open-webui/backend/apps/ollama/main.py
2024-04-01 13:24:48 -07:00

1250 lines
36 KiB
Python

from fastapi import (
FastAPI,
Request,
Response,
HTTPException,
Depends,
status,
UploadFile,
File,
BackgroundTasks,
)
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import StreamingResponse
from fastapi.concurrency import run_in_threadpool
from pydantic import BaseModel, ConfigDict
import os
import copy
import random
import requests
import json
import uuid
import aiohttp
import asyncio
import logging
from urllib.parse import urlparse
from typing import Optional, List, Union
from apps.web.models.users import Users
from constants import ERROR_MESSAGES
from utils.utils import decode_token, get_current_user, get_admin_user
from config import (
SRC_LOG_LEVELS,
OLLAMA_BASE_URLS,
MODEL_FILTER_ENABLED,
MODEL_FILTER_LIST,
UPLOAD_DIR,
)
from utils.misc import calculate_sha256
log = logging.getLogger(__name__)
log.setLevel(SRC_LOG_LEVELS["OLLAMA"])
app = FastAPI()
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
app.state.MODEL_FILTER_ENABLED = MODEL_FILTER_ENABLED
app.state.MODEL_FILTER_LIST = MODEL_FILTER_LIST
app.state.OLLAMA_BASE_URLS = OLLAMA_BASE_URLS
app.state.MODELS = {}
REQUEST_POOL = []
# TODO: Implement a more intelligent load balancing mechanism for distributing requests among multiple backend instances.
# Current implementation uses a simple round-robin approach (random.choice). Consider incorporating algorithms like weighted round-robin,
# least connections, or least response time for better resource utilization and performance optimization.
@app.middleware("http")
async def check_url(request: Request, call_next):
if len(app.state.MODELS) == 0:
await get_all_models()
else:
pass
response = await call_next(request)
return response
@app.get("/urls")
async def get_ollama_api_urls(user=Depends(get_admin_user)):
return {"OLLAMA_BASE_URLS": app.state.OLLAMA_BASE_URLS}
class UrlUpdateForm(BaseModel):
urls: List[str]
@app.post("/urls/update")
async def update_ollama_api_url(form_data: UrlUpdateForm, user=Depends(get_admin_user)):
app.state.OLLAMA_BASE_URLS = form_data.urls
log.info(f"app.state.OLLAMA_BASE_URLS: {app.state.OLLAMA_BASE_URLS}")
return {"OLLAMA_BASE_URLS": app.state.OLLAMA_BASE_URLS}
@app.get("/cancel/{request_id}")
async def cancel_ollama_request(request_id: str, user=Depends(get_current_user)):
if user:
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
return True
else:
raise HTTPException(status_code=401, detail=ERROR_MESSAGES.ACCESS_PROHIBITED)
async def fetch_url(url):
try:
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
return await response.json()
except Exception as e:
# Handle connection error here
log.error(f"Connection error: {e}")
return None
def merge_models_lists(model_lists):
merged_models = {}
for idx, model_list in enumerate(model_lists):
if model_list is not None:
for model in model_list:
digest = model["digest"]
if digest not in merged_models:
model["urls"] = [idx]
merged_models[digest] = model
else:
merged_models[digest]["urls"].append(idx)
return list(merged_models.values())
# user=Depends(get_current_user)
async def get_all_models():
log.info("get_all_models()")
tasks = [fetch_url(f"{url}/api/tags") for url in app.state.OLLAMA_BASE_URLS]
responses = await asyncio.gather(*tasks)
models = {
"models": merge_models_lists(
map(lambda response: response["models"] if response else None, responses)
)
}
app.state.MODELS = {model["model"]: model for model in models["models"]}
return models
@app.get("/api/tags")
@app.get("/api/tags/{url_idx}")
async def get_ollama_tags(
url_idx: Optional[int] = None, user=Depends(get_current_user)
):
if url_idx == None:
models = await get_all_models()
if app.state.MODEL_FILTER_ENABLED:
if user.role == "user":
models["models"] = list(
filter(
lambda model: model["name"] in app.state.MODEL_FILTER_LIST,
models["models"],
)
)
return models
return models
else:
url = app.state.OLLAMA_BASE_URLS[url_idx]
try:
r = requests.request(method="GET", url=f"{url}/api/tags")
r.raise_for_status()
return r.json()
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
@app.get("/api/version")
@app.get("/api/version/{url_idx}")
async def get_ollama_versions(url_idx: Optional[int] = None):
if url_idx == None:
# returns lowest version
tasks = [fetch_url(f"{url}/api/version") for url in app.state.OLLAMA_BASE_URLS]
responses = await asyncio.gather(*tasks)
responses = list(filter(lambda x: x is not None, responses))
if len(responses) > 0:
lowest_version = min(
responses, key=lambda x: tuple(map(int, x["version"].split(".")))
