9780f0fd9d
- 更新 middleware import 路径到 internal/server/middleware - 修复 api_key_auth_google.go 使用正确的 service 类型 - 更新 router.go 和 http.go 支持 Gemini v1beta 路由 - 在 routes/gateway.go 中添加 Gemini v1beta API 端点 - 在 routes/admin.go 中添加 Gemini OAuth 路由 - 更新 wire.go 添加 GeminiOAuthService cleanup - 重新生成 wire_gen.go
274 lines
8.2 KiB
Go
274 lines
8.2 KiB
Go
package handler
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/Wei-Shaw/sub2api/internal/model"
|
|
"github.com/Wei-Shaw/sub2api/internal/pkg/gemini"
|
|
"github.com/Wei-Shaw/sub2api/internal/pkg/googleapi"
|
|
"github.com/Wei-Shaw/sub2api/internal/server/middleware"
|
|
"github.com/Wei-Shaw/sub2api/internal/service"
|
|
|
|
"github.com/gin-gonic/gin"
|
|
)
|
|
|
|
// GeminiV1BetaListModels proxies:
|
|
// GET /v1beta/models
|
|
func (h *GatewayHandler) GeminiV1BetaListModels(c *gin.Context) {
|
|
apiKey, ok := middleware.GetApiKeyFromContext(c)
|
|
if !ok || apiKey == nil {
|
|
googleError(c, http.StatusUnauthorized, "Invalid API key")
|
|
return
|
|
}
|
|
if apiKey.Group == nil || apiKey.Group.Platform != model.PlatformGemini {
|
|
googleError(c, http.StatusBadRequest, "API key group platform is not gemini")
|
|
return
|
|
}
|
|
|
|
account, err := h.geminiCompatService.SelectAccountForAIStudioEndpoints(c.Request.Context(), apiKey.GroupID)
|
|
if err != nil {
|
|
googleError(c, http.StatusServiceUnavailable, "No available Gemini accounts: "+err.Error())
|
|
return
|
|
}
|
|
|
|
res, err := h.geminiCompatService.ForwardAIStudioGET(c.Request.Context(), account, "/v1beta/models")
|
|
if err != nil {
|
|
googleError(c, http.StatusBadGateway, err.Error())
|
|
return
|
|
}
|
|
if shouldFallbackGeminiModels(res) {
|
|
c.JSON(http.StatusOK, gemini.FallbackModelsList())
|
|
return
|
|
}
|
|
writeUpstreamResponse(c, res)
|
|
}
|
|
|
|
// GeminiV1BetaGetModel proxies:
|
|
// GET /v1beta/models/{model}
|
|
func (h *GatewayHandler) GeminiV1BetaGetModel(c *gin.Context) {
|
|
apiKey, ok := middleware.GetApiKeyFromContext(c)
|
|
if !ok || apiKey == nil {
|
|
googleError(c, http.StatusUnauthorized, "Invalid API key")
|
|
return
|
|
}
|
|
if apiKey.Group == nil || apiKey.Group.Platform != model.PlatformGemini {
|
|
googleError(c, http.StatusBadRequest, "API key group platform is not gemini")
|
|
return
|
|
}
|
|
|
|
modelName := strings.TrimSpace(c.Param("model"))
|
|
if modelName == "" {
|
|
googleError(c, http.StatusBadRequest, "Missing model in URL")
|
|
return
|
|
}
|
|
|
|
account, err := h.geminiCompatService.SelectAccountForAIStudioEndpoints(c.Request.Context(), apiKey.GroupID)
|
|
if err != nil {
|
|
googleError(c, http.StatusServiceUnavailable, "No available Gemini accounts: "+err.Error())
|
|
return
|
|
}
|
|
|
|
res, err := h.geminiCompatService.ForwardAIStudioGET(c.Request.Context(), account, "/v1beta/models/"+modelName)
|
|
if err != nil {
|
|
googleError(c, http.StatusBadGateway, err.Error())
|
|
return
|
|
}
|
|
if shouldFallbackGeminiModels(res) {
|
|
c.JSON(http.StatusOK, gemini.FallbackModel(modelName))
|
|
return
|
|
}
|
|
writeUpstreamResponse(c, res)
|
|
}
|
|
|
|
// GeminiV1BetaModels proxies Gemini native REST endpoints like:
