content: /*
   * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
   * 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.
   */
  
  package me.ahoo.cosid.mongo;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.*;
  
  import me.ahoo.cosid.mongo.reactive.MongoReactiveIdSegmentDistributorFactory;
  import me.ahoo.cosid.mongo.reactive.MongoReactiveIdSegmentInitializer;
  import me.ahoo.cosid.segment.IdSegmentDistributor;
  import me.ahoo.cosid.segment.IdSegmentDistributorDefinition;
  import me.ahoo.cosid.segment.IdSegmentDistributorFactory;
  import me.ahoo.cosid.segment.SegmentChainId;
  import me.ahoo.cosid.test.MockIdGenerator;
  import me.ahoo.cosid.test.container.MongoLauncher;
  import me.ahoo.cosid.test.segment.distributor.IdSegmentDistributorSpec;
  
  import com.mongodb.reactivestreams.client.MongoClients;
  import com.mongodb.reactivestreams.client.MongoDatabase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import reactor.core.publisher.Mono;
  import reactor.core.scheduler.Schedulers;
  import reactor.test.StepVerifier;
  
  class MongoReactiveIdSegmentDistributorTest extends IdSegmentDistributorSpec {
      MongoDatabase mongoDatabase;
      IdSegmentDistributorFactory distributorFactory;
      MongoReactiveIdSegmentInitializer idSegmentInitializer;
      
      @BeforeEach
      void setup() {
          mongoDatabase = MongoClients.create(MongoLauncher.getConnectionString()).getDatabase("cosid_db");
          idSegmentInitializer = new MongoReactiveIdSegmentInitializer(mongoDatabase);
          
          idSegmentInitializer.ensureCosIdCollection();
          distributorFactory =
              new MongoReactiveIdSegmentDistributorFactory(mongoDatabase);
      }
      
      @Override
      protected IdSegmentDistributorFactory getFactory() {
          return distributorFactory;
      }
      
      @Override
      protected <T extends IdSegmentDistributor> void setMaxIdBack(T distributor, long maxId) {
      
      }
      
      @Override
      public void nextMaxIdWhenBack() {
      
      }
      
      @Test
      public void nextMaxIdInParallel() {
          var mono = Mono.fromRunnable(() -> {
              String namespace = MockIdGenerator.INSTANCE.generateAsString();
              IdSegmentDistributorDefinition definition = new IdSegmentDistributorDefinition(namespace, "nextMaxIdIParallel", TEST_OFFSET, TEST_STEP);
              IdSegmentDistributor distributor = factory().create(definition);
              long expected = TEST_OFFSET + TEST_STEP;
              long actual = distributor.nextMaxId();
              assertThat(actual, equalTo(expected));
              long actual2 = distributor.nextMaxId();
              assertThat(actual2, greaterThan(actual));
          }).subscribeOn(Schedulers.parallel());
          StepVerifier.create(mono).verifyComplete();
      }
      
      @Test
      public void batchNextMaxId() {
          String namespace = MockIdGenerator.INSTANCE.generateAsString();
          IdSegmentDistributorDefinition definition = new IdSegmentDistributorDefinition(namespace, "batchNextMaxId", 1, 1);
          IdSegmentDistributor distributor = factory().create(definition);
          var segmentChainId = new SegmentChainId(distributor);
          for (int i = 0; i < 1000; i++) {
              segmentChainId.generateAsString();
          }
          var mono = Mono.fromRunnable(() -> {
              for (int i = 0; i < 1000; i++) {
                  segmentChainId.generateAsString();
              }
          }).subscribeOn(Schedulers.single());
          StepVerifier.create(mono).verifyComplete();
      }
  }