142 lines
5.0 KiB
Python
142 lines
5.0 KiB
Python
"""
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Cache utilities for SageUtils.
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Handles persistent storage and retrieval of model metadata, hashes, and info.
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"""
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import os
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import json
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import pathlib
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import folder_paths
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users_path = pathlib.Path(folder_paths.get_user_directory())
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sage_users_path = users_path / "default" / "SageUtils"
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os.makedirs(str(sage_users_path), exist_ok=True)
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class SageCache:
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"""
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Persistent cache for model metadata, hashes, and info.
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"""
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def __init__(self):
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if not (sage_users_path / "sage_cache.json").is_file():
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print("No cache file found in user directory.")
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self.main_path = sage_users_path / "sage_cache.json"
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self.info_path = sage_users_path / "sage_cache_info.json"
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self.hash_path = sage_users_path / "sage_cache_hash.json"
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self.data = {}
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self.hash = {}
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self.info = {}
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def by_path(self, file_path: str) -> dict:
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"""Get cache info by file path."""
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the_hash = self.hash.get(file_path, "")
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if the_hash:
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return self.info.get(the_hash, {})
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print(f"No hash found for file: {file_path}")
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return {}
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def by_hash(self, file_hash: str) -> dict:
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"""Get cache info by file hash."""
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return self.info.get(file_hash, {})
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def convert_old_cache(self):
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"""Convert old cache format to new format, splitting into hash and info."""
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print("Converting old cache format to new format.")
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for key in self.data:
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current_hash = self.data[key].get("hash", "")
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if current_hash:
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self.hash[key] = current_hash
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# Add the ones not on civitai first
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if self.data[key].get("civitai", False) == False:
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self.info[current_hash] = self.data[key]
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for key in self.data:
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current_hash = self.data[key].get("hash", "")
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# Add the ones on civitai, overwriting the previous ones
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if current_hash and self.data[key].get("civitai", False):
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self.info[current_hash] = self.data[key]
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def load(self):
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"""Load cache from disk."""
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print("Loading cache from disk.")
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try:
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if self.hash_path.is_file() and self.info_path.is_file():
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with self.hash_path.open("r") as read_file:
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self.hash = json.load(read_file)
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with self.info_path.open("r") as read_file:
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self.info = json.load(read_file)
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else:
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if self.main_path.is_file():
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with self.main_path.open("r") as read_file:
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self.data = json.load(read_file)
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self.convert_old_cache()
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except Exception as e:
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print(f"Unable to load cache: {e}")
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def save(self):
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"""Save cache to disk."""
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def _save_json(path, data, label):
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print(f"Saving {label} to {path}")
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try:
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with path.open("w") as output_file:
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json.dump(data, output_file, separators=(",", ":"), sort_keys=True, indent=4)
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except Exception as e:
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print(f"Unable to save {label} to {path}: {e}")
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#if self.data:
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# _save_json(self.main_path, self.data, "main cache")
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if self.hash:
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print(f"Saving hash cache to {self.hash_path}")
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_save_json(self.hash_path, self.hash, "hash cache")
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if self.info:
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print(f"Saving info cache to {self.info_path}")
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_save_json(self.info_path, self.info, "info cache")
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def add_entry(self, file_path: str, file_hash: str):
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self.hash[file_path] = file_hash
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if file_hash not in self.info:
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self.info[file_hash] = {
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"hash": file_hash,
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"lastUsed": "",
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"civitai": False,
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"filePath": file_path
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}
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self.save()
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def add_or_update_entry(self, file_path: str, info_dict: dict):
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"""
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Add or update a cache entry for a given file path.
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Ensures both hash and info are updated together.
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"""
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file_hash = info_dict.get("hash")
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if not file_hash:
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raise ValueError("info_dict must contain a 'hash' key")
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self.hash[file_path] = file_hash
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self.info[file_hash] = info_dict
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def remove_entry(self, file_path: str):
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"""
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Remove a cache entry by file path.
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Removes both hash and info if no other file uses the same hash.
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"""
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file_hash = self.hash.get(file_path)
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if file_hash:
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del self.hash[file_path]
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# Only remove info if no other file_path uses this hash
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if file_hash not in self.hash.values():
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self.info.pop(file_hash, None)
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def update_last_used(self, file_path: str, dt: str):
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"""
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Update the 'lastUsed' field for a given file path.
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"""
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file_hash = self.hash.get(file_path)
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if file_hash and file_hash in self.info:
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self.info[file_hash]['lastUsed'] = dt
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# Global cache instance
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cache = SageCache()
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