mirror of
https://github.com/vladmandic/automatic
synced 2026-09-05 04:20:44 +02:00
awsr
e4aaed9eee
Minor usage change. Instead of setting the hash info directly, call `add_hash` to ensure proper data structure.
123 lines
4.2 KiB
Python
123 lines
4.2 KiB
Python
import hashlib
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import os.path
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from collections import defaultdict
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from typing import TypedDict
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from rich import progress, errors
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from modules.logger import console
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from modules.logger import log
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from modules.json_helpers import readfile, writefile
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from modules.paths import data_path
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class HashEntry(TypedDict):
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mtime: float
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sha256: str
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class HashStore(dict[str, HashEntry]):
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def __init__(self, *args):
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super().__init__(*args)
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def add_hash(self, key: str, mtime: float = 0, sha256: str | None = None):
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self.__setitem__(key, {"mtime": mtime, "sha256": sha256 or ""})
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cache_filename = os.path.join(data_path, "data", "cache.json")
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# defaultdict allows for easily using new stores without needing to define them ahead of time
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_data: defaultdict[str, HashStore] = defaultdict(HashStore)
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progress_ok = True
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def init_cache():
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if os.path.isfile(cache_filename):
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for store, data in readfile(cache_filename, lock=True, as_type="dict").items():
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_data[store] = HashStore(data)
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def dump_cache():
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writefile(_data, cache_filename)
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def cache(store: str = "hashes") -> HashStore:
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return _data[store]
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def calculate_sha256(filename, quiet=False):
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global progress_ok # pylint: disable=global-statement
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hash_sha256 = hashlib.sha256()
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blksize = 1024 * 1024
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if not quiet:
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if progress_ok:
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try:
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with progress.open(filename, 'rb', description=f'[cyan]Calculating hash: [yellow]{filename}', auto_refresh=True, console=console) as f:
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for chunk in iter(lambda: f.read(blksize), b""):
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hash_sha256.update(chunk)
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except errors.LiveError:
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log.warning('Hash: attempting to use function in a thread')
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progress_ok = False
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if not progress_ok:
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with open(filename, 'rb') as f:
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for chunk in iter(lambda: f.read(blksize), b""):
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hash_sha256.update(chunk)
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else:
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with open(filename, 'rb') as f:
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for chunk in iter(lambda: f.read(blksize), b""):
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hash_sha256.update(chunk)
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return hash_sha256.hexdigest()
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def sha256_from_cache(filename: str, title: str, use_addnet_hash=False):
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hashes = cache("hashes-addnet") if use_addnet_hash else cache("hashes")
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if title not in hashes:
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return None
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cached = hashes[title]
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ondisk_mtime = os.path.getmtime(filename) if os.path.isfile(filename) else 0
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if ondisk_mtime > cached["mtime"] or not cached["sha256"]:
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return None
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return cached["sha256"]
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def sha256(filename: str, title: str, use_addnet_hash=False):
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from modules import shared
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global progress_ok # pylint: disable=global-statement
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hashes = cache("hashes-addnet") if use_addnet_hash else cache("hashes")
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sha256_value = sha256_from_cache(filename, title, use_addnet_hash)
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if sha256_value is not None:
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return sha256_value
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if shared.cmd_opts.no_hashing:
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return None
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if not os.path.isfile(filename):
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return None
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jobid = shared.state.begin("Hash")
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if use_addnet_hash:
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if progress_ok:
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try:
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with progress.open(filename, 'rb', description=f'[cyan]Calculating hash: [yellow]{filename}', auto_refresh=True, console=console) as f:
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sha256_value = addnet_hash_safetensors(f)
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except errors.LiveError:
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log.warning('Hash: attempting to use function in a thread')
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progress_ok = False
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if not progress_ok:
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with open(filename, 'rb') as f:
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sha256_value = addnet_hash_safetensors(f)
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else:
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sha256_value = calculate_sha256(filename)
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hashes.add_hash(title, os.path.getmtime(filename), sha256_value)
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shared.state.end(jobid)
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dump_cache()
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return sha256_value
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def addnet_hash_safetensors(b):
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"""kohya-ss hash for safetensors from https://github.com/kohya-ss/sd-scripts/blob/main/library/train_util.py"""
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hash_sha256 = hashlib.sha256()
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blksize = 1024 * 1024
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b.seek(0)
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header = b.read(8)
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n = int.from_bytes(header, "little")
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offset = n + 8
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b.seek(offset)
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for chunk in iter(lambda: b.read(blksize), b""):
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hash_sha256.update(chunk)
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return hash_sha256.hexdigest()
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