class_docstr: Takes care of collecting, sampling, serializing, and publishing a set of metrics.
class_docstr_tok: ["Takes","care","of","collecting",",","sampling",",","serializing",",","and","publishing","a","set","of","metrics","."]
code: def start(self) -> None:
      if (self._process is not None) or self._shutdown_event.is_set():
          return None
  
      thread_name = f"{self.asset_name[:15]}"  # thread names are limited to 15 chars
      try:
          for metric in self.metrics:
              if isinstance(metric, SetupTeardown):
                  metric.setup()
          self._process = threading.Thread(
              target=self.monitor,
              daemon=True,
              name=thread_name,
          )
          self._process.start()
          logger.info(f"Started {thread_name} monitoring")
      except Exception as e:
          logger.warning(
              f"Failed to start {thread_name} monitoring: {e}"
          )
          self._process = None
  
imports: import datetime
  import logging
  import sys
  import threading
  from typing import TYPE_CHECKING, Any, List, Optional, TypeVar
  import psutil
label_desc: Use image node_id 5 for calling the MetricsMonitor obj's underlying member method code with example usage: obj.start() and returns: None