1 files changed, 102 insertions, 0 deletions
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/impl/data/NcmpPassthroughResourceRequestHandler.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/impl/data/NcmpPassthroughResourceRequestHandler.java
new file mode 100644
index 000000000..be2dde230
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/impl/data/NcmpPassthroughResourceRequestHandler.java
@@ -0,0 +1,102 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022-2024 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.impl.data;
+
+import static org.onap.cps.ncmp.api.data.models.DatastoreType.OPERATIONAL;
+import static org.onap.cps.ncmp.api.data.models.OperationType.READ;
+
+import java.util.Map;
+import java.util.UUID;
+import lombok.RequiredArgsConstructor;
+import org.onap.cps.ncmp.api.data.exceptions.InvalidDatastoreException;
+import org.onap.cps.ncmp.api.data.exceptions.OperationNotSupportedException;
+import org.onap.cps.ncmp.api.data.models.CmResourceAddress;
+import org.onap.cps.ncmp.api.data.models.DataOperationRequest;
+import org.onap.cps.ncmp.api.data.models.DatastoreType;
+import org.onap.cps.ncmp.api.data.models.OperationType;
+import org.onap.cps.ncmp.exceptions.PayloadTooLargeException;
+import org.onap.cps.ncmp.utils.events.TopicValidator;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Mono;
+
+@Service
+@RequiredArgsConstructor
+public class NcmpPassthroughResourceRequestHandler extends NcmpDatastoreRequestHandler {
+
+    private final DmiDataOperations dmiDataOperations;
+
+    private static final int MAXIMUM_CM_HANDLES_PER_OPERATION = 200;
+    private static final String PAYLOAD_TOO_LARGE_TEMPLATE = "Operation '%s' affects too many (%d) cm handles";
+
+    /**
+     * Executes asynchronous request for group of cm handles to resource data.
+     *
+     * @param topic                 the topic param in query
+     * @param dataOperationRequest  data operation request details for resource data
+     * @param authorization         contents of Authorization header, or null if not present
+     * @return a map with one entry of request Id for success or status and error when async feature is disabled
+     */
+    public Map<String, String> executeAsynchronousRequest(final String topic,
+                                                          final DataOperationRequest dataOperationRequest,
+                                                          final String authorization) {
+        validateDataOperationRequest(topic, dataOperationRequest);
+        if (!notificationFeatureEnabled) {
+            return Map.of("status",
+                "Asynchronous request is unavailable as notification feature is currently disabled.");
+        }
+        final String requestId = UUID.randomUUID().toString();
+        dmiDataOperations.requestResourceDataFromDmi(topic, dataOperationRequest, requestId, authorization);
+        return Map.of("requestId", requestId);
+    }
+
+    @Override
+    protected Mono<Object> getResourceDataForCmHandle(final CmResourceAddress cmResourceAddress,
+                                                      final String options,
+                                                      final String topic,
+                                                      final String requestId,
+                                                      final boolean includeDescendants,
+                                                      final String authorization) {
+
+        return dmiDataOperations.getResourceDataFromDmi(cmResourceAddress, options, topic, requestId, authorization)
+            .flatMap(responseEntity -> Mono.justOrEmpty(responseEntity.getBody()));
+    }
+
+    private void validateDataOperationRequest(final String topicParamInQuery,
+                                              final DataOperationRequest dataOperationRequest) {
+        TopicValidator.validateTopicName(topicParamInQuery);
+        dataOperationRequest.getDataOperationDefinitions().forEach(dataOperationDefinition -> {
+            if (OperationType.fromOperationName(dataOperationDefinition.getOperation()) != READ) {
+                throw new OperationNotSupportedException(
+                        dataOperationDefinition.getOperation() + " operation not yet supported");
+            }
+            if (DatastoreType.fromDatastoreName(dataOperationDefinition.getDatastore()) == OPERATIONAL) {
+                throw new InvalidDatastoreException(dataOperationDefinition.getDatastore()
+                        + " datastore is not supported");
+            }
+            if (dataOperationDefinition.getCmHandleIds().size() > MAXIMUM_CM_HANDLES_PER_OPERATION) {
+                final String errorMessage = String.format(PAYLOAD_TOO_LARGE_TEMPLATE,
+                        dataOperationDefinition.getOperationId(),
+                        dataOperationDefinition.getCmHandleIds().size());
+                throw new PayloadTooLargeException(errorMessage);
+            }
+        });
+    }
+}