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.errors.GroupAuthorizationException;
  import org.apache.kafka.common.errors.UnknownServerException;
  import org.apache.kafka.common.message.LeaveGroupRequestData.MemberIdentity;
  import org.apache.kafka.common.message.LeaveGroupResponseData;
  import org.apache.kafka.common.message.LeaveGroupResponseData.MemberResponse;
  import org.apache.kafka.common.protocol.Errors;
  import org.apache.kafka.common.requests.LeaveGroupRequest;
  import org.apache.kafka.common.requests.LeaveGroupResponse;
  import org.apache.kafka.common.utils.LogContext;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  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 RemoveMembersFromConsumerGroupHandlerTest {
  
      private final LogContext logContext = new LogContext();
      private final String groupId = "group-id";
      private final MemberIdentity m1 = new MemberIdentity()
              .setMemberId("m1")
              .setGroupInstanceId("m1-gii");
      private final MemberIdentity m2 = new MemberIdentity()
              .setMemberId("m2")
              .setGroupInstanceId("m2-gii");
      private final List<MemberIdentity> members = Arrays.asList(m1, m2);
  
      @Test
      public void testBuildRequest() {
          RemoveMembersFromConsumerGroupHandler handler = new RemoveMembersFromConsumerGroupHandler(groupId, members, logContext);
          LeaveGroupRequest request = handler.buildBatchedRequest(1, singleton(CoordinatorKey.byGroupId(groupId))).build();
          assertEquals(groupId, request.data().groupId());
          assertEquals(2, request.data().members().size());
      }
  
      @Test
      public void testSuccessfulHandleResponse() {
          Map<MemberIdentity, Errors> responseData = Collections.singletonMap(m1, Errors.NONE);
          assertCompleted(handleWithGroupError(Errors.NONE), responseData);
      }
  
      @Test
      public void testUnmappedHandleResponse() {
          assertUnmapped(handleWithGroupError(Errors.COORDINATOR_NOT_AVAILABLE));
          assertUnmapped(handleWithGroupError(Errors.NOT_COORDINATOR));
      }
  
      @Test
      public void testRetriableHandleResponse() {
          assertRetriable(handleWithGroupError(Errors.COORDINATOR_LOAD_IN_PROGRESS));
      }
  
      @Test
      public void testFailedHandleResponse() {
          assertFailed(GroupAuthorizationException.class, handleWithGroupError(Errors.GROUP_AUTHORIZATION_FAILED));
          assertFailed(UnknownServerException.class, handleWithGroupError(Errors.UNKNOWN_SERVER_ERROR));
      }
  
      @Test
      public void testFailedHandleResponseInMemberLevel() {
          assertMemberFailed(Errors.FENCED_INSTANCE_ID, handleWithMemberError(Errors.FENCED_INSTANCE_ID));
          assertMemberFailed(Errors.UNKNOWN_MEMBER_ID, handleWithMemberError(Errors.UNKNOWN_MEMBER_ID));
      }
  
      private LeaveGroupResponse buildResponse(Errors error) {
          return new LeaveGroupResponse(
              new LeaveGroupResponseData()
                  .setErrorCode(error.code())
                  .setMembers(singletonList(
                      new MemberResponse()
                          .setErrorCode(Errors.NONE.code())
                          .setMemberId("m1")
                          .setGroupInstanceId("m1-gii"))));
      }
  
      private LeaveGroupResponse buildResponseWithMemberError(Errors error) {
          return new LeaveGroupResponse(
              new LeaveGroupResponseData()
                  .setErrorCode(Errors.NONE.code())
                  .setMembers(singletonList(
                      new MemberResponse()
                          .setErrorCode(error.code())
                          .setMemberId("m1")
                          .setGroupInstanceId("m1-gii"))));
      }
  
      private AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, Errors>> handleWithGroupError(
          Errors error
      ) {
          RemoveMembersFromConsumerGroupHandler handler = new RemoveMembersFromConsumerGroupHandler(groupId, members, logContext);
          LeaveGroupResponse response = buildResponse(error);
          return handler.handleResponse(new Node(1, "host", 1234), singleton(CoordinatorKey.byGroupId(groupId)), response);
      }
  
      private AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, Errors>> handleWithMemberError(
          Errors error
      ) {
          RemoveMembersFromConsumerGroupHandler handler = new RemoveMembersFromConsumerGroupHandler(groupId, members, logContext);
          LeaveGroupResponse response = buildResponseWithMemberError(error);
          return handler.handleResponse(new Node(1, "host", 1234), singleton(CoordinatorKey.byGroupId(groupId)), response);
      }
  
      private void assertUnmapped(
          AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, 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<MemberIdentity, Errors>> result
      ) {
          assertEquals(emptySet(), result.completedKeys.keySet());
          assertEquals(emptySet(), result.failedKeys.keySet());
          assertEquals(emptyList(), result.unmappedKeys);
      }
  
      private void assertCompleted(
          AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, Errors>> result,
          Map<MemberIdentity, 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 assertFailed(
          Class<? extends Throwable> expectedExceptionType,
          AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, 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 assertMemberFailed(
          Errors expectedError,
          AdminApiHandler.ApiResult<CoordinatorKey, Map<MemberIdentity, Errors>> result
      ) {
          Map<MemberIdentity, Errors> expectedResponseData = Collections.singletonMap(m1, expectedError);
          CoordinatorKey key = CoordinatorKey.byGroupId(groupId);
          assertEquals(emptySet(), result.failedKeys.keySet());
          assertEquals(emptyList(), result.unmappedKeys);
          assertEquals(singleton(key), result.completedKeys.keySet());
          assertEquals(expectedResponseData, result.completedKeys.get(key));
      }
  }
  