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feat: support baidu's embedding model (close #324)

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This commit is contained in:
JustSong 2023-07-29 12:15:07 +08:00
parent d1335ebc01
commit 130e6bfd83
5 changed files with 129 additions and 4 deletions
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1
common/model-ratio.go
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@ -42,6 +42,7 @@ var ModelRatio = map[string]float64{
"claude-2": 30,
"ERNIE-Bot": 0.8572, // ￥0.012 / 1k tokens
"ERNIE-Bot-turbo": 0.5715, // ￥0.008 / 1k tokens
"Embedding-V1": 0.1429, // ￥0.002 / 1k tokens
"PaLM-2": 1,
"chatglm_pro": 0.7143, // ￥0.01 / 1k tokens
"chatglm_std": 0.3572, // ￥0.005 / 1k tokens

9
controller/model.go
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@ -288,6 +288,15 @@ func init() {
Root: "ERNIE-Bot-turbo",
Parent: nil,
},
{
Id: "Embedding-V1",
Object: "model",
Created: 1677649963,
OwnedBy: "baidu",
Permission: permission,
Root: "Embedding-V1",
Parent: nil,
},
{
Id: "PaLM-2",
Object: "model",

85
controller/relay-baidu.go
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@ -54,6 +54,25 @@ type BaiduChatStreamResponse struct {
IsEnd bool `json:"is_end"`
}
type BaiduEmbeddingRequest struct {
Input []string `json:"input"`
}
type BaiduEmbeddingData struct {
Object string `json:"object"`
Embedding []float64 `json:"embedding"`
Index int `json:"index"`
}
type BaiduEmbeddingResponse struct {
Id string `json:"id"`
Object string `json:"object"`
Created int64 `json:"created"`
Data []BaiduEmbeddingData `json:"data"`
Usage Usage `json:"usage"`
BaiduError
}
func requestOpenAI2Baidu(request GeneralOpenAIRequest) *BaiduChatRequest {
messages := make([]BaiduMessage, 0, len(request.Messages))
for _, message := range request.Messages {
@ -112,6 +131,36 @@ func streamResponseBaidu2OpenAI(baiduResponse *BaiduChatStreamResponse) *ChatCom
return &response
}
func embeddingRequestOpenAI2Baidu(request GeneralOpenAIRequest) *BaiduEmbeddingRequest {
baiduEmbeddingRequest := BaiduEmbeddingRequest{
Input: nil,
}
switch request.Input.(type) {
case string:
baiduEmbeddingRequest.Input = []string{request.Input.(string)}
case []string:
baiduEmbeddingRequest.Input = request.Input.([]string)
}
return &baiduEmbeddingRequest
}
func embeddingResponseBaidu2OpenAI(response *BaiduEmbeddingResponse) *OpenAIEmbeddingResponse {
openAIEmbeddingResponse := OpenAIEmbeddingResponse{
Object: "list",
Data: make([]OpenAIEmbeddingResponseItem, 0, len(response.Data)),
Model: "baidu-embedding",
Usage: response.Usage,
}
for _, item := range response.Data {
openAIEmbeddingResponse.Data = append(openAIEmbeddingResponse.Data, OpenAIEmbeddingResponseItem{
Object: item.Object,
Index: item.Index,
Embedding: item.Embedding,
})
}
return &openAIEmbeddingResponse
}
func baiduStreamHandler(c *gin.Context, resp *http.Response) (*OpenAIErrorWithStatusCode, *Usage) {
var usage Usage
scanner := bufio.NewScanner(resp.Body)
@ -212,3 +261,39 @@ func baiduHandler(c *gin.Context, resp *http.Response) (*OpenAIErrorWithStatusCo
_, err = c.Writer.Write(jsonResponse)
return nil, &fullTextResponse.Usage
}
func baiduEmbeddingHandler(c *gin.Context, resp *http.Response) (*OpenAIErrorWithStatusCode, *Usage) {
var baiduResponse BaiduEmbeddingResponse
responseBody, err := io.ReadAll(resp.Body)
if err != nil {
return errorWrapper(err, "read_response_body_failed", http.StatusInternalServerError), nil
}
err = resp.Body.Close()
if err != nil {
return errorWrapper(err, "close_response_body_failed", http.StatusInternalServerError), nil
}
err = json.Unmarshal(responseBody, &baiduResponse)
if err != nil {
return errorWrapper(err, "unmarshal_response_body_failed", http.StatusInternalServerError), nil
}
if baiduResponse.ErrorMsg != "" {
return &OpenAIErrorWithStatusCode{
OpenAIError: OpenAIError{
Message: baiduResponse.ErrorMsg,
Type: "baidu_error",
Param: "",
Code: baiduResponse.ErrorCode,
},
StatusCode: resp.StatusCode,
}, nil
}
fullTextResponse := embeddingResponseBaidu2OpenAI(&baiduResponse)
jsonResponse, err := json.Marshal(fullTextResponse)
if err != nil {
return errorWrapper(err, "marshal_response_body_failed", http.StatusInternalServerError), nil
}
c.Writer.Header().Set("Content-Type", "application/json")
c.Writer.WriteHeader(resp.StatusCode)
_, err = c.Writer.Write(jsonResponse)
return nil, &fullTextResponse.Usage
}

