WSGI 未将来自 Flask @app.route 装饰器的默认日志记录行发送到 Apache2 error.out

Question

我们有一个 flask 应用运行正在 WSGI 上使用 apache2。

app.logger.<level>(message) 行在代码中工作正常。但是，@app.route 烧瓶装饰器生成的通用日志行不会出现。

当 flask 应用程序是运行手动时，它们会出现，而不是当运行通过 Apache2 WSGI 时。

如何让自动生成的日志行通过 WSGI

发送到 apache2 error.out 日志

即运行手动

# flask run
--------------------------------------------------------------------------------
DEBUG in app [/var/www/APP/lib/python3.4/site-packages/APPNAME/app.py:34]:
Using app defaults, please provide a valid config file
--------------------------------------------------------------------------------
 * Serving Flask app "APPNAME.app"
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
--------------------------------------------------------------------------------
ERROR in app [/var/www/APP/lib/python3.4/site-packages/APPNAME/app.py:102]:
TEST IN welcome(route)
--------------------------------------------------------------------------------
TEST IN welcome(route)
--------------------------------------------------------------------------------
WARNING in app [/var/www/APP/lib/python3.4/site-packages/APPNAME/app.py:103]:
TEST IN welcome(route)
--------------------------------------------------------------------------------
TEST IN welcome(route)
--------------------------------------------------------------------------------
INFO in app [/var/www/APP/lib/python3.4/site-packages/APPNAME/app.py:104]:
TEST IN welcome(route)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
DEBUG in app [/var/www/APP/lib/python3.4/site-packages/APPNAME/app.py:105]:
TEST IN welcome(route)
--------------------------------------------------------------------------------
127.0.0.1 - - [13/Aug/2018 14:44:45] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:45] "GET /static/css/selectize.css HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:45] "GET /static/css/material.min.css HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:46] "GET /static/css/style.css HTTP/1.1" 200 -

当运行通过WSGI时，代码中的日志行记录到apache2error.out，但是以[=23=开头的行] 从 Flask 装饰器本身内部创建的不会记录到 apache2 error.out。

-------------------------------------------- ----------------------

=== 当 WSGI 运行时未发送到 apache2 error.out 的行 ===

127.0.0.1 - - [13/Aug/2018 14:44:45] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:45] "GET /static/css/selectize.css HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:45] "GET /static/css/material.min.css HTTP/1.1" 200 -
127.0.0.1 - - [13/Aug/2018 14:44:46] "GET /static/css/style.css HTTP/1.1" 200 -

=== WSGI.py 文件 ===

#!/usr/bin/env python
# coding=utf-8
import os
import sys
import logging
import site

# The path of the APPNAME project directory is the same as the directory of this file
PROJECT_DIR = os.path.dirname(os.path.realpath(__file__))

logging.basicConfig(stream=sys.stderr)
level = logging.getLevelName('DEBUG')
logger= logging.getLogger(__file__)
logger.setLevel(level)
logger.debug("Logging enabled via \"logger=logging.getLogger('" +  __file__ + "'\"")

site.addsitedir(PROJECT_DIR)
sys.path.append(PROJECT_DIR)

from APPNAME.app import app as application

=== APPNAME.py 文件 ===

from APPNAME.workers import filter_genes, run_analyse

this_dir = os.path.dirname(os.path.abspath(__file__))
app = flask.Flask('APPNAME',
                  template_folder=os.path.join(this_dir, 'templates'),
                  static_folder=os.path.join(this_dir, 'static'))
app.secret_key = os.urandom(24)
app.config.from_pyfile(os.path.join(this_dir, 'config.py'))
app.logger.addHandler(logging.getLogger('rq.worker'))

try:
    user_config = app.config.from_pyfile(sys.argv[1])
except FileNotFoundError:
    msg = 'Using app defaults, please provide a valid config file'
    app.logger.debug(msg)
except IndexError:
    pass

Genome.init(app.config['DATA_PATH'])
Regulator.init(app.config['DATA_PATH'])

conn = Redis(charset="utf-8", decode_responses=True)
# assert redis is running
conn.ping()

@app.route('/')
def welcome():
    app.logger.error("TEST IN welcome(route)") #3333
    app.logger.warning("TEST IN welcome(route)") #3333
    app.logger.info("TEST IN welcome(route)") #3333
    app.logger.debug("TEST IN welcome(route)") #3333
    return render_template('welcome.html')

if __name__ == "__main__":
    print(app.config)
    app.run(debug=app.config['DEBUG'], host=app.config['HOST'], port=app.config['PORT'])

=== wsgi.py 配置文件 ===

# !/usr/bin/env python3
# coding=utf-8
DATA_PATH='/var/www/APP/data/'
SESSION_TTL=3600
RESULT_TTL=86400
REGULATORS_TTL=3600
MAX_RESULTS=100
SESSION_STORE="/tmp/APPNAME-{unique_id}"
PORT=5000
HOST='0.0.0.0'
DEBUG=True
TEMPLATES_AUTO_RELOAD = True

Answer 1

请求日志是开发服务器的一部分，在生产设置（或任何其他不使用开发服务器的设置）中，由网络服务器记录请求。

如果你真的想自己记录这些，你必须自己实现，例如当 Flask 拆除应用程序上下文时使用钩子。

WSGI 未将来自 Flask @app.route 装饰器的默认日志记录行发送到 Apache2 error.out

Default logging lines from Flask @app.route decorator not sent to Apache2 error.out by WSGI

logging

mod-wsgi

wsgi

apache2

flask