"""A base class for contents managers.""" # Copyright (c) Jupyter Development Team. # Distributed under the terms of the Modified BSD License. from __future__ import annotations import itertools import json import os import re import typing as t import warnings from fnmatch import fnmatch from jupyter_core.utils import ensure_async, run_sync from jupyter_events import EventLogger from nbformat import ValidationError, sign from nbformat import validate as validate_nb from nbformat.v4 import new_notebook from tornado.web import HTTPError, RequestHandler from traitlets import ( Any, Bool, Dict, Instance, List, TraitError, Type, Unicode, default, validate, ) from traitlets.config.configurable import LoggingConfigurable from jupyter_server import DEFAULT_EVENTS_SCHEMA_PATH, JUPYTER_SERVER_EVENTS_URI from jupyter_server.transutils import _i18n from jupyter_server.utils import import_item from ...files.handlers import FilesHandler from .checkpoints import AsyncCheckpoints, Checkpoints copy_pat = re.compile(r"\-Copy\d*\.") class ContentsManager(LoggingConfigurable): """Base class for serving files and directories. This serves any text or binary file, as well as directories, with special handling for JSON notebook documents. Most APIs take a path argument, which is always an API-style unicode path, and always refers to a directory. - unicode, not url-escaped - '/'-separated - leading and trailing '/' will be stripped - if unspecified, path defaults to '', indicating the root path. """ event_schema_id = JUPYTER_SERVER_EVENTS_URI + "/contents_service/v1" event_logger = Instance(EventLogger).tag(config=True) @default("event_logger") def _default_event_logger(self): if self.parent and hasattr(self.parent, "event_logger"): return self.parent.event_logger else: # If parent does not have an event logger, create one. logger = EventLogger() schema_path = DEFAULT_EVENTS_SCHEMA_PATH / "contents_service" / "v1.yaml" logger.register_event_schema(schema_path) return logger def emit(self, data): """Emit event using the core event schema from Jupyter Server's Contents Manager.""" self.event_logger.emit(schema_id=self.event_schema_id, data=data) root_dir = Unicode("/", config=True) preferred_dir = Unicode( "", config=True, help=_i18n( "Preferred starting directory to use for notebooks. This is an API path (`/` separated, relative to root dir)" ), ) @validate("preferred_dir") def _validate_preferred_dir(self, proposal): value = proposal["value"].strip("/") try: import inspect if inspect.iscoroutinefunction(self.dir_exists): dir_exists = run_sync(self.dir_exists)(value) else: dir_exists = self.dir_exists(value) except HTTPError as e: raise TraitError(e.log_message) from e if not dir_exists: raise TraitError(_i18n("Preferred directory not found: %r") % value) if self.parent: try: if value != self.parent.preferred_dir: self.parent.preferred_dir = os.path.join(self.root_dir, *value.split("/")) except TraitError: pass return value allow_hidden = Bool(False, config=True, help="Allow access to hidden files") notary = Instance(sign.NotebookNotary) @default("notary") def _notary_default(self): return sign.NotebookNotary(parent=self) hide_globs = List( Unicode(), [ "__pycache__", "*.pyc", "*.pyo", ".DS_Store", "*.so", "*.dylib", "*~", ], config=True, help=""" Glob patterns to hide in file and directory listings. """, ) untitled_notebook = Unicode( _i18n("Untitled"), config=True, help="The base name used when creating untitled notebooks.", ) untitled_file = Unicode( "untitled", config=True, help="The base name used when creating untitled files." ) untitled_directory = Unicode( "Untitled Folder", config=True, help="The base name used when creating untitled directories.", ) pre_save_hook = Any( None, config=True, allow_none=True, help="""Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other side effects that should not be saved. It will be called as (all arguments passed by keyword):: hook(path=path, model=model, contents_manager=self) - model: the model to be saved. Includes file contents. Modifying this dict will affect the file that is stored. - path: the API path of the save destination - contents_manager: this ContentsManager instance """, ) @validate("pre_save_hook") def _validate_pre_save_hook(self, proposal): value = proposal["value"] if isinstance(value, str): value = import_item(self.pre_save_hook) if not callable(value): msg = "pre_save_hook must be callable" raise TraitError(msg) if callable(self.pre_save_hook): warnings.warn( f"Overriding existing pre_save_hook ({self.pre_save_hook.__name__}) with a new one ({value.