content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * 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
   *
   * https://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 io.aeron.cluster;
  
  import static io.aeron.Aeron.NULL_VALUE;
  
  class LogSourceValidator
  {
      private final ClusterBackup.SourceType sourceType;
  
      LogSourceValidator(final ClusterBackup.SourceType sourceType)
      {
          this.sourceType = sourceType;
      }
  
      boolean isAcceptable(final long leaderMemberId, final long memberId)
      {
          switch (sourceType)
          {
              case LEADER:
                  return NULL_VALUE != leaderMemberId && leaderMemberId == memberId;
              case FOLLOWER:
                  return NULL_VALUE == leaderMemberId || leaderMemberId != memberId;
              case ANY:
                  return true;
          }
  
          throw new IllegalStateException("Unknown sourceType=" + sourceType);
      }
  }
  