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from fastapi import FastAPI, Depends
from fastapi.routing import APIRoute
from fastapi.responses import StreamingResponse
from fastapi.middleware.cors import CORSMiddleware
from starlette.middleware.sessions import SessionMiddleware
from apps.webui.routers import (
auths,
users,
chats,
documents,
tools,
models,
prompts,
configs,
memories,
utils,
files,
functions,
)
from apps.webui.models.functions import Functions
from apps.webui.utils import load_function_module_by_id
from utils.misc import stream_message_template
from config import (
WEBUI_BUILD_HASH,
SHOW_ADMIN_DETAILS,
ADMIN_EMAIL,
WEBUI_AUTH,
DEFAULT_MODELS,
DEFAULT_PROMPT_SUGGESTIONS,
DEFAULT_USER_ROLE,
ENABLE_SIGNUP,
USER_PERMISSIONS,
WEBHOOK_URL,
WEBUI_AUTH_TRUSTED_EMAIL_HEADER,
WEBUI_AUTH_TRUSTED_NAME_HEADER,
JWT_EXPIRES_IN,
WEBUI_BANNERS,
ENABLE_COMMUNITY_SHARING,
AppConfig,
)
import inspect
import uuid
import time
import json
from typing import Iterator, Generator
from pydantic import BaseModel
app = FastAPI()
origins = ["*"]
app.state.config = AppConfig()
app.state.config.ENABLE_SIGNUP = ENABLE_SIGNUP
app.state.config.JWT_EXPIRES_IN = JWT_EXPIRES_IN
app.state.AUTH_TRUSTED_EMAIL_HEADER = WEBUI_AUTH_TRUSTED_EMAIL_HEADER
app.state.AUTH_TRUSTED_NAME_HEADER = WEBUI_AUTH_TRUSTED_NAME_HEADER
app.state.config.SHOW_ADMIN_DETAILS = SHOW_ADMIN_DETAILS
app.state.config.ADMIN_EMAIL = ADMIN_EMAIL
app.state.config.DEFAULT_MODELS = DEFAULT_MODELS
app.state.config.DEFAULT_PROMPT_SUGGESTIONS = DEFAULT_PROMPT_SUGGESTIONS
app.state.config.DEFAULT_USER_ROLE = DEFAULT_USER_ROLE
app.state.config.USER_PERMISSIONS = USER_PERMISSIONS
app.state.config.WEBHOOK_URL = WEBHOOK_URL
app.state.config.BANNERS = WEBUI_BANNERS
app.state.config.ENABLE_COMMUNITY_SHARING = ENABLE_COMMUNITY_SHARING
app.state.MODELS = {}
app.state.TOOLS = {}
app.state.FUNCTIONS = {}
app.add_middleware(
CORSMiddleware,
allow_origins=origins,
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
app.include_router(configs.router, prefix="/configs", tags=["configs"])
app.include_router(auths.router, prefix="/auths", tags=["auths"])
app.include_router(users.router, prefix="/users", tags=["users"])
app.include_router(chats.router, prefix="/chats", tags=["chats"])
app.include_router(documents.router, prefix="/documents", tags=["documents"])
app.include_router(models.router, prefix="/models", tags=["models"])
app.include_router(prompts.router, prefix="/prompts", tags=["prompts"])
app.include_router(memories.router, prefix="/memories", tags=["memories"])
app.include_router(files.router, prefix="/files", tags=["files"])
app.include_router(tools.router, prefix="/tools", tags=["tools"])
app.include_router(functions.router, prefix="/functions", tags=["functions"])
app.include_router(utils.router, prefix="/utils", tags=["utils"])
@app.get("/")
async def get_status():
return {
"status": True,
"auth": WEBUI_AUTH,
"default_models": app.state.config.DEFAULT_MODELS,
"default_prompt_suggestions": app.state.config.DEFAULT_PROMPT_SUGGESTIONS,
}
async def get_pipe_models():
pipes = Functions.get_functions_by_type("pipe", active_only=True)
pipe_models = []
for pipe in pipes:
# Check if function is already loaded
if pipe.id not in app.state.FUNCTIONS:
function_module, function_type, frontmatter = load_function_module_by_id(
pipe.id
)
app.state.FUNCTIONS[pipe.id] = function_module
else:
function_module = app.state.FUNCTIONS[pipe.id]
if hasattr(function_module, "valves") and hasattr(function_module, "Valves"):
print(f"Getting valves for {pipe.id}")
valves = Functions.get_function_valves_by_id(pipe.id)
function_module.valves = function_module.Valves(
**(valves if valves else {})
)
# Check if function is a manifold
if hasattr(function_module, "type"):
if function_module.type == "manifold":
manifold_pipes = []
# Check if pipes is a function or a list
if callable(function_module.pipes):
manifold_pipes = function_module.pipes()
else:
manifold_pipes = function_module.pipes
