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.clients.admin.internals;
  
  import org.apache.kafka.common.Node;
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.errors.GroupAuthorizationException;
  import org.apache.kafka.common.errors.GroupIdNotFoundException;
  import org.apache.kafka.common.errors.GroupNotEmptyException;
  import org.apache.kafka.common.errors.InvalidGroupIdException;
  import org.apache.kafka.common.message.OffsetDeleteResponseData;
  import org.apache.kafka.common.message.OffsetDeleteResponseData.OffsetDeleteResponsePartition;
  import org.apache.kafka.common.message.OffsetDeleteResponseData.OffsetDeleteResponsePartitionCollection;
  import org.apache.kafka.common.message.OffsetDeleteResponseData.OffsetDeleteResponseTopic;
  import org.apache.kafka.common.message.OffsetDeleteResponseData.OffsetDeleteResponseTopicCollection;
  import org.apache.kafka.common.protocol.Errors;
  import org.apache.kafka.common.requests.OffsetDeleteRequest;
  import org.apache.kafka.common.requests.OffsetDeleteResponse;
  import org.apache.kafka.common.utils.LogContext;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.emptySet;
  import static java.util.Collections.singleton;
  import static java.util.Collections.singletonList;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  
  public class DeleteConsumerGroupOffsetsHandlerTest {
  
      private final LogContext logContext = new LogContext();
      private final String groupId = "group-id";
      private final TopicPartition t0p0 = new TopicPartition("t0", 0);
      private final TopicPartition t0p1 = new TopicPartition("t0", 1);
      private final TopicPartition t1p0 = new TopicPartition("t1", 0);
      private final Set<TopicPartition> tps = new HashSet<>(Arrays.asList(t0p0, t0p1, t1p0));
  
      @Test
      public void testBuildRequest() {
          DeleteConsumerGroupOffsetsHandler handler = new DeleteConsumerGroupOffsetsHandler(groupId, tps, logContext);
          OffsetDeleteRequest request = handler.buildBatchedRequest(1, singleton(CoordinatorKey.byGroupId(groupId))).build();
          assertEquals(groupId, request.data().groupId());
          assertEquals(2, request.data().topics().size());
          assertEquals(2, request.data().topics().find("t0").partitions().size());
          assertEquals(1, request.data().topics().find("t1").partitions().size());
      }
  
      @Test
      public void testSuccessfulHandleResponse() {
          Map<TopicPartition, Errors> responseData = Collections.singletonMap(t0p0, Errors.NONE);
          assertCompleted(handleWithGroupError(Errors.NONE), responseData);
      }
  
      @Test
      public void testUnmappedHandleResponse() {
          assertUnmapped(handleWithGroupError(Errors.NOT_COORDINATOR));
          assertUnmapped(handleWithGroupError(Errors.COORDINATOR_NOT_AVAILABLE));
      }
  
      @Test
      public void testRetriableHandleResponse() {
          assertRetriable(handleWithGroupError(Errors.COORDINATOR_LOAD_IN_PROGRESS));
      }
  
      @Test
      public void testFailedHandleResponseWithGroupError() {
          assertGroupFailed(GroupAuthorizationException.class, handleWithGroupError(Errors.GROUP_AUTHORIZATION_FAILED));
          assertGroupFailed(GroupIdNotFoundException.class, handleWithGroupError(Errors.GROUP_ID_NOT_FOUND));
          assertGroupFailed(InvalidGroupIdException.class, handleWithGroupError(Errors.INVALID_GROUP_ID));
          assertGroupFailed(GroupNotEmptyException.class, handleWithGroupError(Errors.NON_EMPTY_GROUP));
      }
  
      @Test
      public void testFailedHandleResponseWithPartitionError() {
          assertPartitionFailed(Collections.singletonMap(t0p0, Errors.GROUP_SUBSCRIBED_TO_TOPIC),
              handleWithPartitionError(Errors.GROUP_SUBSCRIBED_TO_TOPIC));
          assertPartitionFailed(Collections.singletonMap(t0p0, Errors.TOPIC_AUTHORIZATION_FAILED),
              handleWithPartitionError(Errors.TOPIC_AUTHORIZATION_FAILED));
          assertPartitionFailed(Collections.singletonMap(t0p0, Errors.UNKNOWN_TOPIC_OR_PARTITION),
              handleWithPartitionError(Errors.UNKNOWN_TOPIC_OR_PARTITION));
      }
  
