mirror of
https://github.com/open-webui/open-webui
synced 2024-11-27 22:43:17 +00:00
400 lines
12 KiB
Python
400 lines
12 KiB
Python
from contextlib import asynccontextmanager
|
|
from bs4 import BeautifulSoup
|
|
import json
|
|
import markdown
|
|
import time
|
|
import os
|
|
import sys
|
|
import logging
|
|
import aiohttp
|
|
import requests
|
|
|
|
from fastapi import FastAPI, Request, Depends, status
|
|
from fastapi.staticfiles import StaticFiles
|
|
from fastapi import HTTPException
|
|
from fastapi.middleware.wsgi import WSGIMiddleware
|
|
from fastapi.middleware.cors import CORSMiddleware
|
|
from starlette.exceptions import HTTPException as StarletteHTTPException
|
|
from starlette.middleware.base import BaseHTTPMiddleware
|
|
from starlette.responses import StreamingResponse, Response
|
|
|
|
from apps.ollama.main import app as ollama_app
|
|
from apps.openai.main import app as openai_app
|
|
|
|
from apps.litellm.main import (
|
|
app as litellm_app,
|
|
start_litellm_background,
|
|
shutdown_litellm_background,
|
|
)
|
|
|
|
|
|
from apps.audio.main import app as audio_app
|
|
from apps.images.main import app as images_app
|
|
from apps.rag.main import app as rag_app
|
|
from apps.web.main import app as webui_app
|
|
|
|
import asyncio
|
|
from pydantic import BaseModel
|
|
from typing import List
|
|
|
|
|
|
from utils.utils import get_admin_user
|
|
from apps.rag.utils import rag_messages
|
|
|
|
from config import (
|
|
CONFIG_DATA,
|
|
WEBUI_NAME,
|
|
WEBUI_URL,
|
|
WEBUI_AUTH,
|
|
ENV,
|
|
VERSION,
|
|
CHANGELOG,
|
|
FRONTEND_BUILD_DIR,
|
|
CACHE_DIR,
|
|
STATIC_DIR,
|
|
ENABLE_LITELLM,
|
|
ENABLE_MODEL_FILTER,
|
|
MODEL_FILTER_LIST,
|
|
GLOBAL_LOG_LEVEL,
|
|
SRC_LOG_LEVELS,
|
|
WEBHOOK_URL,
|
|
ENABLE_ADMIN_EXPORT,
|
|
RAG_WEB_SEARCH_ENABLED,
|
|
AppConfig,
|
|
)
|
|
from constants import ERROR_MESSAGES
|
|
|
|
logging.basicConfig(stream=sys.stdout, level=GLOBAL_LOG_LEVEL)
|
|
log = logging.getLogger(__name__)
|
|
log.setLevel(SRC_LOG_LEVELS["MAIN"])
|
|
|
|
|
|
class SPAStaticFiles(StaticFiles):
|
|
async def get_response(self, path: str, scope):
|
|
try:
|
|
return await super().get_response(path, scope)
|
|
except (HTTPException, StarletteHTTPException) as ex:
|
|
if ex.status_code == 404:
|
|
return await super().get_response("index.html", scope)
|
|
else:
|
|
raise ex
|
|
|
|
|
|
print(
|
|
rf"""
|
|
___ __ __ _ _ _ ___
|
|
/ _ \ _ __ ___ _ __ \ \ / /__| |__ | | | |_ _|
|
|
| | | | '_ \ / _ \ '_ \ \ \ /\ / / _ \ '_ \| | | || |
|
|
| |_| | |_) | __/ | | | \ V V / __/ |_) | |_| || |
|
|
\___/| .__/ \___|_| |_| \_/\_/ \___|_.__/ \___/|___|
|
|
|_|
|
|
|
|
|
|
v{VERSION} - building the best open-source AI user interface.
