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Code Issues Projects Releases Packages Wiki Activity Actions 21

feat: config files and SSE (#83)

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Signed-off-by: mudler <mudler@mocaccino.org>
Signed-off-by: Tyler Gillson <tyler.gillson@gmail.com>
Co-authored-by: Tyler Gillson <tyler.gillson@gmail.com>
This commit is contained in:
Ettore Di Giacinto 2023-04-27 06:18:18 +02:00 • committed by GitHub
parent 4e2061636e
commit c806eae0de
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22 changed files with 984 additions and 419 deletions
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409
api/api.go
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@ -1,16 +1,9 @@
package api
import (
"encoding/json"
"errors"
"fmt"
"strings"
"sync"
model "github.com/go-skynet/LocalAI/pkg/model"
gpt2 "github.com/go-skynet/go-gpt2.cpp"
gptj "github.com/go-skynet/go-gpt4all-j.cpp"
llama "github.com/go-skynet/go-llama.cpp"
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v2/middleware/cors"
"github.com/gofiber/fiber/v2/middleware/recover"
@ -18,375 +11,7 @@ import (
"github.com/rs/zerolog/log"
)
// APIError provides error information returned by the OpenAI API.
type APIError struct {
Code any `json:"code,omitempty"`
Message string `json:"message"`
Param *string `json:"param,omitempty"`
Type string `json:"type"`
}
type ErrorResponse struct {
Error *APIError `json:"error,omitempty"`
}
type OpenAIResponse struct {
Created int `json:"created,omitempty"`
Object string `json:"chat.completion,omitempty"`
ID string `json:"id,omitempty"`
Model string `json:"model,omitempty"`
Choices []Choice `json:"choices,omitempty"`
}
type Choice struct {
Index int `json:"index,omitempty"`
FinishReason string `json:"finish_reason,omitempty"`
Message *Message `json:"message,omitempty"`
Text string `json:"text,omitempty"`
}
type Message struct {
Role string `json:"role,omitempty"`
Content string `json:"content,omitempty"`
}
type OpenAIModel struct {
ID string `json:"id"`
Object string `json:"object"`
}
type OpenAIRequest struct {
Model string `json:"model"`
// Prompt is read only by completion API calls
Prompt string `json:"prompt"`
Stop string `json:"stop"`
// Messages is read only by chat/completion API calls
Messages []Message `json:"messages"`
Echo bool `json:"echo"`
// Common options between all the API calls
TopP float64 `json:"top_p"`
TopK int `json:"top_k"`
Temperature float64 `json:"temperature"`
Maxtokens int `json:"max_tokens"`
N int `json:"n"`
// Custom parameters - not present in the OpenAI API
Batch int `json:"batch"`
F16 bool `json:"f16kv"`
IgnoreEOS bool `json:"ignore_eos"`
RepeatPenalty float64 `json:"repeat_penalty"`
Keep int `json:"n_keep"`
Seed int `json:"seed"`
}
// https://platform.openai.com/docs/api-reference/completions
func openAIEndpoint(chat, debug bool, loader *model.ModelLoader, threads, ctx int, f16 bool, mutexMap *sync.Mutex, mutexes map[string]*sync.Mutex) func(c *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
var err error
var model *llama.LLama
var gptModel *gptj.GPTJ
var gpt2Model *gpt2.GPT2
var stableLMModel *gpt2.StableLM
input := new(OpenAIRequest)
// Get input data from the request body
if err := c.BodyParser(input); err != nil {
return err
}
modelFile := input.Model
received, _ := json.Marshal(input)
log.Debug().Msgf("Request received: %s", string(received))
// Set model from bearer token, if available
bearer := strings.TrimLeft(c.Get("authorization"), "Bearer ")
bearerExists := bearer != "" && loader.ExistsInModelPath(bearer)
// If no model was specified, take the first available
if modelFile == "" {
models, _ := loader.ListModels()
if len(models) > 0 {
modelFile = models[0]
log.Debug().Msgf("No model specified, using: %s", modelFile)
}
}
// If no model is found or specified, we bail out
if modelFile == "" && !bearerExists {
return fmt.Errorf("no model specified")
}
// If a model is found in bearer token takes precedence
if bearerExists {
log.Debug().Msgf("Using model from bearer token: %s", bearer)
modelFile = bearer
}
// Try to load the model
var llamaerr, gpt2err, gptjerr, stableerr error
llamaOpts := []llama.ModelOption{}
if ctx != 0 {
llamaOpts = append(llamaOpts, llama.SetContext(ctx))
}
if f16 {
llamaOpts = append(llamaOpts, llama.EnableF16Memory)
}
// TODO: this is ugly, better identifying the model somehow! however, it is a good stab for a first implementation..
