mirror of
https://github.com/mudler/LocalAI.git
synced 2024-12-23 14:32:25 +00:00
299 lines
8.5 KiB
Go
299 lines
8.5 KiB
Go
package model
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import (
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"context"
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"fmt"
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"os"
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"os/signal"
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"path/filepath"
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"strings"
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"syscall"
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"time"
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grpc "github.com/go-skynet/LocalAI/pkg/grpc"
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"github.com/hashicorp/go-multierror"
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"github.com/hpcloud/tail"
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"github.com/phayes/freeport"
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"github.com/rs/zerolog/log"
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process "github.com/mudler/go-processmanager"
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)
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const (
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LlamaBackend = "llama"
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BloomzBackend = "bloomz"
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StarcoderBackend = "starcoder"
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GPTJBackend = "gptj"
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DollyBackend = "dolly"
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MPTBackend = "mpt"
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GPTNeoXBackend = "gptneox"
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ReplitBackend = "replit"
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Gpt2Backend = "gpt2"
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Gpt4AllLlamaBackend = "gpt4all-llama"
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Gpt4AllMptBackend = "gpt4all-mpt"
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Gpt4AllJBackend = "gpt4all-j"
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Gpt4All = "gpt4all"
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FalconBackend = "falcon"
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FalconGGMLBackend = "falcon-ggml"
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LlamaGrammarBackend = "llama-grammar"
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BertEmbeddingsBackend = "bert-embeddings"
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RwkvBackend = "rwkv"
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WhisperBackend = "whisper"
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StableDiffusionBackend = "stablediffusion"
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PiperBackend = "piper"
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LCHuggingFaceBackend = "langchain-huggingface"
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)
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var AutoLoadBackends []string = []string{
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LlamaBackend,
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Gpt4All,
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FalconBackend,
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GPTNeoXBackend,
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BertEmbeddingsBackend,
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LlamaGrammarBackend,
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FalconGGMLBackend,
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GPTJBackend,
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Gpt2Backend,
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DollyBackend,
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MPTBackend,
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ReplitBackend,
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StarcoderBackend,
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BloomzBackend,
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RwkvBackend,
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WhisperBackend,
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StableDiffusionBackend,
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PiperBackend,
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}
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func (ml *ModelLoader) StopGRPC() {
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for _, p := range ml.grpcProcesses {
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p.Stop()
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}
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}
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func (ml *ModelLoader) startProcess(grpcProcess, id string, serverAddress string) error {
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// Make sure the process is executable
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if err := os.Chmod(grpcProcess, 0755); err != nil {
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return err
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}
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log.Debug().Msgf("Loading GRPC Process: %s", grpcProcess)
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log.Debug().Msgf("GRPC Service for %s will be running at: '%s'", id, serverAddress)
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grpcControlProcess := process.New(
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process.WithTemporaryStateDir(),
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process.WithName(grpcProcess),
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process.WithArgs("--addr", serverAddress))
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ml.grpcProcesses[id] = grpcControlProcess
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if err := grpcControlProcess.Run(); err != nil {
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return err
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}
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log.Debug().Msgf("GRPC Service state dir: %s", grpcControlProcess.StateDir())
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// clean up process
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go func() {
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt, syscall.SIGTERM)
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<-c
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grpcControlProcess.Stop()
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}()
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go func() {
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t, err := tail.TailFile(grpcControlProcess.StderrPath(), tail.Config{Follow: true})
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if err != nil {
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log.Debug().Msgf("Could not tail stderr")
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}
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for line := range t.Lines {
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log.Debug().Msgf("GRPC(%s): stderr %s", strings.Join([]string{id, serverAddress}, "-"), line.Text)
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}
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}()
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go func() {
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t, err := tail.TailFile(grpcControlProcess.StdoutPath(), tail.Config{Follow: true})
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if err != nil {
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log.Debug().Msgf("Could not tail stdout")
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}
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for line := range t.Lines {
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log.Debug().Msgf("GRPC(%s): stdout %s", strings.Join([]string{id, serverAddress}, "-"), line.Text)
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}
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}()
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return nil
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}
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// starts the grpcModelProcess for the backend, and returns a grpc client
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// It also loads the model
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func (ml *ModelLoader) grpcModel(backend string, o *Options) func(string) (*grpc.Client, error) {
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return func(s string) (*grpc.Client, error) {
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log.Debug().Msgf("Loading GRPC Model %s: %+v", backend, *o)
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var client *grpc.Client
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getFreeAddress := func() (string, error) {
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port, err := freeport.GetFreePort()
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if err != nil {
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return "", fmt.Errorf("failed allocating free ports: %s", err.Error())
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}
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return fmt.Sprintf("127.0.0.1:%d", port), nil
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}
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// Check if the backend is provided as external
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if uri, ok := o.externalBackends[backend]; ok {
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log.Debug().Msgf("Loading external backend: %s", uri)
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// check if uri is a file or a address
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if _, err := os.Stat(uri); err == nil {
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serverAddress, err := getFreeAddress()
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if err != nil {
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return nil, fmt.Errorf("failed allocating free ports: %s", err.Error())
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}
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// Make sure the process is executable
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if err := ml.startProcess(uri, o.modelFile, serverAddress); err != nil {