__name__}).", stacklevel=2, ) return value post_save_hook = Any( None, config=True, allow_none=True, help="""Python callable or importstring thereof to be called on the path of a file just saved. This can be used to process the file on disk, such as converting the notebook to a script or HTML via nbconvert. It will be called as (all arguments passed by keyword):: hook(os_path=os_path, model=model, contents_manager=instance) - path: the filesystem path to the file just written - model: the model representing the file - contents_manager: this ContentsManager instance """, ) @validate("post_save_hook") def _validate_post_save_hook(self, proposal): value = proposal["value"] if isinstance(value, str): value = import_item(value) if not callable(value): msg = "post_save_hook must be callable" raise TraitError(msg) if callable(self.post_save_hook): warnings.warn( f"Overriding existing post_save_hook ({self.post_save_hook.__name__}) with a new one ({value.__name__}).", stacklevel=2, ) return value def run_pre_save_hook(self, model, path, **kwargs): """Run the pre-save hook if defined, and log errors""" warnings.warn( "run_pre_save_hook is deprecated, use run_pre_save_hooks instead.", DeprecationWarning, stacklevel=2, ) if self.pre_save_hook: try: self.log.debug("Running pre-save hook on %s", path) self.pre_save_hook(model=model, path=path, contents_manager=self, **kwargs) except HTTPError: # allow custom HTTPErrors to raise, # rejecting the save with a message. raise except Exception: # unhandled errors don't prevent saving, # which could cause frustrating data loss self.log.error("Pre-save hook failed on %s", path, exc_info=True) def run_post_save_hook(self, model, os_path): """Run the post-save hook if defined, and log errors""" warnings.warn( "run_post_save_hook is deprecated, use run_post_save_hooks instead.", DeprecationWarning, stacklevel=2, ) if self.post_save_hook: try: self.log.debug("Running post-save hook on %s", os_path) self.post_save_hook(os_path=os_path, model=model, contents_manager=self) except Exception: self.log.error("Post-save hook failed o-n %s", os_path, exc_info=True) msg = "fUnexpected error while running post hook save: {e}" raise HTTPError(500, msg) from None _pre_save_hooks: List[t.Any] = List() _post_save_hooks: List[t.Any] = List() def register_pre_save_hook(self, hook): """Register a pre save hook.""" if isinstance(hook, str): hook = import_item(hook) if not callable(hook): msg = "hook must be callable" raise RuntimeError(msg) self._pre_save_hooks.append(hook) def register_post_save_hook(self, hook): """Register a post save hook.""" if isinstance(hook, str): hook = import_item(hook) if not callable(hook): msg = "hook must be callable" raise RuntimeError(msg) self._post_save_hooks.append(hook) def run_pre_save_hooks(self, model, path, **kwargs): """Run the pre-save hooks if any, and log errors""" pre_save_hooks = [self.pre_save_hook] if self.pre_save_hook is not None else [] pre_save_hooks += self._pre_save_hooks for pre_save_hook in pre_save_hooks: try: self.log.debug("Running pre-save hook on %s", path) pre_save_hook(model=model, path=path, contents_manager=self, **kwargs) except HTTPError: # allow custom HTTPErrors to raise, # rejecting the save with a message. raise except Exception: # unhandled errors don't prevent saving, # which could cause frustrating data loss self.log.error( "Pre-save hook %s failed on %s", pre_save_hook.__name__, path, exc_info=True, ) def run_post_save_hooks(self, model, os_path): """Run the post-save hooks if any, and log errors""" post_save_hooks = [self.post_save_hook] if self.post_save_hook is not None else [] post_save_hooks += self._post_save_hooks for post_save_hook in post_save_hooks: try: self.log.debug("Running post-save hook on %s", os_path) post_save_hook(os_path=os_path, model=model, contents_manager=self) except Exception as e: self.log.error( "Post-save %s hook failed on %s", post_save_hook.__name__, os_path, exc_info=True, ) raise HTTPError(500, "Unexpected error while running post hook save: %s" % e) from e checkpoints_class = Type(Checkpoints, config=True) checkpoints = Instance(Checkpoints, config=True) checkpoints_kwargs = Dict(config=True) @default("checkpoints") def _default_checkpoints(self): return self.checkpoints_class(**self.checkpoints_kwargs) @default("checkpoints_kwargs") def _default_checkpoints_kwargs(self): return { "parent": self, "log": self.log, } files_handler_class = Type( FilesHandler, klass=RequestHandler, allow_none=True, config=True, help="""handler class to use when serving raw file requests. Default is a fallback that talks to the ContentsManager API, which may be inefficient, especially for large files. Local files-based ContentsManagers can use a StaticFileHandler subclass, which will be much more efficient. Access to these files should be Authenticated. """, ) files_handler_params = Dict( config=True, help="""Extra parameters to pass to files_handler_class. For example, StaticFileHandlers generally expect a `path` argument specifying the root directory from which to serve files. """, ) def get_extra_handlers(self): """Return additional handlers Default: self.files_handler_class on /files/.