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routes.py
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routes.py
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import json
import os
import shutil
from datetime import datetime
from http import HTTPStatus
from pathlib import Path
from typing import Dict, List, Optional, Union, cast
from anyio import open_file
from fastapi import APIRouter, Depends, HTTPException, Response
from jupyverse_api.app import App
from jupyverse_api.auth import Auth, User
from jupyverse_api.contents import Contents, Content, SaveContent
from starlette.requests import Request
from .fileid import FileIdManager
from .models import Checkpoint, CreateContent, RenameContent
class _Contents(Contents):
def __init__(self, app: App, auth: Auth):
super().__init__(app=app)
router = APIRouter()
@router.post(
"/api/contents/{path:path}/checkpoints",
status_code=201,
)
async def create_checkpoint(
path, user: User = Depends(auth.current_user(permissions={"contents": ["write"]}))
):
src_path = Path(path)
dst_path = Path(".ipynb_checkpoints") / f"{src_path.stem}-checkpoint{src_path.suffix}"
try:
dst_path.parent.mkdir(exist_ok=True)
shutil.copyfile(src_path, dst_path)
except Exception:
# FIXME: return error code?
return []
mtime = get_file_modification_time(dst_path)
return Checkpoint(**{"id": "checkpoint", "last_modified": mtime})
@router.post(
"/api/contents{path:path}",
status_code=201,
)
async def create_content(
path: Optional[str],
request: Request,
user: User = Depends(auth.current_user(permissions={"contents": ["write"]})),
):
create_content = CreateContent(**(await request.json()))
content_path = Path(create_content.path)
if create_content.type == "notebook":
available_path = get_available_path(content_path / "Untitled.ipynb")
async with await open_file(available_path, "w") as f:
await f.write(
json.dumps(
{"cells": [], "metadata": {}, "nbformat": 4, "nbformat_minor": 5}
)
)
src_path = available_path
dst_path = (
Path(".ipynb_checkpoints") / f"{src_path.stem}-checkpoint{src_path.suffix}"
)
try:
dst_path.parent.mkdir(exist_ok=True)
shutil.copyfile(src_path, dst_path)
except Exception:
# FIXME: return error code?
pass
elif create_content.type == "directory":
name = "Untitled Folder"
available_path = get_available_path(content_path / name, sep=" ")
available_path.mkdir(parents=True, exist_ok=True)
else:
assert create_content.ext is not None
available_path = get_available_path(
content_path / ("untitled" + create_content.ext)
)
open(available_path, "w").close()
return await self.read_content(available_path, False)
@router.get("/api/contents")
async def get_root_content(
content: int,
user: User = Depends(auth.current_user(permissions={"contents": ["read"]})),
):
return await self.read_content("", bool(content))
@router.get("/api/contents/{path:path}/checkpoints")
async def get_checkpoint(
path, user: User = Depends(auth.current_user(permissions={"contents": ["read"]}))
):
src_path = Path(path)
dst_path = Path(".ipynb_checkpoints") / f"{src_path.stem}-checkpoint{src_path.suffix}"
if not dst_path.exists():
return []
mtime = get_file_modification_time(dst_path)
return [Checkpoint(**{"id": "checkpoint", "last_modified": mtime})]
@router.get("/api/contents/{path:path}")
async def get_content(
path: str,
content: int = 0,
user: User = Depends(auth.current_user(permissions={"contents": ["read"]})),
):
return await self.read_content(path, bool(content))
@router.put("/api/contents/{path:path}")
async def save_content(
path,
request: Request,
response: Response,
user: User = Depends(auth.current_user(permissions={"contents": ["write"]})),
):
content = SaveContent(**(await request.json()))
try:
await self.write_content(content)
except Exception:
raise HTTPException(status_code=404, detail=f"Error saving {content.path}")
return await self.read_content(content.path, False)
@router.delete(
"/api/contents/{path:path}",
status_code=204,
)
async def delete_content(
path,
user: User = Depends(auth.current_user(permissions={"contents": ["write"]})),
):
p = Path(path)
if p.exists():
if p.is_dir():
shutil.rmtree(p)
else:
p.unlink()
return Response(status_code=HTTPStatus.NO_CONTENT.value)
@router.patch("/api/contents/{path:path}")
async def rename_content(
path,
request: Request,
user: User = Depends(auth.current_user(permissions={"contents": ["write"]})),
):
rename_content = RenameContent(**(await request.json()))
Path(path).rename(rename_content.path)
return await self.read_content(rename_content.path, False)
self.include_router(router)
async def read_content(
self, path: Union[str, Path], get_content: bool, as_json: bool = False
) -> Content:
if isinstance(path, str):
path = Path(path)
content: Optional[Union[str, Dict, List[Dict]]] = None
if get_content:
if path.is_dir():
content = [
(await self.read_content(subpath, get_content=False)).dict()
for subpath in path.iterdir()
if not subpath.name.startswith(".")
