feat: support vertex ai #377

relay/constant/api_type.go

@@ -24,6 +24,7 @@ const (
 	APITypeJina
 	APITypeCloudflare
 	APITypeSiliconFlow
+	APITypeVertexAi
 
 	APITypeDummy // this one is only for count, do not add any channel after this
 )
@@ -69,6 +70,8 @@ func ChannelType2APIType(channelType int) (int, bool) {
 		apiType = APITypeCloudflare
 	case common.ChannelTypeSiliconFlow:
 		apiType = APITypeSiliconFlow
+	case common.ChannelTypeVertexAi:
+		apiType = APITypeVertexAi
 	}
 	if apiType == -1 {
 		return APITypeOpenAI, false