)
return {"version": lowest_version["version"]}
else:
raise HTTPException(
status_code=500,
detail=ERROR_MESSAGES.OLLAMA_NOT_FOUND,
)
else:
url = app.state.OLLAMA_BASE_URLS[url_idx]
try:
r = requests.request(method="GET", url=f"{url}/api/version")
r.raise_for_status()
return r.json()
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class ModelNameForm(BaseModel):
name: str
@app.post("/api/pull")
@app.post("/api/pull/{url_idx}")
async def pull_model(
form_data: ModelNameForm, url_idx: int = 0, user=Depends(get_admin_user)
):
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
r = None
def get_request():
nonlocal url
nonlocal r
request_id = str(uuid.uuid4())
try:
REQUEST_POOL.append(request_id)
def stream_content():
try:
yield json.dumps({"id": request_id, "done": False}) + "\n"
for chunk in r.iter_content(chunk_size=8192):
if request_id in REQUEST_POOL:
yield chunk
else:
log.warning("User: canceled request")
break
finally:
if hasattr(r, "close"):
r.close()
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
r = requests.request(
method="POST",
url=f"{url}/api/pull",
data=form_data.model_dump_json(exclude_none=True).encode(),
stream=True,
)
r.raise_for_status()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class PushModelForm(BaseModel):
name: str
insecure: Optional[bool] = None
stream: Optional[bool] = None
@app.delete("/api/push")
@app.delete("/api/push/{url_idx}")
async def push_model(
form_data: PushModelForm,
url_idx: Optional[int] = None,
user=Depends(get_admin_user),
):
if url_idx == None:
if form_data.name in app.state.MODELS:
url_idx = app.state.MODELS[form_data.name]["urls"][0]
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.name),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.debug(f"url: {url}")
r = None
def get_request():
nonlocal url
nonlocal r
try:
def stream_content():
for chunk in r.iter_content(chunk_size=8192):
yield chunk
r = requests.request(
method="POST",
url=f"{url}/api/push",
data=form_data.model_dump_json(exclude_none=True).encode(),
)
r.raise_for_status()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class CreateModelForm(BaseModel):
name: str
modelfile: Optional[str] = None
stream: Optional[bool] = None
path: Optional[str] = None
@app.post("/api/create")
@app.post("/api/create/{url_idx}")
async def create_model(
form_data: CreateModelForm, url_idx: int = 0, user=Depends(get_admin_user)
):
log.debug(f"form_data: {form_data}")
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
r = None
def get_request():
nonlocal url
nonlocal r
try:
def stream_content():
for chunk in r.iter_content(chunk_size=8192):
yield chunk
r = requests.request(
method="POST",
url=f"{url}/api/create",
data=form_data.model_dump_json(exclude_none=True).encode(),
stream=True,
)
r.raise_for_status()
log.debug(f"r: {r}")
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class CopyModelForm(BaseModel):
source: str
destination: str
@app.post("/api/copy")
@app.post("/api/copy/{url_idx}")
async def copy_model(
form_data: CopyModelForm,
url_idx: Optional[int] = None,
user=Depends(get_admin_user),
):
if url_idx == None:
if form_data.source in app.state.MODELS:
url_idx = app.state.MODELS[form_data.source]["urls"][0]
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.source),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
try:
r = requests.request(
method="POST",
url=f"{url}/api/copy",
data=form_data.model_dump_json(exclude_none=True).encode(),
)
r.raise_for_status()
log.debug(f"r.text: {r.text}")
return True
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
@app.delete("/api/delete")
@app.delete("/api/delete/{url_idx}")
async def delete_model(
form_data: ModelNameForm,
url_idx: Optional[int] = None,
user=Depends(get_admin_user),
):
if url_idx == None:
if form_data.name in app.state.MODELS:
url_idx = app.state.MODELS[form_data.name]["urls"][0]
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.name),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
try:
r = requests.request(
method="DELETE",
url=f"{url}/api/delete",
