API: Split into separate folder
Moving the API into its own directory helps compartmentalize it and allows for cleaning up the main file to just contain bootstrapping and the entry point. Signed-off-by: kingbri <bdashore3@proton.me>
This commit is contained in:
kingbri
Brian Dashore
parent
5a2de30066
commit
104a6121cb
13 changed files with 635 additions and 621 deletions
620
endpoints/OAI/app.py
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620
endpoints/OAI/app.py
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@ -0,0 +1,620 @@
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import pathlib
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from sse_starlette import EventSourceResponse
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import uvicorn
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from asyncio import CancelledError
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from uuid import uuid4
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from jinja2 import TemplateError
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from fastapi import FastAPI, Depends, HTTPException, Request
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from fastapi.concurrency import run_in_threadpool
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from fastapi.middleware.cors import CORSMiddleware
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from functools import partial
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from loguru import logger
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from common import config, model, gen_logging, sampling
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from common.auth import check_admin_key, check_api_key
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from common.generators import (
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call_with_semaphore,
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generate_with_semaphore,
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release_semaphore,
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)
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from common.logger import UVICORN_LOG_CONFIG
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from common.templating import (
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get_all_templates,
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get_prompt_from_template,
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get_template_from_file,
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)
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from common.utils import (
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get_generator_error,
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handle_request_error,
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unwrap,
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)
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from endpoints.OAI.types.completion import CompletionRequest
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from endpoints.OAI.types.chat_completion import ChatCompletionRequest
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from endpoints.OAI.types.lora import (
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LoraCard,
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LoraList,
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LoraLoadRequest,
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LoraLoadResponse,
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)
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from endpoints.OAI.types.model import (
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ModelCard,
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ModelLoadRequest,
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ModelLoadResponse,
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ModelCardParameters,
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)
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from endpoints.OAI.types.sampler_overrides import SamplerOverrideSwitchRequest
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from endpoints.OAI.types.template import TemplateList, TemplateSwitchRequest
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from endpoints.OAI.types.token import (
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TokenEncodeRequest,
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TokenEncodeResponse,
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TokenDecodeRequest,
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TokenDecodeResponse,
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)
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from endpoints.OAI.utils.completion import (
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create_completion_response,
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create_chat_completion_response,
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create_chat_completion_stream_chunk,
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)
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from endpoints.OAI.utils.model import get_model_list
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from endpoints.OAI.utils.lora import get_lora_list
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app = FastAPI(
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title="TabbyAPI",
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summary="An OAI compatible exllamav2 API that's both lightweight and fast",
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description=(
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"This docs page is not meant to send requests! Please use a service "
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"like Postman or a frontend UI."
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),
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)
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# ALlow CORS requests
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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async def check_model_container():
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"""FastAPI depends that checks if a model isn't loaded or currently loading."""
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if model.container is None or not (
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model.container.model_is_loading or model.container.model_loaded
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):
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error_message = handle_request_error(
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"No models are currently loaded.",
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exc_info=False,
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).error.message
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raise HTTPException(400, error_message)
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# Model list endpoint
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@app.get("/v1/models", dependencies=[Depends(check_api_key)])
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@app.get("/v1/model/list", dependencies=[Depends(check_api_key)])
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async def list_models():
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"""Lists all models in the model directory."""
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model_config = config.model_config()
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model_dir = unwrap(model_config.get("model_dir"), "models")
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model_path = pathlib.Path(model_dir)
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draft_model_dir = config.draft_model_config().get("draft_model_dir")
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models = get_model_list(model_path.resolve(), draft_model_dir)
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if unwrap(model_config.get("use_dummy_models"), False):
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models.data.insert(0, ModelCard(id="gpt-3.5-turbo"))
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return models
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# Currently loaded model endpoint
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@app.get(
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"/v1/model",
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dependencies=[Depends(check_api_key), Depends(check_model_container)],
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)
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async def get_current_model():
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"""Returns the currently loaded model."""
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model_params = model.container.get_model_parameters()
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draft_model_params = model_params.pop("draft", {})
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if draft_model_params:
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model_params["draft"] = ModelCard(
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id=unwrap(draft_model_params.get("name"), "unknown"),
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parameters=ModelCardParameters.model_validate(draft_model_params),
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)
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else:
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draft_model_params = None
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model_card = ModelCard(
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id=unwrap(model_params.pop("name", None), "unknown"),
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parameters=ModelCardParameters.model_validate(model_params),
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logging=gen_logging.PREFERENCES,
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)
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if draft_model_params:
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draft_card = ModelCard(
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id=unwrap(draft_model_params.pop("name", None), "unknown"),
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parameters=ModelCardParameters.model_validate(draft_model_params),
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)
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model_card.parameters.draft = draft_card
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return model_card
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@app.get("/v1/model/draft/list", dependencies=[Depends(check_api_key)])
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async def list_draft_models():
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"""Lists all draft models in the model directory."""
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draft_model_dir = unwrap(
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config.draft_model_config().get("draft_model_dir"), "models"
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)
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draft_model_path = pathlib.Path(draft_model_dir)
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models = get_model_list(draft_model_path.resolve())
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return models
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# Load model endpoint
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@app.post("/v1/model/load", dependencies=[Depends(check_admin_key)])
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async def load_model(request: Request, data: ModelLoadRequest):
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"""Loads a model into the model container."""
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# Verify request parameters
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if not data.name:
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raise HTTPException(400, "A model name was not provided.")
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model_path = pathlib.Path(unwrap(config.model_config().get("model_dir"), "models"))
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model_path = model_path / data.name
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load_data = data.model_dump()
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if data.draft:
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if not data.draft.draft_model_name:
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raise HTTPException(
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400, "draft_model_name was not found inside the draft object."
