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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2020 AT&T 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.policy.controlloop.actorserviceprovider.impl;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Function;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.common.endpoints.event.comm.client.BidirectionalTopicClientException;
import org.onap.policy.controlloop.actorserviceprovider.Util;
import org.onap.policy.controlloop.actorserviceprovider.parameters.BidirectionalTopicActorParams;
import org.onap.policy.controlloop.actorserviceprovider.topic.BidirectionalTopicHandler;
import org.onap.policy.controlloop.actorserviceprovider.topic.BidirectionalTopicManager;
/**
* Actor that uses a bidirectional topic. The actor's parameters must be a
* {@link BidirectionalTopicActorParams}.
*/
public class BidirectionalTopicActor extends ActorImpl implements BidirectionalTopicManager {
/**
* Maps a pair of sink and source topic names to their bidirectional topic.
*/
private final Map<Pair<String, String>, BidirectionalTopicHandler> params2topic = new ConcurrentHashMap<>();
/**
* Constructs the object.
*
* @param name actor's name
*/
public BidirectionalTopicActor(String name) {
super(name);
}
@Override
protected void doStart() {
params2topic.values().forEach(BidirectionalTopicHandler::start);
super.doStart();
}
@Override
protected void doStop() {
params2topic.values().forEach(BidirectionalTopicHandler::stop);
super.doStop();
}
@Override
protected void doShutdown() {
params2topic.values().forEach(BidirectionalTopicHandler::shutdown);
params2topic.clear();
super.doShutdown();
}
@Override
public BidirectionalTopicHandler getTopicHandler(String sinkTopic, String sourceTopic) {
Pair<String, String> key = Pair.of(sinkTopic, sourceTopic);
return params2topic.computeIfAbsent(key, pair -> {
try {
return makeTopicHandler(sinkTopic, sourceTopic);
} catch (BidirectionalTopicClientException e) {
throw new IllegalArgumentException(e);
}
});
}
/**
* Translates the parameters to a {@link BidirectionalTopicActorParams} and then
* creates a function that will extract operator-specific parameters.
*/
@Override
protected Function<String, Map<String, Object>> makeOperatorParameters(Map<String, Object> actorParameters) {
String actorName = getName();
// @formatter:off
return Util.translate(actorName, actorParameters, BidirectionalTopicActorParams.class)
.doValidation(actorName)
.makeOperationParameters(actorName);
// @formatter:on
}
// may be overridden by junit tests
protected BidirectionalTopicHandler makeTopicHandler(String sinkTopic, String sourceTopic)
throws BidirectionalTopicClientException {
return new BidirectionalTopicHandler(sinkTopic, sourceTopic);
}
}
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