api_router.py

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project

from http import HTTPStatus

from fastapi import APIRouter, Depends, Request
from fastapi.responses import JSONResponse

from vllm.entrypoints.openai.engine.protocol import ErrorResponse
from vllm.entrypoints.openai.utils import validate_json_request
from vllm.entrypoints.pooling.embed.protocol import EmbeddingRequest
from vllm.entrypoints.pooling.embed.serving import ServingEmbedding
from vllm.entrypoints.utils import (
    create_error_response,
    load_aware_call,
    with_cancellation,
)

router = APIRouter()


def embedding(request: Request) -> ServingEmbedding | None:
    return request.app.state.serving_embedding


@router.post(
    "/v1/embeddings",
    dependencies=[Depends(validate_json_request)],
    responses={
        HTTPStatus.BAD_REQUEST.value: {"model": ErrorResponse},
        HTTPStatus.INTERNAL_SERVER_ERROR.value: {"model": ErrorResponse},
    },
)
@with_cancellation
@load_aware_call
async def create_embedding(
    request: EmbeddingRequest,
    raw_request: Request,
):
    handler = embedding(raw_request)
    if handler is None:
        error_response = create_error_response(
            message="The model does not support Embeddings API"
        )
        return JSONResponse(
            content=error_response.model_dump(),
            status_code=error_response.error.code,
        )
    return await handler(request, raw_request)