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)
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load_data["draft"]["draft_model_dir"] = unwrap(
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config.draft_model_config().get("draft_model_dir"), "models"
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)
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if not model_path.exists():
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raise HTTPException(400, "model_path does not exist. Check model_name?")
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async def generator():
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"""Request generation wrapper for the loading process."""
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load_status = model.load_model_gen(model_path, **load_data)
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try:
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async for module, modules, model_type in load_status:
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if await request.is_disconnected():
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release_semaphore()
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logger.error(
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"Model load cancelled by user. "
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"Please make sure to run unload to free up resources."
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)
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return
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if module != 0:
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response = ModelLoadResponse(
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model_type=model_type,
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module=module,
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modules=modules,
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status="processing",
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)
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yield response.model_dump_json()
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if module == modules:
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response = ModelLoadResponse(
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model_type=model_type,
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module=module,
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modules=modules,
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status="finished",
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)
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yield response.model_dump_json()
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except CancelledError:
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logger.error(
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"Model load cancelled by user. "
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"Please make sure to run unload to free up resources."
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)
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except Exception as exc:
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yield get_generator_error(str(exc))
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# Determine whether to use or skip the queue
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if data.skip_queue:
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logger.warning(
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"Model load request is skipping the completions queue. "
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"Unexpected results may occur."
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)
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generator_callback = generator
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else:
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generator_callback = partial(generate_with_semaphore, generator)
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return EventSourceResponse(generator_callback())
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# Unload model endpoint
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@app.post(
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"/v1/model/unload",
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dependencies=[Depends(check_admin_key), Depends(check_model_container)],
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)
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async def unload_model():
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"""Unloads the currently loaded model."""
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await model.unload_model()
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@app.get("/v1/templates", dependencies=[Depends(check_api_key)])
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@app.get("/v1/template/list", dependencies=[Depends(check_api_key)])
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async def get_templates():
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templates = get_all_templates()
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template_strings = list(map(lambda template: template.stem, templates))
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return TemplateList(data=template_strings)
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@app.post(
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"/v1/template/switch",
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dependencies=[Depends(check_admin_key), Depends(check_model_container)],
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)
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async def switch_template(data: TemplateSwitchRequest):
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"""Switch the currently loaded template"""
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if not data.name:
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raise HTTPException(400, "New template name not found.")
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try:
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template = get_template_from_file(data.name)
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model.container.prompt_template = template
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except FileNotFoundError as e:
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raise HTTPException(400, "Template does not exist. Check the name?") from e
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@app.post(
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"/v1/template/unload",
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dependencies=[Depends(check_admin_key), Depends(check_model_container)],
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)
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async def unload_template():
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"""Unloads the currently selected template"""
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model.container.prompt_template = None
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# Sampler override endpoints
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@app.get("/v1/sampling/overrides", dependencies=[Depends(check_api_key)])
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@app.get("/v1/sampling/override/list", dependencies=[Depends(check_api_key)])
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async def list_sampler_overrides():
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"""API wrapper to list all currently applied sampler overrides"""
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return sampling.overrides
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@app.post(
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"/v1/sampling/override/switch",
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dependencies=[Depends(check_admin_key)],
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)
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async def switch_sampler_override(data: SamplerOverrideSwitchRequest):
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"""Switch the currently loaded override preset"""
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if data.preset:
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try:
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sampling.overrides_from_file(data.preset)
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except FileNotFoundError as e:
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raise HTTPException(
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400, "Sampler override preset does not exist. Check the name?"
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) from e
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elif data.overrides:
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sampling.overrides_from_dict(data.overrides)
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else:
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raise HTTPException(
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400, "A sampler override preset or dictionary wasn't provided."
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)
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@app.post(
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"/v1/sampling/override/unload",
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dependencies=[Depends(check_admin_key)],
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)
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async def unload_sampler_override():
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"""Unloads the currently selected override preset"""
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sampling.overrides_from_dict({})
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# Lora list endpoint
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@app.get("/v1/loras", dependencies=[Depends(check_api_key)])
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@app.get("/v1/lora/list", dependencies=[Depends(check_api_key)])
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async def get_all_loras():
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"""Lists all LoRAs in the lora directory."""
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lora_path = pathlib.Path(unwrap(config.lora_config().get("lora_dir"), "loras"))
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loras = get_lora_list(lora_path.resolve())
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return loras
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# Currently loaded loras endpoint
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@app.get(
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"/v1/lora",
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dependencies=[Depends(check_api_key), Depends(check_model_container)],
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)
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async def get_active_loras():
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"""Returns the currently loaded loras."""
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active_loras = LoraList(
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data=list(
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map(
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lambda lora: LoraCard(
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id=pathlib.Path(lora.lora_path).parent.name,
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scaling=lora.lora_scaling * lora.lora_r / lora.lora_alpha,
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),
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model.container.active_loras,
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)
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)
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)
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return active_loras
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# Load lora endpoint
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@app.post(
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"/v1/lora/load",
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dependencies=[Depends(check_admin_key), Depends(check_model_container)],
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)
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async def load_lora(data: LoraLoadRequest):
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"""Loads a LoRA into the model container."""
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if not data.loras:
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raise HTTPException(400, "List of loras to load is not found.")
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lora_dir = pathlib.Path(unwrap(config.lora_config().get("lora_dir"), "loras"))
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if not lora_dir.exists():
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raise HTTPException(
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400,
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"A parent lora directory does not exist. Check your config.yml?",
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)
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# Clean-up existing loras if present
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def load_loras_internal():
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if len(model.container.active_loras) > 0:
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unload_loras()
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result = model.container.load_loras(lora_dir, **data.model_dump())
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return LoraLoadResponse(
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success=unwrap(result.get("success"), []),
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failure=unwrap(result.get("failure"), []),
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)
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internal_callback = partial(run_in_threadpool, load_loras_internal)
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# Determine whether to skip the queue
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if data.skip_queue:
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logger.warning(
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"Lora load request is skipping the completions queue. "
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"Unexpected results may occur."
