[erlang-questions] starting otp application dependencies
Wed Apr 8 12:49:16 CEST 2015
Given an OTP application with dependencies, is there a way to automatically
start these dependencies before starting the application itself, during
In production, I can create a release (using relx for example). But during
development, I compile the application with rebar, then run erl (erl -pa ebin
deps/*/ebin), then my application (application:start(App)).
Even though app(4) indicates that the 'applications' list in the app file
contains "All applications which must be started before this application is
allowed to be started", application:start(App) does not automatically start all
dependencies of App.
This also means that indirect dependencies must be found and started manually.
Therefore if my application depends on webmachine, I have to find all the
dependencies of webmachine (and there are more than a few).
There obviously is a simpler way. A trick would be to add a function available
in erl which parse an app file and load all dependencies, but then I still
have to find all indirect dependencies.
How do you avoid these issues yourself ?
Thank you in advance.
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