Alexander
307 lines
9.0 KiB
Go
307 lines
9.0 KiB
Go
package server
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import (
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"context"
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"errors"
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"github.com/rs/zerolog"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"github.com/metadata-agregator/internal/provider/musicbrainz"
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"github.com/metadata-agregator/internal/repository"
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"github.com/metadata-agregator/internal/service"
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metadatav1 "github.com/metadata-agregator/pkg/gen/metadata/v1"
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)
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type MetadataServer struct {
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metadatav1.UnimplementedMetadataServiceServer
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services map[metadatav1.Provider]*service.MetadataService
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}
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func NewMetadataServer(services map[metadatav1.Provider]*service.MetadataService) *MetadataServer {
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return &MetadataServer{services: services}
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}
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func (s *MetadataServer) getService(ctx context.Context, p metadatav1.Provider) (*service.MetadataService, error) {
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if p == metadatav1.Provider_PROVIDER_UNSPECIFIED {
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p = metadatav1.Provider_PROVIDER_MUSICBRAINZ
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}
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zerolog.Ctx(ctx).Debug().Str("provider", p.String()).Msg("resolved provider")
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svc, ok := s.services[p]
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if !ok {
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zerolog.Ctx(ctx).Warn().Str("provider", p.String()).Msg("unknown provider requested")
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return nil, status.Errorf(codes.InvalidArgument, "unknown provider: %v", p)
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}
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return svc, nil
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}
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func (s *MetadataServer) GetArtist(ctx context.Context, req *metadatav1.GetArtistRequest) (*metadatav1.GetArtistResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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var id string
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switch v := req.Identifier.(type) {
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case *metadatav1.GetArtistRequest_Id:
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id = v.Id
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log.Debug().Str("lookup", "id").Str("artist_id", id).Msg("getting artist")
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case *metadatav1.GetArtistRequest_External:
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id = v.External.SourceId
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log.Debug().Str("lookup", "external").Str("source_id", id).Str("source", v.External.Source).Msg("getting artist")
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default:
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log.Warn().Msg("get artist called without identifier")
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return nil, status.Error(codes.InvalidArgument, "identifier required")
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}
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artist, err := svc.GetArtist(ctx, id)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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log.Trace().Str("artist_id", artist.ID).Str("name", artist.Name).Msg("artist found")
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return &metadatav1.GetArtistResponse{Artist: toProtoArtist(artist)}, nil
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}
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func (s *MetadataServer) SearchArtists(ctx context.Context, req *metadatav1.SearchArtistsRequest) (*metadatav1.SearchArtistsResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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limit := int(req.Limit)
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if limit <= 0 {
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limit = 25
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}
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log.Debug().Str("query", req.Query).Int("limit", limit).Int("offset", int(req.Offset)).Msg("searching artists")
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result, err := svc.SearchArtists(ctx, req.Query, limit, int(req.Offset))
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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resp := &metadatav1.SearchArtistsResponse{
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Total: int32(result.Total),
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}
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for _, a := range result.Items {
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resp.Artists = append(resp.Artists, toProtoArtist(&a))
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}
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log.Trace().Int("total", result.Total).Int("returned", len(resp.Artists)).Msg("artist search complete")
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return resp, nil
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}
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func (s *MetadataServer) SearchAlbums(ctx context.Context, req *metadatav1.SearchAlbumsRequest) (*metadatav1.SearchAlbumsResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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limit := int(req.Limit)
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if limit <= 0 {
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limit = 25
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}
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albumTypes := defaultAlbumTypes(req.AlbumTypes)
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log.Debug().Str("query", req.Query).Str("artist", req.Artist).Int("limit", limit).Int("offset", int(req.Offset)).Strs("album_types", albumTypes).Msg("searching albums")
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result, err := svc.SearchAlbums(ctx, req.Query, req.Artist, limit, int(req.Offset), albumTypes)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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resp := &metadatav1.SearchAlbumsResponse{
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Total: int32(result.Total),
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}
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for _, a := range result.Items {
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resp.Albums = append(resp.Albums, toProtoAlbum(&a))
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}
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log.Trace().Int("total", result.Total).Int("returned", len(resp.Albums)).Msg("album search complete")
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return resp, nil
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}
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func (s *MetadataServer) GetAlbum(ctx context.Context, req *metadatav1.GetAlbumRequest) (*metadatav1.GetAlbumResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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var id string
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switch v := req.Identifier.(type) {
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case *metadatav1.GetAlbumRequest_Id:
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id = v.Id
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log.Debug().Str("lookup", "id").Str("album_id", id).Msg("getting album")
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case *metadatav1.GetAlbumRequest_External:
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id = v.External.SourceId
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log.Debug().Str("lookup", "external").Str("source_id", id).Str("source", v.External.Source).Msg("getting album")
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default:
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log.Warn().Msg("get album called without identifier")
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return nil, status.Error(codes.InvalidArgument, "identifier required")
