text: #
  # Copyright (c) 2020, Neptune Labs Sp. z o.o.
  #
  # 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
  #
  #     http://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.
  #
  
  import logging
  
  from typing import TYPE_CHECKING, Optional
  
  from neptune.new.internal.background_job import BackgroundJob
  from neptune.new.internal.threading.daemon import Daemon
  
  if TYPE_CHECKING:
      from neptune.new.run import Run
  
  _logger = logging.getLogger(__name__)
  
  
  class PingBackgroundJob(BackgroundJob):
      def __init__(self, period: float = 10):
          self._period = period
          self._thread = None
          self._started = False
  
      def start(self, run: "Run"):
          self._thread = self.ReportingThread(self._period, run)
          self._thread.start()
          self._started = True
  
      def stop(self):
          if not self._started:
              return
          self._thread.interrupt()
  
      def join(self, seconds: Optional[float] = None):
          if not self._started:
              return
          self._thread.join(seconds)
  
      class ReportingThread(Daemon):
          def __init__(self, period: float, run: "Run"):
              super().__init__(sleep_time=period, name="NeptunePing")
              self._run = run
  
          @Daemon.ConnectionRetryWrapper(
              kill_message=(
                  "Killing Neptune ping thread. Your run's status will not be updated and"
                  " the run will be shown as inactive."
              )
          )
          def work(self) -> None:
              self._run.ping()
  