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/*
* ============LICENSE_START=======================================================
* Copyright (c) 2021 Bell Canada.
* ================================================================================
* 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.cps.temporal.controller.event.listener.kafka;
import static org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException.InvalidField.ErrorType.MISSING;
import static org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException.InvalidField.ErrorType.UNEXPECTED;
import java.net.URI;
import java.net.URISyntaxException;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.event.model.CpsDataUpdatedEvent;
import org.onap.cps.temporal.controller.event.listener.exception.EventListenerException;
import org.onap.cps.temporal.controller.event.listener.exception.InvalidEventEnvelopException;
import org.onap.cps.temporal.controller.event.model.CpsDataUpdatedEventMapper;
import org.onap.cps.temporal.service.NetworkDataService;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
/**
* Listener for data updated events.
*/
@Component
@Slf4j
public class DataUpdatedEventListener {
private static final URI EVENT_SOURCE;
static {
try {
EVENT_SOURCE = new URI("urn:cps:org.onap.cps");
} catch (final URISyntaxException e) {
throw new EventListenerException("Invalid URI for event source.", e);
}
}
private static final String EVENT_TYPE = "org.onap.cps.data-updated-event";
private final NetworkDataService networkDataService;
private final CpsDataUpdatedEventMapper cpsDataUpdatedEventMapper;
/**
* Constructor.
*/
public DataUpdatedEventListener(
final NetworkDataService networkDataService, final CpsDataUpdatedEventMapper cpsDataUpdatedEventMapper) {
this.networkDataService = networkDataService;
this.cpsDataUpdatedEventMapper = cpsDataUpdatedEventMapper;
}
/**
* Consume the specified event.
*
* @param cpsDataUpdatedEvent the data updated event to be consumed and persisted.
*/
@KafkaListener(topics = "${app.listener.data-updated.topic}", errorHandler = "dataUpdatedEventListenerErrorHandler")
public void consume(final CpsDataUpdatedEvent cpsDataUpdatedEvent) {
log.debug("Receiving {} ...", cpsDataUpdatedEvent);
// Validate event envelop
validateEventEnvelop(cpsDataUpdatedEvent);
// Map event to entity
final var networkData = this.cpsDataUpdatedEventMapper.eventToEntity(cpsDataUpdatedEvent);
log.debug("Persisting {} ...", networkData);
// Persist entity
final var persistedNetworkData = this.networkDataService.addNetworkData(networkData);
log.debug("Persisted {}", persistedNetworkData);
}
private void validateEventEnvelop(final CpsDataUpdatedEvent cpsDataUpdatedEvent) {
final var invalidEventEnvelopException =
new InvalidEventEnvelopException("Validation failure", cpsDataUpdatedEvent);
// Validate schema
if (cpsDataUpdatedEvent.getSchema() == null) {
invalidEventEnvelopException.addInvalidField(
new InvalidEventEnvelopException.InvalidField(
MISSING, "schema", null,
CpsDataUpdatedEvent.Schema.URN_CPS_ORG_ONAP_CPS_DATA_UPDATED_EVENT_SCHEMA_1_1_0_SNAPSHOT
.value()));
}
// Validate id
if (!StringUtils.hasText(cpsDataUpdatedEvent.getId())) {
invalidEventEnvelopException.addInvalidField(
new InvalidEventEnvelopException.InvalidField(
MISSING, "id", null, null));
}
// Validate source
if (!EVENT_SOURCE.equals(cpsDataUpdatedEvent.getSource())) {
invalidEventEnvelopException.addInvalidField(
new InvalidEventEnvelopException.InvalidField(
UNEXPECTED, "source",
cpsDataUpdatedEvent.getSource() != null
? cpsDataUpdatedEvent.getSource().toString() : null, EVENT_SOURCE.toString()));
}
// Validate type
if (!EVENT_TYPE.equals(cpsDataUpdatedEvent.getType())) {
invalidEventEnvelopException.addInvalidField(
new InvalidEventEnvelopException.InvalidField(
UNEXPECTED, "type", cpsDataUpdatedEvent.getType(), EVENT_TYPE));
}
if (invalidEventEnvelopException.hasInvalidFields()) {
throw invalidEventEnvelopException;
}
}
}
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