Function Load

internal/config/config.go:190–260

(path string)

}

func Load(path string) (*Config, error) {
	raw, err := os.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("read config: %w", err)
	}

	expanded := expandEnvVars(string(raw))

	var cfg Config
	if err := yaml.Unmarshal([]byte(expanded), &cfg); err != nil {
		return nil, fmt.Errorf("unmarshal yaml: %w", err)
	}

	if cfg.Server.Port == 0 {
		cfg.Server.Port = 8080
	}
	if cfg.Server.RequestTimeoutMS <= 0 {
		cfg.Server.RequestTimeoutMS = 3000
	}
	if cfg.Server.HealthCacheTTLMS <= 0 {
		cfg.Server.HealthCacheTTLMS = 2000
	}
	if cfg.Server.HealthCheckPerMS <= 0 {
		cfg.Server.HealthCheckPerMS = 1500
	}
	if cfg.Telemetry.LogLevel == "" {
		cfg.Telemetry.LogLevel = "info"
	}
	if cfg.Telemetry.Exporter == "" {
		if strings.TrimSpace(cfg.Telemetry.OTLPEndpoint) != "" {
			cfg.Telemetry.Exporter = "otlp-http"
		} else {
			cfg.Telemetry.Exporter = "log"
		}
	}
	if cfg.Telemetry.OTLPTimeoutMS <= 0 {
		cfg.Telemetry.OTLPTimeoutMS = 1000
	}
	if cfg.Telemetry.OTLPRetries < 0 {
		cfg.Telemetry.OTLPRetries = 0
	}
	if cfg.Telemetry.OTLPBatchSize <= 0 {
		cfg.Telemetry.OTLPBatchSize = 10
	}
	if cfg.Telemetry.OTLPFlushMS <= 0 {
		cfg.Telemetry.OTLPFlushMS = 1000
	}
	if cfg.Routing.DefaultBackend == "" && len(cfg.Backends) > 0 {
		cfg.Routing.DefaultBackend = cfg.Backends[0].Name
	}
	if cfg.Reliability.Overload.QueueLimit <= 0 {
		cfg.Reliability.Overload.QueueLimit = 200
	}
	if cfg.Reliability.Overload.Action == "" {
		cfg.Reliability.Overload.Action = "degrade"
	}
	if cfg.SLO.MaxRecords <= 0 {
		cfg.SLO.MaxRecords = 10000