This splits the backend into two parts: the local backend for desktop cellxgene and the AWS backend for hosted cellxgene. The local backend is in local_server while the hosted remains in server. The general idea is to copy everything from server to local_server, pull unneeded stuff out of local_server, and keep server as-is for this PR. Not touching server means all the infra and deployment code will continue working just as it did before so we can make those changes incrementally.
* split out config
* add tests for base and app config, refactor client config out of app config
* refactor default config retrieval
* create config test class and helper functions
* move default_config into server to fix import issue
* Separate userinfo from the config endpoint
previously information about if the user was logged in and their username
was part of the config endpoint.
However, the config endpoint was previously static, and has a cache control.
Rather than not caching the config, a new endpoint called "userinfo"
is created to handle that information.
The config endpoint still has the non-changing part of the authentication:
config:
authentication:
requires_client_login: True/False
login: <uri to login endoint if requires_client_login is True>
logout: <uri to logout endoint if requires_client_login is True>
The userinfo endpoint returns this information:
userinfo:
is_authenticated: True/False
username: <string if is_authenticated>
if authentication is not enabled then the config does not have an authentication key,
and userinfo returns None.
Also in the PR are a few minor code improvements and bug fixes
Co-authored-by: Colin Megill <colinmegill@gmail.com>