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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019-2021 Bell Canada.
* Modifications 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.cds.client;
import io.grpc.ManagedChannel;
import io.grpc.stub.StreamObserver;
import java.util.concurrent.CountDownLatch;
import org.onap.ccsdk.cds.controllerblueprints.common.api.ActionIdentifiers;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BlueprintProcessingServiceGrpc;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BlueprintProcessingServiceGrpc.BlueprintProcessingServiceStub;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
import org.onap.policy.cds.api.CdsProcessorListener;
import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
import org.onap.policy.common.endpoints.utils.NetLoggerUtil;
import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CdsProcessorHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(CdsProcessorHandler.class);
private static final String LOG_MSG = "[{}|{}|{}|]{}{}";
private CdsProcessorListener listener;
private String url;
CdsProcessorHandler(final CdsProcessorListener listener, String url) {
this.listener = listener;
this.url = url;
}
CountDownLatch process(ExecutionServiceInput request, ManagedChannel channel) {
final ActionIdentifiers header = request.getActionIdentifiers();
LOGGER.info("Processing blueprint({}:{}) for action({})", header.getBlueprintVersion(),
header.getBlueprintName(), header.getBlueprintVersion());
final var finishLatch = new CountDownLatch(1);
final BlueprintProcessingServiceStub asyncStub = BlueprintProcessingServiceGrpc.newStub(channel);
final StreamObserver<ExecutionServiceOutput> responseObserver = new StreamObserver<>() {
@Override
public void onNext(ExecutionServiceOutput output) {
NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, url, output.toString());
listener.onMessage(output);
}
@Override
public void onError(Throwable throwable) {
LOGGER.info(LOG_MSG, EventType.IN, CommInfrastructure.REST, url, NetLoggerUtil.SYSTEM_LS,
throwable);
listener.onError(throwable);
finishLatch.countDown();
}
@Override
public void onCompleted() {
LOGGER.info("Completed blueprint({}:{}) for action({})", header.getBlueprintVersion(),
header.getBlueprintName(), header.getBlueprintVersion());
finishLatch.countDown();
}
};
final StreamObserver<ExecutionServiceInput> requestObserver = asyncStub.process(responseObserver);
try {
NetLoggerUtil.log(EventType.OUT, CommInfrastructure.REST, url, request.toString());
// Send the message to CDS backend for processing
requestObserver.onNext(request);
// Mark the end of requests
requestObserver.onCompleted();
} catch (RuntimeException e) {
requestObserver.onError(e);
}
return finishLatch;
}
}
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