add SaveMode for device which can be 0 (All) or a bitmask for what to save. It did not improve performance

app/api/devices.go

@@ -80,7 +80,7 @@ func Devices(r gin.IRoutes) {
 
 		go func() {
 			for _, device := range changed {
-				err := config.DeviceRepository().Save(context.Background(), &device)
+				err := config.DeviceRepository().Save(context.Background(), &device, models.SMState)
 				if err != nil {
 					log.Println("Failed to save device for state:", err)
 					continue
@@ -109,7 +109,7 @@ func Devices(r gin.IRoutes) {
 		for i := range devices {
 			devices[i].ApplyUpdate(update)
 
-			err := config.DeviceRepository().Save(context.Background(), &devices[i])
+			err := config.DeviceRepository().Save(context.Background(), &devices[i], models.SMProperties)
 			if err != nil {
 				log.Println("Failed to save device for state:", err)
 				continue
@@ -145,7 +145,7 @@ func Devices(r gin.IRoutes) {
 
 		go func() {
 			for _, device := range devices {
-				err := config.DeviceRepository().Save(context.Background(), &device)
+				err := config.DeviceRepository().Save(context.Background(), &device, models.SMState)
 				if err != nil {
 					log.Println("Failed to save device for state:", err)
 					continue
@@ -204,7 +204,7 @@ func Devices(r gin.IRoutes) {
 				device.Tags = append(device.Tags[:index], device.Tags[index+1:]...)
 			}
 
-			err = config.DeviceRepository().Save(ctxOf(c), device)
+			err = config.DeviceRepository().Save(ctxOf(c), device, models.SMTags)
 			if err != nil {
 				return nil, err
 			}

app/services/events.go

@@ -157,7 +157,7 @@ func handleEvent(event models.Event) (responses []models.Event) {
 		wg.Add(1)
 
 		go func(device models.Device) {
-			err := config.DeviceRepository().Save(context.Background(), &device)
+			err := config.DeviceRepository().Save(context.Background(), &device, models.SMState)
 			if err != nil {
 				log.Println("Failed to save device for state:", err)
 			}

app/services/synclights.go

@@ -66,7 +66,7 @@ func checkNewDevices() error {
 
 			log.Println("Saving new device", driverDevice.InternalID)
 
-			err := config.DeviceRepository().Save(ctx, &driverDevice)
+			err := config.DeviceRepository().Save(ctx, &driverDevice, models.SMState|models.SMProperties|models.SMTags)
 			if err != nil {
 				log.Println("Failed to save device:", err)
 				continue

internal/mysql/devicerepo.go

@@ -117,7 +117,7 @@ func (r *DeviceRepo) FetchByReference(ctx context.Context, kind models.Reference
 	return r.populate(ctx, records)
 }
 
-func (r *DeviceRepo) Save(ctx context.Context, device *models.Device) error {
+func (r *DeviceRepo) Save(ctx context.Context, device *models.Device, mode models.SaveMode) error {
 	tx, err := r.DBX.Beginx()
 	if err != nil {
 		return dbErr(err)
@@ -149,13 +149,18 @@ func (r *DeviceRepo) Save(ctx context.Context, device *models.Device) error {
 		}
 
 		// Let's just be lazy for now, optimize later if need be.
-		_, err = tx.ExecContext(ctx, "DELETE FROM device_tag WHERE device_id=?", record.ID)
-		if err != nil {
-			return dbErr(err)
+		if mode == 0 || mode&models.SMTags != 0 {
+			_, err = tx.ExecContext(ctx, "DELETE FROM device_tag WHERE device_id=?", record.ID)
+			if err != nil {
+				return dbErr(err)
+			}
 		}
-		_, err = tx.ExecContext(ctx, "DELETE FROM device_property WHERE device_id=?", record.ID)
-		if err != nil {
-			return dbErr(err)
+
+		if mode == 0 || mode&models.SMProperties != 0 {
+			_, err = tx.ExecContext(ctx, "DELETE FROM device_property WHERE device_id=?", record.ID)
+			if err != nil {
+				return dbErr(err)
+			}
 		}
 	} else {
 		res, err := tx.NamedExecContext(ctx, `
@@ -175,51 +180,57 @@ func (r *DeviceRepo) Save(ctx context.Context, device *models.Device) error {
 		device.ID = int(lastID)
 	}
 