* """ handlers = [] if self.files_handler_class: handlers.append((r"/files/(.*)", self.files_handler_class, self.files_handler_params)) return handlers # ContentsManager API part 1: methods that must be # implemented in subclasses. def dir_exists(self, path): """Does a directory exist at the given path? Like os.path.isdir Override this method in subclasses. Parameters ---------- path : str The path to check Returns ------- exists : bool Whether the path does indeed exist. """ raise NotImplementedError def is_hidden(self, path): """Is path a hidden directory or file? Parameters ---------- path : str The path to check. This is an API path (`/` separated, relative to root dir). Returns ------- hidden : bool Whether the path is hidden. """ raise NotImplementedError def file_exists(self, path=""): """Does a file exist at the given path? Like os.path.isfile Override this method in subclasses. Parameters ---------- path : str The API path of a file to check for. Returns ------- exists : bool Whether the file exists. """ raise NotImplementedError def exists(self, path): """Does a file or directory exist at the given path? Like os.path.exists Parameters ---------- path : str The API path of a file or directory to check for. Returns ------- exists : bool Whether the target exists. """ return self.file_exists(path) or self.dir_exists(path) def get(self, path, content=True, type=None, format=None, require_hash=False): """Get a file or directory model. Parameters ---------- require_hash : bool Whether the file hash must be returned or not. *Changed in version 2.11*: The *require_hash* parameter was added. """ raise NotImplementedError def save(self, model, path): """ Save a file or directory model to path. Should return the saved model with no content. Save implementations should call self.run_pre_save_hook(model=model, path=path) prior to writing any data. """ raise NotImplementedError def delete_file(self, path): """Delete the file or directory at path.""" raise NotImplementedError def rename_file(self, old_path, new_path): """Rename a file or directory.""" raise NotImplementedError # ContentsManager API part 2: methods that have usable default # implementations, but can be overridden in subclasses. def delete(self, path): """Delete a file/directory and any associated checkpoints.""" path = path.strip("/") if not path: raise HTTPError(400, "Can't delete root") self.delete_file(path) self.checkpoints.delete_all_checkpoints(path) self.emit(data={"action": "delete", "path": path}) def rename(self, old_path, new_path): """Rename a file and any checkpoints associated with that file.""" self.rename_file(old_path, new_path) self.checkpoints.rename_all_checkpoints(old_path, new_path) self.emit(data={"action": "rename", "path": new_path, "source_path": old_path}) def update(self, model, path): """Update the file's path For use in PATCH requests, to enable renaming a file without re-uploading its contents. Only used for renaming at the moment. """ path = path.strip("/") new_path = model.get("path", path).strip("/") if path != new_path: self.rename(path, new_path) model = self.get(new_path, content=False) return model def info_string(self): """The information string for the manager.""" return "Serving contents" def get_kernel_path(self, path, model=None): """Return the API path for the kernel KernelManagers can turn this value into a filesystem path, or ignore it altogether. The default value here will start kernels in the directory of the notebook server. FileContentsManager overrides this to use the directory containing the notebook. """ return "" def increment_filename(self, filename, path="", insert=""): """Increment a filename until it is unique. Parameters ---------- filename : unicode The name of a file, including extension path : unicode The API path of the target's directory insert : unicode The characters to insert after the base filename Returns ------- name : unicode A filename that is unique, based on the input filename. """ # Extract the full suffix from the filename (e.g. .tar.gz) path = path.strip("/") basename, dot, ext = filename.rpartition(".") if ext != "ipynb": basename, dot, ext = filename.partition(".") suffix = dot + ext for i in itertools.count(): insert_i = f"{insert}{i}" if i else "" name = f"{basename}{insert_i}{suffix}" if not self.exists(f"{path}/{name}"): break return name def