Re: (Exposing?) config files and non-start/stop operations

[Ricardo Wurmus]

Christopher Allan Webber <address@hidden> writes:

>  - We could also have a shepherd action like "herd config mediagoblin"
>    that would merely spit out the configuration file path... so someone
>    could do something like:
>      $ foo-db dump-db --config `herd config foo-db`

Here’s another similar idea:

    herd environment <service> -- some command

The environment for a service may be represented by a bunch of
environment variables.  “some command” then runs within this
environment and can access the variables.

So if “foo-db” can read its configuration file from FOO_DB_CONFIG the
environment definition would be something like

    #~(("FOO_DB_CONFIG" . (string-append #$foo-db "/etc/config")))

In this case a user could do

    herd environment foo-db -- foo-db dump-db

If it doesn’t respect FOO_DB_CONFIG one could do

    herd environment foo-db -- 'foo-db dump-db --config $FOO_DB_CONFIG'

This is all just a crummy bash translation of a reader monad.

-- 
Ricardo

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