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from datetime import datetime as dtp
import errno
import stat
from queue import SimpleQueue, Empty
from fuse import (
Operations,
FuseOSError,
LoggingMixIn,
fuse_get_context,
)
from .types import Status
class StatusFileSystem(Operations, LoggingMixIn):
"""
Implements a FUSE file system for mapping (ActivityPub, Mastodon, ...) statuses to text files.
"""
def __init__(self):
"""
Initialize a new instance of StatusFileSystem, to be used with FUSE.
"""
self.__queue: SimpleQueue[list[Status]] = SimpleQueue()
self.__statuses: list[Status] = []
self.__fd = 0
def getattr(self, path, fh=None):
(uid, gid, _) = fuse_get_context()
if path == "/":
return {
"st_mode": (stat.S_IFDIR | 0o700), # Directory
"st_nlink": 2,
"st_uid": uid,
"st_gid": gid,
}
found = next((s for s in self.__statuses if s.id == path[1:]), None)
if found:
published_dt = dtp.fromisoformat(found.published)
pubunix = published_dt.timestamp()
return {
"st_mode": (stat.S_IFREG | 0o400),
"st_size": len(found.content.encode("utf8")),
"st_nlink": 1,
"st_uid": uid,
"st_gid": gid,
"st_ctime": pubunix,
"st_mtime": pubunix,
}
raise FuseOSError(errno.ENOENT)
def __update_status_field(self):
"""
Update the internal statuses list with new statuses from the queue.
"""
try:
while True:
statuses = self.__queue.get_nowait()
self.__statuses.extend(statuses)
except Empty:
pass
def list_dir(self) -> list[str]:
self.__update_status_field()
return [s.id for s in self.__statuses]
def readdir(self, path, fh):
dir_entries = []
if path != "/":
raise FuseOSError(errno.ENOENT)
dir_entries = [".", ".."]
dir_entries += self.list_dir()
return dir_entries
def add_statuses(self, statuses: list[Status]):
"""
Add new statuses to the queue.
Args:
statuses (list): A list of Status objects to be added.
"""
self.__queue.put(statuses)
def open(self, path, flags): # type: ignore
self.__fd += 1
return self.__fd
def read(self, path, size, offset, fh): # type: ignore
found = next(s for s in self.__statuses if s.id == path[1:])
if found:
return found.content.encode("utf8")
raise FuseOSError(errno.ENOENT)
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