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.driver;
  
  import org.agrona.concurrent.status.ReadablePosition;
  
  class UntetheredSubscription
  {
      @SuppressWarnings("JavadocVariable")
      enum State
      {
          ACTIVE,
          LINGER,
          RESTING
      }
  
      State state = State.ACTIVE;
      long timeOfLastUpdateNs;
      final SubscriptionLink subscriptionLink;
      final ReadablePosition position;
  
      UntetheredSubscription(final SubscriptionLink subscriptionLink, final ReadablePosition position, final long timeNs)
      {
          this.subscriptionLink = subscriptionLink;
          this.position = position;
          this.timeOfLastUpdateNs = timeNs;
      }
  
      void state(final State newState, final long nowNs, final int streamId, final int sessionId)
      {
          logStateChange(state, newState, subscriptionLink.registrationId, streamId, sessionId, nowNs);
          state = newState;
          timeOfLastUpdateNs = nowNs;
      }
  
      private void logStateChange(
          final State oldState,
          final State newState,
          final long subscriptionId,
          final int streamId,
          final int sessionId,
          final long nowNs)
      {
  //        System.out.println(nowNs + ": subscriptionId=" + subscriptionId + ", streamId=" + streamId +
  //            ", sessionId=" + sessionId + ", " + oldState + " -> " + newState);
      }
  }
  