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.kafka.image.publisher;
  
  import org.apache.kafka.common.metadata.FeatureLevelRecord;
  import org.apache.kafka.image.MetadataDelta;
  import org.apache.kafka.image.MetadataImage;
  import org.apache.kafka.image.MetadataProvenance;
  import org.apache.kafka.image.loader.LogDeltaManifest;
  import org.apache.kafka.image.loader.SnapshotManifest;
  import org.apache.kafka.metadata.RecordTestUtils;
  import org.apache.kafka.raft.LeaderAndEpoch;
  import org.apache.kafka.server.common.MetadataVersion;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.ValueSource;
  
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.OptionalInt;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  
  @Timeout(value = 40)
  public class ControllerRegistrationsPublisherTest {
      @Test
      public void testInitialControllers() {
          ControllerRegistrationsPublisher publisher = new ControllerRegistrationsPublisher();
          assertEquals(Map.of(), publisher.controllers());
      }
  
      @Test
      public void testName() {
          ControllerRegistrationsPublisher publisher = new ControllerRegistrationsPublisher();
          assertEquals("ControllerRegistrationsPublisher", publisher.name());
      }
  
      private static final MetadataDelta TEST_DELTA;
  
      private static final MetadataImage TEST_IMAGE;
  
      private static final MetadataProvenance PROVENANCE = new MetadataProvenance(100L, 10, 2000L, true);
  
      static {
          TEST_DELTA = new MetadataDelta.Builder().build();
          TEST_DELTA.replay(new FeatureLevelRecord().
                  setName(MetadataVersion.FEATURE_NAME).
                  setFeatureLevel(MetadataVersion.IBP_3_6_IV2.featureLevel()));
          TEST_DELTA.replay(RecordTestUtils.createTestControllerRegistration(0, true));
          TEST_DELTA.replay(RecordTestUtils.createTestControllerRegistration(1, false));
          TEST_DELTA.replay(RecordTestUtils.createTestControllerRegistration(2, false));
          TEST_IMAGE = TEST_DELTA.apply(PROVENANCE);
      }
  
      @ParameterizedTest
      @ValueSource(booleans = {false, true})
      public void testOnMetadataUpdate(boolean fromSnapshot) {
          ControllerRegistrationsPublisher publisher = new ControllerRegistrationsPublisher();
          if (fromSnapshot) {
              publisher.onMetadataUpdate(TEST_DELTA, TEST_IMAGE,
                  new SnapshotManifest(new MetadataProvenance(100L, 10, 2000L, true), 100L));
          } else {
              publisher.onMetadataUpdate(TEST_DELTA, TEST_IMAGE,
                  LogDeltaManifest.newBuilder().
                      provenance(PROVENANCE).
                      leaderAndEpoch(new LeaderAndEpoch(OptionalInt.of(1), 200)).
                      numBatches(3).
                      elapsedNs(1000L).
                      numBytes(234).
                      build());
          }
          System.out.println("TEST_IMAGE.cluster = " + TEST_IMAGE.cluster());
          assertEquals(new HashSet<>(List.of(0, 1, 2)), publisher.controllers().keySet());
          assertTrue(publisher.controllers().get(0).zkMigrationReady());
          assertFalse(publisher.controllers().get(1).zkMigrationReady());
          assertFalse(publisher.controllers().get(2).zkMigrationReady());
      }
  }
  