Manage application env from rebar3 profile

[I Gusti Ngurah Oka Prinarjaya]

Hi,

>> Should I use persistent_term instead of application:get_env?
Use application:get_env(YOUR_APP_NAME,
your_env_var1_defined_in_os_in_lowercase)

No need to use persistent_term , that's a different thing and not related
to consuming-os-env-vars task. Because I assume your needs is consuming OS
ENV vars.




Pada tanggal Min, 17 Nov 2019 pukul 01.41 I Gusti Ngurah Oka Prinarjaya <
okaprinarjaya@REDACTED> menulis:

> Hi,
>
> Yes it's possible.
>
> You can utilise sys.config with configurations content like below:
>
> [
>   {YOUR_APP_NAME, [
>     {your_env_var1_defined_in_os_in_lowercase,
> "${YOUR_ENV_VAR1_DEFINED_IN_OS}"},
>     {your_env_var2_defined_in_os_in_lowercase,
> "${YOUR_ENV_VAR2_DEFINED_IN_OS}"},
>     {your_env_var3_defined_in_os_in_lowercase,
> "${YOUR_ENV_VAR3_DEFINED_IN_OS}"},
>     .... you can define more here as much as you want
>   ]}
> ].
>
> Then, in order to be able shipping / bring sys.config into your release,
> you need to treat sys.config as a dynamic configuration source file.
>
> Follow steps below:
> 1. create a directory named config at root APP / project directory
> 2. create file sys.config inside config/ directory
> 3. the edit your rebar.config as below:
>
> {shell, [
>   {sys_config_src, "config/sys.config.src"},
>   {apps, [APP_NAME]}
> ]}.
>
> {relx, [
>   {sys_config_src, "config/sys.config.src"},
>   {
>     release,
>     {APP_NAME, "0.1.0"},
>   },
>   {dev_mode, true},
>   {extended_start_script, true}
> ]}.
>
> For further information you can read here:
> http://www.rebar3.org/docs/releases#section-dynamic-configuration
> and here: http://www.rebar3.org/docs/dynamic-configuration (more advance)
>
> Hope it helps.
>
>
>
>
> Pada tanggal Min, 17 Nov 2019 pukul 00.38 Nyirő Gergő <
> gergo.nyiro@REDACTED> menulis:
>
>> Dear list,
>>
>> I would like to change some constant during testing e.g.: cycle time
>> of a periodic job.
>> It would be ideal to manage it from rebar3 config, but I don't see how
>> should I edit
>> the application env variables from rebar3 profiles. Is that even
>> possible? Should I use
>> persistent_term instead of application:get_env?
>>
>> Thanks for your help in advance,
>> Gergő
>>
>
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