This is a library for using a heksher server from within python. Compatible with python 3.7, 3.8, and 3.9. The library contains both an asynchronous client, as well as a thread-based client. Also included are stub clients to make testing without a service simple.
# main.py
from contextvars import ContextVar
from heksher import AsyncHeksherClient, Setting
user = ContextVar('user', default='guest')
class App:
...
async def startup(self):
...
# initialize the client, and set it as the process' main client
self.heksher_client = AsyncHeksherClient('http://heksher.service.url',
update_interval=60,
context_features=['user', 'trust', 'theme'])
# set certain context features to be retrieved either from string constants or
# context variables
self.heksher_client.set_defaults(user = user, theme="light")
await self.heksher_client.set_as_main()
async def shutdown(self):
await self.heksher_client.close()
...
cache_size_setting = Setting('cache_size', type=int, configurable_features=['user', 'trust'], default_value=10)
def foo(trust: str):
...
# should be run after App.startup is completed
cache_size = cache_size_setting.get(trust=trust)
...Thread-based client usage is nearly identical.