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)
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return await internal_callback()
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else:
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return await call_with_semaphore(internal_callback)
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# Unload lora endpoint
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@app.post(
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"/v1/lora/unload",
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dependencies=[Depends(check_admin_key), Depends(check_model_container)],
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)
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async def unload_loras():
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"""Unloads the currently loaded loras."""
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model.container.unload(loras_only=True)
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# Encode tokens endpoint
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@app.post(
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"/v1/token/encode",
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dependencies=[Depends(check_api_key), Depends(check_model_container)],
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)
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async def encode_tokens(data: TokenEncodeRequest):
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"""Encodes a string into tokens."""
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raw_tokens = model.container.encode_tokens(data.text, **data.get_params())
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tokens = unwrap(raw_tokens, [])
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response = TokenEncodeResponse(tokens=tokens, length=len(tokens))
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return response
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# Decode tokens endpoint
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@app.post(
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"/v1/token/decode",
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dependencies=[Depends(check_api_key), Depends(check_model_container)],
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)
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async def decode_tokens(data: TokenDecodeRequest):
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"""Decodes tokens into a string."""
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message = model.container.decode_tokens(data.tokens, **data.get_params())
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response = TokenDecodeResponse(text=unwrap(message, ""))
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return response
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# Completions endpoint
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@app.post(
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"/v1/completions",
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dependencies=[Depends(check_api_key), Depends(check_model_container)],
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)
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async def generate_completion(request: Request, data: CompletionRequest):
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"""Generates a completion from a prompt."""
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model_path = model.container.get_model_path()
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if isinstance(data.prompt, list):
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data.prompt = "\n".join(data.prompt)
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disable_request_streaming = unwrap(
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config.developer_config().get("disable_request_streaming"), False
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)
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if data.stream and not disable_request_streaming:
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async def generator():
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try:
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new_generation = model.container.generate_gen(
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data.prompt, **data.to_gen_params()
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)
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for generation in new_generation:
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# Get out if the request gets disconnected
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if await request.is_disconnected():
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release_semaphore()
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logger.error("Completion generation cancelled by user.")
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return
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response = create_completion_response(generation, model_path.name)
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|
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yield response.model_dump_json()
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|
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# Yield a finish response on successful generation
|
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yield "[DONE]"
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except Exception:
|
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yield get_generator_error(
|
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"Completion aborted. Please check the server console."
|
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)
|
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|
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return EventSourceResponse(generate_with_semaphore(generator))
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|
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try:
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generation = await call_with_semaphore(
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partial(
|
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run_in_threadpool,
|
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model.container.generate,
|
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data.prompt,
|
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**data.to_gen_params(),
|
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)
|
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)
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response = create_completion_response(generation, model_path.name)
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return response
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except Exception as exc:
|
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error_message = handle_request_error(
|
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"Completion aborted. Maybe the model was unloaded? "
|
||||
"Please check the server console."
|
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).error.message
|
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# Server error if there's a generation exception
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raise HTTPException(503, error_message) from exc
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|
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# Chat completions endpoint
|
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@app.post(
|
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"/v1/chat/completions",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def generate_chat_completion(request: Request, data: ChatCompletionRequest):
|
||||
"""Generates a chat completion from a prompt."""
|
||||
|
||||
if model.container.prompt_template is None:
|
||||
raise HTTPException(
|
||||
422,
|
||||
"This endpoint is disabled because a prompt template is not set.",
|
||||
)
|
||||
|
||||
model_path = model.container.get_model_path()
|
||||
|
||||
if isinstance(data.messages, str):
|
||||
prompt = data.messages
|
||||
else:
|
||||
try:
|
||||
special_tokens_dict = model.container.get_special_tokens(
|
||||
unwrap(data.add_bos_token, True),
|
||||
unwrap(data.ban_eos_token, False),
|
||||
)
|
||||
|
||||
prompt = get_prompt_from_template(
|
||||
data.messages,
|
||||
model.container.prompt_template,
|
||||
data.add_generation_prompt,
|
||||
special_tokens_dict,
|
||||
)
|
||||
except KeyError as exc:
|
||||
raise HTTPException(
|
||||
400,
|
||||
"Could not find a Conversation from prompt template "
|
||||
f"'{model.container.prompt_template.name}'. "
|
||||
"Check your spelling?",
|
||||
) from exc
|
||||
except TemplateError as exc:
|
||||
raise HTTPException(
|
||||
400,
|
||||
f"TemplateError: {str(exc)}",
|
||||
) from exc
|
||||
|
||||
disable_request_streaming = unwrap(
|
||||
config.developer_config().get("disable_request_streaming"), False
|
||||
)
|
||||
|
||||
if data.stream and not disable_request_streaming:
|
||||
const_id = f"chatcmpl-{uuid4().hex}"
|
||||
|
||||
async def generator():
|
||||
"""Generator for the generation process."""
|
||||
try:
|
||||
new_generation = model.container.generate_gen(
|
||||
prompt, **data.to_gen_params()
|
||||
)
|
||||
for generation in new_generation:
|
||||
# Get out if the request gets disconnected
|
||||
if await request.is_disconnected():
|
||||
release_semaphore()
|
||||
logger.error("Chat completion generation cancelled by user.")
