52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstdio>
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#include <functional>
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#include <optional>
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#include <span>
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#include "wire.h"
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#include "timer_queue.h"
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struct responder {
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uint32_t message_id;
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std::function<void(std::span<const uint8_t>)> send;
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template <typename T>
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void respond(const T& msg) const {
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uint8_t buf[1024];
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span_writer out(buf, sizeof(buf));
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auto r = encode_response_into(out, message_id, msg);
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if (r) send({buf, *r});
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}
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};
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using handler_fn = void (*)(responder resp, std::span<const uint8_t> payload);
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struct handler_entry {
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int8_t type_id;
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handler_fn handle;
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};
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template <typename Req, auto Fn>
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void typed_handler(responder resp, std::span<const uint8_t> payload) {
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msgpack::parser p(payload.data(), static_cast<int>(payload.size()));
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Req req;
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auto tup = req.as_tuple();
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auto r = msgpack::unpack(p, tup);
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if (!r) {
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char err[64];
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snprintf(err, sizeof(err), "decode request ext_id=%d: msgpack error %d",
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Req::ext_id, static_cast<int>(r.error()));
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resp.respond(DeviceError{1, err});
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return;
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}
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auto result = Fn(resp, req);
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if (result)
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resp.respond(*result);
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}
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void dispatch_init();
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timer_handle dispatch_schedule_ms(uint32_t ms, std::function<void()> fn);
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bool dispatch_cancel_timer(timer_handle h);
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[[noreturn]] void dispatch_run(std::span<const handler_entry> handlers);
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