model, llamaerr = loader.LoadLLaMAModel(modelFile, llamaOpts...)
if llamaerr != nil {
gptModel, gptjerr = loader.LoadGPTJModel(modelFile)
if gptjerr != nil {
gpt2Model, gpt2err = loader.LoadGPT2Model(modelFile)
if gpt2err != nil {
stableLMModel, stableerr = loader.LoadStableLMModel(modelFile)
if stableerr != nil {
return fmt.Errorf("llama: %s gpt: %s gpt2: %s stableLM: %s", llamaerr.Error(), gptjerr.Error(), gpt2err.Error(), stableerr.Error()) // llama failed first, so we want to catch both errors
}
}
}
}
// This is still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
mutexMap.Lock()
l, ok := mutexes[modelFile]
if !ok {
m := &sync.Mutex{}
mutexes[modelFile] = m
l = m
}
mutexMap.Unlock()
l.Lock()
defer l.Unlock()
// Set the parameters for the language model prediction
topP := input.TopP
if topP == 0 {
topP = 0.7
}
topK := input.TopK
if topK == 0 {
topK = 80
}
temperature := input.Temperature
if temperature == 0 {
temperature = 0.9
}
tokens := input.Maxtokens
if tokens == 0 {
tokens = 512
}
predInput := input.Prompt
if chat {
mess := []string{}
// TODO: encode roles
for _, i := range input.Messages {
mess = append(mess, i.Content)
}
predInput = strings.Join(mess, "\n")
}
// A model can have a "file.bin.tmpl" file associated with a prompt template prefix
templatedInput, err := loader.TemplatePrefix(modelFile, struct {
Input string
}{Input: predInput})
if err == nil {
predInput = templatedInput
log.Debug().Msgf("Template found, input modified to: %s", predInput)
}
result := []Choice{}
n := input.N
if input.N == 0 {
n = 1
}
var predFunc func() (string, error)
switch {
case stableLMModel != nil:
predFunc = func() (string, error) {
// Generate the prediction using the language model
predictOptions := []gpt2.PredictOption{
gpt2.SetTemperature(temperature),
gpt2.SetTopP(topP),
gpt2.SetTopK(topK),
gpt2.SetTokens(tokens),
gpt2.SetThreads(threads),
}
if input.Batch != 0 {
predictOptions = append(predictOptions, gpt2.SetBatch(input.Batch))
}
if input.Seed != 0 {
predictOptions = append(predictOptions, gpt2.SetSeed(input.Seed))
}
return stableLMModel.Predict(
predInput,
predictOptions...,
)
}
case gpt2Model != nil:
predFunc = func() (string, error) {
// Generate the prediction using the language model
predictOptions := []gpt2.PredictOption{
gpt2.SetTemperature(temperature),
gpt2.SetTopP(topP),
gpt2.SetTopK(topK),
gpt2.SetTokens(tokens),
gpt2.SetThreads(threads),
}
if input.Batch != 0 {
predictOptions = append(predictOptions, gpt2.SetBatch(input.Batch))
}
if input.Seed != 0 {
predictOptions = append(predictOptions, gpt2.SetSeed(input.Seed))
}
return gpt2Model.Predict(
predInput,
predictOptions...,
)
}
case gptModel != nil:
predFunc = func() (string, error) {
// Generate the prediction using the language model
predictOptions := []gptj.PredictOption{
gptj.SetTemperature(temperature),
gptj.SetTopP(topP),
gptj.SetTopK(topK),
gptj.SetTokens(tokens),
gptj.SetThreads(threads),
}
if input.Batch != 0 {
predictOptions = append(predictOptions, gptj.SetBatch(input.Batch))
}
if input.Seed != 0 {
predictOptions = append(predictOptions, gptj.SetSeed(input.Seed))
}
return gptModel.Predict(
predInput,
predictOptions...,
)
}
case model != nil:
predFunc = func() (string, error) {
// Generate the prediction using the language model
predictOptions := []llama.PredictOption{
llama.SetTemperature(temperature),
llama.SetTopP(topP),
llama.SetTopK(topK),
llama.SetTokens(tokens),
llama.SetThreads(threads),
}
if debug {
predictOptions = append(predictOptions, llama.Debug)
}
if input.Stop != "" {
predictOptions = append(predictOptions, llama.SetStopWords(input.Stop))
}
