mirror of https://github.com/deadc0de6/catcli
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143 lines
4.1 KiB
Python
143 lines
4.1 KiB
Python
"""
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author: deadc0de6 (https://github.com/deadc0de6)
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Copyright (c) 2023, deadc0de6
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fuse for catcli
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"""
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import os
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import logging
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from time import time
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from stat import S_IFDIR, S_IFREG
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from typing import List, Dict, Any
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import anytree # type: ignore
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import fuse # type: ignore
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from .noder import Noder
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# build custom logger to log in /tmp
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logger = logging.getLogger(__name__)
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logger.setLevel(logging.DEBUG)
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fh = logging.FileHandler('/tmp/fuse-catcli.log')
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fh.setLevel(logging.DEBUG)
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logger.addHandler(fh)
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# globals
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WILD = '*'
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SEPARATOR = '/'
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class Fuser:
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"""fuse filesystem mounter"""
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def __init__(self, mountpoint: str,
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top: anytree.AnyNode,
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noder: Noder,
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debug: bool = False):
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"""fuse filesystem"""
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filesystem = CatcliFilesystem(top, noder)
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fuse.FUSE(filesystem,
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mountpoint,
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foreground=debug,
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allow_other=True,
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nothreads=True,
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debug=debug)
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class CatcliFilesystem(fuse.LoggingMixIn, fuse.Operations): # type: ignore
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"""in-memory filesystem for catcli catalog"""
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def __init__(self, top: anytree.AnyNode,
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noder: Noder):
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"""init fuse filesystem"""
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self.top = top
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self.noder = noder
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def _get_entry(self, path: str) -> anytree.AnyNode:
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"""return the node pointed by path"""
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pre = f'{SEPARATOR}{self.noder.NAME_TOP}'
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if not path.startswith(pre):
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path = pre + path
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found = self.noder.list(self.top, path,
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rec=False,
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fmt='native',
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raw=True)
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if found:
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return found[0]
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return None
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def _get_entries(self, path: str) -> List[anytree.AnyNode]:
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"""return nodes pointed by path"""
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pre = f'{SEPARATOR}{self.noder.NAME_TOP}'
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if not path.startswith(pre):
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path = pre + path
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if not path.endswith(SEPARATOR):
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path += SEPARATOR
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if not path.endswith(WILD):
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path += WILD
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found = self.noder.list(self.top, path,
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rec=False,
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fmt='native',
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raw=True)
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return found
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def _getattr(self, path: str) -> Dict[str, Any]:
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entry = self._get_entry(path)
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if not entry:
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return {}
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curt = time()
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mode: Any = S_IFREG
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if entry.type == Noder.TYPE_ARC:
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mode = S_IFREG
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elif entry.type == Noder.TYPE_DIR:
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mode = S_IFDIR
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elif entry.type == Noder.TYPE_FILE:
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mode = S_IFREG
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elif entry.type == Noder.TYPE_STORAGE:
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mode = S_IFDIR
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elif entry.type == Noder.TYPE_META:
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mode = S_IFREG
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elif entry.type == Noder.TYPE_TOP:
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mode = S_IFREG
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return {
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'st_mode': (mode),
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'st_nlink': 1,
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'st_size': 0,
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'st_ctime': curt,
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'st_mtime': curt,
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'st_atime': curt,
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'st_uid': os.getuid(),
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'st_gid': os.getgid(),
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}
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def getattr(self, path: str, _fh: Any = None) -> Dict[str, Any]:
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"""return attr of file pointed by path"""
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logger.info('getattr path: %s', path)
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if path == '/':
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# mountpoint
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curt = time()
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meta = {
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'st_mode': (S_IFDIR),
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'st_nlink': 1,
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'st_size': 0,
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'st_ctime': curt,
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'st_mtime': curt,
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'st_atime': curt,
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'st_uid': os.getuid(),
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'st_gid': os.getgid(),
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}
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return meta
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meta = self._getattr(path)
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return meta
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def readdir(self, path: str, _fh: Any) -> List[str]:
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"""read directory content"""
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logger.info('readdir path: %s', path)
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content = ['.', '..']
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entries = self._get_entries(path)
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for entry in entries:
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content.append(entry.name)
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return content
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