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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 - 2019 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.so.client.cds;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
class CDSProcessingHandler {
private static final Logger log = LoggerFactory.getLogger(CDSProcessingHandler.class);
private CDSProcessingListener listener;
CDSProcessingHandler(final CDSProcessingListener listener) {
this.listener = listener;
}
CountDownLatch process(ExecutionServiceInput request, ManagedChannel channel) {
ActionIdentifiers header = request.getActionIdentifiers();
log.info("Processing blueprint({}:{}) for action({})", header.getBlueprintVersion(), header.getBlueprintName(),
header.getActionName());
final CountDownLatch finishLatch = new CountDownLatch(1);
final BlueprintProcessingServiceStub asyncStub = BlueprintProcessingServiceGrpc.newStub(channel);
final StreamObserver<ExecutionServiceOutput> responseObserver = new StreamObserver<ExecutionServiceOutput>() {
@Override
public void onNext(ExecutionServiceOutput output) {
listener.onMessage(output);
}
@Override
public void onError(Throwable t) {
listener.onError(t);
finishLatch.countDown();
}
@Override
public void onCompleted() {
log.info("Completed blueprint({}:{}) for action({})", header.getBlueprintVersion(),
header.getBlueprintName(), header.getBlueprintVersion());
finishLatch.countDown();
}
};
final StreamObserver<ExecutionServiceInput> requestObserver = asyncStub.process(responseObserver);
try {
// Send our 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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