code: def _lock_task(self, task):
      run_by = f"{socket.gethostname()} {os.getpid()}"
      db_date = db.session.query(sa.func.current_timestamp()).first()[0]
      if task.run_by == run_by:
          # already locked
          task.alive_time = db_date
  
      elif task.alive_time is None:
          # not locked yet
          task.run_by = run_by
          task.alive_time = db_date
  
      elif db_date - task.alive_time > dt.timedelta(
          seconds=self.LOCK_EXPIRED_SECONDS
      ):
          # lock expired
          task.run_by = run_by
          task.alive_time = db_date
  
      else:
          return False
  
      db.session.commit()
      return True
  
file_path: mindsdb/mindsdb/interfaces/tasks/task_monitor.py
imports: import datetime
  import os
  import socket
  import time
  import sqlalchemy
  from mindsdb.interfaces.storage import db
  from mindsdb.utilities import log
  from mindsdb.utilities.config import Config
  from .task_thread import TaskThread
label_desc: Use image node_id 5 for calling the TaskMonitor obj's underlying member method code with example usage: obj._lock_task(task) and returns: True, False