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Co-Authored-By: Claude <noreply@anthropic.com>

relay/channel/ali/rerank.go

@@ -0,0 +1,74 @@
+package ali
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"one-api/common"
+	"one-api/dto"
+	relaycommon "one-api/relay/common"
+	"one-api/types"
+
+	"github.com/gin-gonic/gin"
+)
+
+func ConvertRerankRequest(request dto.RerankRequest) *AliRerankRequest {
+	returnDocuments := request.ReturnDocuments
+	if returnDocuments == nil {
+		t := true
+		returnDocuments = &t
+	}
+	return &AliRerankRequest{
+		Model: request.Model,
+		Input: AliRerankInput{
+			Query:     request.Query,
+			Documents: request.Documents,
+		},
+		Parameters: AliRerankParameters{
+			TopN:            &request.TopN,
+			ReturnDocuments: returnDocuments,
+		},
+	}
+}
+
+func RerankHandler(c *gin.Context, resp *http.Response, info *relaycommon.RelayInfo) (*types.NewAPIError, *dto.Usage) {
+	responseBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return types.NewError(err, types.ErrorCodeReadResponseBodyFailed), nil
+	}
+	common.CloseResponseBodyGracefully(resp)
+
+	var aliResponse AliRerankResponse
+	err = json.Unmarshal(responseBody, &aliResponse)
+	if err != nil {
+		return types.NewError(err, types.ErrorCodeBadResponseBody), nil
+	}
+
+	if aliResponse.Code != "" {
+		return types.WithOpenAIError(types.OpenAIError{
+			Message: aliResponse.Message,
+			Type:    aliResponse.Code,
+			Param:   aliResponse.RequestId,
+			Code:    aliResponse.Code,
+		}, resp.StatusCode), nil
+	}
+
+	usage := dto.Usage{
+		PromptTokens:     aliResponse.Usage.TotalTokens,
+		CompletionTokens: 0,
+		TotalTokens:      aliResponse.Usage.TotalTokens,
+	}
+	rerankResponse := dto.RerankResponse{
+		Results: aliResponse.Output.Results,
+		Usage:   usage,
+	}
+
+	jsonResponse, err := json.Marshal(rerankResponse)
+	if err != nil {
+		return types.NewError(err, types.ErrorCodeBadResponseBody), nil
+	}
+	c.Writer.Header().Set("Content-Type", "application/json")
+	c.Writer.WriteHeader(resp.StatusCode)
+	c.Writer.Write(jsonResponse)
+	return nil, &usage
+}