gerrit.onap Code Review - policy/apex-pdp.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2020 Nordix Foundation.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.onap.policy.apex.examples.grpc;
  21
  22 import com.google.protobuf.InvalidProtocolBufferException;
  23 import com.google.protobuf.util.JsonFormat;
  24 import io.grpc.Server;
  25 import io.grpc.netty.NettyServerBuilder;
  26 import io.grpc.stub.StreamObserver;
  27 import java.io.IOException;
  28 import java.net.InetSocketAddress;
  29 import java.nio.file.Files;
  30 import java.nio.file.Paths;
  31 import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc.BluePrintProcessingServiceImplBase;
  32 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput;
  33 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
  34 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput.Builder;
  35 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
  36
  37 /**
  38  * The Class GrpcTestDummyGrpcServer creates a dummy gRPC server to mimic a CDS implementation.
  39  */
  40 public class GrpcTestDummyGrpcServer {
  41     private Server server;
  42
  43     public GrpcTestDummyGrpcServer(String host, int port) {
  44         // Implement the dummy gRPC server
  45         BluePrintProcessingServiceImplBase testCdsBlueprintServerImpl = new BluePrintProcessingServiceImplBase() {
  46             @Override
  47             public StreamObserver<ExecutionServiceInput> process(
  48                 final StreamObserver<ExecutionServiceOutput> responseObserver) {
  49                 return new StreamObserver<ExecutionServiceInput>() {
  50                     @Override
  51                     public void onNext(final ExecutionServiceInput executionServiceInput) {
  52                         String responseString = "";
  53                         try {
  54                             responseString = Files.readString(Paths.get(
  55                                 "src/main/resources/examples/events/APEXgRPC/CreateSubscriptionResponseEvent.json"));
  56                         } catch (IOException e) {
  57                             throw new ApexEventRuntimeException("Cannot read executionServiceOutput from file", e);
  58                         }
  59                         ExecutionServiceOutput executionServiceOutput;
  60                         Builder builder = ExecutionServiceOutput.newBuilder();
  61                         try {
  62                             JsonFormat.parser().ignoringUnknownFields().merge(responseString, builder);
  63                             executionServiceOutput = builder.build();
  64                             responseObserver.onNext(executionServiceOutput);
  65                         } catch (InvalidProtocolBufferException e) {
  66                             throw new ApexEventRuntimeException(
  67                                 "Output string cannot be converted to ExecutionServiceOutput type for gRPC request."
  68                                     + e);
  69                         }
  70                     }
  71
  72                     @Override
  73                     public void onError(final Throwable throwable) {
  74                         responseObserver.onError(throwable);
  75                     }
  76
  77                     @Override
  78                     public void onCompleted() {
  79                         responseObserver.onCompleted();
  80                     }
  81                 };
  82             }
  83         };
  84         server = NettyServerBuilder.forAddress(new InetSocketAddress(host, port)).addService(testCdsBlueprintServerImpl)
  85             .build();
  86     }
  87
  88     public void start() throws IOException {
  89         server.start();
  90     }
  91
  92     public void stop() {
  93         server.shutdown();
  94     }
  95 }