|
||||
return
|
||||
|
||||
response = create_chat_completion_stream_chunk(
|
||||
const_id, generation, model_path.name
|
||||
)
|
||||
|
||||
yield response.model_dump_json()
|
||||
|
||||
# Yield a finish response on successful generation
|
||||
finish_response = create_chat_completion_stream_chunk(
|
||||
const_id, finish_reason="stop"
|
||||
)
|
||||
|
||||
yield finish_response.model_dump_json()
|
||||
except Exception:
|
||||
yield get_generator_error(
|
||||
"Chat completion aborted. Please check the server console."
|
||||
)
|
||||
|
||||
return EventSourceResponse(generate_with_semaphore(generator))
|
||||
|
||||
try:
|
||||
generation = await call_with_semaphore(
|
||||
partial(
|
||||
run_in_threadpool,
|
||||
model.container.generate,
|
||||
prompt,
|
||||
**data.to_gen_params(),
|
||||
)
|
||||
)
|
||||
response = create_chat_completion_response(generation, model_path.name)
|
||||
|
||||
return response
|
||||
except Exception as exc:
|
||||
error_message = handle_request_error(
|
||||
"Chat completion aborted. Maybe the model was unloaded? "
|
||||
"Please check the server console."
|
||||
).error.message
|
||||
|
||||
# Server error if there's a generation exception
|
||||
raise HTTPException(503, error_message) from exc
|
||||
|
||||
|
||||
def start_api(host: str, port: int):
|
||||
"""Isolated function to start the API server"""
|
||||
|
||||
# TODO: Move OAI API to a separate folder
|
||||
logger.info(f"Developer documentation: http://{host}:{port}/redoc")
|
||||
logger.info(f"Completions: http://{host}:{port}/v1/completions")
|
||||
logger.info(f"Chat completions: http://{host}:{port}/v1/chat/completions")
|
||||
|
||||
uvicorn.run(
|
||||
app,
|
||||
host=host,
|
||||
port=port,
|
||||
log_config=UVICORN_LOG_CONFIG,
|
||||
)
|
||||
|
|
@ -3,7 +3,7 @@ from time import time
|
|||
from typing import Union, List, Optional, Dict
|
||||
from uuid import uuid4
|
||||
|
||||
from OAI.types.common import UsageStats, CommonCompletionRequest
|
||||
from endpoints.OAI.types.common import UsageStats, CommonCompletionRequest
|
||||
|
||||
|
||||
class ChatCompletionLogprob(BaseModel):
|
||||
|
|
@ -4,7 +4,7 @@ from time import time
|
|||
from typing import Dict, List, Optional, Union
|
||||
from uuid import uuid4
|
||||
|
||||
from OAI.types.common import CommonCompletionRequest, UsageStats
|
||||
from endpoints.OAI.types.common import CommonCompletionRequest, UsageStats
|
||||
|
||||
|
||||
class CompletionLogProbs(BaseModel):
|
||||
|
|
@ -2,7 +2,7 @@
|
|||
from typing import Optional
|
||||
|
||||
from common.utils import unwrap
|
||||
from OAI.types.chat_completion import (
|
||||
from endpoints.OAI.types.chat_completion import (
|
||||
ChatCompletionLogprobs,
|
||||
ChatCompletionLogprob,
|
||||
ChatCompletionMessage,
|
||||
|
|
@ -11,12 +11,12 @@ from OAI.types.chat_completion import (
|
|||
ChatCompletionResponse,
|
||||
ChatCompletionStreamChoice,
|
||||
)
|
||||
from OAI.types.completion import (
|
||||
from endpoints.OAI.types.completion import (
|
||||
CompletionResponse,
|
||||
CompletionRespChoice,
|
||||
CompletionLogProbs,
|
||||
)
|
||||
from OAI.types.common import UsageStats
|
||||
from endpoints.OAI.types.common import UsageStats
|
||||
|
||||
|
||||
def create_completion_response(generation: dict, model_name: Optional[str]):
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
import pathlib
|
||||
|
||||
from OAI.types.lora import LoraCard, LoraList
|
||||
from endpoints.OAI.types.lora import LoraCard, LoraList
|
||||
|
||||
|
||||
def get_lora_list(lora_path: pathlib.Path):
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
import pathlib
|
||||
from typing import Optional
|
||||
|
||||
from OAI.types.model import ModelCard, ModelList
|
||||
from endpoints.OAI.types.model import ModelCard, ModelList
|
||||
|
||||
|
||||
def get_model_list(model_path: pathlib.Path, draft_model_path: Optional[str] = None):
|
||||
622
main.py
622
main.py
|
|
@ -1,629 +1,23 @@
|
|||
"""The main tabbyAPI module. Contains the FastAPI server and endpoints."""
