mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-26 09:40:20 +01:00
449 lines
15 KiB
Python
449 lines
15 KiB
Python
import asyncio
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import json
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import logging
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import os
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import traceback
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from collections import deque
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from threading import Thread
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import speech_recognition as sr
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import uvicorn
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from fastapi import Depends, FastAPI, Header, HTTPException
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.requests import Request
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from fastapi.responses import JSONResponse
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from pydub import AudioSegment
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from sse_starlette import EventSourceResponse
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import extensions.openai.completions as OAIcompletions
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import extensions.openai.embeddings as OAIembeddings
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import extensions.openai.images as OAIimages
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import extensions.openai.logits as OAIlogits
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import extensions.openai.models as OAImodels
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import extensions.openai.moderations as OAImoderations
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from extensions.openai.errors import ServiceUnavailableError
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from extensions.openai.tokens import token_count, token_decode, token_encode
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from extensions.openai.utils import _start_cloudflared, generate_in_executor, run_in_executor
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from modules import shared
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from modules.logging_colors import logger
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from modules.models import unload_model
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from modules.text_generation import stop_everything_event
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import functools
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from .typing import (
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ChatCompletionRequest,
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ChatCompletionResponse,
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ChatPromptResponse,
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CompletionRequest,
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CompletionResponse,
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DecodeRequest,
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DecodeResponse,
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TranscriptionsRequest,
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TranscriptionsResponse,
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EmbeddingsRequest,
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EmbeddingsResponse,
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EncodeRequest,
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EncodeResponse,
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LoadLorasRequest,
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LoadModelRequest,
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LogitsRequest,
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LogitsResponse,
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LoraListResponse,
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ModelInfoResponse,
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ModelListResponse,
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TokenCountResponse,
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to_dict
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)
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from io import BytesIO
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params = {
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'embedding_device': 'cpu',
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'embedding_model': 'sentence-transformers/all-mpnet-base-v2',
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'sd_webui_url': '',
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'debug': 0
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}
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# Allow some actions to run at the same time.
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text_generation_semaphore = asyncio.Semaphore(1) # Use same lock for streaming and generations.
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embedding_semaphore = asyncio.Semaphore(1)
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stt_semaphore = asyncio.Semaphore(1)
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io_semaphore = asyncio.Semaphore(1)
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small_tasks_semaphore = asyncio.Semaphore(5)
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def verify_api_key(authorization: str = Header(None)) -> None:
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expected_api_key = shared.args.api_key
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if expected_api_key and (authorization is None or authorization != f"Bearer {expected_api_key}"):
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raise HTTPException(status_code=401, detail="Unauthorized")
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def verify_admin_key(authorization: str = Header(None)) -> None:
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expected_api_key = shared.args.admin_key
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if expected_api_key and (authorization is None or authorization != f"Bearer {expected_api_key}"):
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raise HTTPException(status_code=401, detail="Unauthorized")
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app = FastAPI()
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check_key = [Depends(verify_api_key)]
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check_admin_key = [Depends(verify_admin_key)]
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# Configure CORS settings to allow all origins, methods, and headers
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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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@app.options("/", dependencies=check_key)
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async def options_route():
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return JSONResponse(content="OK")
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@app.post('/v1/completions', response_model=CompletionResponse, dependencies=check_key)
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async def openai_completions(request: Request, request_data: CompletionRequest):
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path = request.url.path
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is_legacy = "/generate" in path
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if request_data.stream:
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async def generator():
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async with text_generation_semaphore:
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partial = functools.partial(OAIcompletions.stream_completions, to_dict(request_data), is_legacy=is_legacy)
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async for resp in generate_in_executor(partial):
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disconnected = await request.is_disconnected()
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if disconnected:
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break
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yield {"data": json.dumps(resp)}
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return EventSourceResponse(generator()) # SSE streaming
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else:
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async with text_generation_semaphore:
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partial = functools.partial(OAIcompletions.completions, to_dict(request_data), is_legacy=is_legacy)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post('/v1/chat/completions', response_model=ChatCompletionResponse, dependencies=check_key)
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async def openai_chat_completions(request: Request, request_data: ChatCompletionRequest):
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path = request.url.path
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is_legacy = "/generate" in path
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if request_data.stream:
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async def generator():
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async with text_generation_semaphore:
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partial = functools.partial(OAIcompletions.stream_chat_completions, to_dict(request_data), is_legacy=is_legacy)
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async for resp in generate_in_executor(partial):
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disconnected = await request.is_disconnected()
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if disconnected:
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break
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yield {"data": json.dumps(resp)}
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return EventSourceResponse(generator()) # SSE streaming
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else:
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async with text_generation_semaphore:
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partial = functools.partial(OAIcompletions.chat_completions, to_dict(request_data), is_legacy=is_legacy)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.get("/v1/models", dependencies=check_key)
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@app.get("/v1/models/{model}", dependencies=check_key)
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async def handle_models(request: Request):
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path = request.url.path
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is_list = request.url.path.split('?')[0].split('#')[0] == '/v1/models'
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if is_list:
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response = OAImodels.list_dummy_models()
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else:
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model_name = path[len('/v1/models/'):]
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response = OAImodels.model_info_dict(model_name)
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return JSONResponse(response)
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@app.get('/v1/billing/usage', dependencies=check_key)
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def handle_billing_usage():
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'''
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Ex. /v1/dashboard/billing/usage?start_date=2023-05-01&end_date=2023-05-31
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'''
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return JSONResponse(content={"total_usage": 0})
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@app.post('/v1/audio/transcriptions', response_model=TranscriptionsResponse, dependencies=check_key)
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async def handle_audio_transcription(request: Request, request_data: TranscriptionsRequest = Depends(TranscriptionsRequest.as_form)):
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r = sr.Recognizer()
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file = request_data.file
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audio_file = await file.read()
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audio_file = BytesIO(audio_file)
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audio_data = AudioSegment.from_file(audio_file)
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# Convert AudioSegment to raw data
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raw_data = audio_data.raw_data
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# Create AudioData object
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audio_data = sr.AudioData(raw_data, audio_data.frame_rate, audio_data.sample_width)
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whisper_language = request_data.language
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whisper_model = request_data.model # Use the model from the form data if it exists, otherwise default to tiny
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transcription = {"text": ""}
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try:
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async with stt_semaphore:
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partial = functools.partial(r.recognize_whisper, audio_data, language=whisper_language, model=whisper_model)
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transcription["text"] = await run_in_executor(partial)
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except sr.UnknownValueError:
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logger.warning("Whisper could not understand audio")
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transcription["text"] = "Whisper could not understand audio UnknownValueError"
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except sr.RequestError as e:
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logger.warning("Could not request results from Whisper", e)
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transcription["text"] = "Whisper could not understand audio RequestError"
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return JSONResponse(content=transcription)
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@app.post('/v1/images/generations', dependencies=check_key)
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async def handle_image_generation(request: Request):
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if not os.environ.get('SD_WEBUI_URL', params.get('sd_webui_url', '')):
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raise ServiceUnavailableError("Stable Diffusion not available. SD_WEBUI_URL not set.")
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body = await request.json()
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prompt = body['prompt']
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size = body.get('size', '1024x1024')
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response_format = body.get('response_format', 'url') # or b64_json
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n = body.get('n', 1) # ignore the batch limits of max 10
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partial = functools.partial(OAIimages.generations, prompt=prompt, size=size, response_format=response_format, n=n)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/embeddings", response_model=EmbeddingsResponse, dependencies=check_key)
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async def handle_embeddings(request: Request, request_data: EmbeddingsRequest):
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input = request_data.input
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if not input:
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raise HTTPException(status_code=400, detail="Missing required argument input")
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if type(input) is str:
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input = [input]
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async with embedding_semaphore:
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partial = functools.partial(OAIembeddings.embeddings, input, request_data.encoding_format)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/moderations", dependencies=check_key)
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async def handle_moderations(request: Request):
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body = await request.json()
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input = body["input"]
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if not input:
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raise HTTPException(status_code=400, detail="Missing required argument input")
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async with embedding_semaphore:
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partial = functools.partial(OAImoderations.moderations, input)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/internal/encode", response_model=EncodeResponse, dependencies=check_key)
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async def handle_token_encode(request_data: EncodeRequest):
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async with small_tasks_semaphore:
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partial = functools.partial(token_encode, request_data.text)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/internal/decode", response_model=DecodeResponse, dependencies=check_key)
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async def handle_token_decode(request_data: DecodeRequest):
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async with small_tasks_semaphore:
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partial = functools.partial(token_decode, request_data.tokens)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/internal/token-count", response_model=TokenCountResponse, dependencies=check_key)
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async def handle_token_count(request_data: EncodeRequest):
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async with small_tasks_semaphore:
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partial = functools.partial(token_count, request_data.text)
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post("/v1/internal/logits", response_model=LogitsResponse, dependencies=check_key)
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async def handle_logits(request_data: LogitsRequest):
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'''
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Given a prompt, returns the top 50 most likely logits as a dict.
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The keys are the tokens, and the values are the probabilities.
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'''
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async with small_tasks_semaphore:
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partial = functools.partial(OAIlogits._get_next_logits, to_dict(request_data))
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response = await run_in_executor(partial)
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return JSONResponse(response)
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@app.post('/v1/internal/chat-prompt', response_model=ChatPromptResponse, dependencies=check_key)
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async def handle_chat_prompt(request: Request, request_data: ChatCompletionRequest):
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path = request.url.path
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is_legacy = "/generate" in path
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async with small_tasks_semaphore:
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# Run in executor as there are calls to get_encoded_length
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# which might slow down at really long contexts.