validate_notebook_model(self, model, validation_error=None): """Add failed-validation message to model""" try: # If we're given a validation_error dictionary, extract the exception # from it and raise the exception, else call nbformat's validate method # to determine if the notebook is valid. This 'else' condition may # pertain to server extension not using the server's notebook read/write # functions. if validation_error is not None: e = validation_error.get("ValidationError") if isinstance(e, ValidationError): raise e else: validate_nb(model["content"]) except ValidationError as e: model["message"] = "Notebook validation failed: {}:\n{}".format( str(e), json.dumps(e.instance, indent=1, default=lambda obj: ""), ) return model def new_untitled(self, path="", type="", ext=""): """Create a new untitled file or directory in path path must be a directory File extension can be specified. Use `new` to create files with a fully specified path (including filename). """ path = path.strip("/") if not self.dir_exists(path): raise HTTPError(404, "No such directory: %s" % path) model = {} if type: model["type"] = type if ext == ".ipynb": model.setdefault("type", "notebook") else: model.setdefault("type", "file") insert = "" if model["type"] == "directory": untitled = self.untitled_directory insert = " " elif model["type"] == "notebook": untitled = self.untitled_notebook ext = ".ipynb" elif model["type"] == "file": untitled = self.untitled_file else: raise HTTPError(400, "Unexpected model type: %r" % model["type"]) name = self.increment_filename(untitled + ext, path, insert=insert) path = f"{path}/{name}" return self.new(model, path) def new(self, model=None, path=""): """Create a new file or directory and return its model with no content. To create a new untitled entity in a directory, use `new_untitled`. """ path = path.strip("/") if model is None: model = {} if path.endswith(".ipynb"): model.setdefault("type", "notebook") else: model.setdefault("type", "file") # no content, not a directory, so fill out new-file model if "content" not in model and model["type"] != "directory": if model["type"] == "notebook": model["content"] = new_notebook() model["format"] = "json" else: model["content"] = "" model["type"] = "file" model["format"] = "text" model = self.save(model, path) return model def copy(self, from_path, to_path=None): """Copy an existing file and return its new model. If to_path not specified, it will be the parent directory of from_path. If to_path is a directory, filename will increment `from_path-Copy#.ext`. Considering multi-part extensions, the Copy# part will be placed before the first dot for all the extensions except `ipynb`. For easier manual searching in case of notebooks, the Copy# part will be placed before the last dot. from_path must be a full path to a file. """ path = from_path.strip("/") if to_path is not None: to_path = to_path.strip("/") if "/" in path: from_dir, from_name = path.rsplit("/", 1) else: from_dir = "" from_name = path model = self.get(path) model.pop("path", None) model.pop("name", None) if model["type"] == "directory": raise HTTPError(400, "Can't copy directories") is_destination_specified = to_path is not None if not is_destination_specified: to_path = from_dir if self.dir_exists(to_path): name = copy_pat.sub(".", from_name) to_name = self.increment_filename(name, to_path, insert="-Copy") to_path = f"{to_path}/{to_name}" elif is_destination_specified: if "/" in to_path: to_dir, to_name = to_path.rsplit("/", 1) if not self.dir_exists(to_dir): raise HTTPError(404, "No such parent directory: %s to copy file in" % to_dir) else: raise HTTPError(404, "No such directory: %s" % to_path) model = self.save(model, to_path) self.emit(data={"action": "copy", "path": to_path, "source_path": from_path}) return model def log_info(self): """Log the information string for the manager.""" self.log.info(self.info_string()) def trust_notebook(self, path): """Explicitly trust a notebook Parameters ---------- path : str The path of a notebook """ model = self.get(path) nb = model["content"] self.log.warning("Trusting notebook %s", path) self.notary.mark_cells(nb, True) self.check_and_sign(nb, path) def check_and_sign(self, nb, path=""): """Check for trusted cells, and sign the notebook. Called as a part of saving notebooks. Parameters ---------- nb : dict The notebook dict path : str The notebook's path (for logging) """ if self.notary.check_cells(nb): self.notary.sign(nb) else: self.log.warning("Notebook %s is not trusted", path) def mark_trusted_cells(self, nb, path=""): """Mark cells as trusted if the notebook signature matches. Called as a part of loading notebooks. Parameters ---------- nb : dict The notebook