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.coordinator.group.modern;
  
  import org.apache.kafka.common.Uuid;
  import org.apache.kafka.coordinator.group.api.assignor.MemberAssignment;
  import org.apache.kafka.coordinator.group.api.assignor.MemberSubscription;
  
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Set;
  
  /**
   * Implementation of the {@link MemberSubscription} and the {@link MemberAssignment} interfaces.
   */
  public class MemberSubscriptionAndAssignmentImpl implements MemberSubscription, MemberAssignment {
      private final Optional<String> rackId;
      private final Optional<String> instanceId;
      private final Set<Uuid> subscribedTopicIds;
      private final Assignment memberAssignment;
  
      /**
       * Constructs a new {@code MemberSubscriptionAndAssignmentImpl}.
       *
       * @param rackId                The rack Id.
       * @param subscribedTopicIds    The set of subscribed topic Ids.
       * @param memberAssignment      The current member assignment.
       */
      public MemberSubscriptionAndAssignmentImpl(
          Optional<String> rackId,
          Optional<String> instanceId,
          Set<Uuid> subscribedTopicIds,
          Assignment memberAssignment
      ) {
          this.rackId = Objects.requireNonNull(rackId);
          this.instanceId = Objects.requireNonNull(instanceId);
          this.subscribedTopicIds = Objects.requireNonNull(subscribedTopicIds);
          this.memberAssignment = Objects.requireNonNull(memberAssignment);
      }
  
      @Override
      public Optional<String> rackId() {
          return rackId;
      }
  
      @Override
      public Optional<String> instanceId() {
          return instanceId;
      }
  
      @Override
      public Set<Uuid> subscribedTopicIds() {
          return subscribedTopicIds;
      }
  
      @Override
      public Map<Uuid, Set<Integer>> partitions() {
          return memberAssignment.partitions();
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
          MemberSubscriptionAndAssignmentImpl that = (MemberSubscriptionAndAssignmentImpl) o;
          return rackId.equals(that.rackId) &&
              instanceId.equals(that.instanceId) &&
              subscribedTopicIds.equals(that.subscribedTopicIds) &&
              memberAssignment.equals(that.memberAssignment);
      }
  
      @Override
      public int hashCode() {
          int result = rackId.hashCode();
          result = 31 * result + instanceId.hashCode();
          result = 31 * result + subscribedTopicIds.hashCode();
          result = 31 * result + memberAssignment.hashCode();
          return result;
      }
  
      @Override
      public String toString() {
          return "MemberSubscriptionAndAssignmentImpl(rackId=" + rackId.orElse("N/A") +
              ", instanceId=" + instanceId +
              ", subscribedTopicIds=" + subscribedTopicIds +
              ", memberAssignment=" + memberAssignment +
              ')';
      }
  }
  