmHandles =
+            inventoryPersistence.getYangModelCmHandles(cmHandleTargetsAsStrings);
+        final Map<String, Map<String, Map<String, String>>> dmiNameCmHandleMap =
+            organizeByDmiName(yangModelCmHandles);
+        dmiNameCmHandleMap.forEach((dmiName, cmHandlePropertiesMap) -> {
+            subscriptionEvent.getEvent().getPredicates().setTargets(Collections.singletonList(cmHandlePropertiesMap));
+            final String eventKey = createEventKey(subscriptionEvent, dmiName);
+            eventsPublisher.publishEvent(DMI_AVC_SUBSCRIPTION_TOPIC_PREFIX + dmiName, eventKey, subscriptionEvent);
+        });
+    }
+
+    private Map<String, Map<String, Map<String, String>>> organizeByDmiName(
+        final Collection<YangModelCmHandle> yangModelCmHandles) {
+        final Map<String, Map<String, Map<String, String>>> dmiNameCmHandlePropertiesMap = new HashMap<>();
+        yangModelCmHandles.forEach(cmHandle -> {
+            final String dmiName = cmHandle.resolveDmiServiceName(RequiredDmiService.DATA);
+            if (!dmiNameCmHandlePropertiesMap.containsKey(dmiName)) {
+                final Map<String, Map<String, String>> cmHandleDmiPropertiesMap = new HashMap<>();
+                cmHandleDmiPropertiesMap.put(cmHandle.getId(), dmiPropertiesAsMap(cmHandle));
+                dmiNameCmHandlePropertiesMap.put(cmHandle.getDmiDataServiceName(), cmHandleDmiPropertiesMap);
+            } else {
+                dmiNameCmHandlePropertiesMap.get(cmHandle.getDmiDataServiceName())
+                    .put(cmHandle.getId(), dmiPropertiesAsMap(cmHandle));
+            }
+        });
+        return dmiNameCmHandlePropertiesMap;
+    }
+
+    private String createEventKey(final SubscriptionEvent subscriptionEvent, final String dmiName) {
+        return subscriptionEvent.getEvent().getSubscription().getClientID()
+            + "-"
+            + subscriptionEvent.getEvent().getSubscription().getName()
+            + "-"
+            + dmiName;
+    }
+
+    public Map<String, String> dmiPropertiesAsMap(final YangModelCmHandle yangModelCmHandle) {
+        return yangModelCmHandle.getDmiProperties().stream().collect(
+            Collectors.toMap(YangModelCmHandle.Property::getName, YangModelCmHandle.Property::getValue));
+    }
+
+}