]
elif path.is_file() or path.is_symlink():
try:
async with await open_file(path) as f:
content = await f.read()
if as_json:
content = json.loads(content)
except Exception:
raise HTTPException(status_code=404, detail="Item not found")
format: Optional[str] = None
if path.is_dir():
size = None
type = "directory"
format = "json"
mimetype = None
elif path.is_file() or path.is_symlink():
size = get_file_size(path)
if path.suffix == ".ipynb":
type = "notebook"
format = None
mimetype = None
if content is not None:
nb: dict
if as_json:
content = cast(Dict, content)
nb = content
else:
content = cast(str, content)
nb = json.loads(content)
for cell in nb["cells"]:
if "metadata" not in cell:
cell["metadata"] = {}
cell["metadata"].update({"trusted": False})
if not as_json:
content = json.dumps(nb)
elif path.suffix == ".json":
type = "json"
format = "text"
mimetype = "application/json"
else:
type = "file"
format = None
mimetype = "text/plain"
else:
raise HTTPException(status_code=404, detail="Item not found")
return Content(
**{
"name": path.name,
"path": path.as_posix(),
"last_modified": get_file_modification_time(path),
"created": get_file_creation_time(path),
"content": content,
"format": format,
"mimetype": mimetype,
"size": size,
"writable": is_file_writable(path),
"type": type,
}
)
async def write_content(self, content: Union[SaveContent, Dict]) -> None:
if not isinstance(content, SaveContent):
content = SaveContent(**content)
async with await open_file(content.path, "w") as f:
if content.format == "json":
dict_content = cast(Dict, content.content)
if content.type == "notebook":
# see https://github.com/jupyterlab/jupyterlab/issues/11005
if "metadata" in dict_content and "orig_nbformat" in dict_content["metadata"]:
del dict_content["metadata"]["orig_nbformat"]
await f.write(json.dumps(dict_content, indent=2))
else:
content.content = cast(str, content.content)
await f.write(content.content)
@property
def file_id_manager(self):
return FileIdManager()
def get_available_path(path: Path, sep: str = ""):
directory = path.parent
name = Path(path.name)
i = None
while True:
if i is None:
i_str = ""
i = 1
else:
i_str = str(i)
i += 1
if i_str:
i_str = sep + i_str
available_path = directory / (name.stem + i_str + name.suffix)
if not available_path.exists():
return available_path
def get_file_modification_time(path: Path):
if path.exists():
return datetime.utcfromtimestamp(path.stat().st_mtime).isoformat() + "Z"
def get_file_creation_time(path: Path):
if path.exists():
return datetime.utcfromtimestamp(path.stat().st_ctime).isoformat() + "Z"
def get_file_size(path: Path) -> Optional[int]:
if path.exists():
return path.stat().st_size
raise HTTPException(status_code=404, detail="Item not found")
def is_file_writable(path: Path) -> bool:
if path.exists():
if path.is_dir():
# FIXME
return True
else:
return os.access(path, os.W_OK)
return False