async def get_by_id(conn: DBAnyConn, file_id: StrOrUUID) -> File:
"""
Return a file by ID.
Args:
conn (DBAnyConn): Database connection.
file_id (StrOrUUID): File ID.
Raises:
errors.FileNotFound: If file with a given ID does not exists.
Returns:
File: File with a target ID.
"""
query = """
SELECT
File {
id, name, path, size, mtime, mediatype: { name }
}
FILTER
.id = <uuid>$file_id
"""
try:
return from_db(await conn.query_required_single(query,
file_id=file_id))
except edgedb.NoDataError as exc:
raise errors.FileNotFound() from exc
async def get(conn: DBAnyConn, namespace: StrOrPath, path: StrOrPath) -> File:
"""
Return file with a target path.
Args:
conn (DBAnyConn): Database connection.
namespace (StrOrPath): Namespace where to look for a file.
path (StrOrPath): Path to a file.
Raises:
FileNotFound: If file with a target path does not exists.
Returns:
File: File with a target path.
"""
query = """
SELECT
File {
id, name, path, size, mtime, mediatype: { name }
}
FILTER
str_lower(.path) = str_lower(<str>$path)
AND
.namespace.path = <str>$namespace
"""
try:
return from_db(await
conn.query_required_single(query,
namespace=str(namespace),
path=str(path)))
except edgedb.NoDataError as exc:
raise errors.FileNotFound() from exc
def delete(self, ns_path: StrOrPath, path: StrOrPath) -> None:
fullpath = self._joinpath(self.location, ns_path, path)
try:
if os.path.isdir(fullpath):
shutil.rmtree(fullpath)
else:
os.unlink(fullpath)
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
async def move(
db_client: DBClient,
namespace: Namespace,
path: StrOrPath,
next_path: StrOrPath,
) -> File:
"""
Move a file or folder to a different location in the target Namespace.
If the source path is a folder all its contents will be moved.
Args:
db_client (DBClient): Database client.
namespace (Namespace): Namespace, where file/folder should be moved.
path (StrOrPath): Path to be moved.
next_path (StrOrPath): Path that is the destination.
Raises:
errors.FileNotFound: If source path does not exists.
errors.FileAlreadyExists: If some file already in the destination path.
errors.MissingParent: If 'next_path' parent does not exists.
errors.NotADirectory: If one of the 'next_path' parents is not a folder.
Returns:
File: Moved file/folder.
"""
path = str(path)
next_path = str(next_path)
assert path.lower() not in (".", config.TRASH_FOLDER_NAME.lower()), (
"Can't move Home or Trash folder.")
assert not next_path.lower().startswith(f"{path.lower()}/"), (
"Can't move to itself.")
if not await crud.file.exists(db_client, namespace.path, path):
raise errors.FileNotFound() from None
next_parent = os.path.normpath(os.path.dirname(next_path))
if not await crud.file.exists(db_client, namespace.path, next_parent):
raise errors.MissingParent() from None
if path.lower() != next_path.lower():
if await crud.file.exists(db_client, namespace.path, next_path):
raise errors.FileAlreadyExists() from None
await storage.move(namespace.path, path, next_path)
async for tx in db_client.transaction(): # pragma: no branch
async with tx:
file = await crud.file.move(tx, namespace.path, path, next_path)
return file
def move(
self,
ns_path: StrOrPath,
from_path: StrOrPath,
to_path: StrOrPath,
) -> None:
source = self._joinpath(self.location, ns_path, from_path)
destination = self._joinpath(self.location, ns_path, to_path)
try:
shutil.move(source, destination)
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
except NotADirectoryError as exc:
raise errors.NotADirectory() from exc
def iterdir(self, ns_path: StrOrPath,
path: StrOrPath) -> Iterator[StorageFile]:
dir_path = self._joinpath(self.location, ns_path, path)
try:
entries = os.scandir(dir_path)
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
except NotADirectoryError as exc:
raise errors.NotADirectory() from exc
for entry in entries:
try:
yield self._from_entry(ns_path, entry)
except FileNotFoundError:
if entry.is_symlink():
continue
raise # pragma: no cover
async def delete(conn: DBAnyConn, namespace: StrOrPath,
path: StrOrPath) -> File:
"""
Permanently delete file or a folder with all of its contents and decrease size
of the parents accordingly.
Args:
conn (DBAnyConn): Database connection.
namespace (StrOrPath): Namespace where to delete a file.
path (StrOrPath): Path to a file.
Raises:
FileNotFound: If file/folder with a given path does not exists.
Returns:
File: Deleted file.
