mirror of
https://github.com/invoke-ai/InvokeAI.git
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127 lines
4.4 KiB
Python
127 lines
4.4 KiB
Python
from collections import OrderedDict
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from dataclasses import dataclass, field
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from threading import Lock
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from typing import Optional, Union
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from invokeai.app.invocations.baseinvocation import BaseInvocation, BaseInvocationOutput
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from invokeai.app.services.invocation_cache.invocation_cache_base import InvocationCacheBase
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from invokeai.app.services.invocation_cache.invocation_cache_common import InvocationCacheStatus
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from invokeai.app.services.invoker import Invoker
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@dataclass(order=True)
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class CachedItem:
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invocation_output: BaseInvocationOutput = field(compare=False)
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invocation_output_json: str = field(compare=False)
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class MemoryInvocationCache(InvocationCacheBase):
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_cache: OrderedDict[Union[int, str], CachedItem]
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_max_cache_size: int
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_disabled: bool
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_hits: int
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_misses: int
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_invoker: Invoker
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_lock: Lock
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def __init__(self, max_cache_size: int = 0) -> None:
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self._cache = OrderedDict()
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self._max_cache_size = max_cache_size
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self._disabled = False
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self._hits = 0
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self._misses = 0
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self._lock = Lock()
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def start(self, invoker: Invoker) -> None:
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self._invoker = invoker
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if self._max_cache_size == 0:
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return
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self._invoker.services.images.on_deleted(self._delete_by_match)
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self._invoker.services.latents.on_deleted(self._delete_by_match)
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def get(self, key: Union[int, str]) -> Optional[BaseInvocationOutput]:
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with self._lock:
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if self._max_cache_size == 0 or self._disabled:
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return None
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item = self._cache.get(key, None)
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if item is not None:
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self._hits += 1
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self._cache.move_to_end(key)
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return item.invocation_output
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self._misses += 1
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return None
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def save(self, key: Union[int, str], invocation_output: BaseInvocationOutput) -> None:
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with self._lock:
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if self._max_cache_size == 0 or self._disabled or key in self._cache:
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return
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# If the cache is full, we need to remove the least used
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number_to_delete = len(self._cache) + 1 - self._max_cache_size
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self._delete_oldest_access(number_to_delete)
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self._cache[key] = CachedItem(invocation_output, invocation_output.json())
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def _delete_oldest_access(self, number_to_delete: int) -> None:
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number_to_delete = min(number_to_delete, len(self._cache))
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for _ in range(number_to_delete):
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self._cache.popitem(last=False)
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def _delete(self, key: Union[int, str]) -> None:
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if self._max_cache_size == 0:
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return
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if key in self._cache:
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del self._cache[key]
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def delete(self, key: Union[int, str]) -> None:
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with self._lock:
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return self._delete(key)
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def clear(self, *args, **kwargs) -> None:
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with self._lock:
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if self._max_cache_size == 0:
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return
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self._cache.clear()
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self._misses = 0
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self._hits = 0
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@staticmethod
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def create_key(invocation: BaseInvocation) -> int:
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return hash(invocation.json(exclude={"id"}))
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def disable(self) -> None:
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with self._lock:
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if self._max_cache_size == 0:
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return
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self._disabled = True
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def enable(self) -> None:
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with self._lock:
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if self._max_cache_size == 0:
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return
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self._disabled = False
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def get_status(self) -> InvocationCacheStatus:
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with self._lock:
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return InvocationCacheStatus(
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hits=self._hits,
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misses=self._misses,
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enabled=not self._disabled and self._max_cache_size > 0,
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size=len(self._cache),
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max_size=self._max_cache_size,
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)
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def _delete_by_match(self, to_match: str) -> None:
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with self._lock:
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if self._max_cache_size == 0:
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return
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keys_to_delete = set()
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for key, cached_item in self._cache.items():
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if to_match in cached_item.invocation_output_json:
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keys_to_delete.add(key)
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if not keys_to_delete:
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return
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for key in keys_to_delete:
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self._delete(key)
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self._invoker.services.logger.debug(
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f"Deleted {len(keys_to_delete)} cached invocation outputs for {to_match}"
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)
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