squash merge from dev branch

exporter/config.go

@@ -0,0 +1,32 @@
+package exporter
+
+import (
+	"fmt"
+	"go.uber.org/zap"
+)
+
+type Config struct {
+	Devices []Device
+	Logger  *zap.SugaredLogger
+	Metrics PromMetrics
+}
+
+func (c *Config) FromFlags(device, address, user, password *string) error {
+	if *device == "" || *address == "" || *user == "" || *password == "" {
+		return fmt.Errorf("missing required param for single device configuration")
+	}
+
+	d := &Device{
+		Address:  *address,
+		Name:     *device,
+		User:     *user,
+		Password: *password,
+	}
+
+	*c = Config{
+		Devices: []Device{*d},
+	}
+
+	return nil
+
+}