cacto
0eed35289c
Go-сервис без внешних фронтенд-зависимостей: embedded HTML-страница
с SVG-изображением платы (датчик + вентилятор + свет + помпа) и
Server-Sent Events для live-обновления. Слушает devices/+/commands
и реально отвечает ack'ом, публикует devices/{id}/telemetry —
протокол зеркалит ingest-service/device-control-service основного
репозитория, общего кода между репозиториями нет. Дефолтные
external_id (sensor-1/fan-1/light-1/pump-1) совпадают с
DemoGrowboxSeeder платформы.
84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
// Command emulator serves a small web UI that stands in for an ESP32
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// growbox controller: a sensor slot (publishes temperature/humidity
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// telemetry) and three actuator slots (fan/light/pump — react live to
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// commands the platform sends over MQTT). See README.md for the protocol
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// this speaks and why it exists as a standalone tool.
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package main
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import (
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"context"
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"log/slog"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"git.cactoz.su/cacto/home_automation_emulator/internal/httpserver"
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"git.cactoz.su/cacto/home_automation_emulator/internal/mqttclient"
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"git.cactoz.su/cacto/home_automation_emulator/internal/state"
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)
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func main() {
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logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
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brokerURL := getEnv("MQTT_BROKER_URL", "tcp://localhost:1883")
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httpAddr := ":" + getEnv("HTTP_PORT", "8091")
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store := state.NewStore()
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mqttClient, err := mqttclient.Connect(mqttclient.Config{
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BrokerURL: brokerURL,
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ClientID: "esp32-emulator",
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}, logger)
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if err != nil {
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logger.Error("mqtt connect failed", "broker", brokerURL, "error", err)
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os.Exit(1)
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}
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defer mqttClient.Close()
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if err := mqttClient.SubscribeCommands(func(externalID, action string, level float64, hasLevel bool) {
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reported, ok := store.ApplyCommand(externalID, action, level, hasLevel)
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if !ok {
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logger.Warn("command for unknown device ignored", "device_id", externalID, "action", action)
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return
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}
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logger.Info("command applied", "device_id", externalID, "action", action)
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if err := mqttClient.PublishAck(externalID, reported); err != nil {
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logger.Error("publish ack failed", "device_id", externalID, "error", err)
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}
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}); err != nil {
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logger.Error("mqtt subscribe failed", "error", err)
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os.Exit(1)
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}
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srv := &http.Server{
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Addr: httpAddr,
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Handler: httpserver.New(store, mqttClient, logger),
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}
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go func() {
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logger.Info("http server listening", "addr", httpAddr, "mqtt_broker", brokerURL)
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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logger.Error("http server failed", "error", err)
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os.Exit(1)
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}
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}()
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ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
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defer stop()
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<-ctx.Done()
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logger.Info("shutting down")
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = srv.Shutdown(shutdownCtx)
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}
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func getEnv(key, fallback string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return fallback
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}
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