I want to use Werkzeug as a local development server and cannot get the DebugApplication middle ware to work as documented - Werkzeug Debugging. Whats wrong here?
import webapp2
from system import config
from werkzeug.debug import DebuggedApplication
from werkzeug.serving import run_simple
application = webapp2.WSGIApplication(routes=config.routes, debug=False, config=config.options)
debugged_application = DebuggedApplication(application)
def main():
run_simple('localhost', 4000, debugged_application, use_reloader=True, use_debugger=True, threaded=True)
if __name__ == '__main__':
main()
I think that DebuggedApplication middleware tries to achieve the same as use_debugger=True, so no need to use both. The problem is that webapp2.WSGIApplication adds its own error handling before it goes through the debugger middleware, thus forbidding werkzeug debugger to see the actual exception.
My solution to this is to extend base WSGIApplication provided by webapp2 to re-raise the original exception. It works with python 2.7, and will pass the exception if and only if debug flag has been set to True in Application constructor.
class Application(webapp2.WSGIApplication):
def _internal_error(self, exception):
if self.debug:
raise
return super(Application, self)._internal_error(exception)
Not sure this is the cleanest possible way to do it, but it works for me.
Related
I have following code:
defmodule MyApp.Http do
use Application
require Logger
def start(_type, _args) do
import Supervisor.Spec, warn: false
MyApp.PlugPipelineInstrumenter.setup()
MyApp.MetricsExporter.setup()
opts = [strategy: :one_for_one, name: MyApp.Http.Supervisor]
Supervisor.start_link([], opts)
end
end
defmodule MyApp.MetricsExporter do
use Prometheus.PlugExporter
end
defmodule MyApp.PlugPipelineInstrumenter do
use Prometheus.PlugPipelineInstrumenter
end
But it does nothing. When I add:
plug MyApp.MetricsExporter
plug MyApp.PlugPipelineInstrumenter
I get compilation error: undefined function plug/1. I use elixir 1.10.3. What do I do wrong here?
I made a hex package called prometheus_sidecar that creates a ranch server dedicated to prometheus (so you could run it in any elixir application) and wires up prometheus_plugs for you.
It leverages erlang's application start lifecycle so there is no required configuration, besides adding it as a library to your application.
Let me know if you find it useful.
I followed https://fastapi.tiangolo.com/tutorial/bigger-applications/ resource to design my app
.....game/urls.py....
from fastapi import APIRouter
router = APIRouter()
#router.post("/", response_model=schemas.GameOut, tags=["games"])
def create_game(game: schemas.GameIn, db: Session = Depends(get_db)):
return Crud.create(db,game,model)
...main.py...
from game import urls as game_urls
app.include_router(game_urls,prefix="/games")
imported everything properly.
When i run uvicorn main:app --reload it is showing "NO attribures 'routes' " error
I am not able to find, what is the mistake i am doing here. Could any one helps me.
It seems you're injecting the entire urls module in your last line;
app.include_router(game_urls, prefix="/games")
^
I believe you should only inject the router object, e.g. (you might want to import just the router here instead)
app.include_router(game_urls.router, prefix="/games")
Also if you have issue with #router not existing make sure you define the APIRouter as router and not web_router = APIRouter()
I installed Django and was able to double check that the module was in fact in Python, but when attempting to implement basic commands such as runserver or utilize manage.py; I get DJANGO_SETTEINGS_MODULE error. I already used "set DJANGO_SETTINGS_MODULE = mysite.settings" as advised and inserted mysite.settings into the PATH for Python as some documentation online directed me to.
Now instead of undefined it says no such module exists. I can't find anything else in the documentation and I used my test site name instead of "mysite" without any change. Does anyone know what am I missing? All I can find in the module library for Django in my Python is this code.
from future import unicode_literals
from django.utils.version import get_version
VERSION = (1, 11, 5, 'final', 0)
__version__ = get_version(VERSION)
def setup(set_prefix=True):
"""
Configure the settings (this happens as a side effect of accessing the first setting), configure logging and populate the app registry.
Set the thread-local urlresolvers script prefix if `set_prefix` is True.
"""
from django.apps import apps
from django.conf import settings
from django.urls import set_script_prefix
from django.utils.encoding import force_text
from django.utils.log import configure_logging
configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
if set_prefix:
set_script_prefix(
'/' if settings.FORCE_SCRIPT_NAME is None else force_text(settings.FORCE_SCRIPT_NAME)
)
apps.populate(settings.INSTALLED_APPS)
Are you sure you wrote properly the environment variable? I'm asking cause I see you get the error DJANGO_SETTEINGS_MODULE (settings has a misspelling)...
I have an application that works in development, but when I try to run it with Gunicorn it gives an error that the "sqlalchemy extension was not registered". From what I've read it seems that I need to call app.app_context() somewhere, but I'm not sure where. How do I fix this error?
# run in development, works
python server.py
# try to run with gunicorn, fails
gunicorn --bind localhost:8000 server:app
AssertionError: The sqlalchemy extension was not registered to the current application. Please make sure to call init_app() first.
server.py:
from flask.ext.security import Security
from database import db
from application import app
from models import Studio, user_datastore
security = Security(app, user_datastore)
if __name__ == '__main__':
# with app.app_context(): ??
db.init_app(app)
app.run()
application.py:
from flask import Flask
app = Flask(__name__)
app.config.from_object('config.ProductionConfig')
database.py:
from flask.ext.sqlalchemy import SQLAlchemy
db = SQLAlchemy()
Only when you start your app with python sever.py is the if __name__ == '__main__': block hit, where you're registering your database with your app.
You'll need to move that line, db.init_app(app), outside that block.
I would like to check internet connexion from my plone site. I tried a ping in a python script
## Script (Python) "pwreset_action.cpy"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind subpath=traverse_subpath
##title=Reset a user's password
##parameters=randomstring, userid=None, password=None, password2=None
from Products.CMFCore.utils import getToolByName
from Products.PasswordResetTool.PasswordResetTool import InvalidRequestError, ExpiredRequestError
import ping, socket
status = "success"
pw_tool = getToolByName(context, 'portal_password_reset')
try:
pw_tool.resetPassword(userid, randomstring, password)
except ExpiredRequestError:
status = "expired"
except InvalidRequestError:
status = "invalid"
except RuntimeError:
status = "invalid"
context.plone_log("TRYING TO PING")
try :
ping.verbose_ping('www.google.com' , run=3)
context.plone_log("PING DONE")
except socket.error, e:
context.plone_log("PING FAILED")
return state.set(status=status)
I got these errors :
2012-07-20T11:37:08 INFO SignalHandler Caught signal SIGTERM
------
2012-07-20T11:37:08 INFO Z2 Shutting down fast
------
2012-07-20T11:37:08 INFO ZServer closing HTTP to new connections
------
2012-07-20T11:37:42 INFO ZServer HTTP server started at Fri Jul 20 11:37:42 2012
Hostname: 0.0.0.0
Port: 8080
------
2012-07-20T11:37:42 WARNING SecurityInfo Conflicting security declarations for "setText"
------
2012-07-20T11:37:42 WARNING SecurityInfo Class "ATTopic" had conflicting security declarations
------
2012-07-20T11:37:46 INFO plone.app.theming Patched Zope Management Interface to disable theming.
------
2012-07-20T11:37:48 INFO PloneFormGen Patching plone.app.portlets ColumnPortletManagerRenderer to not catch Retry exceptions
------
2012-07-20T11:37:48 INFO Zope Ready to handle requests
------
Python Scripts in Zope are sandboxed (via RestrictedPython, which means that any module imports have to be declared safe first. Adding modules to the declared-safe list is generally a Bad Idea unless you know what you are doing.
To declare a module as importable into Python Scripts, you'll need to create a python package, then add the following code to it so it is executed when Zope starts:
from Products.PythonScripts.Utility import allow_module
allow_module('ping')
This'll allow any import from that module (use with caution)!
It's better to allow only specific methods and classes from a module; use a ModuleSecurity declaration for that:
from AccessControl import ModuleSecurityInfo
ModuleSecurityInfo('ping').declarePublic('verbose_ping')
ModuleSecurityInfo('socket').declarePublic('error')
This is documented in the Security chapter of the Zope Developers Guide, specifically the section on module security assertions.
Note that it nearly always is a better idea to do all this work in a tightly constrained method in unrestricted code (e.g. a regular python package), then allow that method to be used from a python script instead.
It won't work.
You CANNOT import arbitrary Python modules in RestrictedPython scripts, as in the answer you were told yesterday:
https://stackoverflow.com/a/11568316/315168
If you need to use arbitraty Python modules you need to write your own Plone add-on for that and use a BrowserView for the purpose. RestrictedPython through-the-web-browser development is not enough:
http://collective-docs.readthedocs.org/en/latest/getstarted/index.html