53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
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import threading
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import os
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from logging import Logger, Handler, LogRecord, Formatter
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class LogPipe(threading.Thread):
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def __init__(self, level: int, logger: Logger, prefix: str = ""):
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threading.Thread.__init__(self)
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self.daemon = False
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self.level = level
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self.logger = logger
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self.prefix = prefix
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self.fdRead, self.fdWrite = os.pipe()
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self.pipeReader = os.fdopen(self.fdRead)
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self.start()
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def fileno(self):
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return self.fdWrite
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def run(self):
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for line in iter(self.pipeReader.readline, ''):
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self.logger.log(self.level, "{}: {}".format(self.prefix, line.strip('\n')))
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self.pipeReader.close()
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def close(self):
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os.close(self.fdWrite)
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class HistoryHandler(Handler):
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handlers = {}
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@staticmethod
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def getHandler(name: str):
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if name not in HistoryHandler.handlers:
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HistoryHandler.handlers[name] = HistoryHandler()
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return HistoryHandler.handlers[name]
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def __init__(self, maxRecords: int = 200):
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super().__init__()
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self.history = []
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self.maxRecords = maxRecords
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self.setFormatter(Formatter(fmt="%(asctime)s - %(name)s - %(levelname)s - %(message)s"))
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def emit(self, record: LogRecord) -> None:
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self.history.append(record)
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# truncate
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self.history = self.history[-self.maxRecords:]
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def getFormattedHistory(self) -> str:
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return "\n".join([self.format(r) for r in self.history])
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