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225 lines
4.9 KiB
225 lines
4.9 KiB
package light
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import (
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"context"
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"log"
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"net/http"
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"sync"
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"time"
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"git.aiterp.net/lucifer/lucifer/internal/httperr"
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"git.aiterp.net/lucifer/lucifer/models"
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)
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// ErrUnknownDriver is returned by any function asking for a driver name if the driver specified doesn't exist.
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var ErrUnknownDriver = httperr.Error{Status: http.StatusNotImplemented, Kind: "unknown_driver", Message: "Unknown light driver"}
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// A Service wraps the repos for lights and bridges and takes care of the business logic.
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type Service struct {
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mutex sync.Mutex
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bridges models.BridgeRepository
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lights models.LightRepository
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}
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// DirectConnect connects to a bridge directly, without going through the discovery process to find them..
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func (s *Service) DirectConnect(ctx context.Context, driver string, addr string, name string) (models.Bridge, error) {
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d, ok := drivers[driver]
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if !ok {
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return models.Bridge{}, ErrUnknownDriver
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}
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bridge := models.Bridge{
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ID: -1,
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Name: name,
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Addr: addr,
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Driver: driver,
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}
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bridge, err := d.Connect(ctx, bridge)
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if err != nil {
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return models.Bridge{}, httperr.Error{Status: http.StatusPreconditionFailed, Kind: "connect_failed", Message: err.Error()}
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}
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bridge, err = s.bridges.Insert(ctx, bridge)
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if err != nil {
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return models.Bridge{}, err
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}
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return bridge, nil
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}
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// SyncLights syncs all lights in a bridge with the state in the database.
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func (s *Service) SyncLights(ctx context.Context, bridge models.Bridge) error {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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d, ok := drivers[bridge.Driver]
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if !ok {
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return ErrUnknownDriver
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}
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bridgeLights, err := d.Lights(ctx, bridge)
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if err != nil {
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return err
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}
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dbLights, err := s.lights.ListByBridge(ctx, bridge)
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if err != nil {
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return err
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}
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// Add unknown lights
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for _, bridgeLight := range bridgeLights {
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found := false
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for _, dbLight := range dbLights {
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if dbLight.InternalID == bridgeLight.InternalID {
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found = true
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break
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}
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}
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// Add unknown lights if it doesn't exist in the databse.
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if !found {
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log.Println("Adding unknown light", bridgeLight.InternalID)
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bridgeLight.SetColor("FFFFFF")
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bridgeLight.Brightness = 254
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_, err := s.lights.Insert(ctx, bridgeLight)
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if err != nil {
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return err
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}
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}
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}
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changedLights, err := d.ChangedLights(ctx, bridge, dbLights...)
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if err != nil {
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return err
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}
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if len(changedLights) > 0 {
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err := d.Apply(ctx, bridge, changedLights...)
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if err != nil {
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log.Printf("Failed to apply one or more of the changes on bridge %d (%s): %s", bridge.ID, bridge.Name, err)
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}
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}
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return nil
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}
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// UpdateLight updates the light immediately.
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func (s *Service) UpdateLight(ctx context.Context, light models.Light) error {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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err := s.lights.Update(ctx, light)
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if err != nil {
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return err
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}
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bridge, err := s.bridges.FindByID(ctx, light.BridgeID)
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if err != nil {
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return httperr.NotFound("Bridge")
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}
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d, ok := drivers[bridge.Driver]
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if !ok {
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return ErrUnknownDriver
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}
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return d.Apply(ctx, bridge, light)
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}
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// SyncLoop runs synclight on all bridges twice every second until the context is
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// done.
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func (s *Service) SyncLoop(ctx context.Context) {
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interval := time.NewTicker(time.Millisecond * 2500)
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for {
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select {
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case <-interval.C:
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{
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bridges, err := s.Bridges(context.Background())
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if err != nil {
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log.Println("Could not get bridges:", err)
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}
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for _, bridge := range bridges {
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err = s.SyncLights(ctx, bridge)
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if err != nil {
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log.Println("Sync failed:", err)
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}
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}
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}
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case <-ctx.Done():
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{
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log.Println("Sync loop stopped.")
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return
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}
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}
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}
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}
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// Bridge gets a bridge by ID.
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func (s *Service) Bridge(ctx context.Context, id int) (models.Bridge, error) {
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return s.bridges.FindByID(ctx, id)
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}
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// Bridges gets all known bridges.
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func (s *Service) Bridges(ctx context.Context) ([]models.Bridge, error) {
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return s.bridges.List(ctx)
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}
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// DeleteBridge deletes the bridge.
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func (s *Service) DeleteBridge(ctx context.Context, bridge models.Bridge) error {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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err := s.bridges.Remove(ctx, bridge)
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if err != nil {
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return err
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}
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lights, err := s.lights.ListByBridge(ctx, bridge)
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if err != nil {
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return err
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}
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for _, light := range lights {
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err := s.lights.Remove(ctx, light)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// UpdateBridge updates a bridge.
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func (s *Service) UpdateBridge(ctx context.Context, bridge models.Bridge) error {
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s.mutex.Lock()
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defer s.mutex.Unlock()
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err := s.bridges.Update(ctx, bridge)
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if err != nil {
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return err
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}
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return nil
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}
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// DiscoverLights discovers new lights.
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func (s *Service) DiscoverLights(ctx context.Context, bridge models.Bridge) error {
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d, ok := drivers[bridge.Driver]
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if !ok {
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return ErrUnknownDriver
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}
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return d.DiscoverLights(ctx, bridge)
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}
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// NewService creates a new light.Service.
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func NewService(bridges models.BridgeRepository, lights models.LightRepository) *Service {
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return &Service{
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bridges: bridges,
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lights: lights,
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}
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}
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