feat: replace iot adapter with mqtt command pipeline

backend/iot-client/internal/config/config.go

@@ -0,0 +1,44 @@
+package config
+
+import (
+	"fmt"
+	"gopkg.in/yaml.v3"
+	"os"
+)
+
+type HTTP struct {
+	Address       string `yaml:"Address"`
+	InternalToken string `yaml:"InternalToken"`
+}
+type Upstream struct {
+	IoTServerURL   string `yaml:"IoTServerURL"`
+	PlatformAPIURL string `yaml:"PlatformAPIURL"`
+	Token          string `yaml:"Token"`
+}
+type Config struct {
+	Service  string   `yaml:"Service"`
+	HTTP     HTTP     `yaml:"HTTP"`
+	Upstream Upstream `yaml:"Upstream"`
+}
+
+func Load(path string) (Config, error) {
+	var cfg Config
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return cfg, err
+	}
+	if err = yaml.Unmarshal(data, &cfg); err != nil {
+		return cfg, err
+	}
+	override(&cfg.HTTP.InternalToken, "HEQI_IOT_INTERNAL_TOKEN")
+	override(&cfg.Upstream.Token, "HEQI_IOT_INTERNAL_TOKEN")
+	if cfg.HTTP.Address == "" || cfg.HTTP.InternalToken == "" || cfg.Upstream.IoTServerURL == "" || cfg.Upstream.PlatformAPIURL == "" {
+		return cfg, fmt.Errorf("HTTP 和 Upstream 配置不完整")
+	}
+	return cfg, nil
+}
+func override(target *string, name string) {
+	if value := os.Getenv(name); value != "" {
+		*target = value
+	}
+}