data=form_data.model_dump_json(exclude_none=True).encode(),
)
r.raise_for_status()
log.debug(f"r.text: {r.text}")
return True
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
@app.post("/api/show")
async def show_model_info(form_data: ModelNameForm, user=Depends(get_current_user)):
if form_data.name not in app.state.MODELS:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.name),
)
url_idx = random.choice(app.state.MODELS[form_data.name]["urls"])
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
try:
r = requests.request(
method="POST",
url=f"{url}/api/show",
data=form_data.model_dump_json(exclude_none=True).encode(),
)
r.raise_for_status()
return r.json()
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class GenerateEmbeddingsForm(BaseModel):
model: str
prompt: str
options: Optional[dict] = None
keep_alive: Optional[Union[int, str]] = None
@app.post("/api/embeddings")
@app.post("/api/embeddings/{url_idx}")
async def generate_embeddings(
form_data: GenerateEmbeddingsForm,
url_idx: Optional[int] = None,
user=Depends(get_current_user),
):
if url_idx == None:
if form_data.model in app.state.MODELS:
url_idx = random.choice(app.state.MODELS[form_data.model]["urls"])
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.model),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
try:
r = requests.request(
method="POST",
url=f"{url}/api/embeddings",
data=form_data.model_dump_json(exclude_none=True).encode(),
)
r.raise_for_status()
return r.json()
except Exception as e:
log.exception(e)
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class GenerateCompletionForm(BaseModel):
model: str
prompt: str
images: Optional[List[str]] = None
format: Optional[str] = None
options: Optional[dict] = None
system: Optional[str] = None
template: Optional[str] = None
context: Optional[str] = None
stream: Optional[bool] = True
raw: Optional[bool] = None
keep_alive: Optional[Union[int, str]] = None
@app.post("/api/generate")
@app.post("/api/generate/{url_idx}")
async def generate_completion(
form_data: GenerateCompletionForm,
url_idx: Optional[int] = None,
user=Depends(get_current_user),
):
if url_idx == None:
if form_data.model in app.state.MODELS:
url_idx = random.choice(app.state.MODELS[form_data.model]["urls"])
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.model),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
r = None
def get_request():
nonlocal form_data
nonlocal r
request_id = str(uuid.uuid4())
try:
REQUEST_POOL.append(request_id)
def stream_content():
try:
if form_data.stream:
yield json.dumps({"id": request_id, "done": False}) + "\n"
for chunk in r.iter_content(chunk_size=8192):
if request_id in REQUEST_POOL:
yield chunk
else:
log.warning("User: canceled request")
break
finally:
if hasattr(r, "close"):
r.close()
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
r = requests.request(
method="POST",
url=f"{url}/api/generate",
data=form_data.model_dump_json(exclude_none=True).encode(),
stream=True,
)
r.raise_for_status()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class ChatMessage(BaseModel):
role: str
content: str
images: Optional[List[str]] = None
class GenerateChatCompletionForm(BaseModel):
model: str
messages: List[ChatMessage]
format: Optional[str] = None
options: Optional[dict] = None
template: Optional[str] = None
stream: Optional[bool] = None
keep_alive: Optional[Union[int, str]] = None
@app.post("/api/chat")
@app.post("/api/chat/{url_idx}")
async def generate_chat_completion(
form_data: GenerateChatCompletionForm,
url_idx: Optional[int] = None,
user=Depends(get_current_user),
):
if url_idx == None:
if form_data.model in app.state.MODELS:
url_idx = random.choice(app.state.MODELS[form_data.model]["urls"])
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.model),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
r = None
log.debug(
"form_data.model_dump_json(exclude_none=True).encode(): {0} ".format(
form_data.model_dump_json(exclude_none=True).encode()
)
)
def get_request():
nonlocal form_data
nonlocal r
request_id = str(uuid.uuid4())
