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gen_server_proxy lib gen_server proxy caller.ex
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lib/gen_server/proxy/caller.ex

defmodule GenServer.Proxy.Caller do
alias GenServer.Proxy.{Log, Timer}
@spec call(term, term, module) :: term | {:error, term}
def call(request, server_id, module) do
server = module.server_name(server_id)
try do
GenServer.call(server, request)
catch
:exit, reason ->
Log.error(:exit, {server, reason})
Timer.sleep(server, reason)
try do
GenServer.call(server, request)
catch
:exit, reason ->
Log.error(:exit, {server, reason})
module.server_unregistered(server_id)
{:error, reason}
end
end
end
end