|
||||
|
||||
import asyncio
|
||||
import os
|
||||
import pathlib
|
||||
import signal
|
||||
import sys
|
||||
import time
|
||||
import threading
|
||||
from sse_starlette import EventSourceResponse
|
||||
import uvicorn
|
||||
from asyncio import CancelledError
|
||||
from typing import Optional
|
||||
from uuid import uuid4
|
||||
from jinja2 import TemplateError
|
||||
from fastapi import FastAPI, Depends, HTTPException, Request
|
||||
from fastapi.concurrency import run_in_threadpool
|
||||
from fastapi.middleware.cors import CORSMiddleware
|
||||
import time
|
||||
from functools import partial
|
||||
from loguru import logger
|
||||
from typing import Optional
|
||||
|
||||
from backends.exllamav2.utils import check_exllama_version
|
||||
from common import config, model, gen_logging, sampling
|
||||
from common import config, gen_logging, sampling, model
|
||||
from common.args import convert_args_to_dict, init_argparser
|
||||
from common.auth import check_admin_key, check_api_key, load_auth_keys
|
||||
from common.generators import (
|
||||
call_with_semaphore,
|
||||
generate_with_semaphore,
|
||||
release_semaphore,
|
||||
)
|
||||
from common.logger import UVICORN_LOG_CONFIG, setup_logger
|
||||
from common.templating import (
|
||||
get_all_templates,
|
||||
get_prompt_from_template,
|
||||
get_template_from_file,
|
||||
)
|
||||
from common.utils import (
|
||||
get_generator_error,
|
||||
handle_request_error,
|
||||
is_port_in_use,
|
||||
unwrap,
|
||||
)
|
||||
from OAI.types.completion import CompletionRequest
|
||||
from OAI.types.chat_completion import ChatCompletionRequest
|
||||
from OAI.types.lora import LoraCard, LoraList, LoraLoadRequest, LoraLoadResponse
|
||||
from OAI.types.model import (
|
||||
ModelCard,
|
||||
ModelLoadRequest,
|
||||
ModelLoadResponse,
|
||||
ModelCardParameters,
|
||||
)
|
||||
from OAI.types.sampler_overrides import SamplerOverrideSwitchRequest
|
||||
from OAI.types.template import TemplateList, TemplateSwitchRequest
|
||||
from OAI.types.token import (
|
||||
TokenEncodeRequest,
|
||||
TokenEncodeResponse,
|
||||
TokenDecodeRequest,
|
||||
TokenDecodeResponse,
|
||||
)
|
||||
from OAI.utils.completion import (
|
||||
create_completion_response,
|
||||
create_chat_completion_response,
|
||||
create_chat_completion_stream_chunk,
|
||||
)
|
||||
from OAI.utils.model import get_model_list
|
||||
from OAI.utils.lora import get_lora_list
|
||||
|
||||
app = FastAPI(
|
||||
title="TabbyAPI",
|
||||
summary="An OAI compatible exllamav2 API that's both lightweight and fast",
|
||||
description=(
|
||||
"This docs page is not meant to send requests! Please use a service "
|
||||
"like Postman or a frontend UI."
|
||||
),
|
||||
)
|
||||
|
||||
# ALlow CORS requests
|
||||
app.add_middleware(
|
||||
CORSMiddleware,
|
||||
allow_origins=["*"],
|
||||
allow_credentials=True,
|
||||
allow_methods=["*"],
|
||||
allow_headers=["*"],
|
||||
)
|
||||
|
||||
|
||||
async def check_model_container():
|
||||
"""FastAPI depends that checks if a model isn't loaded or currently loading."""
|
||||
|
||||
if model.container is None or not (
|
||||
model.container.model_is_loading or model.container.model_loaded
|
||||
):
|
||||
error_message = handle_request_error(
|
||||
"No models are currently loaded.",
|
||||
exc_info=False,
|
||||
).error.message
|
||||
|
||||
raise HTTPException(400, error_message)
|
||||
|
||||
|
||||
# Model list endpoint
|
||||
@app.get("/v1/models", dependencies=[Depends(check_api_key)])
|
||||
@app.get("/v1/model/list", dependencies=[Depends(check_api_key)])
|
||||
async def list_models():
|
||||
"""Lists all models in the model directory."""
|
||||
model_config = config.model_config()
|
||||
model_dir = unwrap(model_config.get("model_dir"), "models")
|
||||
model_path = pathlib.Path(model_dir)
|
||||
|
||||
draft_model_dir = config.draft_model_config().get("draft_model_dir")
|
||||
|
||||
models = get_model_list(model_path.resolve(), draft_model_dir)
|
||||
if unwrap(model_config.get("use_dummy_models"), False):
|
||||
models.data.insert(0, ModelCard(id="gpt-3.5-turbo"))
|
||||
|
||||
return models
|
||||
|
||||
|
||||
# Currently loaded model endpoint
|
||||
@app.get(
|
||||
"/v1/model",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def get_current_model():
|
||||
"""Returns the currently loaded model."""
|
||||
model_params = model.container.get_model_parameters()
|
||||
draft_model_params = model_params.pop("draft", {})
|
||||
|
||||
if draft_model_params:
|
||||
model_params["draft"] = ModelCard(
|
||||
id=unwrap(draft_model_params.get("name"), "unknown"),
|
||||
parameters=ModelCardParameters.model_validate(draft_model_params),
|
||||
)
|
||||
else:
|
||||
draft_model_params = None
|
||||
|
||||
model_card = ModelCard(
|
||||
id=unwrap(model_params.pop("name", None), "unknown"),
|
||||
parameters=ModelCardParameters.model_validate(model_params),
|
||||
logging=gen_logging.PREFERENCES,
|
||||
)
|
||||
|
||||
if draft_model_params:
|
||||
draft_card = ModelCard(
|
||||
id=unwrap(draft_model_params.pop("name", None), "unknown"),
|
||||
parameters=ModelCardParameters.model_validate(draft_model_params),
|
||||
)
|
||||
|
||||
model_card.parameters.draft = draft_card
|
||||
|
||||
return model_card
|
||||
|
||||
|
||||
@app.get("/v1/model/draft/list", dependencies=[Depends(check_api_key)])
|
||||
async def list_draft_models():
|
||||
"""Lists all draft models in the model directory."""
|
||||
draft_model_dir = unwrap(
|
||||
config.draft_model_config().get("draft_model_dir"), "models"
|
||||
)
|
||||
draft_model_path = pathlib.Path(draft_model_dir)
|
||||
|
||||
models = get_model_list(draft_model_path.resolve())
|
||||
|
||||
return models
|
||||
|
||||
|
||||
# Load model endpoint
|
||||
@app.post("/v1/model/load", dependencies=[Depends(check_admin_key)])
|
||||
async def load_model(request: Request, data: ModelLoadRequest):
|
||||
"""Loads a model into the model container."""