|
|
// POST /v1beta/models/{model}:generateContent
|
|
// POST /v1beta/models/{model}:streamGenerateContent?alt=sse
|
|
func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
|
|
apiKey, ok := middleware.GetApiKeyFromContext(c)
|
|
if !ok || apiKey == nil {
|
|
googleError(c, http.StatusUnauthorized, "Invalid API key")
|
|
return
|
|
}
|
|
user, ok := middleware.GetUserFromContext(c)
|
|
if !ok || user == nil {
|
|
googleError(c, http.StatusInternalServerError, "User context not found")
|
|
return
|
|
}
|
|
|
|
if apiKey.Group == nil || apiKey.Group.Platform != model.PlatformGemini {
|
|
googleError(c, http.StatusBadRequest, "API key group platform is not gemini")
|
|
return
|
|
}
|
|
|
|
modelName, action, err := parseGeminiModelAction(strings.TrimPrefix(c.Param("modelAction"), "/"))
|
|
if err != nil {
|
|
googleError(c, http.StatusNotFound, err.Error())
|
|
return
|
|
}
|
|
|
|
stream := action == "streamGenerateContent"
|
|
|
|
body, err := io.ReadAll(c.Request.Body)
|
|
if err != nil {
|
|
googleError(c, http.StatusBadRequest, "Failed to read request body")
|
|
return
|
|
}
|
|
if len(body) == 0 {
|
|
googleError(c, http.StatusBadRequest, "Request body is empty")
|
|
return
|
|
}
|
|
|
|
// Get subscription (may be nil)
|
|
subscription, _ := middleware.GetSubscriptionFromContext(c)
|
|
|
|
// For Gemini native API, do not send Claude-style ping frames.
|
|
geminiConcurrency := NewConcurrencyHelper(h.concurrencyHelper.concurrencyService, SSEPingFormatNone)
|
|
|
|
// 0) wait queue check
|
|
maxWait := service.CalculateMaxWait(user.Concurrency)
|
|
canWait, err := geminiConcurrency.IncrementWaitCount(c.Request.Context(), user.ID, maxWait)
|
|
if err != nil {
|
|
log.Printf("Increment wait count failed: %v", err)
|
|
} else if !canWait {
|
|
googleError(c, http.StatusTooManyRequests, "Too many pending requests, please retry later")
|
|
return
|
|
}
|
|
defer geminiConcurrency.DecrementWaitCount(c.Request.Context(), user.ID)
|
|
|
|
// 1) user concurrency slot
|
|
streamStarted := false
|
|
userReleaseFunc, err := geminiConcurrency.AcquireUserSlotWithWait(c, user, stream, &streamStarted)
|
|
if err != nil {
|
|
googleError(c, http.StatusTooManyRequests, err.Error())
|
|
return
|
|
}
|
|
if userReleaseFunc != nil {
|
|
defer userReleaseFunc()
|
|
}
|
|
|
|
// 2) billing eligibility check (after wait)
|
|
if err := h.billingCacheService.CheckBillingEligibility(c.Request.Context(), user, apiKey, apiKey.Group, subscription); err != nil {
|
|
googleError(c, http.StatusForbidden, err.Error())
|
|
return
|
|
}
|
|
|
|
// 3) select account (sticky session based on request body)
|
|
sessionHash := h.gatewayService.GenerateSessionHash(body)
|
|
account, err := h.geminiCompatService.SelectAccountForModel(c.Request.Context(), apiKey.GroupID, sessionHash, modelName)
|
|
if err != nil {
|
|
googleError(c, http.StatusServiceUnavailable, "No available Gemini accounts: "+err.Error())
|
|
return
|
|
}
|
|
|
|
// 4) account concurrency slot
|
|
accountReleaseFunc, err := geminiConcurrency.AcquireAccountSlotWithWait(c, account, stream, &streamStarted)