for p in manifold_pipes:
manifold_pipe_id = f'{pipe.id}.{p["id"]}'
manifold_pipe_name = p["name"]
if hasattr(function_module, "name"):
manifold_pipe_name = (
f"{function_module.name}{manifold_pipe_name}"
)
pipe_models.append(
{
"id": manifold_pipe_id,
"name": manifold_pipe_name,
"object": "model",
"created": pipe.created_at,
"owned_by": "openai",
"pipe": {"type": pipe.type},
}
)
else:
pipe_models.append(
{
"id": pipe.id,
"name": pipe.name,
"object": "model",
"created": pipe.created_at,
"owned_by": "openai",
"pipe": {"type": "pipe"},
}
)
return pipe_models
async def generate_function_chat_completion(form_data, user):
async def job():
pipe_id = form_data["model"]
if "." in pipe_id:
pipe_id, sub_pipe_id = pipe_id.split(".", 1)
print(pipe_id)
# Check if function is already loaded
if pipe_id not in app.state.FUNCTIONS:
function_module, function_type, frontmatter = load_function_module_by_id(
pipe_id
)
app.state.FUNCTIONS[pipe_id] = function_module
else:
function_module = app.state.FUNCTIONS[pipe_id]
if hasattr(function_module, "valves") and hasattr(function_module, "Valves"):
valves = Functions.get_function_valves_by_id(pipe_id)
function_module.valves = function_module.Valves(
**(valves if valves else {})
)
pipe = function_module.pipe
# Get the signature of the function
sig = inspect.signature(pipe)
params = {"body": form_data}
if "__user__" in sig.parameters:
__user__ = {
"id": user.id,
"email": user.email,
"name": user.name,
"role": user.role,
}
try:
if hasattr(function_module, "UserValves"):
__user__["valves"] = function_module.UserValves(
**Functions.get_user_valves_by_id_and_user_id(pipe_id, user.id)
)
except Exception as e:
print(e)
params = {**params, "__user__": __user__}
if form_data["stream"]:
async def stream_content():
try:
if inspect.iscoroutinefunction(pipe):
res = await pipe(**params)
else:
res = pipe(**params)
# Directly return if the response is a StreamingResponse
if isinstance(res, StreamingResponse):
async for data in res.body_iterator:
yield data
return
if isinstance(res, dict):
yield f"data: {json.dumps(res)}\n\n"
return
except Exception as e:
print(f"Error: {e}")
yield f"data: {json.dumps({'error': {'detail':str(e)}})}\n\n"
return
if isinstance(res, str):
message = stream_message_template(form_data["model"], res)
yield f"data: {json.dumps(message)}\n\n"
if isinstance(res, Iterator):
for line in res:
if isinstance(line, BaseModel):
line = line.model_dump_json()
line = f"data: {line}"
if isinstance(line, dict):
line = f"data: {json.dumps(line)}"
try:
line = line.decode("utf-8")
except:
pass
if line.startswith("data:"):
yield f"{line}\n\n"
else:
line = stream_message_template(form_data["model"], line)
yield f"data: {json.dumps(line)}\n\n"
if isinstance(res, str) or isinstance(res, Generator):
finish_message = {
"id": f"{form_data['model']}-{str(uuid.uuid4())}",
"object": "chat.completion.chunk",
"created": int(time.time()),
"model": form_data["model"],
"choices": [
{
"index": 0,
"delta": {},
"logprobs": None,
"finish_reason": "stop",
}
],
}
yield f"data: {json.dumps(finish_message)}\n\n"
yield f"data: [DONE]"
return StreamingResponse(stream_content(), media_type="text/event-stream")
else:
try:
if inspect.iscoroutinefunction(pipe):
res = await pipe(**params)
else:
res = pipe(**params)
if isinstance(res, StreamingResponse):
return res
except Exception as e:
print(f"Error: {e}")
return {"error": {"detail": str(e)}}
if isinstance(res, dict):
return res
elif isinstance(res, BaseModel):
return res.model_dump()
else:
message = ""
if isinstance(res, str):
message = res
if isinstance(res, Generator):
for stream in res:
message = f"{message}{stream}"
return {
"id": f"{form_data['model']}-{str(uuid.uuid4())}",
"object": "chat.completion",
"created": int(time.time()),
"model": form_data["model"],
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": message,
},
"logprobs": None,
"finish_reason": "stop",
}
],
}
return await job()
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