      private OffsetDeleteResponse buildGroupErrorResponse(Errors error) {
          OffsetDeleteResponse response = new OffsetDeleteResponse(
              new OffsetDeleteResponseData()
                  .setErrorCode(error.code()));
          if (error == Errors.NONE) {
              response.data()
                  .setThrottleTimeMs(0)
                  .setTopics(new OffsetDeleteResponseTopicCollection(singletonList(
                      new OffsetDeleteResponseTopic()
                          .setName(t0p0.topic())
                          .setPartitions(new OffsetDeleteResponsePartitionCollection(singletonList(
                              new OffsetDeleteResponsePartition()
                                  .setPartitionIndex(t0p0.partition())
                                  .setErrorCode(error.code())
                          ).iterator()))
                  ).iterator()));
          }
          return response;
      }
  
      private OffsetDeleteResponse buildPartitionErrorResponse(Errors error) {
          return new OffsetDeleteResponse(
              new OffsetDeleteResponseData()
                  .setThrottleTimeMs(0)
                  .setTopics(new OffsetDeleteResponseTopicCollection(singletonList(
                      new OffsetDeleteResponseTopic()
                          .setName(t0p0.topic())
                          .setPartitions(new OffsetDeleteResponsePartitionCollection(singletonList(
                              new OffsetDeleteResponsePartition()
                                  .setPartitionIndex(t0p0.partition())
                                  .setErrorCode(error.code())
                          ).iterator()))
                  ).iterator()))
          );
      }
  
      private AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> handleWithGroupError(
          Errors error
      ) {
          DeleteConsumerGroupOffsetsHandler handler = new DeleteConsumerGroupOffsetsHandler(groupId, tps, logContext);
          OffsetDeleteResponse response = buildGroupErrorResponse(error);
          return handler.handleResponse(new Node(1, "host", 1234), singleton(CoordinatorKey.byGroupId(groupId)), response);
      }
  
      private AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> handleWithPartitionError(
          Errors error
      ) {
          DeleteConsumerGroupOffsetsHandler handler = new DeleteConsumerGroupOffsetsHandler(groupId, tps, logContext);
          OffsetDeleteResponse response = buildPartitionErrorResponse(error);
          return handler.handleResponse(new Node(1, "host", 1234), singleton(CoordinatorKey.byGroupId(groupId)), response);
      }
  
      private void assertUnmapped(
          AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> result
      ) {
          assertEquals(emptySet(), result.completedKeys.keySet());
          assertEquals(emptySet(), result.failedKeys.keySet());
          assertEquals(singletonList(CoordinatorKey.byGroupId(groupId)), result.unmappedKeys);
      }
  
      private void assertRetriable(
          AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> result
      ) {
          assertEquals(emptySet(), result.completedKeys.keySet());
          assertEquals(emptySet(), result.failedKeys.keySet());
          assertEquals(emptyList(), result.unmappedKeys);
      }
  
      private void assertCompleted(
          AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> result,
          Map<TopicPartition, Errors> expected
      ) {
          CoordinatorKey key = CoordinatorKey.byGroupId(groupId);
          assertEquals(emptySet(), result.failedKeys.keySet());
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(singleton(key), result.completedKeys.keySet());
          assertEquals(expected, result.completedKeys.get(key));
      }
  
      private void assertGroupFailed(
          Class<? extends Throwable> expectedExceptionType,
          AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> result
      ) {
          CoordinatorKey key = CoordinatorKey.byGroupId(groupId);
          assertEquals(emptySet(), result.completedKeys.keySet());
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(singleton(key), result.failedKeys.keySet());
          assertInstanceOf(expectedExceptionType, result.failedKeys.get(key));
      }
  
      private void assertPartitionFailed(
          Map<TopicPartition, Errors> expectedResult,
          AdminApiHandler.ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> result
      ) {
          CoordinatorKey key = CoordinatorKey.byGroupId(groupId);
          assertEquals(singleton(key), result.completedKeys.keySet());
  
          // verify the completed value is expected result
          Collection<Map<TopicPartition, Errors>> completeCollection = result.completedKeys.values();
          assertEquals(1, completeCollection.size());
          assertEquals(expectedResult, result.completedKeys.get(key));
  
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(emptySet(), result.failedKeys.keySet());
      }
  }
  