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}
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album, err := svc.GetAlbum(ctx, id)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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log.Trace().Str("album_id", album.ID).Str("title", album.Title).Msg("album found")
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return &metadatav1.GetAlbumResponse{Album: toProtoAlbum(album)}, nil
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}
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func (s *MetadataServer) GetArtistAlbums(ctx context.Context, req *metadatav1.GetArtistAlbumsRequest) (*metadatav1.GetArtistAlbumsResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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limit := int(req.Limit)
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if limit <= 0 {
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limit = 25
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}
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albumTypes := defaultAlbumTypes(req.AlbumTypes)
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log.Debug().Str("artist_id", req.ArtistId).Int("limit", limit).Int("offset", int(req.Offset)).Strs("album_types", albumTypes).Msg("getting artist albums")
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result, err := svc.GetArtistAlbums(ctx, req.ArtistId, limit, int(req.Offset), albumTypes)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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resp := &metadatav1.GetArtistAlbumsResponse{
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Total: int32(result.Total),
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}
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for _, a := range result.Items {
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resp.Albums = append(resp.Albums, toProtoAlbum(&a))
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}
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log.Trace().Int("total", result.Total).Int("returned", len(resp.Albums)).Msg("artist albums retrieved")
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return resp, nil
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}
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func (s *MetadataServer) GetTrack(ctx context.Context, req *metadatav1.GetTrackRequest) (*metadatav1.GetTrackResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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var track *metadatav1.Track
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switch v := req.Identifier.(type) {
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case *metadatav1.GetTrackRequest_Id:
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log.Debug().Str("lookup", "id").Str("track_id", v.Id).Msg("getting track")
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t, err := svc.GetTrack(ctx, v.Id)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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track = toProtoTrack(t)
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case *metadatav1.GetTrackRequest_External:
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log.Debug().Str("lookup", "external").Str("source_id", v.External.SourceId).Str("source", v.External.Source).Msg("getting track")
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t, err := svc.GetTrack(ctx, v.External.SourceId)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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track = toProtoTrack(t)
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case *metadatav1.GetTrackRequest_Isrc:
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log.Debug().Str("lookup", "isrc").Str("isrc", v.Isrc).Msg("getting track")
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t, err := svc.GetTrackByISRC(ctx, v.Isrc)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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track = toProtoTrack(t)
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default:
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log.Warn().Msg("get track called without identifier")
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return nil, status.Error(codes.InvalidArgument, "identifier required")
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}
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log.Trace().Str("track_id", track.Id).Str("title", track.Title).Msg("track found")
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return &metadatav1.GetTrackResponse{Track: track}, nil
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}
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func (s *MetadataServer) GetAlbumTracks(ctx context.Context, req *metadatav1.GetAlbumTracksRequest) (*metadatav1.GetAlbumTracksResponse, error) {
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log := zerolog.Ctx(ctx)
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svc, err := s.getService(ctx, req.Provider)
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if err != nil {
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return nil, err
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}
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log.Debug().Str("album_id", req.AlbumId).Msg("getting album tracks")
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tracks, err := svc.GetAlbumTracks(ctx, req.AlbumId)
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if err != nil {
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return nil, toGRPCError(ctx, err)
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}
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resp := &metadatav1.GetAlbumTracksResponse{}
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for _, t := range tracks {
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resp.Tracks = append(resp.Tracks, toProtoTrack(&t))
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}
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log.Trace().Int("track_count", len(resp.Tracks)).Msg("album tracks retrieved")
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return resp, nil
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}
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func (s *MetadataServer) SyncArtist(ctx context.Context, req *metadatav1.SyncArtistRequest) (*metadatav1.SyncArtistResponse, error) {
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zerolog.Ctx(ctx).Warn().Msg("sync artist called but not implemented")
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return nil, status.Error(codes.Unimplemented, "sync not yet implemented")
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}
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var defaultTypes = []string{"album", "ep", "single"}
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func defaultAlbumTypes(types []string) []string {
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if len(types) > 0 {
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return types
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}
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return defaultTypes
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}
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func toGRPCError(ctx context.Context, err error) error {
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if err == nil {
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return nil
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}
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log := zerolog.Ctx(ctx)
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if errors.Is(err, repository.ErrNotFound) {
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log.Debug().Msg("entity not found")
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return status.Error(codes.NotFound, "not found")
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}
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if errors.Is(err, musicbrainz.ErrNotFound) {
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log.Debug().Msg("provider entity not found")
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return status.Error(codes.NotFound, "not found")
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}
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if errors.Is(err, musicbrainz.ErrRateLimited) {
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log.Warn().Msg("provider rate limited")
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return status.Error(codes.ResourceExhausted, "rate limited")
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}
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log.Error().Err(err).Msg("internal error")
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return status.Errorf(codes.Internal, "internal error: %v", err)
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}
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