|
|
https://github.com/open-webui/open-webui
|
|
"""
|
|
)
|
|
|
|
|
|
@asynccontextmanager
|
|
async def lifespan(app: FastAPI):
|
|
if ENABLE_LITELLM:
|
|
asyncio.create_task(start_litellm_background())
|
|
yield
|
|
if ENABLE_LITELLM:
|
|
await shutdown_litellm_background()
|
|
|
|
|
|
app = FastAPI(
|
|
docs_url="/docs" if ENV == "dev" else None, redoc_url=None, lifespan=lifespan
|
|
)
|
|
|
|
app.state.config = AppConfig()
|
|
app.state.config.ENABLE_MODEL_FILTER = ENABLE_MODEL_FILTER
|
|
app.state.config.MODEL_FILTER_LIST = MODEL_FILTER_LIST
|
|
|
|
app.state.config.WEBHOOK_URL = WEBHOOK_URL
|
|
|
|
origins = ["*"]
|
|
|
|
|
|
class RAGMiddleware(BaseHTTPMiddleware):
|
|
async def dispatch(self, request: Request, call_next):
|
|
return_citations = False
|
|
|
|
if request.method == "POST" and (
|
|
"/api/chat" in request.url.path or "/chat/completions" in request.url.path
|
|
):
|
|
log.debug(f"request.url.path: {request.url.path}")
|
|
|
|
# Read the original request body
|
|
body = await request.body()
|
|
# Decode body to string
|
|
body_str = body.decode("utf-8")
|
|
# Parse string to JSON
|
|
data = json.loads(body_str) if body_str else {}
|
|
|
|
return_citations = data.get("citations", False)
|
|
if "citations" in data:
|
|
del data["citations"]
|
|
|
|
# Example: Add a new key-value pair or modify existing ones
|
|
# data["modified"] = True # Example modification
|
|
if "docs" in data:
|
|
data = {**data}
|
|
data["messages"], citations = rag_messages(
|
|
docs=data["docs"],
|
|
messages=data["messages"],
|
|
template=rag_app.state.config.RAG_TEMPLATE,
|
|
embedding_function=rag_app.state.EMBEDDING_FUNCTION,
|
|
k=rag_app.state.config.TOP_K,
|
|
reranking_function=rag_app.state.sentence_transformer_rf,
|
|
r=rag_app.state.config.RELEVANCE_THRESHOLD,
|
|
hybrid_search=rag_app.state.config.ENABLE_RAG_HYBRID_SEARCH,
|
|
)
|
|
del data["docs"]
|
|
|
|
log.debug(
|
|
f"data['messages']: {data['messages']}, citations: {citations}"
|
|
)
|
|
|
|
modified_body_bytes = json.dumps(data).encode("utf-8")
|
|
|
|
# Replace the request body with the modified one
|
|
request._body = modified_body_bytes
|
|
|
|
# Set custom header to ensure content-length matches new body length
|
|
request.headers.__dict__["_list"] = [
|
|
(b"content-length", str(len(modified_body_bytes)).encode("utf-8")),
|
|
*[
|
|
(k, v)
|
|
for k, v in request.headers.raw
|
|
if k.lower() != b"content-length"
|
|
],
|
|
]
|
|
|
|
response = await call_next(request)
|
|
|
|
if return_citations:
|
|
# Inject the citations into the response
|
|
if isinstance(response, StreamingResponse):
|
|
# If it's a streaming response, inject it as SSE event or NDJSON line
|
|
content_type = response.headers.get("Content-Type")
|
|
if "text/event-stream" in content_type:
|
|
return StreamingResponse(
|
|
self.openai_stream_wrapper(response.body_iterator, citations),
|
|
)
|
|
if "application/x-ndjson" in content_type:
|
|
return StreamingResponse(
|
|
self.ollama_stream_wrapper(response.body_iterator, citations),
|
|
)
|
|
|
|
return response
|
|
|
|
async def _receive(self, body: bytes):
|
|