try:
REQUEST_POOL.append(request_id)
def stream_content():
try:
if form_data.stream:
yield json.dumps({"id": request_id, "done": False}) + "\n"
for chunk in r.iter_content(chunk_size=8192):
if request_id in REQUEST_POOL:
yield chunk
else:
log.warning("User: canceled request")
break
finally:
if hasattr(r, "close"):
r.close()
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
r = requests.request(
method="POST",
url=f"{url}/api/chat",
data=form_data.model_dump_json(exclude_none=True).encode(),
stream=True,
)
r.raise_for_status()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
log.exception(e)
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
# TODO: we should update this part once Ollama supports other types
class OpenAIChatMessage(BaseModel):
role: str
content: str
model_config = ConfigDict(extra="allow")
class OpenAIChatCompletionForm(BaseModel):
model: str
messages: List[OpenAIChatMessage]
model_config = ConfigDict(extra="allow")
@app.post("/v1/chat/completions")
@app.post("/v1/chat/completions/{url_idx}")
async def generate_openai_chat_completion(
form_data: OpenAIChatCompletionForm,
url_idx: Optional[int] = None,
user=Depends(get_current_user),
):
if url_idx == None:
if form_data.model in app.state.MODELS:
url_idx = random.choice(app.state.MODELS[form_data.model]["urls"])
else:
raise HTTPException(
status_code=400,
detail=ERROR_MESSAGES.MODEL_NOT_FOUND(form_data.model),
)
url = app.state.OLLAMA_BASE_URLS[url_idx]
log.info(f"url: {url}")
r = None
def get_request():
nonlocal form_data
nonlocal r
request_id = str(uuid.uuid4())
try:
REQUEST_POOL.append(request_id)
def stream_content():
try:
if form_data.stream:
yield json.dumps(
{"request_id": request_id, "done": False}
) + "\n"
for chunk in r.iter_content(chunk_size=8192):
if request_id in REQUEST_POOL:
yield chunk
else:
log.warning("User: canceled request")
break
finally:
if hasattr(r, "close"):
r.close()
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
r = requests.request(
method="POST",
url=f"{url}/v1/chat/completions",
data=form_data.model_dump_json(exclude_none=True).encode(),
stream=True,
)
r.raise_for_status()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)
class UrlForm(BaseModel):
url: str
class UploadBlobForm(BaseModel):
filename: str
def parse_huggingface_url(hf_url):
try:
# Parse the URL
parsed_url = urlparse(hf_url)
# Get the path and split it into components
path_components = parsed_url.path.split("/")
# Extract the desired output
user_repo = "/".join(path_components[1:3])
model_file = path_components[-1]
return model_file
except ValueError:
return None
async def download_file_stream(
ollama_url, file_url, file_path, file_name, chunk_size=1024 * 1024
):
allowed_hosts = ["https://huggingface.co/", "https://github.com/"]
if not any(file_url.startswith(host) for host in allowed_hosts):
raise ValueError(
"Invalid file_url. Only URLs from allowed hosts are permitted."
)
done = False
if os.path.exists(file_path):
current_size = os.path.getsize(file_path)
else:
current_size = 0
headers = {"Range": f"bytes={current_size}-"} if current_size > 0 else {}
timeout = aiohttp.ClientTimeout(total=600) # Set the timeout
async with aiohttp.ClientSession(timeout=timeout) as session:
async with session.get(file_url, headers=headers) as response:
total_size = int(response.headers.get("content-length", 0)) + current_size
with open(file_path, "ab+") as file:
async for data in response.content.iter_chunked(chunk_size):
current_size += len(data)
file.write(data)
done = current_size == total_size
progress = round((current_size / total_size) * 100, 2)
yield f'data: {{"progress": {progress}, "completed": {current_size}, "total": {total_size}}}\n\n'
if done:
file.seek(0)
hashed = calculate_sha256(file)
file.seek(0)
url = f"{ollama_url}/api/blobs/sha256:{hashed}"
response = requests.post(url, data=file)
if response.ok:
res = {
"done": done,
"blob": f"sha256:{hashed}",
"name": file_name,
}
os.remove(file_path)
yield f"data: {json.dumps(res)}\n\n"
else:
raise "Ollama: Could not create blob, Please try again."
