models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/CdsSimulatorTest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP
   4  * ================================================================================
   5  * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
   6  * Modifications Copyright (C) 2020-2021 Bell Canada. All rights reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.onap.policy.simulators;
  23
  24 import static org.junit.Assert.assertEquals;
  25 import static org.junit.Assert.assertTrue;
  26
  27 import com.google.protobuf.TextFormat.ParseException;
  28 import com.google.protobuf.util.JsonFormat;
  29 import io.grpc.ManagedChannel;
  30 import io.grpc.netty.NettyChannelBuilder;
  31 import io.grpc.stub.StreamObserver;
  32 import java.io.IOException;
  33 import java.nio.charset.StandardCharsets;
  34 import java.util.concurrent.CompletableFuture;
  35 import java.util.concurrent.CountDownLatch;
  36 import java.util.concurrent.TimeUnit;
  37 import org.apache.commons.io.IOUtils;
  38 import org.junit.After;
  39 import org.junit.Before;
  40 import org.junit.Test;
  41 import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc;
  42 import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc.BluePrintProcessingServiceStub;
  43 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput;
  44 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput.Builder;
  45 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
  46 import org.onap.policy.common.utils.coder.CoderException;
  47 import org.onap.policy.common.utils.coder.StandardCoder;
  48 import org.onap.policy.common.utils.network.NetworkUtil;
  49 import org.onap.policy.common.utils.resources.ResourceUtils;
  50
  51 public class CdsSimulatorTest {
  52     private static final StandardCoder coder = new StandardCoder();
  53
  54     private CdsSimulator sim;
  55
  56     /**
  57      * Starts the simulator, allocating a unique port for each test so we don't have to
  58      * wait for the prior server to shut down.
  59      */
  60     @Before
  61     public void setUp() throws Exception {
  62         int port = NetworkUtil.allocPort();
  63         sim = new CdsSimulator(Util.LOCALHOST, port);
  64         sim.start();
  65     }
  66
  67     @After
  68     public void tearDown() {
  69         sim.stop();
  70     }
  71
  72     @Test
  73     public void test() throws Exception {
  74         String reqstr = IOUtils.toString(getClass().getResource("cds/cds.request.json"), StandardCharsets.UTF_8);
  75         Builder builder = ExecutionServiceInput.newBuilder();
  76         JsonFormat.parser().ignoringUnknownFields().merge(reqstr, builder);
  77         ExecutionServiceInput request = builder.build();
  78         ManagedChannel channel = NettyChannelBuilder.forAddress(Util.LOCALHOST, sim.getPort()).usePlaintext().build();
  79
  80         try {
  81             final CompletableFuture<ExecutionServiceOutput> future = new CompletableFuture<>();
  82             final CountDownLatch completed = new CountDownLatch(1);
  83
  84             BluePrintProcessingServiceStub asyncStub = BluePrintProcessingServiceGrpc.newStub(channel);
  85
  86             StreamObserver<ExecutionServiceOutput> responseObserver = new StreamObserver<ExecutionServiceOutput>() {
  87                 @Override
  88                 public void onNext(ExecutionServiceOutput output) {
  89                     future.complete(output);
  90                 }
  91
  92                 @Override
  93                 public void onError(Throwable throwable) {
  94                     future.completeExceptionally(throwable);
  95                 }
  96
  97                 @Override
  98                 public void onCompleted() {
  99                     completed.countDown();
 100                 }
 101             };
 102
 103             StreamObserver<ExecutionServiceInput> requestObserver = asyncStub.process(responseObserver);
 104             try {
 105                 // publish the message
 106                 requestObserver.onNext(request);
 107
 108                 // indicate that the request is done
 109                 requestObserver.onCompleted();
 110
 111             } catch (RuntimeException e) {
 112                 requestObserver.onError(e);
 113             }
 114
 115             // wait for it to complete
 116             assertTrue(completed.await(5, TimeUnit.SECONDS));
 117
 118             ExecutionServiceOutput result = future.get();
 119             assertEquals(200, result.getStatus().getCode());
 120
 121         } finally {
 122             channel.shutdown();
 123         }
 124     }
 125
 126     @Test
 127     public void testGetResponse() throws IOException, CoderException, ParseException {
 128         CdsSimulator cdsSimulator = new CdsSimulator(Util.LOCALHOST, sim.getPort());
 129         String reqstr = ResourceUtils.getResourceAsString(
 130             "org/onap/policy/simulators/cds/cds.request.json");
 131         String responseqstr = ResourceUtils.getResourceAsString(
 132             "org/onap/policy/simulators/cds/pm_control-create-subscription.json");
 133         ExecutionServiceInput request = coder.decode(reqstr, ExecutionServiceInput.class);
 134         org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput.Builder esoBuilder =
 135             ExecutionServiceOutput.newBuilder();
 136         JsonFormat.parser().ignoringUnknownFields().merge(responseqstr, esoBuilder);
 137         assertEquals(esoBuilder.toString(), cdsSimulator.getResponse(request, 0).toString());
 138     }
 139 }