feat(gemini): 接入 Veo 官方异步生成协议

将 Gemini Veo 视频请求改为 predictLongRunning 提交与 Operation 轮询，支持任务恢复、首尾帧和参考图的官方 Base64 字段映射。完成后由网关携带 API Key 从受信任的 Gemini 文件域下载视频，再进入现有对象存储转存链路，避免暴露鉴权地址。验证：env -u AI_GATEWAY_TEST_DATABASE_URL go test ./... -count=1；go vet ./...；真实 Veo 3.1 任务生成并下载 1633544 字节视频。
2026-08-04 16:27:24 +08:00
parent 5c7d6ac9aa
commit 44d5cf2b9d
7 changed files with 951 additions and 1 deletions
@@ -18,6 +18,7 @@ const (
 	ProtocolOpenAIEmbeddings      = "openai_embeddings"
 	ProtocolOpenAIImages          = "openai_images"
 	ProtocolGeminiGenerateContent = "gemini_generate_content"
+	ProtocolGeminiVeo             = "gemini_veo_predict_long_running"
 	ProtocolVolcesContents        = "volces_contents_generations_v3"
 	ProtocolKlingV1Omni           = "kling_v1_omni_video"
 	ProtocolKlingV2Omni           = "kling_v2_omni_video"