# def number_generator():
# for i in range(1, 101):
# yield f"data: {i}\n"
# url = "https://huggingface.co/TheBloke/stablelm-zephyr-3b-GGUF/resolve/main/stablelm-zephyr-3b.Q2_K.gguf"
@app.post("/models/download")
@app.post("/models/download/{url_idx}")
async def download_model(
form_data: UrlForm,
url_idx: Optional[int] = None,
):
if url_idx == None:
url_idx = 0
url = app.state.OLLAMA_BASE_URLS[url_idx]
file_name = parse_huggingface_url(form_data.url)
if file_name:
file_path = f"{UPLOAD_DIR}/{file_name}"
return StreamingResponse(
download_file_stream(url, form_data.url, file_path, file_name),
)
else:
return None
@app.post("/models/upload")
@app.post("/models/upload/{url_idx}")
def upload_model(file: UploadFile = File(...), url_idx: Optional[int] = None):
if url_idx == None:
url_idx = 0
ollama_url = app.state.OLLAMA_BASE_URLS[url_idx]
file_path = f"{UPLOAD_DIR}/{file.filename}"
# Save file in chunks
with open(file_path, "wb+") as f:
for chunk in file.file:
f.write(chunk)
def file_process_stream():
nonlocal ollama_url
total_size = os.path.getsize(file_path)
chunk_size = 1024 * 1024
try:
with open(file_path, "rb") as f:
total = 0
done = False
while not done:
chunk = f.read(chunk_size)
if not chunk:
done = True
continue
total += len(chunk)
progress = round((total / total_size) * 100, 2)
res = {
"progress": progress,
"total": total_size,
"completed": total,
}
yield f"data: {json.dumps(res)}\n\n"
if done:
f.seek(0)
hashed = calculate_sha256(f)
f.seek(0)
url = f"{ollama_url}/api/blobs/sha256:{hashed}"
response = requests.post(url, data=f)
if response.ok:
res = {
"done": done,
"blob": f"sha256:{hashed}",
"name": file.filename,
}
os.remove(file_path)
yield f"data: {json.dumps(res)}\n\n"
else:
raise Exception(
"Ollama: Could not create blob, Please try again."
)
except Exception as e:
res = {"error": str(e)}
yield f"data: {json.dumps(res)}\n\n"
return StreamingResponse(file_process_stream(), media_type="text/event-stream")
# async def upload_model(file: UploadFile = File(), url_idx: Optional[int] = None):
# if url_idx == None:
# url_idx = 0
# url = app.state.OLLAMA_BASE_URLS[url_idx]
# file_location = os.path.join(UPLOAD_DIR, file.filename)
# total_size = file.size
# async def file_upload_generator(file):
# print(file)
# try:
# async with aiofiles.open(file_location, "wb") as f:
# completed_size = 0
# while True:
# chunk = await file.read(1024*1024)
# if not chunk:
# break
# await f.write(chunk)
# completed_size += len(chunk)
# progress = (completed_size / total_size) * 100
# print(progress)
# yield f'data: {json.dumps({"status": "uploading", "percentage": progress, "total": total_size, "completed": completed_size, "done": False})}\n'
# except Exception as e:
# print(e)
# yield f"data: {json.dumps({'status': 'error', 'message': str(e)})}\n"
# finally:
# await file.close()
# print("done")
# yield f'data: {json.dumps({"status": "completed", "percentage": 100, "total": total_size, "completed": completed_size, "done": True})}\n'
# return StreamingResponse(
# file_upload_generator(copy.deepcopy(file)), media_type="text/event-stream"
# )
@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE"])
async def deprecated_proxy(path: str, request: Request, user=Depends(get_current_user)):
url = app.state.OLLAMA_BASE_URLS[0]
target_url = f"{url}/{path}"
body = await request.body()
headers = dict(request.headers)
if user.role in ["user", "admin"]:
if path in ["pull", "delete", "push", "copy", "create"]:
if user.role != "admin":
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
)
else:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail=ERROR_MESSAGES.ACCESS_PROHIBITED,
)
headers.pop("host", None)
headers.pop("authorization", None)
headers.pop("origin", None)
headers.pop("referer", None)
r = None
def get_request():
nonlocal r
request_id = str(uuid.uuid4())
try:
REQUEST_POOL.append(request_id)
def stream_content():
try:
if path == "generate":
data = json.loads(body.decode("utf-8"))
if not ("stream" in data and data["stream"] == False):
yield json.dumps({"id": request_id, "done": False}) + "\n"
elif path == "chat":
yield json.dumps({"id": request_id, "done": False}) + "\n"
for chunk in r.iter_content(chunk_size=8192):
if request_id in REQUEST_POOL:
yield chunk
else:
log.warning("User: canceled request")
break
finally:
if hasattr(r, "close"):
r.close()
if request_id in REQUEST_POOL:
REQUEST_POOL.remove(request_id)
r = requests.request(
method=request.method,
url=target_url,
data=body,
headers=headers,
stream=True,
)
r.raise_for_status()
# r.close()
return StreamingResponse(
stream_content(),
status_code=r.status_code,
headers=dict(r.headers),
)
except Exception as e:
raise e
try:
return await run_in_threadpool(get_request)
except Exception as e:
error_detail = "Open WebUI: Server Connection Error"
if r is not None:
try:
res = r.json()
if "error" in res:
error_detail = f"Ollama: {res['error']}"
except:
error_detail = f"Ollama: {e}"
raise HTTPException(
status_code=r.status_code if r else 500,
detail=error_detail,
)