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@ -1,5 +1,9 @@
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import logging
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import sys
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from concurrent.futures import ThreadPoolExecutor, Executor
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# https://stackoverflow.com/a/45843022/10291933
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executor = ThreadPoolExecutor(max_workers=1)
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def create_logger(name: str, level: int = logging.DEBUG) -> logging.Logger:
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@ -22,14 +26,16 @@ def create_logger(name: str, level: int = logging.DEBUG) -> logging.Logger:
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console_formatter = ColorfulFormatter()
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# https://stackoverflow.com/a/16066513/10291933
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stdout_handler = logging.StreamHandler(stream=sys.stdout)
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stdout_handler = ExecutorStreamHandler(stream=sys.stdout,
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executor=executor)
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stdout_handler.setLevel(level=level)
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stdout_handler.addFilter(lambda record: record.levelno <= logging.INFO)
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stdout_handler.setFormatter(fmt=console_formatter)
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if stdout_handler not in logger.handlers:
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logger.addHandler(hdlr=stdout_handler)
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stderr_handler = logging.StreamHandler(stream=sys.stderr)
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stderr_handler = ExecutorStreamHandler(stream=sys.stderr,
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executor=executor)
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stderr_handler.setLevel(level=logging.WARNING)
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stderr_handler.setFormatter(fmt=console_formatter)
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if stderr_handler not in logger.handlers:
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@ -63,19 +69,36 @@ class ColorfulFormatter(logging.Formatter):
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formatter = logging.Formatter(log_fmt)
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return formatter.format(record)
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# class LOG_UTILS():
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# def __init__(self):
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# self.COLOR_RED="\033[1;31m"
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# self.COLOR_GREEN="\033[1;32m"
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# self.COLOR_YELLOW="\033[1;33m"
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# self.COLOR_BLUE="\033[1;34m"
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# self.COLOR_RESET="\033[0m"
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#
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# async def log_info(self, message:str):
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# print(f"{self.COLOR_GREEN}[{time.ctime()}] INFO:{self.COLOR_RESET} {message}")
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#
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# async def log_error(self, message:str):
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# print(f"{self.COLOR_RED}[{time.ctime()}] ERROR:{self.COLOR_RESET} {message}", file=sys.stderr)
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#
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# async def log_warn(self, message:str):
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# print(f"{self.COLOR_YELLOW}[{time.ctime()}] WARN:{self.COLOR_RESET} {message}")
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class ExecutorStreamHandler(logging.StreamHandler):
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def __init__(self, stream, executor: Executor):
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"""
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A StreamHandler that sends the functions to call to a Executor.
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:param stream: The stream to write to.
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:param executor: The executor to submit to.
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"""
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super().__init__(stream)
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self.executor = executor
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def emit(self, record: logging.LogRecord):
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"""
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Emit a record to the executor.
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:param record: The record to emit eventually. (via the executor)
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"""
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# super().emit(record)
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self.executor.submit(super().emit, record)
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def flush(self):
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"""
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Have the executor flush the stream.
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"""
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# super().flush()
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# return
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try:
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self.executor.submit(super().flush)
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except RuntimeError:
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# When the program stops we can't schedule the stream to be
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# flushed, so we do it synchronously
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super().flush()
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