Streaming openai api support

[yunhaoli24]

Description

Use transformers TextIteratorStreamer to support streaming response for the OpenAI API. #762

Ref https://huggingface.co/docs/transformers/internal/generation_utils

Related Issue

None

[guyuexue]

choice_data = ChatCompletionResponseStreamChoice(
    index=0, delta=DeltaMessage(content=new_text), finish_reason=None
)
chunk = ChatCompletionResponse(
    model=model_id, choices=[choice_data], object="chat.completion.chunk"
)

代码有些问题,流式接口返回时这块会报错,
ChatCompletionResponseStreamChoice和ChatCompletionResponse不匹配,

要在openai_api_protocol.py建一个ChatCompletionResponseStream进行替换

class ChatCompletionResponseStream(BaseModel):
    id: str = Field(default_factory=lambda: f"chatcmpl-{shortuuid.random()}")
    object: str = "chat.completion"
    created: int = Field(default_factory=lambda: int(time.time()))
    model: str = "chinese-llama-alpaca"
    choices: List[ChatCompletionResponseStreamChoice]

[yunhaoli24]

choice_data = ChatCompletionResponseStreamChoice(
    index=0, delta=DeltaMessage(content=new_text), finish_reason=None
)
chunk = ChatCompletionResponse(
    model=model_id, choices=[choice_data], object="chat.completion.chunk"
)

代码有些问题,流式接口返回时这块会报错, ChatCompletionResponseStreamChoice和ChatCompletionResponse不匹配,

要在openai_api_protocol.py建一个ChatCompletionResponseStream进行替换

class ChatCompletionResponseStream(BaseModel):
    id: str = Field(default_factory=lambda: f"chatcmpl-{shortuuid.random()}")
    object: str = "chat.completion"
    created: int = Field(default_factory=lambda: int(time.time()))
    model: str = "chinese-llama-alpaca"
    choices: List[ChatCompletionResponseStreamChoice]

您好，我修改了一下代码，使得ChatCompletionResponse兼容两种格式的返回。现在运行不会报错了

class ChatCompletionResponse(BaseModel):
    id: str = Field(default_factory=lambda: f"chatcmpl-{shortuuid.random()}")
    object: str = "chat.completion"
    created: int = Field(default_factory=lambda: int(time.time()))
    model: str = "chinese-llama-alpaca"
    choices: List[
        Union[ChatCompletionResponseChoice, ChatCompletionResponseStreamChoice]
    ]

[airaria]

Thank you for your contribution to our project.
Since we are working on Chinese-LLaMA-Alpaca-2, and it is still under construction, we will be very glad to accept PR to Chinese-LLaMA-Alpaca-2. Would you please create a PR on Streaming openai api support to Chinese-LLaMA-Alpaca-2? Most of the code of openai_api_protocol.py and openai_api_server.py in the two projects are the same, except for some prompts and naming conventions. We really appreciate for your contribution.

As long as we have reviewed your code, we will merge your PRs in both repos.

[yunhaoli24]

Thank you for your contribution to our project. Since we are working on Chinese-LLaMA-Alpaca-2, and it is still under construction, we will be very glad to accept PR to Chinese-LLaMA-Alpaca-2. Would you please create a PR on Streaming openai api support to Chinese-LLaMA-Alpaca-2? Most of the code of openai_api_protocol.py and openai_api_server.py in the two projects are the same, except for some prompts and naming conventions. We really appreciate for your contribution.

As long as we have reviewed your code, we will merge your PRs in both repos.

ok