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partial = functools.partial(OAIcompletions.chat_completions_common, to_dict(request_data), is_legacy=is_legacy, prompt_only=True)
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generator = await run_in_executor(partial)
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response = deque(generator, maxlen=1).pop()
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return JSONResponse(response)
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@app.post("/v1/internal/stop-generation", dependencies=check_key)
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async def handle_stop_generation(request: Request):
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stop_everything_event()
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return JSONResponse(content="OK")
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@app.get("/v1/internal/model/info", response_model=ModelInfoResponse, dependencies=check_key)
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async def handle_model_info():
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payload = OAImodels.get_current_model_info()
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return JSONResponse(content=payload)
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@app.get("/v1/internal/model/list", response_model=ModelListResponse, dependencies=check_admin_key)
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async def handle_list_models():
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payload = OAImodels.list_models()
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return JSONResponse(content=payload)
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@app.post("/v1/internal/model/load", dependencies=check_admin_key)
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async def handle_load_model(request_data: LoadModelRequest):
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'''
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This endpoint is experimental and may change in the future.
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The "args" parameter can be used to modify flags like "--load-in-4bit"
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or "--n-gpu-layers" before loading a model. Example:
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```
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"args": {
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"load_in_4bit": true,
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"n_gpu_layers": 12
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}
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```
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Note that those settings will remain after loading the model. So you
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may need to change them back to load a second model.
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The "settings" parameter is also a dict but with keys for the
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shared.settings object. It can be used to modify the default instruction
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template like this:
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```
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"settings": {
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"instruction_template": "Alpaca"
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}
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```
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'''
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try:
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async with io_semaphore:
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partial = functools.partial(OAImodels._load_model, to_dict(request_data))
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await run_in_executor(partial)
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return JSONResponse(content="OK")
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except:
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traceback.print_exc()
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raise HTTPException(status_code=400, detail="Failed to load the model.")
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@app.post("/v1/internal/model/unload", dependencies=check_admin_key)
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async def handle_unload_model():
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async with io_semaphore:
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await run_in_executor(unload_model)
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return JSONResponse(content="OK")
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@app.get("/v1/internal/lora/list", response_model=LoraListResponse, dependencies=check_admin_key)
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async def handle_list_loras():
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response = OAImodels.list_loras()
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return JSONResponse(content=response)
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@app.post("/v1/internal/lora/load", dependencies=check_admin_key)
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async def handle_load_loras(request_data: LoadLorasRequest):
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try:
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async with io_semaphore:
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partial = functools.partial(OAImodels.load_loras, request_data.lora_names)
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await run_in_executor(partial)
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return JSONResponse(content="OK")
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except:
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traceback.print_exc()
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raise HTTPException(status_code=400, detail="Failed to apply the LoRA(s).")
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@app.post("/v1/internal/lora/unload", dependencies=check_admin_key)
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async def handle_unload_loras():
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async with io_semaphore:
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await run_in_executor(OAImodels.unload_all_loras)
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return JSONResponse(content="OK")
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def run_server():
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server_addr = '0.0.0.0' if shared.args.listen else '127.0.0.1'
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port = int(os.environ.get('OPENEDAI_PORT', shared.args.api_port))
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ssl_certfile = os.environ.get('OPENEDAI_CERT_PATH', shared.args.ssl_certfile)
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ssl_keyfile = os.environ.get('OPENEDAI_KEY_PATH', shared.args.ssl_keyfile)
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if shared.args.public_api:
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def on_start(public_url: str):
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logger.info(f'OpenAI-compatible API URL:\n\n{public_url}\n')
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_start_cloudflared(port, shared.args.public_api_id, max_attempts=3, on_start=on_start)
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else:
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if ssl_keyfile and ssl_certfile:
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logger.info(f'OpenAI-compatible API URL:\n\nhttps://{server_addr}:{port}\n')
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else:
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logger.info(f'OpenAI-compatible API URL:\n\nhttp://{server_addr}:{port}\n')
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if shared.args.api_key:
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if not shared.args.admin_key:
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shared.args.admin_key = shared.args.api_key
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logger.info(f'OpenAI API key:\n\n{shared.args.api_key}\n')
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if shared.args.admin_key and shared.args.admin_key != shared.args.api_key:
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logger.info(f'OpenAI API admin key (for loading/unloading models):\n\n{shared.args.admin_key}\n')
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logging.getLogger("uvicorn.error").propagate = False
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uvicorn.run(app, host=server_addr, port=port, ssl_certfile=ssl_certfile, ssl_keyfile=ssl_keyfile)
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def setup():
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if shared.args.nowebui:
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run_server()
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else:
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Thread(target=run_server, daemon=True).start()
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