mirror of
https://github.com/invoke-ai/InvokeAI
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60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
from abc import ABC, abstractmethod
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from typing import Callable, Generic, Optional, TypeVar
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from pydantic import BaseModel
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from invokeai.app.services.shared.pagination import PaginatedResults
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T = TypeVar("T", bound=BaseModel)
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class ItemStorageABC(ABC, Generic[T]):
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_on_changed_callbacks: list[Callable[[T], None]]
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_on_deleted_callbacks: list[Callable[[str], None]]
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def __init__(self) -> None:
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self._on_changed_callbacks = list()
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self._on_deleted_callbacks = list()
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"""Base item storage class"""
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@abstractmethod
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def get(self, item_id: str) -> T:
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"""Gets the item, parsing it into a Pydantic model"""
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pass
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@abstractmethod
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def get_raw(self, item_id: str) -> Optional[str]:
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"""Gets the raw item as a string, skipping Pydantic parsing"""
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pass
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@abstractmethod
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def set(self, item: T) -> None:
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"""Sets the item"""
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pass
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@abstractmethod
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def list(self, page: int = 0, per_page: int = 10) -> PaginatedResults[T]:
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"""Gets a paginated list of items"""
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pass
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@abstractmethod
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def search(self, query: str, page: int = 0, per_page: int = 10) -> PaginatedResults[T]:
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pass
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def on_changed(self, on_changed: Callable[[T], None]) -> None:
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"""Register a callback for when an item is changed"""
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self._on_changed_callbacks.append(on_changed)
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def on_deleted(self, on_deleted: Callable[[str], None]) -> None:
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"""Register a callback for when an item is deleted"""
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self._on_deleted_callbacks.append(on_deleted)
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def _on_changed(self, item: T) -> None:
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for callback in self._on_changed_callbacks:
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callback(item)
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def _on_deleted(self, item_id: str) -> None:
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for callback in self._on_deleted_callbacks:
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callback(item_id)
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