content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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.
   */
  package org.apache.causeway.testdomain.rest.jdo;
  
  import java.util.stream.IntStream;
  
  import jakarta.inject.Inject;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.boot.test.web.server.LocalServerPort;
  import org.springframework.context.annotation.Import;
  import org.springframework.test.context.TestPropertySource;
  
  import org.apache.causeway.commons.internal.base._Timing;
  import org.apache.causeway.commons.internal.debug.swt._Swt;
  import org.apache.causeway.core.config.presets.CausewayPresets;
  import org.apache.causeway.testdomain.jdo.conf.Configuration_usingJdo;
  import org.apache.causeway.testdomain.jdo.rest.JdoRestEndpointService;
  import org.apache.causeway.testing.unittestsupport.applib.annotations.DisabledIfRunningWithSurefire;
  import org.apache.causeway.viewer.restfulobjects.client.RestfulClient;
  import org.apache.causeway.viewer.restfulobjects.jaxrsresteasy.CausewayModuleViewerRestfulObjectsJaxrsResteasy;
  
  import lombok.extern.log4j.Log4j2;
  
  @SpringBootTest(
          classes = {JdoRestEndpointService.class},
          webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
  @TestPropertySource(CausewayPresets.UseLog4j2Test)
  @Import({
      Configuration_usingJdo.class,
      CausewayModuleViewerRestfulObjectsJaxrsResteasy.class
  })
  @DisabledIfRunningWithSurefire
  @Log4j2
  class RestServiceStressTest {
  
      @LocalServerPort int port; // just for reference (not used)
      @Inject JdoRestEndpointService restService;
  
      @BeforeAll
      static void init() {
          _Swt.enableSwing();
      }
  
      //TODO[ISIS-3275] performance regression compared to v2: 26s vs 6s
      @Test
      void bookOfTheWeek_stressTest() {
  
          assertTrue(restService.getPort()>0);
  
          _Swt.prompt("get ready for stress testing");
  
          var useRequestDebugLogging = false;
          final int clients = 16;
          final int iterations = 1000;
          var label = String.format("Calling REST endpoint %d times", clients * iterations);
  
          _Timing.runVerbose(log, label, ()->{
  
              IntStream.range(0, clients)
              .parallel()
              .mapToObj(i->{
                  var restfulClient = restService.newClient(useRequestDebugLogging);
                  return restfulClient;
              })
              .forEach(restfulClient->{
  
                  IntStream.range(0, iterations)
                  .forEach(iter->{
                      requestSingleBookOfTheWeek_viaRestEndpoint(restfulClient);
                  });
  
              });
  
          });
  
          _Swt.prompt("stress testing done");
  
      }
  
      void requestSingleBookOfTheWeek_viaRestEndpoint(final RestfulClient restfulClient) {
  
          var digest = restService.getRecommendedBookOfTheWeekDto(restfulClient)
                  .ifFailure(Assertions::fail);
  
          var bookOfTheWeek = digest.getValue().orElseThrow();
  
          assertNotNull(bookOfTheWeek);
          assertEquals("Book of the week", bookOfTheWeek.getName());
      }
  
  }
  