|
||||
|
||||
# Verify request parameters
|
||||
if not data.name:
|
||||
raise HTTPException(400, "A model name was not provided.")
|
||||
|
||||
model_path = pathlib.Path(unwrap(config.model_config().get("model_dir"), "models"))
|
||||
model_path = model_path / data.name
|
||||
|
||||
load_data = data.model_dump()
|
||||
|
||||
if data.draft:
|
||||
if not data.draft.draft_model_name:
|
||||
raise HTTPException(
|
||||
400, "draft_model_name was not found inside the draft object."
|
||||
)
|
||||
|
||||
load_data["draft"]["draft_model_dir"] = unwrap(
|
||||
config.draft_model_config().get("draft_model_dir"), "models"
|
||||
)
|
||||
|
||||
if not model_path.exists():
|
||||
raise HTTPException(400, "model_path does not exist. Check model_name?")
|
||||
|
||||
async def generator():
|
||||
"""Request generation wrapper for the loading process."""
|
||||
|
||||
load_status = model.load_model_gen(model_path, **load_data)
|
||||
try:
|
||||
async for module, modules, model_type in load_status:
|
||||
if await request.is_disconnected():
|
||||
release_semaphore()
|
||||
logger.error(
|
||||
"Model load cancelled by user. "
|
||||
"Please make sure to run unload to free up resources."
|
||||
)
|
||||
return
|
||||
|
||||
if module != 0:
|
||||
response = ModelLoadResponse(
|
||||
model_type=model_type,
|
||||
module=module,
|
||||
modules=modules,
|
||||
status="processing",
|
||||
)
|
||||
|
||||
yield response.model_dump_json()
|
||||
|
||||
if module == modules:
|
||||
response = ModelLoadResponse(
|
||||
model_type=model_type,
|
||||
module=module,
|
||||
modules=modules,
|
||||
status="finished",
|
||||
)
|
||||
|
||||
yield response.model_dump_json()
|
||||
except CancelledError:
|
||||
logger.error(
|
||||
"Model load cancelled by user. "
|
||||
"Please make sure to run unload to free up resources."
|
||||
)
|
||||
except Exception as exc:
|
||||
yield get_generator_error(str(exc))
|
||||
|
||||
# Determine whether to use or skip the queue
|
||||
if data.skip_queue:
|
||||
logger.warning(
|
||||
"Model load request is skipping the completions queue. "
|
||||
"Unexpected results may occur."
|
||||
)
|
||||
generator_callback = generator
|
||||
else:
|
||||
generator_callback = partial(generate_with_semaphore, generator)
|
||||
|
||||
return EventSourceResponse(generator_callback())
|
||||
|
||||
|
||||
# Unload model endpoint
|
||||
@app.post(
|
||||
"/v1/model/unload",
|
||||
dependencies=[Depends(check_admin_key), Depends(check_model_container)],
|
||||
)
|
||||
async def unload_model():
|
||||
"""Unloads the currently loaded model."""
|
||||
await model.unload_model()
|
||||
|
||||
|
||||
@app.get("/v1/templates", dependencies=[Depends(check_api_key)])
|
||||
@app.get("/v1/template/list", dependencies=[Depends(check_api_key)])
|
||||
async def get_templates():
|
||||
templates = get_all_templates()
|
||||
template_strings = list(map(lambda template: template.stem, templates))
|
||||
return TemplateList(data=template_strings)
|
||||
|
||||
|
||||
@app.post(
|
||||
"/v1/template/switch",
|
||||
dependencies=[Depends(check_admin_key), Depends(check_model_container)],
|
||||
)
|
||||
async def switch_template(data: TemplateSwitchRequest):
|
||||
"""Switch the currently loaded template"""
|
||||
if not data.name:
|
||||
raise HTTPException(400, "New template name not found.")
|
||||
|
||||
try:
|
||||
template = get_template_from_file(data.name)
|
||||
model.container.prompt_template = template
|
||||
except FileNotFoundError as e:
|
||||
raise HTTPException(400, "Template does not exist. Check the name?") from e
|
||||
|
||||
|
||||
@app.post(
|
||||
"/v1/template/unload",
|
||||
dependencies=[Depends(check_admin_key), Depends(check_model_container)],
|
||||
)
|
||||
async def unload_template():
|
||||
"""Unloads the currently selected template"""
|
||||
|
||||
model.container.prompt_template = None
|
||||
|
||||
|
||||
# Sampler override endpoints
|
||||
@app.get("/v1/sampling/overrides", dependencies=[Depends(check_api_key)])
|
||||
@app.get("/v1/sampling/override/list", dependencies=[Depends(check_api_key)])
|
||||
async def list_sampler_overrides():
|
||||
"""API wrapper to list all currently applied sampler overrides"""
|
||||
|
||||
return sampling.overrides
|
||||
|
||||
|
||||
@app.post(
|
||||
"/v1/sampling/override/switch",
|
||||
dependencies=[Depends(check_admin_key)],
|
||||
)
|
||||
async def switch_sampler_override(data: SamplerOverrideSwitchRequest):
|
||||
"""Switch the currently loaded override preset"""
|
||||
|
||||
if data.preset:
|
||||
try:
|
||||
sampling.overrides_from_file(data.preset)
|
||||
except FileNotFoundError as e:
|
||||
raise HTTPException(
|
||||
400, "Sampler override preset does not exist. Check the name?"
|
||||
) from e
|
||||
elif data.overrides:
|
||||
sampling.overrides_from_dict(data.overrides)
|
||||
else:
|
||||
raise HTTPException(
|
||||
400, "A sampler override preset or dictionary wasn't provided."
