It is a very simple config server. I bet most of you have already done something similar but maybe this could be useful for someone else.
Usage:
Save your config files with ".config" extension wherever you want. In my case this will be priv/config/dev and priv/config/prod
Example structure of "priv" directory:
Example config file content (more examples could be found in priv/config directory of the project):
- Starting Cfgsrv
cfgsrv:start(),
cfgsrv:set_path("priv/config/dev"). %% Default path when application was started is priv/config- Reading config values
cfgsrv:get("app", "key"), %% "Value"
cfgsrv:get("app.key_with_subkeys", "subkey2"). %% subkey2_value
cfgsrv:get("app.key_with_subkeys", "nonexistent_key", my_default_value). %% my_default_value- Reading multiple values from config
%% You can also pass tuple {Key, Default_value} to get Default_value instead of 'undefined' when the key was not found
cfgsrv:get_multiple("app.key_with_subkeys.subkey1", ["subsubkey1", {"subsubkey2", default_value}, {"subsubkey3", default_value}]).
%% The result will be [subsubkey1_value, subsubkey2_value, default_value]- Updating configs
cfgsrv:update() %% This will update all configs data from the initial :PATH
cfgsrv:update("app") %% This will update only app.config data from the initial :PATH ("priv/config/dev")- Updating configs path
cfgsrv:set_path("priv/config/prod") %% This will change path from "dev" to "prod" and load new configs