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https://github.com/Stone-Red-Code/dvc.git
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87 lines
2.1 KiB
Python
87 lines
2.1 KiB
Python
import errno
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import logging
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import os
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from typing import TYPE_CHECKING, Optional
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from .errors import ObjectFormatError
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if TYPE_CHECKING:
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from dvc.fs.base import FileSystem
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from dvc.hash_info import HashInfo
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from dvc.types import AnyPath
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from .db.base import ObjectDB
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logger = logging.getLogger(__name__)
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class HashFile:
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def __init__(
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self,
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fs_path: Optional["AnyPath"],
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fs: Optional["FileSystem"],
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hash_info: "HashInfo",
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name: Optional[str] = None,
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):
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self.fs_path = fs_path
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self.fs = fs
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self.hash_info = hash_info
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self.name = name
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def __len__(self):
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return 1
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def __str__(self):
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return f"object {self.hash_info}"
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def __bool__(self):
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return bool(self.hash_info)
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def __eq__(self, other):
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if not isinstance(other, HashFile):
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return False
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return (
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self.fs_path == other.fs_path
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and self.fs == other.fs
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and self.hash_info == other.hash_info
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)
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def __hash__(self):
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return hash(
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(
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self.hash_info,
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self.fs_path,
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self.fs.scheme if self.fs else None,
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)
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)
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def check(self, odb: "ObjectDB", check_hash: bool = True):
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if not check_hash:
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assert self.fs
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if not self.fs.exists(self.fs_path):
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raise FileNotFoundError(
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errno.ENOENT, os.strerror(errno.ENOENT), self.fs_path
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)
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else:
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return None
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self._check_hash(odb)
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def _check_hash(self, odb):
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from .stage import get_file_hash
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_, actual = get_file_hash(
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self.fs_path, self.fs, self.hash_info.name, odb.state
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)
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logger.trace(
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"cache '%s' expected '%s' actual '%s'",
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self.fs_path,
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self.hash_info,
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actual,
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)
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assert actual.name == self.hash_info.name
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if actual.value.split(".")[0] != self.hash_info.value.split(".")[0]:
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raise ObjectFormatError(f"{self} is corrupted")
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