|
||||
)
|
||||
|
||||
|
||||
@app.post(
|
||||
"/v1/sampling/override/unload",
|
||||
dependencies=[Depends(check_admin_key)],
|
||||
)
|
||||
async def unload_sampler_override():
|
||||
"""Unloads the currently selected override preset"""
|
||||
|
||||
sampling.overrides_from_dict({})
|
||||
|
||||
|
||||
# Lora list endpoint
|
||||
@app.get("/v1/loras", dependencies=[Depends(check_api_key)])
|
||||
@app.get("/v1/lora/list", dependencies=[Depends(check_api_key)])
|
||||
async def get_all_loras():
|
||||
"""Lists all LoRAs in the lora directory."""
|
||||
lora_path = pathlib.Path(unwrap(config.lora_config().get("lora_dir"), "loras"))
|
||||
loras = get_lora_list(lora_path.resolve())
|
||||
|
||||
return loras
|
||||
|
||||
|
||||
# Currently loaded loras endpoint
|
||||
@app.get(
|
||||
"/v1/lora",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def get_active_loras():
|
||||
"""Returns the currently loaded loras."""
|
||||
active_loras = LoraList(
|
||||
data=list(
|
||||
map(
|
||||
lambda lora: LoraCard(
|
||||
id=pathlib.Path(lora.lora_path).parent.name,
|
||||
scaling=lora.lora_scaling * lora.lora_r / lora.lora_alpha,
|
||||
),
|
||||
model.container.active_loras,
|
||||
)
|
||||
)
|
||||
)
|
||||
|
||||
return active_loras
|
||||
|
||||
|
||||
# Load lora endpoint
|
||||
@app.post(
|
||||
"/v1/lora/load",
|
||||
dependencies=[Depends(check_admin_key), Depends(check_model_container)],
|
||||
)
|
||||
async def load_lora(data: LoraLoadRequest):
|
||||
"""Loads a LoRA into the model container."""
|
||||
if not data.loras:
|
||||
raise HTTPException(400, "List of loras to load is not found.")
|
||||
|
||||
lora_dir = pathlib.Path(unwrap(config.lora_config().get("lora_dir"), "loras"))
|
||||
if not lora_dir.exists():
|
||||
raise HTTPException(
|
||||
400,
|
||||
"A parent lora directory does not exist. Check your config.yml?",
|
||||
)
|
||||
|
||||
# Clean-up existing loras if present
|
||||
def load_loras_internal():
|
||||
if len(model.container.active_loras) > 0:
|
||||
unload_loras()
|
||||
|
||||
result = model.container.load_loras(lora_dir, **data.model_dump())
|
||||
return LoraLoadResponse(
|
||||
success=unwrap(result.get("success"), []),
|
||||
failure=unwrap(result.get("failure"), []),
|
||||
)
|
||||
|
||||
internal_callback = partial(run_in_threadpool, load_loras_internal)
|
||||
|
||||
# Determine whether to skip the queue
|
||||
if data.skip_queue:
|
||||
logger.warning(
|
||||
"Lora load request is skipping the completions queue. "
|
||||
"Unexpected results may occur."
|
||||
)
|
||||
return await internal_callback()
|
||||
else:
|
||||
return await call_with_semaphore(internal_callback)
|
||||
|
||||
|
||||
# Unload lora endpoint
|
||||
@app.post(
|
||||
"/v1/lora/unload",
|
||||
dependencies=[Depends(check_admin_key), Depends(check_model_container)],
|
||||
)
|
||||
async def unload_loras():
|
||||
"""Unloads the currently loaded loras."""
|
||||
model.container.unload(loras_only=True)
|
||||
|
||||
|
||||
# Encode tokens endpoint
|
||||
@app.post(
|
||||
"/v1/token/encode",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def encode_tokens(data: TokenEncodeRequest):
|
||||
"""Encodes a string into tokens."""
|
||||
raw_tokens = model.container.encode_tokens(data.text, **data.get_params())
|
||||
tokens = unwrap(raw_tokens, [])
|
||||
response = TokenEncodeResponse(tokens=tokens, length=len(tokens))
|
||||
|
||||
return response
|
||||
|
||||
|
||||
# Decode tokens endpoint
|
||||
@app.post(
|
||||
"/v1/token/decode",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def decode_tokens(data: TokenDecodeRequest):
|
||||
"""Decodes tokens into a string."""
|
||||
message = model.container.decode_tokens(data.tokens, **data.get_params())
|
||||
response = TokenDecodeResponse(text=unwrap(message, ""))
|
||||
|
||||
return response
|
||||
|
||||
|
||||
# Completions endpoint
|
||||
@app.post(
|
||||
"/v1/completions",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def generate_completion(request: Request, data: CompletionRequest):
|
||||
"""Generates a completion from a prompt."""
|
||||
model_path = model.container.get_model_path()
|
||||
|
||||
if isinstance(data.prompt, list):
|
||||
data.prompt = "\n".join(data.prompt)
|
||||
|
||||
disable_request_streaming = unwrap(
|
||||
config.developer_config().get("disable_request_streaming"), False
|
||||
)
|
||||
|
||||
if data.stream and not disable_request_streaming:
|
||||
|
||||
async def generator():
|
||||
try:
|
||||
new_generation = model.container.generate_gen(
|
||||
data.prompt, **data.to_gen_params()
|
||||
)
|
||||
for generation in new_generation:
|
||||
# Get out if the request gets disconnected
|
||||
if await request.is_disconnected():
|
||||
release_semaphore()
|
||||
logger.error("Completion generation cancelled by user.")
