feat: 算力引擎 Go 后端核心（new-api）

- 统一 OpenAI 兼容 /v1 中继 + 渠道/额度/令牌/流水 - 各领域包：relay 模型网关、model 数据层、controller 管理 API
2026-08-23 22:38:46 +08:00
commit 28e53d90fc
836 changed files with 165403 additions and 0 deletions
@@ -0,0 +1,74 @@
+package common_handler
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/constant"
+	"github.com/QuantumNous/new-api/logger"
+	"github.com/QuantumNous/new-api/relay/channel/xinference"
+	relaycommon "github.com/QuantumNous/new-api/relay/common"
+	"github.com/QuantumNous/new-api/relaykit/dto"
+	"github.com/QuantumNous/new-api/relaykit/types"
+	"github.com/QuantumNous/new-api/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+func RerankHandler(c *gin.Context, info *relaycommon.RelayInfo, resp *http.Response) (*dto.Usage, *types.NewAPIError) {
+	responseBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, types.NewOpenAIError(err, types.ErrorCodeReadResponseBodyFailed, http.StatusInternalServerError)
+	}
+	service.CloseResponseBodyGracefully(resp)
+	logger.LogDebug(c, "reranker response body: %s", responseBody)
+	var jinaResp dto.RerankResponse
+	if info.ChannelType == constant.ChannelTypeXinference {
+		var xinRerankResponse xinference.XinRerankResponse
+		err = common.Unmarshal(responseBody, &xinRerankResponse)
+		if err != nil {
+			return nil, types.NewOpenAIError(err, types.ErrorCodeBadResponseBody, http.StatusInternalServerError)
+		}
+		jinaRespResults := make([]dto.RerankResponseResult, len(xinRerankResponse.Results))
+		for i, result := range xinRerankResponse.Results {
+			respResult := dto.RerankResponseResult{
+				Index:          result.Index,
+				RelevanceScore: result.RelevanceScore,
+			}
+			if info.ReturnDocuments {
+				var document any
+				if result.Document != nil {
+					if doc, ok := result.Document.(string); ok {
+						if doc == "" {
+							document = info.Documents[result.Index]
+						} else {
+							document = doc
+						}
+					} else {
+						document = result.Document
+					}
+				}
+				respResult.Document = document
+			}
+			jinaRespResults[i] = respResult
+		}
+		jinaResp = dto.RerankResponse{
+			Results: jinaRespResults,
+			Usage: dto.Usage{
+				PromptTokens: info.GetEstimatePromptTokens(),
+				TotalTokens:  info.GetEstimatePromptTokens(),
+			},
+		}
+	} else {
+		err = common.Unmarshal(responseBody, &jinaResp)
+		if err != nil {
+			return nil, types.NewOpenAIError(err, types.ErrorCodeBadResponseBody, http.StatusInternalServerError)
+		}
+		jinaResp.Usage.PromptTokens = jinaResp.Usage.TotalTokens
+	}
+
+	c.Writer.Header().Set("Content-Type", "application/json")
+	c.JSON(http.StatusOK, jinaResp)
+	return &jinaResp.Usage, nil
+}