return {"type": "http.request", "body": body, "more_body": False}
|
|
|
|
async def openai_stream_wrapper(self, original_generator, citations):
|
|
yield f"data: {json.dumps({'citations': citations})}\n\n"
|
|
async for data in original_generator:
|
|
yield data
|
|
|
|
async def ollama_stream_wrapper(self, original_generator, citations):
|
|
yield f"{json.dumps({'citations': citations})}\n"
|
|
async for data in original_generator:
|
|
yield data
|
|
|
|
|
|
app.add_middleware(RAGMiddleware)
|
|
|
|
|
|
app.add_middleware(
|
|
CORSMiddleware,
|
|
allow_origins=origins,
|
|
allow_credentials=True,
|
|
allow_methods=["*"],
|
|
allow_headers=["*"],
|
|
)
|
|
|
|
|
|
@app.middleware("http")
|
|
async def check_url(request: Request, call_next):
|
|
start_time = int(time.time())
|
|
response = await call_next(request)
|
|
process_time = int(time.time()) - start_time
|
|
response.headers["X-Process-Time"] = str(process_time)
|
|
|
|
return response
|
|
|
|
|
|
app.mount("/api/v1", webui_app)
|
|
app.mount("/litellm/api", litellm_app)
|
|
|
|
app.mount("/ollama", ollama_app)
|
|
app.mount("/openai/api", openai_app)
|
|
|
|
app.mount("/images/api/v1", images_app)
|
|
app.mount("/audio/api/v1", audio_app)
|
|
app.mount("/rag/api/v1", rag_app)
|
|
|
|
|
|
@app.get("/api/config")
|
|
async def get_app_config():
|
|
# Checking and Handling the Absence of 'ui' in CONFIG_DATA
|
|
|
|
default_locale = "en-US"
|
|
if "ui" in CONFIG_DATA:
|
|
default_locale = CONFIG_DATA["ui"].get("default_locale", "en-US")
|
|
|
|
# The Rest of the Function Now Uses the Variables Defined Above
|
|
return {
|
|
"status": True,
|
|
"name": WEBUI_NAME,
|
|
"version": VERSION,
|
|
"auth": WEBUI_AUTH,
|
|
"default_locale": default_locale,
|
|
"images": images_app.state.config.ENABLED,
|
|
"default_models": webui_app.state.config.DEFAULT_MODELS,
|
|
"default_prompt_suggestions": webui_app.state.config.DEFAULT_PROMPT_SUGGESTIONS,
|
|
"trusted_header_auth": bool(webui_app.state.AUTH_TRUSTED_EMAIL_HEADER),
|
|
"admin_export_enabled": ENABLE_ADMIN_EXPORT,
|
|
"websearch": RAG_WEB_SEARCH_ENABLED,
|
|
}
|
|
|
|
|
|
@app.get("/api/config/model/filter")
|
|
async def get_model_filter_config(user=Depends(get_admin_user)):
|
|
return {
|
|
"enabled": app.state.config.ENABLE_MODEL_FILTER,
|
|
"models": app.state.config.MODEL_FILTER_LIST,
|
|
}
|
|
|
|
|
|
class ModelFilterConfigForm(BaseModel):
|
|
enabled: bool
|
|
models: List[str]
|
|
|
|
|
|
@app.post("/api/config/model/filter")
|
|
async def update_model_filter_config(
|
|
form_data: ModelFilterConfigForm, user=Depends(get_admin_user)
|
|
):
|
|
app.state.config.ENABLE_MODEL_FILTER, form_data.enabled
|
|
app.state.config.MODEL_FILTER_LIST, form_data.models
|
|
|
|
ollama_app.state.ENABLE_MODEL_FILTER = app.state.config.ENABLE_MODEL_FILTER
|
|
ollama_app.state.MODEL_FILTER_LIST = app.state.config.MODEL_FILTER_LIST
|
|
|
|
openai_app.state.ENABLE_MODEL_FILTER = app.state.config.ENABLE_MODEL_FILTER
|
|
openai_app.state.MODEL_FILTER_LIST = app.state.config.MODEL_FILTER_LIST
|
|
|
|
litellm_app.state.ENABLE_MODEL_FILTER = app.state.config.ENABLE_MODEL_FILTER
