LocalAI/core/startup/startup.go

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package startup
import (
"fmt"
"os"
"github.com/go-skynet/LocalAI/core/config"
"github.com/go-skynet/LocalAI/core/services"
"github.com/go-skynet/LocalAI/internal"
"github.com/go-skynet/LocalAI/pkg/assets"
"github.com/go-skynet/LocalAI/pkg/model"
pkgStartup "github.com/go-skynet/LocalAI/pkg/startup"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
)
func Startup(opts ...config.AppOption) (*config.BackendConfigLoader, *model.ModelLoader, *config.ApplicationConfig, error) {
options := config.NewApplicationConfig(opts...)
zerolog.SetGlobalLevel(zerolog.InfoLevel)
if options.Debug {
zerolog.SetGlobalLevel(zerolog.DebugLevel)
}
log.Info().Msgf("Starting LocalAI using %d threads, with models path: %s", options.Threads, options.ModelPath)
log.Info().Msgf("LocalAI version: %s", internal.PrintableVersion())
// Make sure directories exists
if options.ModelPath == "" {
return nil, nil, nil, fmt.Errorf("options.ModelPath cannot be empty")
}
err := os.MkdirAll(options.ModelPath, 0755)
if err != nil {
return nil, nil, nil, fmt.Errorf("unable to create ModelPath: %q", err)
}
if options.ImageDir != "" {
err := os.MkdirAll(options.ImageDir, 0755)
if err != nil {
return nil, nil, nil, fmt.Errorf("unable to create ImageDir: %q", err)
}
}
if options.AudioDir != "" {
err := os.MkdirAll(options.AudioDir, 0755)
if err != nil {
return nil, nil, nil, fmt.Errorf("unable to create AudioDir: %q", err)
}
}
if options.UploadDir != "" {
err := os.MkdirAll(options.UploadDir, 0755)
if err != nil {
return nil, nil, nil, fmt.Errorf("unable to create UploadDir: %q", err)
}
}
//
pkgStartup.PreloadModelsConfigurations(options.ModelLibraryURL, options.ModelPath, options.ModelsURL...)
cl := config.NewBackendConfigLoader()
ml := model.NewModelLoader(options.ModelPath)
configLoaderOpts := options.ToConfigLoaderOptions()
if err := cl.LoadBackendConfigsFromPath(options.ModelPath, configLoaderOpts...); err != nil {
log.Error().Msgf("error loading config files: %s", err.Error())
}
if options.ConfigFile != "" {
if err := cl.LoadBackendConfigFile(options.ConfigFile, configLoaderOpts...); err != nil {
log.Error().Msgf("error loading config file: %s", err.Error())
}
}
if err := cl.Preload(options.ModelPath); err != nil {
log.Error().Msgf("error downloading models: %s", err.Error())
}
if options.PreloadJSONModels != "" {
if err := services.ApplyGalleryFromString(options.ModelPath, options.PreloadJSONModels, cl, options.Galleries); err != nil {
return nil, nil, nil, err
}
}
if options.PreloadModelsFromPath != "" {
if err := services.ApplyGalleryFromFile(options.ModelPath, options.PreloadModelsFromPath, cl, options.Galleries); err != nil {
return nil, nil, nil, err
}
}
if options.Debug {
for _, v := range cl.ListBackendConfigs() {
cfg, _ := cl.GetBackendConfig(v)
log.Debug().Msgf("Model: %s (config: %+v)", v, cfg)
}
}
if options.AssetsDestination != "" {
// Extract files from the embedded FS
err := assets.ExtractFiles(options.BackendAssets, options.AssetsDestination)
log.Debug().Msgf("Extracting backend assets files to %s", options.AssetsDestination)
if err != nil {
log.Warn().Msgf("Failed extracting backend assets files: %s (might be required for some backends to work properly, like gpt4all)", err)
}
}
// turn off any process that was started by GRPC if the context is canceled
go func() {
<-options.Context.Done()
log.Debug().Msgf("Context canceled, shutting down")
ml.StopAllGRPC()
}()
if options.WatchDog {
wd := model.NewWatchDog(
ml,
options.WatchDogBusyTimeout,
options.WatchDogIdleTimeout,
options.WatchDogBusy,
options.WatchDogIdle)
ml.SetWatchDog(wd)
go wd.Run()
go func() {
<-options.Context.Done()
log.Debug().Msgf("Context canceled, shutting down")
wd.Shutdown()
}()
}
log.Info().Msg("core/startup process completed!")
return cl, ml, options, nil
}