LocalAI/api/localai/gallery.go
Ettore Di Giacinto 5dcfdbe51d feat: various refactorings
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
2023-07-15 01:19:43 +02:00

241 lines
6.1 KiB
Go

package localai
import (
"context"
"fmt"
"os"
"sync"
"time"
json "github.com/json-iterator/go"
config "github.com/go-skynet/LocalAI/api/config"
"github.com/go-skynet/LocalAI/pkg/gallery"
"github.com/gofiber/fiber/v2"
"github.com/google/uuid"
"github.com/rs/zerolog/log"
)
type galleryOp struct {
req gallery.GalleryModel
id string
galleries []gallery.Gallery
galleryName string
}
type galleryOpStatus struct {
Error error `json:"error"`
Processed bool `json:"processed"`
Message string `json:"message"`
Progress float64 `json:"progress"`
TotalFileSize string `json:"file_size"`
DownloadedFileSize string `json:"downloaded_size"`
}
type galleryApplier struct {
modelPath string
sync.Mutex
C chan galleryOp
statuses map[string]*galleryOpStatus
}
func NewGalleryService(modelPath string) *galleryApplier {
return &galleryApplier{
modelPath: modelPath,
C: make(chan galleryOp),
statuses: make(map[string]*galleryOpStatus),
}
}
// prepareModel applies a
func prepareModel(modelPath string, req gallery.GalleryModel, cm *config.ConfigLoader, downloadStatus func(string, string, string, float64)) error {
config, err := gallery.GetGalleryConfigFromURL(req.URL)
if err != nil {
return err
}
config.Files = append(config.Files, req.AdditionalFiles...)
return gallery.InstallModel(modelPath, req.Name, &config, req.Overrides, downloadStatus)
}
func (g *galleryApplier) updateStatus(s string, op *galleryOpStatus) {
g.Lock()
defer g.Unlock()
g.statuses[s] = op
}
func (g *galleryApplier) getStatus(s string) *galleryOpStatus {
g.Lock()
defer g.Unlock()
return g.statuses[s]
}
func (g *galleryApplier) Start(c context.Context, cm *config.ConfigLoader) {
go func() {
for {
select {
case <-c.Done():
return
case op := <-g.C:
g.updateStatus(op.id, &galleryOpStatus{Message: "processing", Progress: 0})
// updates the status with an error
updateError := func(e error) {
g.updateStatus(op.id, &galleryOpStatus{Error: e, Processed: true, Message: "error: " + e.Error()})
}
// displayDownload displays the download progress
progressCallback := func(fileName string, current string, total string, percentage float64) {
g.updateStatus(op.id, &galleryOpStatus{Message: "processing", Progress: percentage, TotalFileSize: total, DownloadedFileSize: current})
displayDownload(fileName, current, total, percentage)
}
var err error
// if the request contains a gallery name, we apply the gallery from the gallery list
if op.galleryName != "" {
err = gallery.InstallModelFromGallery(op.galleries, op.galleryName, g.modelPath, op.req, progressCallback)
} else {
err = prepareModel(g.modelPath, op.req, cm, progressCallback)
}
if err != nil {
updateError(err)
continue
}
// Reload models
err = cm.LoadConfigs(g.modelPath)
if err != nil {
updateError(err)
continue
}
g.updateStatus(op.id, &galleryOpStatus{Processed: true, Message: "completed", Progress: 100})
}
}
}()
}
var lastProgress time.Time = time.Now()
var startTime time.Time = time.Now()
func displayDownload(fileName string, current string, total string, percentage float64) {
currentTime := time.Now()
if currentTime.Sub(lastProgress) >= 5*time.Second {
lastProgress = currentTime
// calculate ETA based on percentage and elapsed time
var eta time.Duration
if percentage > 0 {
elapsed := currentTime.Sub(startTime)
eta = time.Duration(float64(elapsed)*(100/percentage) - float64(elapsed))
}
if total != "" {
log.Debug().Msgf("Downloading %s: %s/%s (%.2f%%) ETA: %s", fileName, current, total, percentage, eta)
} else {
log.Debug().Msgf("Downloading: %s", current)
}
}
}
type galleryModel struct {
gallery.GalleryModel
ID string `json:"id"`
}
func ApplyGalleryFromFile(modelPath, s string, cm *config.ConfigLoader, galleries []gallery.Gallery) error {
dat, err := os.ReadFile(s)
if err != nil {
return err
}
return ApplyGalleryFromString(modelPath, string(dat), cm, galleries)
}
func ApplyGalleryFromString(modelPath, s string, cm *config.ConfigLoader, galleries []gallery.Gallery) error {
var requests []galleryModel
err := json.Unmarshal([]byte(s), &requests)
if err != nil {
return err
}
for _, r := range requests {
if r.ID == "" {
err = prepareModel(modelPath, r.GalleryModel, cm, displayDownload)
} else {
err = gallery.InstallModelFromGallery(galleries, r.ID, modelPath, r.GalleryModel, displayDownload)
}
}
return err
}
/// Endpoints
func GetOpStatusEndpoint(g *galleryApplier) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
status := g.getStatus(c.Params("uuid"))
if status == nil {
return fmt.Errorf("could not find any status for ID")
}
return c.JSON(status)
}
}
type GalleryModel struct {
ID string `json:"id"`
gallery.GalleryModel
}
func ApplyModelGalleryEndpoint(modelPath string, cm *config.ConfigLoader, g chan galleryOp, galleries []gallery.Gallery) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
input := new(GalleryModel)
// Get input data from the request body
if err := c.BodyParser(input); err != nil {
return err
}
uuid, err := uuid.NewUUID()
if err != nil {
return err
}
g <- galleryOp{
req: input.GalleryModel,
id: uuid.String(),
galleryName: input.ID,
galleries: galleries,
}
return c.JSON(struct {
ID string `json:"uuid"`
StatusURL string `json:"status"`
}{ID: uuid.String(), StatusURL: c.BaseURL() + "/models/jobs/" + uuid.String()})
}
}
func ListModelFromGalleryEndpoint(galleries []gallery.Gallery, basePath string) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
log.Debug().Msgf("Listing models from galleries: %+v", galleries)
models, err := gallery.AvailableGalleryModels(galleries, basePath)
if err != nil {
return err
}
log.Debug().Msgf("Models found from galleries: %+v", models)
for _, m := range models {
log.Debug().Msgf("Model found from galleries: %+v", m)
}
dat, err := json.Marshal(models)
if err != nil {
return err
}
return c.Send(dat)
}
}