|
|
litellm_app.state.MODEL_FILTER_LIST = app.state.config.MODEL_FILTER_LIST
|
|
|
|
return {
|
|
"enabled": app.state.config.ENABLE_MODEL_FILTER,
|
|
"models": app.state.config.MODEL_FILTER_LIST,
|
|
}
|
|
|
|
|
|
@app.get("/api/webhook")
|
|
async def get_webhook_url(user=Depends(get_admin_user)):
|
|
return {
|
|
"url": app.state.config.WEBHOOK_URL,
|
|
}
|
|
|
|
|
|
class UrlForm(BaseModel):
|
|
url: str
|
|
|
|
|
|
@app.post("/api/webhook")
|
|
async def update_webhook_url(form_data: UrlForm, user=Depends(get_admin_user)):
|
|
app.state.config.WEBHOOK_URL = form_data.url
|
|
|
|
webui_app.state.WEBHOOK_URL = app.state.config.WEBHOOK_URL
|
|
|
|
return {
|
|
"url": app.state.config.WEBHOOK_URL,
|
|
}
|
|
|
|
|
|
@app.get("/api/version")
|
|
async def get_app_config():
|
|
return {
|
|
"version": VERSION,
|
|
}
|
|
|
|
|
|
@app.get("/api/changelog")
|
|
async def get_app_changelog():
|
|
return {key: CHANGELOG[key] for idx, key in enumerate(CHANGELOG) if idx < 5}
|
|
|
|
|
|
@app.get("/api/version/updates")
|
|
async def get_app_latest_release_version():
|
|
try:
|
|
async with aiohttp.ClientSession() as session:
|
|
async with session.get(
|
|
"https://api.github.com/repos/open-webui/open-webui/releases/latest"
|
|
) as response:
|
|
response.raise_for_status()
|
|
data = await response.json()
|
|
latest_version = data["tag_name"]
|
|
|
|
return {"current": VERSION, "latest": latest_version[1:]}
|
|
except aiohttp.ClientError as e:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
|
|
detail=ERROR_MESSAGES.RATE_LIMIT_EXCEEDED,
|
|
)
|
|
|
|
|
|
@app.get("/manifest.json")
|
|
async def get_manifest_json():
|
|
return {
|
|
"name": WEBUI_NAME,
|
|
"short_name": WEBUI_NAME,
|
|
"start_url": "/",
|
|
"display": "standalone",
|
|
"background_color": "#343541",
|
|
"theme_color": "#343541",
|
|
"orientation": "portrait-primary",
|
|
"icons": [{"src": "/static/logo.png", "type": "image/png", "sizes": "500x500"}],
|
|
}
|
|
|
|
|
|
@app.get("/opensearch.xml")
|
|
async def get_opensearch_xml():
|
|
xml_content = rf"""
|
|
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
|
|
<ShortName>{WEBUI_NAME}</ShortName>
|
|
<Description>Search {WEBUI_NAME}</Description>
|
|
<InputEncoding>UTF-8</InputEncoding>
|
|
<Image width="16" height="16" type="image/x-icon">{WEBUI_URL}/favicon.png</Image>
|
|
<Url type="text/html" method="get" template="{WEBUI_URL}/?q={"{searchTerms}"}"/>
|
|
<moz:SearchForm>{WEBUI_URL}</moz:SearchForm>
|
|
</OpenSearchDescription>
|
|
"""
|
|
return Response(content=xml_content, media_type="application/xml")
|
|
|
|
|
|
@app.get("/health")
|
|
async def healthcheck():
|
|
return {"status": True}
|
|
|
|
|
|
app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
|
|
app.mount("/cache", StaticFiles(directory=CACHE_DIR), name="cache")
|
|
|
|
if os.path.exists(FRONTEND_BUILD_DIR):
|
|
app.mount(
|
|
"/",
|
|
SPAStaticFiles(directory=FRONTEND_BUILD_DIR, html=True),
|
|
name="spa-static-files",
|
|
)
|
|
else:
|
|
log.warning(
|
|
f"Frontend build directory not found at '{FRONTEND_BUILD_DIR}'. Serving API only."
|
|
)
|