-	for _, tag := range device.Tags {
-		_, err := tx.ExecContext(ctx, "INSERT INTO device_tag (device_id, tag_name) VALUES (?, ?)", record.ID, tag)
-		if err != nil {
-			return dbErr(err)
+	if mode == 0 || mode&models.SMTags != 0 {
+		for _, tag := range device.Tags {
+			_, err := tx.ExecContext(ctx, "INSERT INTO device_tag (device_id, tag_name) VALUES (?, ?)", record.ID, tag)
+			if err != nil {
+				return dbErr(err)
+			}
 		}
 	}
 
-	for key, value := range device.UserProperties {
-		_, err := tx.ExecContext(ctx, "INSERT INTO device_property (device_id, prop_key, prop_value, is_user) VALUES (?, ?, ?, 1)",
-			record.ID, key, value,
-		)
-		if err != nil {
-			return dbErr(err)
+	if mode == 0 || mode&models.SMProperties != 0 {
+		for key, value := range device.UserProperties {
+			_, err := tx.ExecContext(ctx, "INSERT INTO device_property (device_id, prop_key, prop_value, is_user) VALUES (?, ?, ?, 1)",
+				record.ID, key, value,
+			)
+			if err != nil {
+				return dbErr(err)
+			}
 		}
-	}
 
-	for key, value := range device.DriverProperties {
-		j, err := json.Marshal(value)
-		if err != nil {
-			// Eh, it'll get filled by the driver anyway
-			continue
-		}
+		for key, value := range device.DriverProperties {
+			j, err := json.Marshal(value)
+			if err != nil {
+				// Eh, it'll get filled by the driver anyway
+				continue
+			}
 
-		_, err = tx.ExecContext(ctx, "INSERT INTO device_property (device_id, prop_key, prop_value, is_user) VALUES (?, ?, ?, 0)",
-			record.ID, key, string(j),
-		)
-		if err != nil {
-			// Return err here anyway, it might put the tx in a bad state to ignore it.
-			return dbErr(err)
+			_, err = tx.ExecContext(ctx, "INSERT INTO device_property (device_id, prop_key, prop_value, is_user) VALUES (?, ?, ?, 0)",
+				record.ID, key, string(j),
+			)
+			if err != nil {
+				// Return err here anyway, it might put the tx in a bad state to ignore it.
+				return dbErr(err)
+			}
 		}
 	}
 
-	_, err = tx.NamedExecContext(ctx, `
+	if mode == 0 || mode&models.SMState != 0 {
+		_, err = tx.NamedExecContext(ctx, `
 			REPLACE INTO device_state(device_id, hue, saturation, kelvin, power, intensity) 
 			VALUES (:device_id, :hue, :saturation, :kelvin, :power, :intensity)
 	`, deviceStateRecord{
-		DeviceID:   record.ID,
-		Hue:        device.State.Color.Hue,
-		Saturation: device.State.Color.Saturation,
-		Kelvin:     device.State.Color.Kelvin,
-		Power:      device.State.Power,
-		Intensity:  device.State.Intensity,
-	})
-	if err != nil {
-		return dbErr(err)
+			DeviceID:   record.ID,
+			Hue:        device.State.Color.Hue,
+			Saturation: device.State.Color.Saturation,
+			Kelvin:     device.State.Color.Kelvin,
+			Power:      device.State.Power,
+			Intensity:  device.State.Intensity,
+		})
+		if err != nil {
+			return dbErr(err)
+		}
 	}
 
 	return tx.Commit()

models/device.go

@@ -20,8 +20,8 @@ type Device struct {
 }
 
 type DeviceUpdate struct {
-	Icon           *string             `json:"icon"`
-	Name           *string             `json:"name"`
+	Icon           *string            `json:"icon"`
+	Name           *string            `json:"name"`
 	UserProperties map[string]*string `json:"userProperties"`
 }
 
@@ -46,10 +46,18 @@ type NewDeviceState struct {
 
 type DeviceCapability string
 
+type SaveMode int
+
+const (
+	SMState      SaveMode = 1
+	SMProperties SaveMode = 2
+	SMTags       SaveMode = 4
+)
+
 type DeviceRepository interface {
 	Find(ctx context.Context, id int) (*Device, error)
 	FetchByReference(ctx context.Context, kind ReferenceKind, value string) ([]Device, error)
-	Save(ctx context.Context, device *Device) error
+	Save(ctx context.Context, device *Device, mode SaveMode) error
 	Delete(ctx context.Context, device *Device) error
 }