object (in current nbformat) path : str The notebook's path (for logging) """ trusted = self.notary.check_signature(nb) if not trusted: self.log.warning("Notebook %s is not trusted", path) self.notary.mark_cells(nb, trusted) def should_list(self, name): """Should this file/directory name be displayed in a listing?""" return not any(fnmatch(name, glob) for glob in self.hide_globs) # Part 3: Checkpoints API def create_checkpoint(self, path): """Create a checkpoint.""" return self.checkpoints.create_checkpoint(self, path) def restore_checkpoint(self, checkpoint_id, path): """ Restore a checkpoint. """ self.checkpoints.restore_checkpoint(self, checkpoint_id, path) def list_checkpoints(self, path): return self.checkpoints.list_checkpoints(path) def delete_checkpoint(self, checkpoint_id, path): return self.checkpoints.delete_checkpoint(checkpoint_id, path) class AsyncContentsManager(ContentsManager): """Base class for serving files and directories asynchronously.""" checkpoints_class = Type(AsyncCheckpoints, config=True) checkpoints = Instance(AsyncCheckpoints, config=True) checkpoints_kwargs = Dict(config=True) @default("checkpoints") def _default_checkpoints(self): return self.checkpoints_class(**self.checkpoints_kwargs) @default("checkpoints_kwargs") def _default_checkpoints_kwargs(self): return { "parent": self, "log": self.log, } # ContentsManager API part 1: methods that must be # implemented in subclasses. async def dir_exists(self, path): """Does a directory exist at the given path? Like os.path.isdir Override this method in subclasses. Parameters ---------- path : str The path to check Returns ------- exists : bool Whether the path does indeed exist. """ raise NotImplementedError async def is_hidden(self, path): """Is path a hidden directory or file? Parameters ---------- path : str The path to check. This is an API path (`/` separated, relative to root dir). Returns ------- hidden : bool Whether the path is hidden. """ raise NotImplementedError async def file_exists(self, path=""): """Does a file exist at the given path? Like os.path.isfile Override this method in subclasses. Parameters ---------- path : str The API path of a file to check for. Returns ------- exists : bool Whether the file exists. """ raise NotImplementedError async def exists(self, path): """Does a file or directory exist at the given path? Like os.path.exists Parameters ---------- path : str The API path of a file or directory to check for. Returns ------- exists : bool Whether the target exists. """ return await ensure_async(self.file_exists(path)) or await ensure_async( self.dir_exists(path) ) async def get(self, path, content=True, type=None, format=None, require_hash=False): """Get a file or directory model. Parameters ---------- require_hash : bool Whether the file hash must be returned or not. *Changed in version 2.11*: The *require_hash* parameter was added. """ raise NotImplementedError async def save(self, model, path): """ Save a file or directory model to path. Should return the saved model with no content. Save implementations should call self.run_pre_save_hook(model=model, path=path) prior to writing any data. """ raise NotImplementedError async def delete_file(self, path): """Delete the file or directory at path.""" raise NotImplementedError async def rename_file(self, old_path, new_path): """Rename a file or directory.""" raise NotImplementedError # ContentsManager API part 2: methods that have usable default # implementations, but can be overridden in subclasses. async def delete(self, path): """Delete a file/directory and any associated checkpoints.""" path = path.strip("/") if not path: raise HTTPError(400, "Can't delete root") await self.delete_file(path) await self.checkpoints.delete_all_checkpoints(path) self.emit(data={"action": "delete", "path": path}) async def rename(self, old_path, new_path): """Rename a file and any checkpoints associated with that file.""" await self.rename_file(old_path, new_path) await self.checkpoints.rename_all_checkpoints(old_path, new_path) self.emit(data={"action": "rename", "path": new_path, "source_path": old_path}) async def update(self, model, path): """Update the file's path For use in PATCH requests, to enable renaming a file without re-uploading its contents. Only used for renaming at the moment. """ path = path.strip("/") new_path = model.get("path", path).strip("/") if path != new_path: await self.rename(path, new_path) model = await self.get(new_path, content=False) return model async def increment_filename(self, filename, path="", insert=""): """Increment a filename until it is unique. Parameters ---------- filename : unicode The name of a file, including extension path : unicode The API