Accessing the API logger in Flask-Restful's resources

Question

I'm currently using flask-restful (http://flask-restful.readthedocs.io/en/0.3.5/index.html) to deploy resources as endpoints and I'm wondering if there's a way to access the API logger from within then resources classes. I've skimmed through the docs and couldn't find the appropriate answer.

Basically I want to do that :

from flask_restful import Resource 

class SomeEndpoint(Resource):

    def get(self):

        try:

            ... something throws an exception

        except SomeException as se:

            ... send custom message to API logger         <----- Here!

        return response

What I though of doing was passing the logger from the API through the constructor of the Resource like that :

App = Flask(__name__)
api = Api(App)
api.add_resource(SomeEndpoint, '/', resource_class_kwargs={'logger': App.logger})

Is this the most appropriate way to access the logger inside flask-restful resource endpoints ?

Thanks a lot

Answer 1

I know the answer has been chosen already, but there is a slightly different approach that also works.

First, import

from flask import current_app as app

in the resource file, and when calling the logger, do:

app.logger.info("This is an info message")

Answer 2

You need to define constructor of Resource. Here an example:

import logging


class SomeEndpoint(Resource):

    def __init__(self, **kwargs):
        self.logger = kwargs.get('logger')

    def get(self):
        # self.logger - 'logger' from resource_class_kwargs
        return self.logger.name  

api.add_resource(SomeEndpoint, '/', resource_class_kwargs={
    # any logger here...
    'logger': logging.getLogger('my_custom_logger')
})

Open your endpoint. You will see my_custom_logger. Hope this helps.