[erlang-questions] process hierarchy and passing references
Thu Aug 14 16:48:36 CEST 2014
Since I am very new to Erlang, I am not sure how to layout process
hierarchies in the following case:
Besides the domain specific functionality, every program has a RPC
middleman and an XML-RPC interface, each implemented as gen_servers. In
the current setup, the main gen_server process starts the RPC middleman,
passing it its Pid, and the RPC gen_server starts the XML-RPC server
which is passed the RPC middleman's Pid.
Using the passed in Pid's, the XML-RPC server can do a
gen_server:call()/cast() back to the RPC server which on its turn can
call the main server. Works ok, but I would like to have the RPC
middleman and XML-RPC controller under the control of a supervisor. The
main supervisor should start the main gen_server process plus a
supervisor that on its turn should start the RPC midleman and the
The thing I can't figure out is how the XML-RPC process should find the
RPC middleman process and how that process should locate the main server
when using supervision. Since there can be many RPC middlemen and
XMP-RPC servers around, each belonging to different main servers, naming
and registering seems a little hard.
So how to pass references around?
Any help will be very much appreciated.
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