boos 4d093548de feat(proxy): wire Gemini native v1beta endpoints through the conductor ...

Implement the four Gemini native inbound endpoints so Gemini CLI / Google
GenAI SDKs can point their base URL at the gateway:

- GET  /v1beta/models — directory listing in Gemini shape, built from
  configured routes (like /v1/models); no upstream call, no billing.
- POST /v1beta/models/{model}:generateContent — non-streaming, routed
  through ProxyConductor with failover + usage_logs + billing.
- POST /v1beta/models/{model}:streamGenerateContent — SSE passthrough via
  open_stream_with_failover + sse_passthrough_response.
- POST /v1beta/models/{model}:countTokens — metadata call, routed for a
  channel but not billed.

Auth accepts the gateway key from ?key= or x-goog-api-key (Gemini
convention) and reuses the downstream-key authorization + limits.

Billing closes the loop: gemini_extract_usage reads usageMetadata
(promptTokenCount / candidatesTokenCount) for non-streaming, and
gemini_stream_usage_from_line feeds the shared StreamUsageAccumulator so
streamed usageMetadata is billed too.

Unit tests cover model:action parsing, usage extraction, the stream usage
parser, and query forwarding (key/alt dropped).

2026-06-22 08:39:38 +08:00

..

mod.rs

feat(proxy): wire Gemini native v1beta endpoints through the conductor

2026-06-22 08:39:38 +08:00