feat: add support for multi-key channels in RelayInfo and access token caching

relay/channel/vertex/service_account.go

@@ -36,7 +36,12 @@ var Cache = asynccache.NewAsyncCache(asynccache.Options{
 })
 
 func getAccessToken(a *Adaptor, info *relaycommon.RelayInfo) (string, error) {
-	cacheKey := fmt.Sprintf("access-token-%d", info.ChannelId)
+	var cacheKey string
+	if info.ChannelIsMultiKey {
+		cacheKey = fmt.Sprintf("access-token-%d-%d", info.ChannelId, info.ChannelMultiKeyIndex)
+	} else {
+		cacheKey = fmt.Sprintf("access-token-%d", info.ChannelId)
+	}
 	val, err := Cache.Get(cacheKey)
 	if err == nil {
 		return val.(string), nil

relay/common/relay_info.go

@@ -62,6 +62,8 @@ type ResponsesUsageInfo struct {
 type RelayInfo struct {
 	ChannelType          int
 	ChannelId            int
+	ChannelIsMultiKey    bool // 是否多密钥
+	ChannelMultiKeyIndex int  // 多密钥索引
 	TokenId              int
 	TokenKey             string
 	UserId               int
@@ -260,6 +262,9 @@ func GenRelayInfo(c *gin.Context) *RelayInfo {
 			IsFirstThinkingContent:  true,
 			SendLastThinkingContent: false,
 		},
+
+		ChannelIsMultiKey:    common.GetContextKeyBool(c, constant.ContextKeyChannelIsMultiKey),
+		ChannelMultiKeyIndex: common.GetContextKeyInt(c, constant.ContextKeyChannelMultiKeyIndex),
 	}
 	if strings.HasPrefix(c.Request.URL.Path, "/pg") {
 		info.IsPlayground = true