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return nil, err
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}
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log.Debug().Msgf("GRPC Service Started")
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client = grpc.NewClient(serverAddress)
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} else {
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// address
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client = grpc.NewClient(uri)
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}
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} else {
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grpcProcess := filepath.Join(o.assetDir, "backend-assets", "grpc", backend)
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// Check if the file exists
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if _, err := os.Stat(grpcProcess); os.IsNotExist(err) {
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return nil, fmt.Errorf("grpc process not found: %s. some backends(stablediffusion, tts) require LocalAI compiled with GO_TAGS", grpcProcess)
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}
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serverAddress, err := getFreeAddress()
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if err != nil {
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return nil, fmt.Errorf("failed allocating free ports: %s", err.Error())
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}
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// Make sure the process is executable
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if err := ml.startProcess(grpcProcess, o.modelFile, serverAddress); err != nil {
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return nil, err
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}
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log.Debug().Msgf("GRPC Service Started")
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client = grpc.NewClient(serverAddress)
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}
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// Wait for the service to start up
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ready := false
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for i := 0; i < 10; i++ {
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if client.HealthCheck(context.Background()) {
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log.Debug().Msgf("GRPC Service Ready")
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ready = true
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break
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}
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time.Sleep(1 * time.Second)
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}
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if !ready {
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log.Debug().Msgf("GRPC Service NOT ready")
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return nil, fmt.Errorf("grpc service not ready")
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}
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options := *o.gRPCOptions
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options.Model = s
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log.Debug().Msgf("GRPC: Loading model with options: %+v", options)
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res, err := client.LoadModel(o.context, &options)
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if err != nil {
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return nil, fmt.Errorf("could not load model: %w", err)
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}
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if !res.Success {
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return nil, fmt.Errorf("could not load model (no success): %s", res.Message)
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}
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return client, nil
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}
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}
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func (ml *ModelLoader) BackendLoader(opts ...Option) (model *grpc.Client, err error) {
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o := NewOptions(opts...)
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log.Debug().Msgf("Loading model %s from %s", o.backendString, o.modelFile)
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backend := strings.ToLower(o.backendString)
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// if an external backend is provided, use it
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_, externalBackendExists := o.externalBackends[backend]
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if externalBackendExists {
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return ml.LoadModel(o.modelFile, ml.grpcModel(backend, o))
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}
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switch backend {
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case LlamaBackend, LlamaGrammarBackend, GPTJBackend, DollyBackend,
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MPTBackend, Gpt2Backend, FalconBackend,
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GPTNeoXBackend, ReplitBackend, StarcoderBackend, BloomzBackend,
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RwkvBackend, LCHuggingFaceBackend, BertEmbeddingsBackend, FalconGGMLBackend, StableDiffusionBackend, WhisperBackend:
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return ml.LoadModel(o.modelFile, ml.grpcModel(backend, o))
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case Gpt4AllLlamaBackend, Gpt4AllMptBackend, Gpt4AllJBackend, Gpt4All:
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o.gRPCOptions.LibrarySearchPath = filepath.Join(o.assetDir, "backend-assets", "gpt4all")
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return ml.LoadModel(o.modelFile, ml.grpcModel(Gpt4All, o))
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case PiperBackend:
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o.gRPCOptions.LibrarySearchPath = filepath.Join(o.assetDir, "backend-assets", "espeak-ng-data")
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return ml.LoadModel(o.modelFile, ml.grpcModel(PiperBackend, o))
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default:
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return nil, fmt.Errorf("backend unsupported: %s", o.backendString)
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}
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}
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func (ml *ModelLoader) GreedyLoader(opts ...Option) (*grpc.Client, error) {
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o := NewOptions(opts...)
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// Is this really needed? BackendLoader already does this
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ml.mu.Lock()
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if m := ml.checkIsLoaded(o.modelFile); m != nil {
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log.Debug().Msgf("Model '%s' already loaded", o.modelFile)
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ml.mu.Unlock()
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return m, nil
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}
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ml.mu.Unlock()
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var err error
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// autoload also external backends
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allBackendsToAutoLoad := []string{}
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allBackendsToAutoLoad = append(allBackendsToAutoLoad, AutoLoadBackends...)
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for _, b := range o.externalBackends {
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allBackendsToAutoLoad = append(allBackendsToAutoLoad, b)
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}
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log.Debug().Msgf("Loading model '%s' greedly from all the available backends: %s", o.modelFile, strings.Join(allBackendsToAutoLoad, ", "))
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for _, b := range allBackendsToAutoLoad {
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log.Debug().Msgf("[%s] Attempting to load", b)
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options := []Option{
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WithBackendString(b),
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WithModelFile(o.modelFile),
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WithLoadGRPCLLMModelOpts(o.gRPCOptions),
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WithThreads(o.threads),
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WithAssetDir(o.assetDir),
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}
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for k, v := range o.externalBackends {
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options = append(options, WithExternalBackend(k, v))
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}
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model, modelerr := ml.BackendLoader(options...)
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if modelerr == nil && model != nil {
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log.Debug().Msgf("[%s] Loads OK", b)
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return model, nil
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} else if modelerr != nil {
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err = multierror.Append(err, modelerr)
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log.Debug().Msgf("[%s] Fails: %s", b, modelerr.Error())
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} else if model == nil {
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err = multierror.Append(err, fmt.Errorf("backend returned no usable model"))
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log.Debug().Msgf("[%s] Fails: %s", b, "backend returned no usable model")
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}
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}
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return nil, fmt.Errorf("could not load model - all backends returned error: %s", err.Error())
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}
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