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.AtomicCounter;
  
  import java.util.concurrent.TimeUnit;
  
  /**
   * Aeron client library tracker.
   */
  final class AeronClient implements DriverManagedResource
  {
      private final long clientId;
      private final long clientLivenessTimeoutMs;
      private boolean reachedEndOfLife = false;
      private boolean closedByCommand = false;
      private final AtomicCounter clientTimeouts;
      private final AtomicCounter heartbeatTimestamp;
  
      AeronClient(
          final long clientId,
          final long clientLivenessTimeoutNs,
          final AtomicCounter clientTimeouts,
          final AtomicCounter heartbeatTimestamp)
      {
          this.clientId = clientId;
          this.clientLivenessTimeoutMs = Math.max(1, TimeUnit.NANOSECONDS.toMillis(clientLivenessTimeoutNs));
          this.clientTimeouts = clientTimeouts;
          this.heartbeatTimestamp = heartbeatTimestamp;
      }
  
      /**
       * {@inheritDoc}
       */
      public void close()
      {
          heartbeatTimestamp.close();
      }
  
      /**
       * {@inheritDoc}
       */
      public void onTimeEvent(final long timeNs, final long timeMs, final DriverConductor conductor)
      {
          if (timeMs > (heartbeatTimestamp.get() + clientLivenessTimeoutMs))
          {
              reachedEndOfLife = true;
  
              if (!closedByCommand)
              {
                  clientTimeouts.incrementRelease();
                  conductor.clientTimeout(clientId);
              }
  
              conductor.unavailableCounter(clientId, heartbeatTimestamp.id());
          }
      }
  
      /**
       * {@inheritDoc}
       */
      public boolean hasReachedEndOfLife()
      {
          return reachedEndOfLife;
      }
  
  
      public String toString()
      {
          return "AeronClient{" +
              "clientId=" + clientId +
              ", clientLivenessTimeoutMs=" + clientLivenessTimeoutMs +
              ", reachedEndOfLife=" + reachedEndOfLife +
              ", closedByCommand=" + closedByCommand +
              ", clientTimeouts=" + clientTimeouts +
              ", heartbeatTimestamp=" + heartbeatTimestamp +
              '}';
      }
  
      long clientId()
      {
          return clientId;
      }
  
      boolean hasTimedOut()
      {
          return reachedEndOfLife;
      }
  
      void timeOfLastKeepaliveMs(final long nowMs)
      {
          heartbeatTimestamp.setRelease(nowMs);
      }
  
      void onClosedByCommand()
      {
          closedByCommand = true;
          heartbeatTimestamp.setRelease(0);
      }
  }
  