bdb.BdbQuit 在 uwsgi 服务器上的 Flask 应用 运行 中使用 pdb 时引发
bdb.BdbQuit raises when using pdb in Flask app running on uwsgi server
我正在使用 Flask-SocketIO library in my project. Because websockets need to "run in parallel" with main Flask app I'm required to use gevent-websocket 库。当我尝试在 create_app
方法中为调试器设置断点时出现问题:
我的 app.py
文件:
# monkey patching standard library before importing
# other modules
from gevent import monkey
monkey.patch_all()
import os
import logging.config
from flask import Flask
from dynaconf import FlaskDynaconf
...
# other imports
def configure_app(app):
'''
Configure app settings.
'''
FlaskDynaconf(app)
import pdb; pdb.set_trace()
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
...
def create_app(run_from_celery=False):
'''
Create new Flask app instance.
'''
app = Flask('automoticz')
configure_app(app)
# ...
return app
当我启动服务器时(我正在使用 uwsgi ),我收到以下错误:
$ uwsgi --http 0.0.0.0:5000 \
--gevent 1000 \
--http-websockets \
--master \
--wsgi-file automoticz/wsgi.py \
--callable app
Traceback (most recent call last):
File "automoticz/wsgi.py", line 3, in <module>
app = create_app()
File "./automoticz/app.py", line 138, in create_app
configure_app(app)
File "./automoticz/app.py", line 28, in configure_app
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
File "./automoticz/app.py", line 28, in configure_app
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
File "/usr/lib/python3.5/bdb.py", line 48, in trace_dispatch
return self.dispatch_line(frame)
File "/usr/lib/python3.5/bdb.py", line 67, in dispatch_line
if self.quitting: raise BdbQuit
bdb.BdbQuit
unable to load app 0 (mountpoint='') (callable not found or import error)
*** no app loaded. going in full dynamic mode ***
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 22694)
spawned uWSGI worker 1 (pid: 22702, cores: 1000)
spawned uWSGI http 1 (pid: 22703)
*** running gevent loop engine [addr:0x494fa0] ***
我尝试使用 gevent-tools 的补丁 pdb,但 import gtools.pdb; gtools.pdb.set_trace()
的结果相同
104 @app.before_request
105 def log_request_info():
106 import gtools.pdb
107 gtools.pdb.set_trace()
108 -> log_request(request)
(Pdb++)
2019-07-14 19:52:30 - flask.app - ERROR - Exception on /api/system/ws_devices [GET]
Traceback (most recent call last):
File "./automoticz/app.py", line 108, in log_request_info
log_request(request)
File "./automoticz/app.py", line 108, in log_request_info
log_request(request)
File "/usr/lib/python3.5/bdb.py", line 48, in trace_dispatch
return self.dispatch_line(frame)
File "/usr/lib/python3.5/bdb.py", line 67, in dispatch_line
if self.quitting: raise BdbQuit
bdb.BdbQuit
有什么方法可以让 pdb
在 gevent
下 运行 时正常工作吗?
深入研究后我意识到你不应该使用
from gevent.pywsgi import WSGIServer
application = WSGIServer((application.config.SERVER_HOST, application.config.SERVER_PORT), application)
因为它不起作用。所以你可以使用旧的 wsgi.py
版本。现在问题出现了,因为当你是 uwsgi
时没有 stdin
而它指向 /dev/null
。由于没有标准输入,调试器无法启动。请参阅下面的线程
How to debug python application under uWSGI?
所以你想要的是添加 --hounor-stdin
和 --gevent
而 运行 uwsgi
uwsgi --http 0.0.0.0:5000 \
--gevent 10 \
--http-websockets \
--master \
--wsgi-file automoticz/wsgi.py \
--honour-stdin
现在可以调试了
我正在使用 Flask-SocketIO library in my project. Because websockets need to "run in parallel" with main Flask app I'm required to use gevent-websocket 库。当我尝试在 create_app
方法中为调试器设置断点时出现问题:
我的 app.py
文件:
# monkey patching standard library before importing
# other modules
from gevent import monkey
monkey.patch_all()
import os
import logging.config
from flask import Flask
from dynaconf import FlaskDynaconf
...
# other imports
def configure_app(app):
'''
Configure app settings.
'''
FlaskDynaconf(app)
import pdb; pdb.set_trace()
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
...
def create_app(run_from_celery=False):
'''
Create new Flask app instance.
'''
app = Flask('automoticz')
configure_app(app)
# ...
return app
当我启动服务器时(我正在使用 uwsgi ),我收到以下错误:
$ uwsgi --http 0.0.0.0:5000 \
--gevent 1000 \
--http-websockets \
--master \
--wsgi-file automoticz/wsgi.py \
--callable app
Traceback (most recent call last):
File "automoticz/wsgi.py", line 3, in <module>
app = create_app()
File "./automoticz/app.py", line 138, in create_app
configure_app(app)
File "./automoticz/app.py", line 28, in configure_app
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
File "./automoticz/app.py", line 28, in configure_app
logging.config.fileConfig(app.config.LOGGING_SETTINGS)
File "/usr/lib/python3.5/bdb.py", line 48, in trace_dispatch
return self.dispatch_line(frame)
File "/usr/lib/python3.5/bdb.py", line 67, in dispatch_line
if self.quitting: raise BdbQuit
bdb.BdbQuit
unable to load app 0 (mountpoint='') (callable not found or import error)
*** no app loaded. going in full dynamic mode ***
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 22694)
spawned uWSGI worker 1 (pid: 22702, cores: 1000)
spawned uWSGI http 1 (pid: 22703)
*** running gevent loop engine [addr:0x494fa0] ***
我尝试使用 gevent-tools 的补丁 pdb,但 import gtools.pdb; gtools.pdb.set_trace()
104 @app.before_request
105 def log_request_info():
106 import gtools.pdb
107 gtools.pdb.set_trace()
108 -> log_request(request)
(Pdb++)
2019-07-14 19:52:30 - flask.app - ERROR - Exception on /api/system/ws_devices [GET]
Traceback (most recent call last):
File "./automoticz/app.py", line 108, in log_request_info
log_request(request)
File "./automoticz/app.py", line 108, in log_request_info
log_request(request)
File "/usr/lib/python3.5/bdb.py", line 48, in trace_dispatch
return self.dispatch_line(frame)
File "/usr/lib/python3.5/bdb.py", line 67, in dispatch_line
if self.quitting: raise BdbQuit
bdb.BdbQuit
有什么方法可以让 pdb
在 gevent
下 运行 时正常工作吗?
深入研究后我意识到你不应该使用
from gevent.pywsgi import WSGIServer
application = WSGIServer((application.config.SERVER_HOST, application.config.SERVER_PORT), application)
因为它不起作用。所以你可以使用旧的 wsgi.py
版本。现在问题出现了,因为当你是 uwsgi
时没有 stdin
而它指向 /dev/null
。由于没有标准输入,调试器无法启动。请参阅下面的线程
How to debug python application under uWSGI?
所以你想要的是添加 --hounor-stdin
和 --gevent
而 运行 uwsgi
uwsgi --http 0.0.0.0:5000 \
--gevent 10 \
--http-websockets \
--master \
--wsgi-file automoticz/wsgi.py \
--honour-stdin
现在可以调试了