airflow task_handler_with_custom_formatter 源码
airflow task_handler_with_custom_formatter 代码
文件路径：/airflow/utils/log/task_handler_with_custom_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.
"""Custom logging formatter for Airflow"""
from __future__ import annotations
import logging
from typing import TYPE_CHECKING
from airflow.configuration import conf
from airflow.utils.helpers import parse_template_string, render_template_to_string
if TYPE_CHECKING:
from jinja2 import Template
from airflow.models.taskinstance import TaskInstance
class TaskHandlerWithCustomFormatter(logging.StreamHandler):
"""Custom implementation of StreamHandler, a class which writes logging records for Airflow"""
prefix_jinja_template: Template | None = None
def set_context(self, ti) -> None:
"""
Accept the run-time context (i.e. the current task) and configure the formatter accordingly.
:param ti:
:return:
"""
if ti.raw or self.formatter is None:
return
prefix = conf.get('logging', 'task_log_prefix_template')
if prefix:
_, self.prefix_jinja_template = parse_template_string(prefix)
rendered_prefix = self._render_prefix(ti)
else:
rendered_prefix = ""
formatter = logging.Formatter(f"{rendered_prefix}:{self.formatter._fmt}")
self.setFormatter(formatter)
self.setLevel(self.level)
def _render_prefix(self, ti: TaskInstance) -> str:
if self.prefix_jinja_template:
jinja_context = ti.get_template_context()
return render_template_to_string(self.prefix_jinja_template, jinja_context)
logging.warning("'task_log_prefix_template' is in invalid format, ignoring the variable value")
return ""
相关信息
相关文章
airflow file_processor_handler 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