mirror of
https://github.com/alibaba/higress.git
synced 2026-05-28 06:37:26 +08:00
feat(ai-proxy): Add provider: nvidia's triton-server (#2843)
This commit is contained in:
xingpiaoliang
GitHub
226
plugins/wasm-go/extensions/ai-proxy/provider/triton.go
Normal file
226
plugins/wasm-go/extensions/ai-proxy/provider/triton.go
Normal file
@@ -0,0 +1,226 @@
|
||||
package provider
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/alibaba/higress/plugins/wasm-go/extensions/ai-proxy/util"
|
||||
"github.com/higress-group/proxy-wasm-go-sdk/proxywasm/types"
|
||||
"github.com/higress-group/wasm-go/pkg/log"
|
||||
"github.com/higress-group/wasm-go/pkg/wrapper"
|
||||
)
|
||||
|
||||
const (
|
||||
tritonChatGenerationPath = "/v2/models/{MODEL_NAME}/generate"
|
||||
tritonChatGenerationWithVersionPath = "/v2/models/{MODEL_NAME}/versions/{MODEL_VERSION}/generate"
|
||||
tritonChatGenerationStreamPath = "/v2/models/{MODEL_NAME}/versions/generate_stream"
|
||||
tritonChatGenerationStreamWithVersionPath = "/v2/models/{MODEL_NAME}/versions/${MODEL_VERSION}/generate_stream"
|
||||
)
|
||||
|
||||
type tritonProviderInitializer struct{}
|
||||
|
||||
func (t *tritonProviderInitializer) ValidateConfig(config *ProviderConfig) error {
|
||||
if config.apiTokens == nil || len(config.apiTokens) == 0 {
|
||||
return errors.New("no apiToken found in provider config")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *tritonProviderInitializer) DefaultCapabilities() map[string]string {
|
||||
return map[string]string{
|
||||
string(ApiNameChatCompletion): tritonChatGenerationPath,
|
||||
// string(d): tritonChatCompletionPath,
|
||||
}
|
||||
}
|
||||
|
||||
func (t *tritonProviderInitializer) CreateProvider(config ProviderConfig) (Provider, error) {
|
||||
config.setDefaultCapabilities(t.DefaultCapabilities())
|
||||
return &tritonProvider{
|
||||
config: config,
|
||||
contextCache: createContextCache(&config),
|
||||
}, nil
|
||||
}
|
||||
|
||||
type tritonProvider struct {
|
||||
config ProviderConfig
|
||||
contextCache *contextCache
|
||||
}
|
||||
|
||||
func (t *tritonProvider) GetProviderType() string {
|
||||
return providerTypeTriton
|
||||
}
|
||||
|
||||
func (t *tritonProvider) OnRequestHeaders(ctx wrapper.HttpContext, apiName ApiName) error {
|
||||
t.config.handleRequestHeaders(t, ctx, apiName)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *tritonProvider) OnRequestBody(ctx wrapper.HttpContext, apiName ApiName, body []byte) (types.Action, error) {
|
||||
if !t.config.isSupportedAPI(apiName) {
|
||||
return types.ActionContinue, errUnsupportedApiName
|
||||
}
|
||||
return t.config.handleRequestBody(t, t.contextCache, ctx, apiName, body)
|
||||
}
|
||||
|
||||
func (t *tritonProvider) GetApiName(path string) ApiName {
|
||||
if strings.Contains(path, tritonChatGenerationPath) {
|
||||
return ApiNameChatCompletion
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (t *tritonProvider) TransformRequestBodyHeaders(ctx wrapper.HttpContext, apiName ApiName, body []byte, headers http.Header) ([]byte, error) {
|
||||
request := &chatCompletionRequest{}
|
||||
if err := t.config.parseRequestAndMapModel(ctx, request, body); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tritonRequest := t.BuildTritonTexGenRequest(request)
|
||||
|
||||
finalPath := t.getFinalRequestPath(ctx, request, request.Stream)
|
||||
util.OverwriteRequestPathHeader(headers, finalPath)
|
||||
util.OverwriteRequestHostHeader(headers, t.config.tritonDomain)
|
||||
log.Debugf("get current config.tritonDomain: %s", t.config.tritonDomain)
|
||||
headers.Del("Content-Length")
|
||||
|
||||
return json.Marshal(tritonRequest)
|
||||
}
|
||||
|
||||
func (t *tritonProvider) getFinalRequestPath(ctx wrapper.HttpContext, oriRequest *chatCompletionRequest, streaming bool) string {
|
||||
res := tritonChatGenerationPath
|
||||
log.Debugf("[Triton Server]: CurrentModelVersion: %s", t.config.tritonModelVersion)
|
||||
if t.config.tritonModelVersion != "" {
|
||||
res = tritonChatGenerationWithVersionPath
|
||||
res = strings.Replace(res, "{MODEL_VERSION}", t.config.tritonModelVersion, 1)
|
||||
}
|
||||
|
||||
res = strings.Replace(res, "{MODEL_NAME}", oriRequest.Model, 1)
|
||||
if streaming {
|
||||
res += "_stream"
|
||||
}
|
||||
|
||||
log.Debugf("[Triton Server]: Get final RequestPath: %v", res)
