def setLoggingLevel():
"""Set Logging Level Based on Feature Flag
This uses LaunchDarkly to update the logging level dynamically.
Before each request runs, we check the current logging level and
it does not match, we update it to the new value.
Logging levels are integer values based on the standard Logging library
in python: https://docs.python.org/3/library/logging.html#logging-levels
This is an operational feature flag.
"""
from flask import request
logLevel = app.ldclient.variation("set-logging-level",
getLdMachineUser(request),
logging.INFO)
app.logger.info("Log level is {0}".format(logLevel))
# set app
app.logger.setLevel(logLevel)
# set werkzeug
logging.getLogger("werkzeug").setLevel(logLevel)
# set root
logging.getLogger().setLevel(logLevel)
def __call__(self):
return ldclient.get().variation('disable-caching', getLdMachineUser(), True)
def caching_disabled():
return admin_ldclient.variation('disable-caching', getLdMachineUser(),
True)
from flask_login import LoginManager
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from app.config import config
from app.util import getLdMachineUser
from app.cli import deploy_command
db = SQLAlchemy()
migrate = Migrate()
bootstrap = Bootstrap()
login = LoginManager()
cache = Cache(config={'CACHE_TYPE': 'redis'})
# Operational Feature Flags
CACHE_TIMEOUT = lambda : ldclient.get().variation('cache-timeout', getLdMachineUser(), 50)
class CachingDisabled:
def __call__(self):
return ldclient.get().variation('disable-caching', getLdMachineUser(), True)
def create_app(config_name):
"""Flask application factory.
:param config_name: Flask Configuration
:type config_name: app.config class
:returns: a flask application
"""
app = Flask(__name__)
from flask_caching import Cache
from app.admin_ldclient import admin_ldclient
from app.util import getLdMachineUser
cache = Cache()
CACHE_TIMEOUT = lambda: admin_ldclient.variation('cache-timeout',
getLdMachineUser(), 50)
def caching_disabled():
return admin_ldclient.variation('disable-caching', getLdMachineUser(),
True)