code: def Logstream(self, request_iterator, context):
      initialized = False
      with self.client_lock:
          threshold = CLIENT_SERVER_MAX_THREADS / 2
          if self.num_clients + 1 >= threshold:
              context.set_code(grpc.StatusCode.RESOURCE_EXHAUSTED)
              logger.warning(
                  f"Logstream: Num clients {self.num_clients} has reached "
                  f"the threshold {threshold}. Rejecting new connection."
              )
              return
          self.num_clients += 1
          initialized = True
          logger.info(
              "New logs connection established. "
              f"Total clients: {self.num_clients}"
          )
      log_queue = queue.Queue()
      thread = threading.Thread(
          target=log_status_change_thread,
          args=(log_queue, request_iterator),
          daemon=True,
      )
      thread.start()
      try:
          queue_iter = iter(log_queue.get, None)
          for record in queue_iter:
              if record is None:
                  break
              yield record
      except grpc.RpcError as e:
          logger.debug(f"Closing log channel: {e}")
      finally:
          thread.join()
          with self.client_lock:
              if initialized:
                  self.num_clients -= 1
  
imports: import io
  import logging
  import queue
  import threading
  import uuid
  import grpc
  import ray.core.generated.ray_client_pb2
  import ray.core.generated.ray_client_pb2_grpc
  from ray._private.ray_logging import global_worker_stdstream_dispatcher
  from ray._private.worker import print_worker_logs
  from ray.util.client.common import CLIENT_SERVER_MAX_THREADS
label_desc: Use image node_id 2 for calling the LogstreamServicer obj's underlying member method code with example usage: obj.Logstream(request_iterator, context) without return types