|
||||
return res
|
||||
}
|
||||
|
||||
type TritonGenerateRequest struct {
|
||||
Id string `json:"id"`
|
||||
TextInput string `json:"text_input"`
|
||||
Parameters TritonGenerateParameter `json:"parameters"`
|
||||
}
|
||||
|
||||
type TritonGenerateParameter struct {
|
||||
Stream bool `json:"stream"`
|
||||
Temperature float64 `json:"temperature"`
|
||||
}
|
||||
|
||||
type TritonGenerateResponse struct {
|
||||
Id string `json:"id"`
|
||||
ModelName string `json:"model_name"`
|
||||
ModelVersion string `json:"model_version"`
|
||||
TextOutput string `json:"text_output"`
|
||||
Error string `json:"error"`
|
||||
}
|
||||
|
||||
func (t *tritonProvider) BuildTritonTexGenRequest(origRequest *chatCompletionRequest) *TritonGenerateRequest {
|
||||
res := &TritonGenerateRequest{
|
||||
Id: "",
|
||||
TextInput: "",
|
||||
Parameters: TritonGenerateParameter{
|
||||
Stream: origRequest.Stream,
|
||||
Temperature: origRequest.Temperature,
|
||||
},
|
||||
}
|
||||
|
||||
for _, msg := range origRequest.Messages {
|
||||
res.Id = msg.Id
|
||||
res.TextInput = msg.StringContent()
|
||||
}
|
||||
return res
|
||||
}
|
||||
func (t *tritonProvider) TransformResponseBody(ctx wrapper.HttpContext, apiName ApiName, body []byte) ([]byte, error) {
|
||||
if apiName != ApiNameChatCompletion {
|
||||
return body, nil
|
||||
}
|
||||
tritonRes := &TritonGenerateResponse{}
|
||||
if err := json.Unmarshal(body, tritonRes); err != nil {
|
||||
return nil, fmt.Errorf("unable to unmarshal claude response: %v", err)
|
||||
}
|
||||
if tritonRes.Error != "" {
|
||||
return nil, fmt.Errorf("triton response error, error_message: %s", tritonRes.Error)
|
||||
}
|
||||
response := t.ParseResponse2OpenAI(tritonRes)
|
||||
return json.Marshal(response)
|
||||
}
|
||||
|
||||
func (t *tritonProvider) ParseResponse2OpenAI(tritonRes *TritonGenerateResponse) *chatCompletionResponse {
|
||||
res := &chatCompletionResponse{
|
||||
Id: tritonRes.Id,
|
||||
Choices: []chatCompletionChoice{{
|
||||
Index: 0,
|
||||
Message: &chatMessage{
|
||||
Id: "",
|
||||
Role: roleAssistant,
|
||||
Content: tritonRes.TextOutput,
|
||||
},
|
||||
FinishReason: util.Ptr(finishReasonStop),
|
||||
}},
|
||||
Model: tritonRes.ModelName,
|
||||
}
|
||||
return res
|
||||
}
|
||||
|
||||
func (t *tritonProvider) OnStreamingResponseBody(ctx wrapper.HttpContext, name ApiName, chunk []byte, isLastChunk bool) ([]byte, error) {
|
||||
log.Infof("[tritonProvider] receive chunk body: %s", string(chunk))
|
||||
if isLastChunk || len(chunk) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
if name != ApiNameChatCompletion {
|
||||
return chunk, nil
|
||||
}
|
||||
responseBuilder := &strings.Builder{}
|
||||
lines := strings.Split(string(chunk), "\n")
|
||||
for _, data := range lines {
|
||||
if len(data) < 6 {
|
||||
// ignore blank line or wrong format
|
||||
continue
|
||||
}
|
||||
data = data[6:]
|
||||
var tritonRes TritonGenerateResponse
|
||||
if err := json.Unmarshal([]byte(data), &tritonRes); err != nil {
|
||||
log.Errorf("unable to unmarshal triton response: %v", err)
|
||||
continue
|
||||
}
|
||||
response := t.buildOpenAIStreamResponse(ctx, &tritonRes)
|
||||
responseBody, err := json.Marshal(response)
|
||||
if err != nil {
|
||||
log.Errorf("unable to marshal response: %v", err)
|
||||
return nil, err
|
||||
}
|
||||
responseBuilder.WriteString(fmt.Sprintf("%s %s\n\n", streamDataItemKey, responseBody))
|
||||
}
|
||||
modifiedResponseChunk := responseBuilder.String()
|
||||
log.Debugf("[tritonStreamingProvider] modified response chunk: %s", modifiedResponseChunk)
|
||||
return []byte(modifiedResponseChunk), nil
|
||||
}
|
||||
|
||||
func (t *tritonProvider) buildOpenAIStreamResponse(ctx wrapper.HttpContext, tritonRes *TritonGenerateResponse) *chatCompletionResponse {
|
||||
var choice chatCompletionChoice
|
||||
choice.Delta = &chatMessage{
|
||||
Id: tritonRes.Id,
|
||||
Content: tritonRes.TextOutput,
|
||||
}
|
||||
streamResponse := chatCompletionResponse{
|
||||
Id: tritonRes.Id,
|
||||
Object: objectChatCompletionChunk,
|
||||
Created: time.Now().UnixMilli() / 1000,
|
||||
Model: tritonRes.ModelName,
|
||||
Choices: []chatCompletionChoice{choice},
|
||||
}
|
||||
return &streamResponse
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user