Files
LocalAI/core/backend/face_embed.go
T
Richard Palethorpe 799cc9f211 feat: bound global admission and expose running backend traces (#11560)
feat: bound backend admission and expose running traces

Add process-wide backend execution admission without blocking UI or administrative HTTP work. Represent backend operations while they are in flight, surface running traces with immediate log links, and tie streaming admission leases to the gRPC receive lifecycle.

Assisted-by: OpenAI Codex: GPT-5

Signed-off-by: Richard Palethorpe <io@richiejp.com>
2026-08-18 08:56:59 +02:00

50 lines
1.3 KiB
Go

package backend
import (
"context"
"fmt"
"github.com/mudler/LocalAI/core/config"
"github.com/mudler/LocalAI/pkg/model"
)
// FaceEmbed loads the face recognition backend and returns a 512-d
// face embedding for the base64-encoded image. Unlike ModelEmbedding
// it passes the image through PredictOptions.Images — the insightface
// backend picks the highest-confidence face and returns its
// L2-normalized embedding.
func FaceEmbed(
ctx context.Context,
imgBase64 string,
loader *model.ModelLoader,
appConfig *config.ApplicationConfig,
modelConfig config.ModelConfig,
) ([]float32, error) {
opts := ModelOptions(modelConfig, appConfig)
faceModel, err := loader.Load(opts...)
if err != nil {
recordModelLoadFailure(appConfig, modelConfig.Name, modelConfig.Backend, err, nil)
return nil, err
}
if faceModel == nil {
return nil, fmt.Errorf("could not load face recognition model")
}
predictOpts := gRPCPredictOpts(modelConfig, loader.ModelPath)
predictOpts.Images = []string{imgBase64}
release, err := AcquireGlobalBackendSlot()
if err != nil {
return nil, err
}
defer release()
res, err := faceModel.Embeddings(ctx, predictOpts)
if err != nil {
return nil, err
}
if len(res.Embeddings) == 0 {
return nil, fmt.Errorf("face embedding returned empty vector (no face detected?)")
}
return res.Embeddings, nil
}