"""
query = """
SELECT (
DELETE
File
FILTER
.namespace.path = <str>$namespace
AND (
str_lower(.path) = str_lower(<str>$path)
OR
str_lower(.path) LIKE str_lower(<str>$path) ++ '/%'
)
) { id, name, path, size, mtime, mediatype: { name } }
"""
try:
file = from_db((await conn.query(query,
namespace=str(namespace),
path=str(path)))[0])
except IndexError as exc:
raise errors.FileNotFound() from exc
await inc_size_batch(conn,
namespace,
PurePath(path).parents,
size=-file.size)
return file
async def create(conn: DBAnyConn, file_id: StrOrUUID, fp: int) -> None:
"""
Save file fingerprint to the database.
The fingerprint is stored as four 16-bit parts of original fingerprint.
Args:
conn (DBAnyConn): Database connection.
file_id (StrOrUUID): File to associate fingerprint with.
fp (int): A 64-bit fingerprint.
Raises:
errors.FingerprintAlreadyExists: If there is already a fingerprint for a file.
errors.FileNotFound: If a file with specified file ID doesn't exist.
"""
query = """
INSERT Fingerprint {
part1 := <int32>$part1,
part2 := <int32>$part2,
part3 := <int32>$part3,
part4 := <int32>$part4,
file := (
SELECT File
FILTER .id = <uuid>$file_id
LIMIT 1
)
}
"""
parts = _split_int8_by_int2(fp)
try:
await conn.query_required_single(
query,
file_id=file_id,
part1=parts[0],
part2=parts[1],
part3=parts[2],
part4=parts[3],
)
except edgedb.ConstraintViolationError as exc:
raise errors.FingerprintAlreadyExists() from exc
except edgedb.MissingRequiredError as exc:
raise errors.FileNotFound() from exc
def thumbnail(
self,
ns_path: StrOrPath,
path: StrOrPath,
size: int,
) -> tuple[int, IO[bytes]]:
fullpath = self._joinpath(self.location, ns_path, path)
buffer = BytesIO()
try:
with Image.open(fullpath) as im:
im.thumbnail((size, size))
exif_transpose(im).save(buffer, im.format)
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
except IsADirectoryError as exc:
raise errors.IsADirectory(f"Path '{path}' is a directory") from exc
except UnidentifiedImageError as exc:
msg = f"Can't generate thumbnail for a file: '{path}'"
raise errors.ThumbnailUnavailable(msg) from exc
size = buffer.seek(0, 2)
buffer.seek(0)
return size, buffer
def size(self, ns_path: StrOrPath, path: StrOrPath) -> int:
fullpath = self._joinpath(self.location, ns_path, path)
try:
return os.lstat(fullpath).st_size
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
def get_modified_time(self, ns_path: StrOrPath, path: StrOrPath) -> float:
fullpath = self._joinpath(self.location, ns_path, path)
try:
return os.lstat(fullpath).st_mtime
except FileNotFoundError as exc:
raise errors.FileNotFound() from exc
async def create_batch(
conn: DBAnyConn,
namespace: StrOrPath,
fingerprints: Iterable[tuple[StrOrPath, int] | None],
) -> None:
"""
Create fingerprints for multiple files in the same namespace at once.
Args:
conn (DBAnyConn): Database connection.
namespace (StrOrPath): Files namespace.
fingerprints (Iterable[tuple[StrOrPath, int]): Tuple, where the first element
is a file path, and the second one is a fingerprint.
Raises:
errors.FingerprintAlreadyExists: If fingerprints for a file already exists.
errors.FileNotFound: If file not found in a given namespace.
"""
query = """
WITH
fingerprints := array_unpack(<array<json>>$fingerprints),
namespace := (
SELECT
Namespace
FILTER
.path = <str>$ns_path
LIMIT 1
),
FOR fp in {fingerprints}
UNION (
INSERT Fingerprint {
part1 := <int32>fp['part1'],
part2 := <int32>fp['part2'],
part3 := <int32>fp['part3'],
part4 := <int32>fp['part4'],
file := (
SELECT
File
FILTER
.namespace = namespace
AND
.path = <str>fp['path']
LIMIT 1
)
}
)
"""
data = []
fingerprints = (fp for fp in fingerprints if fp is not None)
for path, fingerprint in fingerprints: # type: ignore
parts = _split_int8_by_int2(fingerprint)
data.append(
orjson.dumps({
"path": str(path),
"part1": parts[0],
"part2": parts[1],
"part3": parts[2],
"part4": parts[3],
}).decode())
try:
await conn.query(query, ns_path=str(namespace), fingerprints=data)
except edgedb.ConstraintViolationError as exc:
raise errors.FingerprintAlreadyExists() from exc
except edgedb.MissingRequiredError as exc:
raise errors.FileNotFound() from exc
