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# --------------------------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# --------------------------------------------------------------------------------------------
import os
import sys
import logging
import psutil
import threading
import time
def get_base_logger(logger_name: str, log_file_name: str = ""):
logger = logging.getLogger(logger_name)
logger.setLevel(logging.INFO)
formatter = logging.Formatter("%(asctime)s %(name)-12s %(levelname)-8s %(message)s")
handers = [logging.StreamHandler(sys.stdout)]
if log_file_name:
handers.append(logging.FileHandler(log_file_name, mode="w"))
for handler in handers:
handler.setFormatter(formatter)
logger.addHandler(handler)
return logger
class ProcessMonitor:
def __init__(self, logger_name, log_file_name: str, log_interval: int):
"""
Process Monitor monitors the CPU usage, memory usage of a specific process.
:param logger_name: The name for the logger.
:param log_interval: The interval of logging.
"""
self._monitor_thread = None
self._logger = get_base_logger(
logger_name=logger_name,
log_file_name=log_file_name,
)
self._pid = os.getpid()
self._process_instance = psutil.Process(self._pid)
self._log_interval = log_interval
self.running = False
def __enter__(self):
print("Process monitor start working.")
self.start()
return self
def __exit__(self, *args):
self.stop()
print("Process monitor stop working.")
def _monitor_work(self):
while self.running:
log_content = (
"process status: {},"
"process cpu usage percent: {},"
"process memory usage percent: {:.3f}".format(
self._process_instance.status(),
self._process_instance.cpu_percent(),
self._process_instance.memory_percent(),
)
)
self._logger.info(log_content)
time.sleep(self._log_interval)
@property
def memory_usage_percent(self):
return self._process_instance.memory_percent() * 100
@property
def cpu_usage_percent(self):
return self._process_instance.cpu_percent()
def start(self):
self.running = True
self._monitor_thread = threading.Thread(target=self._monitor_work, daemon=True)
self._monitor_thread.start()
self._logger.info("Start monitoring process id:{}".format(self._pid))
def stop(self):
self.running = False
self._monitor_thread.join()
self._logger.info("Stop monitoring process id:{}".format(self._pid))
self._monitor_thread = None
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