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chore: remove deprecated inference.chat_completion implementations (#3654)

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# What does this PR do?

remove unused chat_completion implementations

vllm features ported -
 - requires max_tokens be set, use config value
 - set tool_choice to none if no tools provided


## Test Plan

ci
This commit is contained in:
Matthew Farrellee 2025-10-03 07:55:34 -04:00 • committed by GitHub
parent 4dfbe46954
commit d266c59c2a
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18 changed files with 193 additions and 1410 deletions
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39
llama_stack/apis/inference/inference.py
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@ -1006,45 +1006,6 @@ class InferenceProvider(Protocol):
model_store: ModelStore | None = None
async def chat_completion(
self,
model_id: str,
messages: list[Message],
sampling_params: SamplingParams | None = None,
tools: list[ToolDefinition] | None = None,
tool_choice: ToolChoice | None = ToolChoice.auto,
tool_prompt_format: ToolPromptFormat | None = None,
response_format: ResponseFormat | None = None,
stream: bool | None = False,
logprobs: LogProbConfig | None = None,
tool_config: ToolConfig | None = None,
) -> ChatCompletionResponse | AsyncIterator[ChatCompletionResponseStreamChunk]:
"""Generate a chat completion for the given messages using the specified model.
:param model_id: The identifier of the model to use. The model must be registered with Llama Stack and available via the /models endpoint.
:param messages: List of messages in the conversation.
:param sampling_params: Parameters to control the sampling strategy.
:param tools: (Optional) List of tool definitions available to the model.
:param tool_choice: (Optional) Whether tool use is required or automatic. Defaults to ToolChoice.auto.
.. deprecated::
Use tool_config instead.
:param tool_prompt_format: (Optional) Instructs the model how to format tool calls. By default, Llama Stack will attempt to use a format that is best adapted to the model.
- `ToolPromptFormat.json`: The tool calls are formatted as a JSON object.
- `ToolPromptFormat.function_tag`: The tool calls are enclosed in a <function=function_name> tag.
- `ToolPromptFormat.python_list`: The tool calls are output as Python syntax -- a list of function calls.
.. deprecated::
Use tool_config instead.
:param response_format: (Optional) Grammar specification for guided (structured) decoding. There are two options:
- `ResponseFormat.json_schema`: The grammar is a JSON schema. Most providers support this format.
- `ResponseFormat.grammar`: The grammar is a BNF grammar. This format is more flexible, but not all providers support it.
:param stream: (Optional) If True, generate an SSE event stream of the response. Defaults to False.
:param logprobs: (Optional) If specified, log probabilities for each token position will be returned.
:param tool_config: (Optional) Configuration for tool use.
:returns: If stream=False, returns a ChatCompletionResponse with the full completion.
If stream=True, returns an SSE event stream of ChatCompletionResponseStreamChunk.
"""
...
@webmethod(route="/inference/rerank", method="POST", level=LLAMA_STACK_API_V1ALPHA)
async def rerank(
self,