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"""Package handling different loggers |
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.. Authors: |
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Philippe Dessauw |
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[email protected] |
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.. Sponsor: |
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Alden Dima |
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[email protected] |
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Information Systems Group |
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Software and Systems Division |
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Information Technology Laboratory |
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National Institute of Standards and Technology |
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http://www.nist.gov/itl/ssd/is |
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""" |
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import json |
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import logging |
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from time import sleep |
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from pipeline.threads import StoppableThread |
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from pipeline.queue import QueueManager |
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class AppLogger(object): |
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"""Logger publishing to a redis queue |
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""" |
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def __init__(self, uid, local_logger, queue_ip="127.0.0.1", queue_port=6379): |
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self.log_queue = QueueManager(host=queue_ip, port=queue_port, qname="logging") |
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self.logger = local_logger |
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# Identify the logging process |
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self.uid = uid |
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def log(self, level, message): |
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"""Log a message with a given level |
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Parameters |
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level (int): Log level |
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message (str): Message to store |
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""" |
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log_mess = { |
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"uid": self.uid, |
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"lvl": level, |
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"msg": message |
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} |
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self.log_queue.push(json.dumps(log_mess)) |
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self.logger.log(level, "["+self.uid+"] "+message) |
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def debug(self, message): |
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"""Log a debug message |
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Parameters |
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message (str): Message to store |
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""" |
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self.log(logging.DEBUG, message) |
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def info(self, message): |
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"""Log an info message |
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Parameters |
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message (str): Message to store |
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""" |
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self.log(logging.INFO, message) |
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def warning(self, message): |
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"""Log a warning message |
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Parameters |
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message (str): Message to store |
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""" |
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self.log(logging.WARNING, message) |
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def error(self, message): |
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"""Log an error message |
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Parameters |
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message (str): Message to store |
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""" |
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self.log(logging.ERROR, message) |
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def fatal(self, message): |
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"""Log a fatal message |
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Parameters |
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message (str): Message to store |
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""" |
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self.log(logging.FATAL, message) |
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class LogWriter(StoppableThread): |
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"""Pops element from the logging queue and write them in the proper directory |
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""" |
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def __init__(self, app_logger, queue_ip="127.0.0.1", queue_port=6379): |
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StoppableThread.__init__(self) |
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self.log_queue = QueueManager(host=queue_ip, port=queue_port, qname="logging") |
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self.logger = app_logger |
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def write_logs(self): |
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"""Write logs to a local file |
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""" |
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while not self.log_queue.is_empty(): |
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log_json = self.log_queue.pop() |
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log_data = json.loads(log_json) |
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self.logger.log(log_data["lvl"], "["+log_data["uid"]+"] "+log_data["msg"]) |
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sleep(0.2) |
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def run(self): |
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self.logger.debug("Logger initiatied") |
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while not self.stop_event.isSet(): |
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self.write_logs() |
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sleep(0.5) |
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self.write_logs() |
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self.logger.info("Logger stopped") |
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usnistgov /
ocr-pipeline
