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Macula HTTP/3 Mesh SDK — connect, subscribe, publish, call, advertise
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Files
src/macula_rpc_executor.erl
%%%-------------------------------------------------------------------
%%% @doc
%%% RPC call execution with timeout handling.
%%% Executes local handlers and remote calls via QUIC.
%%% @end
%%%-------------------------------------------------------------------
-module(macula_rpc_executor).
%% API
-export([
execute_local/3,
execute_remote/5,
generate_call_id/0
]).
%% Types
-type handler_fn() :: macula_rpc_registry:handler_fn().
-type provider_info() :: macula_rpc_discovery:provider_info().
-type address() :: macula_rpc_discovery:address().
-type send_fun() :: fun((binary(), map(), address(), pos_integer()) ->
{ok, term()} | {error, term()}).
-export_type([send_fun/0]).
%%%===================================================================
%%% API Functions
%%%===================================================================
%% @doc Execute local handler with timeout.
-spec execute_local(handler_fn(), map(), pos_integer()) -> {ok, term()} | {error, term()}.
execute_local(Handler, Args, Timeout) ->
Parent = self(),
Ref = make_ref(),
%% Spawn worker process
WorkerPid = spawn(fun() ->
try
Result = Handler(Args),
Parent ! {Ref, Result}
catch
Class:Reason:Stacktrace ->
Parent ! {Ref, {error, {exception, Class, Reason, Stacktrace}}}
end
end),
%% Wait for result or timeout
receive
{Ref, Result} ->
Result
after Timeout ->
%% Timeout occurred, kill worker
exit(WorkerPid, kill),
{error, timeout}
end.
%% @doc Execute remote call via QUIC with timeout.
-spec execute_remote(binary(), map(), provider_info(), send_fun(), pos_integer()) ->
{ok, term()} | {error, term()}.
execute_remote(Uri, Args, Provider, SendFun, Timeout) ->
Address = maps:get(address, Provider),
%% Send call to remote provider
SendFun(Uri, Args, Address, Timeout).
%% @doc Generate unique call ID (16-byte UUID).
-spec generate_call_id() -> binary().
generate_call_id() ->
%% Generate 128-bit random UUID
<<A:64, B:64>> = crypto:strong_rand_bytes(16),
<<A:64, B:64>>.