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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA Intellectual Property. 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.dcaegen2.services.prh.tasks;
import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.INSTANCE_UUID;
import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.RESPONSE_CODE;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;
import java.util.function.Predicate;
import org.onap.dcaegen2.services.prh.adapter.aai.api.ConsumerDmaapModel;
import org.onap.dcaegen2.services.prh.exceptions.DmaapEmptyResponseException;
import org.onap.dcaegen2.services.prh.exceptions.PrhTaskException;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterPublishResponse;
import org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
/**
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/23/18
*/
@Component
public class ScheduledTasks {
private static final Logger LOGGER = LoggerFactory.getLogger(ScheduledTasks.class);
private static final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
private final DmaapConsumerTask dmaapConsumerTask;
private final DmaapPublisherTask dmaapReadyProducerTask;
private final DmaapPublisherTask dmaapUpdateProducerTask;
private final AaiQueryTask aaiQueryTask;
private final AaiProducerTask aaiProducerTask;
private final BbsActionsTask bbsActionsTask;
private Map<String, String> mdcContextMap;
/**
* Constructor for tasks registration in PRHWorkflow.
*
* @param dmaapConsumerTask - fist task
* @param dmaapReadyPublisherTask - third task
* @param dmaapUpdatePublisherTask - fourth task
* @param aaiPublisherTask - second task
*/
@Autowired
public ScheduledTasks(
final DmaapConsumerTask dmaapConsumerTask,
@Qualifier("ReadyPublisherTask") final DmaapPublisherTask dmaapReadyPublisherTask,
@Qualifier("UpdatePublisherTask") final DmaapPublisherTask dmaapUpdatePublisherTask,
final AaiQueryTask aaiQueryTask,
final AaiProducerTask aaiPublisherTask,
final BbsActionsTask bbsActionsTask,
final Map<String, String> mdcContextMap) {
this.dmaapConsumerTask = dmaapConsumerTask;
this.dmaapReadyProducerTask = dmaapReadyPublisherTask;
this.dmaapUpdateProducerTask = dmaapUpdatePublisherTask;
this.aaiQueryTask = aaiQueryTask;
this.aaiProducerTask = aaiPublisherTask;
this.bbsActionsTask = bbsActionsTask;
this.mdcContextMap = mdcContextMap;
}
static class State {
public final ConsumerDmaapModel dmaapModel;
public final Boolean activationStatus;
public State(final ConsumerDmaapModel dmaapModel, final Boolean activationStatus) {
this.dmaapModel = dmaapModel;
this.activationStatus = activationStatus;
}
}
/**
* Main function for scheduling prhWorkflow.
*/
public void scheduleMainPrhEventTask() {
MdcVariables.setMdcContextMap(mdcContextMap);
try {
LOGGER.trace("Execution of tasks was registered");
CountDownLatch mainCountDownLatch = new CountDownLatch(1);
consumeFromDMaaPMessage()
.doOnError(DmaapEmptyResponseException.class, error ->
LOGGER.warn("Nothing to consume from DMaaP")
)
.flatMap(this::queryAaiForConfiguration)
.flatMap(this::publishToAaiConfiguration)
.flatMap(this::processAdditionalFields)
.flatMap(this::publishToDmaapConfiguration)
.onErrorResume(resumePrhPredicate(), exception -> Mono.empty())
.doOnTerminate(mainCountDownLatch::countDown)
.subscribe(this::onSuccess, this::onError, this::onComplete);
mainCountDownLatch.await();
} catch (InterruptedException e) {
LOGGER.warn("Interruption problem on countDownLatch ", e);
Thread.currentThread().interrupt();
}
}
private void onComplete() {
LOGGER.info("PRH tasks have been completed");
}
private void onSuccess(MessageRouterPublishResponse response) {
if (response.successful()) {
String statusCodeOk = HttpStatus.OK.name();
MDC.put(RESPONSE_CODE, statusCodeOk);
LOGGER.info("Prh consumed tasks successfully. HTTP Response code from DMaaPProducer {}", statusCodeOk);
MDC.remove(RESPONSE_CODE);
}
}
private void onError(Throwable throwable) {
if (!(throwable instanceof DmaapEmptyResponseException)) {
LOGGER.warn("Chain of tasks have been aborted due to errors in PRH workflow", throwable);
}
}
private Flux<ConsumerDmaapModel> consumeFromDMaaPMessage() {
return Flux.defer(() -> {
MdcVariables.setMdcContextMap(mdcContextMap);
MDC.put(INSTANCE_UUID, UUID.randomUUID().toString());
LOGGER.info(INVOKE, "Init configs");
return dmaapConsumerTask.execute();
});
}
private Mono<State> queryAaiForConfiguration(final ConsumerDmaapModel monoDMaaPModel) {
return aaiQueryTask
.execute(monoDMaaPModel)
.map(x -> new State(monoDMaaPModel, x));
}
private Mono<State> publishToAaiConfiguration(final State state) {
try {
return aaiProducerTask
.execute(state.dmaapModel)
.map(x -> state);
} catch (PrhTaskException e) {
LOGGER.warn("AAIProducerTask exception has been registered: ", e);
return Mono.error(e);
}
}
private Mono<State> processAdditionalFields(final State state) {
if (state.activationStatus) {
LOGGER.debug("Re-registration - Logical links won't be updated.");
return Mono.just(state);
}
return bbsActionsTask.execute(state.dmaapModel).map(x -> state);
}
private Flux<MessageRouterPublishResponse> publishToDmaapConfiguration(final State state) {
try {
if (state.activationStatus) {
LOGGER.debug("Re-registration - Using PNF_UPDATE DMaaP topic.");
return dmaapUpdateProducerTask.execute(state.dmaapModel);
}
return dmaapReadyProducerTask.execute(state.dmaapModel);
} catch (PrhTaskException e) {
LOGGER.warn("DMaaPProducerTask exception has been registered: ", e);
return Flux.error(e);
}
}
private Predicate<Throwable> resumePrhPredicate() {
return exception -> exception instanceof PrhTaskException;
}
}
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