path of the target's directory insert : unicode The characters to insert after the base filename Returns ------- name : unicode A filename that is unique, based on the input filename. """ # Extract the full suffix from the filename (e.g. .tar.gz) path = path.strip("/") basename, dot, ext = filename.rpartition(".") if ext != "ipynb": basename, dot, ext = filename.partition(".") suffix = dot + ext for i in itertools.count(): insert_i = f"{insert}{i}" if i else "" name = f"{basename}{insert_i}{suffix}" file_exists = await ensure_async(self.exists(f"{path}/{name}")) if not file_exists: break return name async def new_untitled(self, path="", type="", ext=""): """Create a new untitled file or directory in path path must be a directory File extension can be specified. Use `new` to create files with a fully specified path (including filename). """ path = path.strip("/") dir_exists = await ensure_async(self.dir_exists(path)) if not dir_exists: raise HTTPError(404, "No such directory: %s" % path) model = {} if type: model["type"] = type if ext == ".ipynb": model.setdefault("type", "notebook") else: model.setdefault("type", "file") insert = "" if model["type"] == "directory": untitled = self.untitled_directory insert = " " elif model["type"] == "notebook": untitled = self.untitled_notebook ext = ".ipynb" elif model["type"] == "file": untitled = self.untitled_file else: raise HTTPError(400, "Unexpected model type: %r" % model["type"]) name = await self.increment_filename(untitled + ext, path, insert=insert) path = f"{path}/{name}" return await self.new(model, path) async def new(self, model=None, path=""): """Create a new file or directory and return its model with no content. To create a new untitled entity in a directory, use `new_untitled`. """ path = path.strip("/") if model is None: model = {} if path.endswith(".ipynb"): model.setdefault("type", "notebook") else: model.setdefault("type", "file") # no content, not a directory, so fill out new-file model if "content" not in model and model["type"] != "directory": if model["type"] == "notebook": model["content"] = new_notebook() model["format"] = "json" else: model["content"] = "" model["type"] = "file" model["format"] = "text" model = await self.save(model, path) return model async def copy(self, from_path, to_path=None): """Copy an existing file and return its new model. If to_path not specified, it will be the parent directory of from_path. If to_path is a directory, filename will increment `from_path-Copy#.ext`. Considering multi-part extensions, the Copy# part will be placed before the first dot for all the extensions except `ipynb`. For easier manual searching in case of notebooks, the Copy# part will be placed before the last dot. from_path must be a full path to a file. """ path = from_path.strip("/") if to_path is not None: to_path = to_path.strip("/") if "/" in path: from_dir, from_name = path.rsplit("/", 1) else: from_dir = "" from_name = path model = await self.get(path) model.pop("path", None) model.pop("name", None) if model["type"] == "directory": raise HTTPError(400, "Can't copy directories") is_destination_specified = to_path is not None if not is_destination_specified: to_path = from_dir if await ensure_async(self.dir_exists(to_path)): name = copy_pat.sub(".", from_name) to_name = await self.increment_filename(name, to_path, insert="-Copy") to_path = f"{to_path}/{to_name}" elif is_destination_specified: if "/" in to_path: to_dir, to_name = to_path.rsplit("/", 1) if not await ensure_async(self.dir_exists(to_dir)): raise HTTPError(404, "No such parent directory: %s to copy file in" % to_dir) else: raise HTTPError(404, "No such directory: %s" % to_path) model = await self.save(model, to_path) self.emit(data={"action": "copy", "path": to_path, "source_path": from_path}) return model async def trust_notebook(self, path): """Explicitly trust a notebook Parameters ---------- path : str The path of a notebook """ model = await self.get(path) nb = model["content"] self.log.warning("Trusting notebook %s", path) self.notary.mark_cells(nb, True) self.check_and_sign(nb, path) # Part 3: Checkpoints API async def create_checkpoint(self, path): """Create a checkpoint.""" return await self.checkpoints.create_checkpoint(self, path) async def restore_checkpoint(self, checkpoint_id, path): """ Restore a checkpoint. """ await self.checkpoints.restore_checkpoint(self, checkpoint_id, path) async def list_checkpoints(self, path): """List the checkpoints for a path.""" return await self.checkpoints.list_checkpoints(path) async def delete_checkpoint(self, checkpoint_id, path): """Delete a checkpoint for a path by id.""" return await self.checkpoints.delete_checkpoint(checkpoint_id, path)