|
|
if err != nil {
|
|
googleError(c, http.StatusTooManyRequests, err.Error())
|
|
return
|
|
}
|
|
if accountReleaseFunc != nil {
|
|
defer accountReleaseFunc()
|
|
}
|
|
|
|
// 5) forward (writes response to client)
|
|
result, err := h.geminiCompatService.ForwardNative(c.Request.Context(), c, account, modelName, action, stream, body)
|
|
if err != nil {
|
|
// ForwardNative already wrote the response
|
|
log.Printf("Gemini native forward failed: %v", err)
|
|
return
|
|
}
|
|
|
|
// 6) record usage async
|
|
go func() {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
|
defer cancel()
|
|
if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
|
|
Result: result,
|
|
ApiKey: apiKey,
|
|
User: user,
|
|
Account: account,
|
|
Subscription: subscription,
|
|
}); err != nil {
|
|
log.Printf("Record usage failed: %v", err)
|
|
}
|
|
}()
|
|
}
|
|
|
|
func parseGeminiModelAction(rest string) (model string, action string, err error) {
|
|
rest = strings.TrimSpace(rest)
|
|
if rest == "" {
|
|
return "", "", &pathParseError{"missing path"}
|
|
}
|
|
|
|
// Standard: {model}:{action}
|
|
if i := strings.Index(rest, ":"); i > 0 && i < len(rest)-1 {
|
|
return rest[:i], rest[i+1:], nil
|
|
}
|
|
|
|
// Fallback: {model}/{action}
|
|
if i := strings.Index(rest, "/"); i > 0 && i < len(rest)-1 {
|
|
return rest[:i], rest[i+1:], nil
|
|
}
|
|
|
|
return "", "", &pathParseError{"invalid model action path"}
|
|
}
|
|
|
|
type pathParseError struct{ msg string }
|
|
|
|
func (e *pathParseError) Error() string { return e.msg }
|
|
|
|
func googleError(c *gin.Context, status int, message string) {
|
|
c.JSON(status, gin.H{
|
|
"error": gin.H{
|
|
"code": status,
|
|
"message": message,
|
|
"status": googleapi.HTTPStatusToGoogleStatus(status),
|
|
},
|
|
})
|
|
}
|
|
|
|
func writeUpstreamResponse(c *gin.Context, res *service.UpstreamHTTPResult) {
|
|
if res == nil {
|
|
googleError(c, http.StatusBadGateway, "Empty upstream response")
|
|
return
|
|
}
|
|
for k, vv := range res.Headers {
|
|
// Avoid overriding content-length and hop-by-hop headers.
|
|
if strings.EqualFold(k, "Content-Length") || strings.EqualFold(k, "Transfer-Encoding") || strings.EqualFold(k, "Connection") {
|
|
continue
|
|
}
|
|
for _, v := range vv {
|
|
c.Writer.Header().Add(k, v)
|
|
}
|
|
}
|
|
contentType := res.Headers.Get("Content-Type")
|
|
if contentType == "" {
|
|
contentType = "application/json"
|
|
}
|
|
c.Data(res.StatusCode, contentType, res.Body)
|
|
}
|
|
|
|
func shouldFallbackGeminiModels(res *service.UpstreamHTTPResult) bool {
|
|
if res == nil {
|
|
return true
|
|
}
|
|
if res.StatusCode != http.StatusUnauthorized && res.StatusCode != http.StatusForbidden {
|
|
return false
|
|
}
|
|
if strings.Contains(strings.ToLower(res.Headers.Get("Www-Authenticate")), "insufficient_scope") {
|
|
return true
|
|
}
|
|
if strings.Contains(strings.ToLower(string(res.Body)), "insufficient authentication scopes") {
|
|
return true
|
|
}
|
|
if strings.Contains(strings.ToLower(string(res.Body)), "access_token_scope_insufficient") {
|
|
return true
|
|
}
|
|
return false
|
|
}
|