Flask feature flag

Tool to activate and deactivate project functionalities

Package installation

• Installation

  $ pip3 install flask-feature-flag
  

Configuration

• Feature flag type availables.

  • FLASK_CONFIG
  • MONGO

• Define the following to your config.py

  FEATURE_FLAG_TYPE=
  

  FEATURE_FLAG_TYPE is required.

• You should add this to your config.py if it's feature type FLASK_CONFIG

  FEATURE_FLAGS = {
      'ROUTE_ENABLED': os.environ.get('ROUTE_ENABLED', True)
  }
  

  FEATURE_FLAGS is required.

Docs

• Flask-Feature-Flag’s documentation

Example:

is_enabled this decorator allows to activate or deactivate a functionality and receives as parameters a function to return in case feature is disabled and the name of the feature

from flask import Flask
from flask_caching import Cache
from flask_feature_flag import Flag

config = {
    "DEBUG": True,
    "CACHE_TYPE": "simple",
    "FEATURE_FLAG_TYPE": "MONGO"
}
app = Flask(__name__)
# tell Flask to use the above defined config
app.config.from_mapping(config)
cache = Cache(app)
flag = Flag(app, cache)

def error():
    return dict(massage='this is a mistake')

@flag.is_enabled(error, 'ENV_HELLO')
def hello(name):
    return dict(message=f'Hi, {name}')