private static void HandleGracefulShutdownRequest <TCoordinator>(this TCoordinator coordinator, PersistentShardCoordinator.GracefulShutdownRequest request) where TCoordinator : IShardCoordinator
{
if (!coordinator.GracefullShutdownInProgress.Contains(request.ShardRegion))
{
if (coordinator.CurrentState.Regions.TryGetValue(request.ShardRegion, out var shards))
{
coordinator.Log.Debug("Graceful shutdown of region [{0}] with shards [{1}]", request.ShardRegion, string.Join(", ", shards));
coordinator.GracefullShutdownInProgress = coordinator.GracefullShutdownInProgress.Add(request.ShardRegion);
coordinator.ShutdownShards(request.ShardRegion, shards.ToImmutableHashSet());
}
else
{
coordinator.Log.Debug("Unknown region requested graceful shutdown [{0}]", request.ShardRegion);
}
}
}
