async def fd_read(self,
fd: FileDescriptor,
size: int,
offset: int,
raise_eof: bool = False) -> bytes:
# Loop over attemps
missing: List[BlockAccess] = []
while True:
# Load missing blocks
await self.remote_loader.load_blocks(missing)
# Fetch and lock
async with self._load_and_lock_file(fd) as manifest:
# End of file
if raise_eof and offset >= manifest.size:
raise FSEndOfFileError()
# Normalize
offset = normalize_argument(offset, manifest)
size = normalize_argument(size, manifest)
# No-op
if offset > manifest.size:
return b""
# Prepare
chunks = prepare_read(manifest, size, offset)
data, missing = await self._build_data(chunks)
# Return the data
if not missing:
return data
def read(self, manifest: LocalFileManifest, size: int,
offset: int) -> bytearray:
chunks = prepare_read(manifest, size, offset)
return self.build_data(chunks)