25
controller/relay-text.go
View File

@ -139,6 +139,8 @@ func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
fullRequestURL = "https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/chat/eb-instant"
case "BLOOMZ-7B":
fullRequestURL = "https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/chat/bloomz_7b1"
case "Embedding-V1":
fullRequestURL = "https://aip.baidubce.com/rpc/2.0/ai_custom/v1/wenxinworkshop/embeddings/embedding-v1"
}
apiKey := c.Request.Header.Get("Authorization")
apiKey = strings.TrimPrefix(apiKey, "Bearer ")
@ -212,12 +214,20 @@ func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
}
requestBody = bytes.NewBuffer(jsonStr)
case APITypeBaidu:
baiduRequest := requestOpenAI2Baidu(textRequest)
jsonStr, err := json.Marshal(baiduRequest)
var jsonData []byte
var err error
switch relayMode {
case RelayModeEmbeddings:
baiduEmbeddingRequest := embeddingRequestOpenAI2Baidu(textRequest)
jsonData, err = json.Marshal(baiduEmbeddingRequest)
default:
baiduRequest := requestOpenAI2Baidu(textRequest)
jsonData, err = json.Marshal(baiduRequest)
}
if err != nil {
return errorWrapper(err, "marshal_text_request_failed", http.StatusInternalServerError)
}
requestBody = bytes.NewBuffer(jsonStr)
requestBody = bytes.NewBuffer(jsonData)
case APITypePaLM:
palmRequest := requestOpenAI2PaLM(textRequest)
jsonStr, err := json.Marshal(palmRequest)
@ -386,7 +396,14 @@ func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
}
return nil
} else {
err, usage := baiduHandler(c, resp)
var err *OpenAIErrorWithStatusCode
var usage *Usage
switch relayMode {
case RelayModeEmbeddings:
err, usage = baiduEmbeddingHandler(c, resp)
default:
err, usage = baiduHandler(c, resp)
}
if err != nil {
return err
}

13
controller/relay.go
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@ -99,6 +99,19 @@ type OpenAITextResponse struct {
Usage `json:"usage"`
}
type OpenAIEmbeddingResponseItem struct {
Object string `json:"object"`
Index int `json:"index"`
Embedding []float64 `json:"embedding"`
}
type OpenAIEmbeddingResponse struct {
Object string `json:"object"`
Data []OpenAIEmbeddingResponseItem `json:"data"`
Model string `json:"model"`
Usage `json:"usage"`
}
type ImageResponse struct {
Created int `json:"created"`
Data []struct {