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/*
* ============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.api.impl;
import java.util.Map;
import java.util.UUID;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.ncmp.api.models.CmResourceAddress;
import org.onap.cps.ncmp.utils.TopicValidator;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import reactor.core.publisher.Mono;
@Slf4j
@Service
public abstract class NcmpDatastoreRequestHandler {
private static final String NO_REQUEST_ID = null;
private static final String NO_TOPIC = null;
@Value("${notification.async.executor.time-out-value-in-ms:60000}")
protected int timeOutInMilliSeconds;
@Value("${notification.enabled:true}")
protected boolean notificationFeatureEnabled;
/**
* Executes synchronous/asynchronous get request for given cm handle.
*
* @param cmResourceAddress the name of the datastore, cm handle and resource identifier
* @param options options to pass through to dmi client
* @param topic topic (optional) for asynchronous responses
* @param includeDescendants whether include descendants
* @param authorization contents of Authorization header, or null if not present
* @return the result object, depends on use op topic. With topic a map object with request id is returned
* otherwise the result of the request.
*/
public Object executeRequest(final CmResourceAddress cmResourceAddress,
final String options,
final String topic,
final boolean includeDescendants,
final String authorization) {
final boolean asyncResponseRequested = topic != null;
if (asyncResponseRequested && notificationFeatureEnabled) {
return getResourceDataAsynchronously(cmResourceAddress, options, topic, includeDescendants, authorization);
}
if (asyncResponseRequested) {
log.warn("Asynchronous request is unavailable as notification feature is currently disabled, "
+ "will use synchronous operation.");
}
final Mono<Object> resourceDataMono = getResourceDataForCmHandle(cmResourceAddress, options,
NO_TOPIC, NO_REQUEST_ID, includeDescendants, authorization);
return resourceDataMono.block();
}
private Map<String, String> getResourceDataAsynchronously(final CmResourceAddress cmResourceAddress,
final String options,
final String topic,
final boolean includeDescendants,
final String authorization) {
TopicValidator.validateTopicName(topic);
final String requestId = UUID.randomUUID().toString();
getResourceDataForCmHandle(cmResourceAddress, options, topic, requestId, includeDescendants, authorization)
.doOnSuccess(result ->
log.debug("Async operation succeeded for request id {}: {}", requestId, result))
.subscribe();
log.debug("Received Async request with id {}", requestId);
return Map.of("requestId", requestId);
}
protected abstract Mono<Object> getResourceDataForCmHandle(final CmResourceAddress cmResourceAddress,
final String optionsParamInQuery,
final String topicParamInQuery,
final String requestId,
final boolean includeDescendant,
final String authorization);
}
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