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* fix(streaming): comply with OpenAI usage / stream_options spec (#8546) LocalAI emitted `"usage":{"prompt_tokens":0,...}` on every streamed chunk because `OpenAIResponse.Usage` was a value type without `omitempty`. The official OpenAI Node SDK and its consumers (continuedev/continue, Kilo Code, Roo Code, Zed, IntelliJ Continue) filter on a truthy `result.usage` to detect the trailing usage chunk; LocalAI's zero-but-non-null usage on every intermediate chunk made that filter swallow every content chunk and surface an empty chat response while the server log looked successful. Changes: - `core/schema/openai.go`: `Usage *OpenAIUsage \`json:"usage,omitempty"\`` so intermediate chunks no longer carry a `usage` key. Add `OpenAIRequest.StreamOptions` with `include_usage` to mirror OpenAI's request field. - `core/http/endpoints/openai/chat.go` and `completion.go`: keep using the `Usage` struct field as an in-process channel for the running cumulative, but strip it before JSON marshalling. When the request set `stream_options.include_usage: true`, emit a dedicated trailing chunk with `"choices": []` and the populated usage (matching the OpenAI spec and llama.cpp's server behavior). - `chat_emit.go`: new `streamUsageTrailerJSON` helper; drop the `usage` parameter from `buildNoActionFinalChunks` since chunks no longer carry usage. - Update `image.go`, `inpainting.go`, `edit.go` to wrap their Usage values with `&` for the new pointer field. - UI: send `stream_options:{include_usage:true}` from the React (`useChat.js`) and legacy (`static/chat.js`) chat clients so the token-count badge keeps populating now that the server is spec-compliant. Tests: - New `chat_stream_usage_test.go` pins the spec invariants: intermediate chunks have no `usage` key, the trailer JSON has `"choices":[]` and a populated `usage`, and `OpenAIRequest` parses `stream_options.include_usage`. - Update `chat_emit_test.go` to reflect that finals no longer embed usage. Verified against the live LocalAI instance: before the fix Continue's filter logic swallowed 16/16 token chunks; with the new shape it yields 4/5 and routes usage through the dedicated trailer chunk. Fixes #8546 Assisted-by: Claude:opus-4.7 [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * fix(streaming): silence errcheck on usage trailer Fprintf The new spec-compliant `stream_options.include_usage` trailer writes were flagged by errcheck since they're new code (golangci-lint runs new-from-merge-base on master); the surrounding `fmt.Fprintf` data: writes are grandfathered. Drop the return values explicitly to match the linter's contract without adding a nolint shim. Assisted-by: Claude:opus-4.7 [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io> --------- Signed-off-by: Ettore Di Giacinto <mudler@localai.io> Co-authored-by: Ettore Di Giacinto <mudler@localai.io> |
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