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94 lines
2.6 KiB
94 lines
2.6 KiB
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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"""
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Log formatters that output terse JSON.
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"""
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import json
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import logging
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_encoder = json.JSONEncoder(ensure_ascii=False, separators=(",", ":"))
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# The properties of a standard LogRecord that should be ignored when generating
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# JSON logs.
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_IGNORED_LOG_RECORD_ATTRIBUTES = {
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"args",
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"asctime",
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"created",
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"exc_info",
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# exc_text isn't a public attribute, but is used to cache the result of formatException.
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"exc_text",
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"filename",
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"funcName",
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"levelname",
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"levelno",
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"lineno",
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"message",
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"module",
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"msecs",
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"msg",
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"name",
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"pathname",
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"process",
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"processName",
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"relativeCreated",
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"stack_info",
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"taskName",
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"thread",
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"threadName",
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}
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class JsonFormatter(logging.Formatter):
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def format(self, record: logging.LogRecord) -> str:
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event = {
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"log": record.getMessage(),
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"namespace": record.name,
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"level": record.levelname,
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}
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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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# 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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if key not in _IGNORED_LOG_RECORD_ATTRIBUTES:
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event[key] = value
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if record.exc_info:
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exc_type, exc_value, _ = record.exc_info
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if exc_type:
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event["exc_type"] = f"{exc_type.__name__}"
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event["exc_value"] = f"{exc_value}"
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return _encoder.encode(event)
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class TerseJsonFormatter(JsonFormatter):
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def format(self, record: logging.LogRecord) -> str:
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event = {
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"log": record.getMessage(),
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"namespace": record.name,
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"level": record.levelname,
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"time": round(record.created, 2),
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}
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return self._format(record, event)
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