if input.RepeatPenalty != 0 {
predictOptions = append(predictOptions, llama.SetPenalty(input.RepeatPenalty))
}
if input.Keep != 0 {
predictOptions = append(predictOptions, llama.SetNKeep(input.Keep))
}
if input.Batch != 0 {
predictOptions = append(predictOptions, llama.SetBatch(input.Batch))
}
if input.F16 {
predictOptions = append(predictOptions, llama.EnableF16KV)
}
if input.IgnoreEOS {
predictOptions = append(predictOptions, llama.IgnoreEOS)
}
if input.Seed != 0 {
predictOptions = append(predictOptions, llama.SetSeed(input.Seed))
}
return model.Predict(
predInput,
predictOptions...,
)
}
}
for i := 0; i < n; i++ {
prediction, err := predFunc()
if err != nil {
return err
}
if input.Echo {
prediction = predInput + prediction
}
if chat {
result = append(result, Choice{Message: &Message{Role: "assistant", Content: prediction}})
} else {
result = append(result, Choice{Text: prediction})
}
}
jsonResult, _ := json.Marshal(result)
log.Debug().Msgf("Response: %s", jsonResult)
// Return the prediction in the response body
return c.JSON(OpenAIResponse{
Model: input.Model, // we have to return what the user sent here, due to OpenAI spec.
Choices: result,
})
}
}
func listModels(loader *model.ModelLoader) func(ctx *fiber.Ctx) error {
return func(c *fiber.Ctx) error {
models, err := loader.ListModels()
if err != nil {
return err
}
dataModels := []OpenAIModel{}
for _, m := range models {
dataModels = append(dataModels, OpenAIModel{ID: m, Object: "model"})
}
return c.JSON(struct {
Object string `json:"object"`
Data []OpenAIModel `json:"data"`
}{
Object: "list",
Data: dataModels,
})
}
}
func App(loader *model.ModelLoader, threads, ctxSize int, f16 bool, debug, disableMessage bool) *fiber.App {
func App(configFile string, loader *model.ModelLoader, threads, ctxSize int, f16 bool, debug, disableMessage bool) *fiber.App {
zerolog.SetGlobalLevel(zerolog.InfoLevel)
if debug {
zerolog.SetGlobalLevel(zerolog.DebugLevel)
@ -415,23 +40,35 @@ func App(loader *model.ModelLoader, threads, ctxSize int, f16 bool, debug, disab
},
})
cm := make(ConfigMerger)
if err := cm.LoadConfigs(loader.ModelPath); err != nil {
log.Error().Msgf("error loading config files: %s", err.Error())
}
if configFile != "" {
if err := cm.LoadConfigFile(configFile); err != nil {
log.Error().Msgf("error loading config file: %s", err.Error())
}
}
if debug {
for k, v := range cm {
log.Debug().Msgf("Model: %s (config: %+v)", k, v)
}
}
// Default middleware config
app.Use(recover.New())
app.Use(cors.New())
// This is still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
mu := map[string]*sync.Mutex{}
var mumutex = &sync.Mutex{}
// openAI compatible API endpoint
app.Post("/v1/chat/completions", openAIEndpoint(true, debug, loader, threads, ctxSize, f16, mumutex, mu))
app.Post("/chat/completions", openAIEndpoint(true, debug, loader, threads, ctxSize, f16, mumutex, mu))
app.Post("/v1/chat/completions", openAIEndpoint(cm, true, debug, loader, threads, ctxSize, f16))
app.Post("/chat/completions", openAIEndpoint(cm, true, debug, loader, threads, ctxSize, f16))
app.Post("/v1/completions", openAIEndpoint(false, debug, loader, threads, ctxSize, f16, mumutex, mu))
app.Post("/completions", openAIEndpoint(false, debug, loader, threads, ctxSize, f16, mumutex, mu))
app.Post("/v1/completions", openAIEndpoint(cm, false, debug, loader, threads, ctxSize, f16))
app.Post("/completions", openAIEndpoint(cm, false, debug, loader, threads, ctxSize, f16))
app.Get("/v1/models", listModels(loader))
app.Get("/models", listModels(loader))
app.Get("/v1/models", listModels(loader, cm))
app.Get("/models", listModels(loader, cm))
return app
}