Chat Completions, Messages and Responses each get a streaming module with
the same three names, event_stream, decode and encode, built on a shared
SSE helper in base_llm/sse.rs that owns the [DONE] marker. Callers use the
module path instead of vendor-prefixed names. Encoding matches what the
Python proxy writes to clients: Messages frames carry an event line, the
OpenAI formats are bare data frames.
Responses gets one event type for SSE and WebSocket. ResponsesEventType
names every event on OpenAI's streaming-events reference, with unknown
names riding in Other, and is_terminal and is_failure follow Python's
iterator. The framer adds a bulk decode_all and an SseBlockCodec that
keeps each event's wire bytes. An event the stream ends inside is dropped,
as the SSE spec and the openai SDK's decoder do.
ChatCompletionChunk no longer requires id, created or object, since
compatible hosts omit them.
* refactor(framer): replace Framer trait with tokio-util codecs
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* refactor(framer): port SSE and AWS event stream framing to codecs
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(rust): drop clone on Copy capabilities in messages request test
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(rust): use field init shorthand in messages request test
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Yujong Lee <yujong@berri.ai>
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Keep the exact eventstream pins but move them to =0.61.4 so aws-runtime 1.9.4's eventstream requirement resolves, downgrade aws-sdk-s3 to 1.146.1, and echo the context ttl from S3Cache::get_ttl to match Python
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Mirror the Redis vertical slice for S3Cache: a litellm-cache-s3 crate built on aws-sdk-s3 with path-style custom endpoints, python-identical put_object metadata (cache-control, expires, content headers), expires-aware get_object, and no-op flush/unsupported test_connection. Wire it through python-bridge config projection, facade guards, test handle, and binding dispatch, plus an in-process S3 stub and parity tests.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
