Improve comments in the structured logging code. (#10188)
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Improve comments in structured logging code.
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@ -20,8 +20,9 @@ import logging
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_encoder = json.JSONEncoder(ensure_ascii=False, separators=(",", ":"))
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_encoder = json.JSONEncoder(ensure_ascii=False, separators=(",", ":"))
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# The properties of a standard LogRecord.
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# The properties of a standard LogRecord that should be ignored when generating
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_LOG_RECORD_ATTRIBUTES = {
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# JSON logs.
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_IGNORED_LOG_RECORD_ATTRIBUTES = {
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"args",
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"args",
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"asctime",
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"asctime",
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"created",
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"created",
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@ -59,9 +60,9 @@ class JsonFormatter(logging.Formatter):
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return self._format(record, event)
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return self._format(record, event)
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def _format(self, record: logging.LogRecord, event: dict) -> str:
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def _format(self, record: logging.LogRecord, event: dict) -> str:
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# Add any extra attributes to the event.
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# Add attributes specified via the extra keyword to the logged event.
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for key, value in record.__dict__.items():
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for key, value in record.__dict__.items():
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if key not in _LOG_RECORD_ATTRIBUTES:
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if key not in _IGNORED_LOG_RECORD_ATTRIBUTES:
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event[key] = value
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event[key] = value
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return _encoder.encode(event)
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return _encoder.encode(event)
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