airflow json_formatter 源码
airflow json_formatter 代码
文件路径：/airflow/utils/log/json_formatter.py
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
"""json_formatter module stores all related to ElasticSearch specific logger classes"""
from __future__ import annotations
import json
import logging
from airflow.utils.helpers import merge_dicts
class JSONFormatter(logging.Formatter):
"""JSONFormatter instances are used to convert a log record to json."""
def __init__(self, fmt=None, datefmt=None, style='%', json_fields=None, extras=None):
super().__init__(fmt, datefmt, style)
if extras is None:
extras = {}
if json_fields is None:
json_fields = []
self.json_fields = json_fields
self.extras = extras
def usesTime(self):
return self.json_fields.count('asctime') > 0
def format(self, record):
super().format(record)
record_dict = {label: getattr(record, label, None) for label in self.json_fields}
if "message" in self.json_fields:
msg = record_dict["message"]
if record.exc_text:
if msg[-1:] != "\n":
msg = msg + "\n"
msg = msg + record.exc_text
if record.stack_info:
if msg[-1:] != "\n":
msg = msg + "\n"
msg = msg + self.formatStack(record.stack_info)
record_dict["message"] = msg
merged_record = merge_dicts(record_dict, self.extras)
return json.dumps(merged_record)
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