|
||||
return
|
||||
|
||||
response = create_completion_response(generation, model_path.name)
|
||||
|
||||
yield response.model_dump_json()
|
||||
|
||||
# Yield a finish response on successful generation
|
||||
yield "[DONE]"
|
||||
except Exception:
|
||||
yield get_generator_error(
|
||||
"Completion aborted. Please check the server console."
|
||||
)
|
||||
|
||||
return EventSourceResponse(generate_with_semaphore(generator))
|
||||
|
||||
try:
|
||||
generation = await call_with_semaphore(
|
||||
partial(
|
||||
run_in_threadpool,
|
||||
model.container.generate,
|
||||
data.prompt,
|
||||
**data.to_gen_params(),
|
||||
)
|
||||
)
|
||||
|
||||
response = create_completion_response(generation, model_path.name)
|
||||
return response
|
||||
except Exception as exc:
|
||||
error_message = handle_request_error(
|
||||
"Completion aborted. Maybe the model was unloaded? "
|
||||
"Please check the server console."
|
||||
).error.message
|
||||
|
||||
# Server error if there's a generation exception
|
||||
raise HTTPException(503, error_message) from exc
|
||||
|
||||
|
||||
# Chat completions endpoint
|
||||
@app.post(
|
||||
"/v1/chat/completions",
|
||||
dependencies=[Depends(check_api_key), Depends(check_model_container)],
|
||||
)
|
||||
async def generate_chat_completion(request: Request, data: ChatCompletionRequest):
|
||||
"""Generates a chat completion from a prompt."""
|
||||
|
||||
if model.container.prompt_template is None:
|
||||
raise HTTPException(
|
||||
422,
|
||||
"This endpoint is disabled because a prompt template is not set.",
|
||||
)
|
||||
|
||||
model_path = model.container.get_model_path()
|
||||
|
||||
if isinstance(data.messages, str):
|
||||
prompt = data.messages
|
||||
else:
|
||||
try:
|
||||
special_tokens_dict = model.container.get_special_tokens(
|
||||
unwrap(data.add_bos_token, True),
|
||||
unwrap(data.ban_eos_token, False),
|
||||
)
|
||||
|
||||
prompt = get_prompt_from_template(
|
||||
data.messages,
|
||||
model.container.prompt_template,
|
||||
data.add_generation_prompt,
|
||||
special_tokens_dict,
|
||||
)
|
||||
except KeyError as exc:
|
||||
raise HTTPException(
|
||||
400,
|
||||
"Could not find a Conversation from prompt template "
|
||||
f"'{model.container.prompt_template.name}'. "
|
||||
"Check your spelling?",
|
||||
) from exc
|
||||
except TemplateError as exc:
|
||||
raise HTTPException(
|
||||
400,
|
||||
f"TemplateError: {str(exc)}",
|
||||
) from exc
|
||||
|
||||
disable_request_streaming = unwrap(
|
||||
config.developer_config().get("disable_request_streaming"), False
|
||||
)
|
||||
|
||||
if data.stream and not disable_request_streaming:
|
||||
const_id = f"chatcmpl-{uuid4().hex}"
|
||||
|
||||
async def generator():
|
||||
"""Generator for the generation process."""
|
||||
try:
|
||||
new_generation = model.container.generate_gen(
|
||||
prompt, **data.to_gen_params()
|
||||
)
|
||||
for generation in new_generation:
|
||||
# Get out if the request gets disconnected
|
||||
if await request.is_disconnected():
|
||||
release_semaphore()
|
||||
logger.error("Chat completion generation cancelled by user.")
|
||||
return
|
||||
|
||||
response = create_chat_completion_stream_chunk(
|
||||
const_id, generation, model_path.name
|
||||
)
|
||||
|
||||
yield response.model_dump_json()
|
||||
|
||||
# Yield a finish response on successful generation
|
||||
finish_response = create_chat_completion_stream_chunk(
|
||||
const_id, finish_reason="stop"
|
||||
)
|
||||
|
||||
yield finish_response.model_dump_json()
|
||||
except Exception:
|
||||
yield get_generator_error(
|
||||
"Chat completion aborted. Please check the server console."
|
||||
)
|
||||
|
||||
return EventSourceResponse(generate_with_semaphore(generator))
|
||||
|
||||
try:
|
||||
generation = await call_with_semaphore(
|
||||
partial(
|
||||
run_in_threadpool,
|
||||
model.container.generate,
|
||||
prompt,
|
||||
**data.to_gen_params(),
|
||||
)
|
||||
)
|
||||
response = create_chat_completion_response(generation, model_path.name)
|
||||
|
||||
return response
|
||||
except Exception as exc:
|
||||
error_message = handle_request_error(
|
||||
"Chat completion aborted. Maybe the model was unloaded? "
|
||||
"Please check the server console."
|
||||
).error.message
|
||||
|
||||
# Server error if there's a generation exception
|
||||
raise HTTPException(503, error_message) from exc
|
||||
|
||||
|
||||
def start_api(host: str, port: int):
|
||||
"""Isolated function to start the API server"""
|
||||
|
||||
# TODO: Move OAI API to a separate folder
|
||||
logger.info(f"Developer documentation: http://{host}:{port}/redoc")
|
||||
logger.info(f"Completions: http://{host}:{port}/v1/completions")
|
||||
logger.info(f"Chat completions: http://{host}:{port}/v1/chat/completions")
|
||||
|
||||
uvicorn.run(
|
||||
app,
|
||||
host=host,
|
||||
port=port,
|
||||
log_config=UVICORN_LOG_CONFIG,
|
||||
)
|
||||
from common.auth import load_auth_keys
|
||||
from common.logger import setup_logger
|
||||
from common.utils import is_port_in_use, unwrap
|
||||
from endpoints.OAI.app import start_api
|
||||
|
||||
|
||||
def signal_handler(*_):
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue