feat: EquipmentRuntime engine owner + secs_gemd gRPC daemon

Extract the SECS/GEM engine wiring out of the secs_server app into a
reusable class, and stand up a language-agnostic gRPC daemon on top so a
tool's software (any language) can drive the equipment without linking C++
or knowing SEMI. Foundation for replacing a vendor's SECS/GEM server.

Engine reuse:
- EquipmentRuntime (include/secsgem/gem/runtime.hpp, src/gem/runtime.cpp):
  owns io_context, passive Server, model, control-state machine, Router;
  thread-safe outbound API (set_variable/emit_event/set_alarm/clear_alarm),
  on_command hook, deliver_or_spool, run()/run_async()/poll()/stop().
- register_default_handlers (src/gem/default_handlers.cpp): the 56 GEM
  handlers + domain emitters, relocated from secs_server so the app and the
  daemon speak byte-identical GEM. secs_server.cpp reduced ~1270 -> 113 lines.
- name_index.hpp: resolve_variable(name) -> VID (the name->id binding layer).

Daemon (apps/secs_gemd.cpp, proto/secsgem/v1/equipment.proto):
- runs the engine + HSMS link on a background thread; serves the gRPC
  Equipment service. Increment 1: SetVariables (name-resolved, plain
  value->Item) and GetControlState. proto carries the full v1 surface
  (universal + carrier/recipe/job tiers); remaining RPCs + the Subscribe
  command stream are next (docs/DAEMON_ROADMAP.md).
- CMake: opt-in SECSGEM_DAEMON, protoc/grpc_cpp_plugin codegen, gracefully
  skipped where protobuf/grpc++ are absent. Dockerfile gains the grpc deps.

Tests (proof): test_runtime, test_default_handlers (S1F1->S1F2, S2F41->hook),
test_name_index. Full suite 458/458, 2795 assertions; live server<->client
GEM300 demo still passes on the refactored server.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-06-10 18:01:16 +02:00
parent 4b4b2ac690
commit fc898f8410
14 changed files with 2135 additions and 1183 deletions
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#include "secsgem/gem/runtime.hpp"
#include "secsgem/gem/messages.hpp"
namespace secsgem::gem {
EquipmentRuntime::EquipmentRuntime(const Config& cfg)
: model_(std::make_shared<EquipmentDataModel>()),
log_(cfg.log),
active_conn_(std::make_shared<std::weak_ptr<Connection>>()) {
if (!cfg.spool_dir.empty()) {
model_->spool.enable_persistence(cfg.spool_dir);
log("spool: persisting to " + cfg.spool_dir + " (replayed " +
std::to_string(model_->spool.size()) + " messages)");
}
descriptor_ = config::load_equipment(cfg.equipment_yaml, *model_);
auto sm_cfg = config::load_control_state(cfg.control_state_yaml);
sm_ = std::make_shared<ControlStateMachine>(sm_cfg.table, sm_cfg.initial);
auto pj = config::load_process_job_state(cfg.process_job_yaml);
auto cj = config::load_control_job_state(cfg.control_job_yaml);
model_->process_jobs.set_table_factory([t = pj.table]() { return t; });
model_->control_jobs.set_table_factory([t = cj.table]() { return t; });
server_ = std::make_unique<Server>(
io_, Server::Config{cfg.port, descriptor_.device_id, {}});
server_->on_log([this](const std::string& m) { log(m); });
wire_connection();
}
EquipmentRuntime::~EquipmentRuntime() { stop(); }
bool EquipmentRuntime::deliver_or_spool(secs2::Message msg,
const std::string& what) {
auto conn = active_conn_->lock();
const bool spooling = model_->spool.force_spool() || !conn;
if (spooling) {
auto r = model_->spool.enqueue(msg);
if (r == SpoolStore::EnqueueResult::Queued) {
log("spool: " + what + " queued (depth=" +
std::to_string(model_->spool.size()) + ")");
return true;
}
log("spool: " + what + " dropped (stream not spoolable, no host)");
return false;
}
if (msg.reply_expected) {
conn->send_request(std::move(msg), [](std::error_code, const secs2::Message&) {});
} else {
conn->send_data(std::move(msg));
}
return true;
}
void EquipmentRuntime::set_variable(uint32_t vid, secs2::Item value) {
asio::post(io_, [this, vid, value = std::move(value)]() mutable {
if (model_->svids.has(vid)) model_->svids.set_value(vid, std::move(value));
else if (model_->dvids.has(vid)) model_->dvids.set_value(vid, std::move(value));
});
}
void EquipmentRuntime::emit_event(uint32_t ceid) {
asio::post(io_, [this, ceid]() {
if (!model_->is_event_enabled(ceid)) {
log("CEID " + std::to_string(ceid) + " not enabled; suppressed");
return;
}
auto reports = model_->compose_reports_for(ceid);
log("emit S6F11 CEID=" + std::to_string(ceid) + " (" +
std::to_string(reports.size()) + " reports)");
deliver_or_spool(s6f11_event_report(0, ceid, reports),
"S6F11 CEID=" + std::to_string(ceid));
});
}
void EquipmentRuntime::set_alarm(uint32_t alid) {
asio::post(io_, [this, alid]() {
auto alarm = model_->alarms.get(alid);
if (!alarm) return;
auto alcd = model_->alarms.set_active(alid);
if (!alcd) return;
if (model_->alarms.enabled(alid)) {
log("emit S5F1 alarm set ALID=" + std::to_string(alid));
deliver_or_spool(s5f1_alarm_report(*alcd, alid, alarm->text),
"S5F1 ALID=" + std::to_string(alid));
} else {
log("alarm " + std::to_string(alid) + " not enabled; suppressed");
}
});
}
void EquipmentRuntime::clear_alarm(uint32_t alid) {
asio::post(io_, [this, alid]() {
auto alarm = model_->alarms.get(alid);
if (!alarm) return;
auto alcd = model_->alarms.clear_active(alid);
if (!alcd) return;
if (model_->alarms.enabled(alid)) {
log("emit S5F1 alarm clear ALID=" + std::to_string(alid));
deliver_or_spool(s5f1_alarm_report(*alcd, alid, alarm->text),
"S5F1 clear ALID=" + std::to_string(alid));
}
});
}
void EquipmentRuntime::wire_connection() {
server_->on_connection([this](std::shared_ptr<Connection> conn) {
*active_conn_ = conn;
conn->set_closed_handler([this](const std::string&) { active_conn_->reset(); });
conn->set_selected_handler([this]() {
log(std::string("host is online; control=") + control_state_name(sm_->state()));
if (model_->spool.size() == 0) return;
asio::post(io_, [this]() {
auto c = active_conn_->lock();
if (!c) return;
const uint32_t n = static_cast<uint32_t>(model_->spool.size());
log("spool: notifying host of " + std::to_string(n) + " queued messages");
c->send_request(s6f25_spool_data_ready(n),
[](std::error_code, const secs2::Message&) {});
});
});
std::weak_ptr<Connection> wconn = conn;
conn->set_message_handler([this, wconn](const secs2::Message& msg)
-> std::optional<secs2::Message> {
if (!router_.has_handler(msg.stream, msg.function)) {
auto c = wconn.lock();
if (c && c->current_header()) {
const uint8_t s9_function =
router_.has_handler_for_stream(msg.stream) ? 5 : 3;
log("unhandled S" + std::to_string(msg.stream) + "F" +
std::to_string(msg.function) + "; emitting S9F" +
std::to_string(s9_function));
c->emit_s9(s9_function, c->current_header()->encode());
}
}
return router_.dispatch(msg);
});
});
}
void EquipmentRuntime::run() {
server_->start();
io_.run();
}
void EquipmentRuntime::run_async() {
work_.emplace(asio::make_work_guard(io_));
server_->start();
io_thread_ = std::thread([this]() { io_.run(); });
}
void EquipmentRuntime::poll() {
// restart() clears the "stopped" state a prior drain leaves behind, so
// repeated poll() calls each run their freshly-posted handlers.
io_.restart();
io_.poll();
}
void EquipmentRuntime::stop() {
if (work_) {
work_->reset();
work_.reset();
}
io_.stop();
if (io_thread_.joinable()) io_thread_.join();
}
} // namespace secsgem::gem