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/*
* ============LICENSE_START=======================================================
* VES Collector
* ================================================================================
* Copyright (C) 2021 Nokia. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.common.validator;
import io.vavr.control.Try;
import org.json.JSONException;
import org.onap.dcae.common.model.VesEvent;
import org.onap.dcae.restapi.ApiException;
import org.onap.dcae.restapi.EventValidatorException;
import java.util.List;
import static java.util.stream.Collectors.toSet;
import static org.onap.dcae.restapi.ApiException.DIFFERENT_DOMAIN_FIELDS_IN_BATCH_EVENT;
import static org.onap.dcae.restapi.ApiException.DIFFERENT_STND_DEFINED_NAMESPACE_WHEN_DOMAIN_STND_DEFINED;
public class BatchEventValidator {
private BatchEventValidator() {
}
/**
* Check if value of domain fields are the same in every event,
* in case of stndDefined check stndDefinedNamespace fields
*
* @param events list of checked ves events
* @throws EventValidatorException when domain fields value or stndDefinedNamespace fields value are note the same
*/
public static void executeBatchEventValidation(List<VesEvent> events) throws EventValidatorException {
if (hasNotEveryEventSameDomain(events)) {
throw new EventValidatorException(DIFFERENT_DOMAIN_FIELDS_IN_BATCH_EVENT);
}
if (isDomainStndDefined(events) && hasNotSameStndDefinedNamespace(events)) {
throw new EventValidatorException(DIFFERENT_STND_DEFINED_NAMESPACE_WHEN_DOMAIN_STND_DEFINED);
}
}
private static boolean hasNotEveryEventSameDomain(List<VesEvent> events) {
return events.stream()
.map(VesEvent::getDomain)
.collect(toSet())
.size() != 1;
}
private static boolean hasNotSameStndDefinedNamespace(List<VesEvent> events) {
return Try.of(() -> isAllStndDefinedNamespace(events))
.getOrElseThrow(() -> new EventValidatorException(ApiException.MISSING_NAMESPACE_PARAMETER));
}
private static boolean isAllStndDefinedNamespace(List<VesEvent> events) {
return events.stream()
.map(e -> e.getStndDefinedNamespace().orElse(""))
.collect(toSet())
.size() != 1;
}
private static boolean isDomainStndDefined(List<VesEvent> events) throws JSONException{
return events.stream()
.allMatch((e -> e.getDomain().equals("stndDefined")));
}
}
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