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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Copyright (C) 2021 Nokia.
* ================================================================================
* 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.dcaegen2.services.pmmapper.messagerouter;
import org.onap.dcaegen2.services.pmmapper.exceptions.MRPublisherException;
import org.onap.dcaegen2.services.pmmapper.model.Event;
import org.onap.dcaegen2.services.pmmapper.model.MapperConfig;
import org.onap.dcaegen2.services.pmmapper.utils.DmaapRequestSender;
import org.onap.dcaegen2.services.sdk.model.streams.AafCredentials;
import org.onap.dcaegen2.services.sdk.model.streams.ImmutableAafCredentials;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.DmaapResponse;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterPublishResponse;
import org.onap.logging.ref.slf4j.ONAPLogAdapter;
import org.slf4j.LoggerFactory;
import reactor.core.publisher.Flux;
import java.util.List;
import java.util.stream.Collectors;
public class VESPublisher {
private static final ONAPLogAdapter logger = new ONAPLogAdapter(LoggerFactory.getLogger(VESPublisher.class));
private final DmaapRequestSender sender;
private final MapperConfig config;
public VESPublisher(MapperConfig config) {
this(config, new DmaapRequestSender());
}
public VESPublisher(MapperConfig config, DmaapRequestSender sender) {
this.sender = sender;
this.config = config;
}
public Flux<Event> publish(List<Event> events) {
logger.unwrap().info("Publishing VES events to messagerouter.");
Event first = events.get(0);
List<String> vesEvents = minifiedVesEvents(events);
return publishEvents(vesEvents)
.filter(DmaapResponse::failed)
.takeLast(1)
.flatMap(this::toFluxError)
.defaultIfEmpty(first)
.doOnComplete(() -> logger.unwrap().info("Successfully published VES events to messagerouter."))
.onErrorResume(this::resume);
}
private List<String> minifiedVesEvents(List<Event> events) {
return events.stream()
.map(Event::getVes)
.map(vesEvent -> vesEvent.replace("\n", ""))
.collect(Collectors.toList());
}
private Flux<MessageRouterPublishResponse> publishEvents(List<String> vesEvents) {
String topicUrl = config.getPublisherTopicUrl();
AafCredentials credentials = aafCredentials();
return sender.send(topicUrl, vesEvents, credentials);
}
private Flux<Event> toFluxError(MessageRouterPublishResponse response) {
return Flux.error(new MRPublisherException(response.failReason()));
}
private Flux<Event> resume(Throwable t) {
logger.unwrap().error("Failed to publish VES event(s) to messagerouter.", t);
return Flux.empty();
}
private AafCredentials aafCredentials() {
return ImmutableAafCredentials.builder()
.username(config.getPublisherUserName())
.password(config.getPublisherPassword())
.build();
}
}
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