88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
import os
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from dataclasses import dataclass
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from typing import Any, final
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from lightrag.base import (
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BaseKVStorage,
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)
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from lightrag.utils import (
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load_json,
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logger,
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write_json,
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)
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from .shared_storage import (
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get_namespace_data,
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get_storage_lock,
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try_initialize_namespace,
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)
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@final
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@dataclass
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class JsonKVStorage(BaseKVStorage):
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def __post_init__(self):
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working_dir = self.global_config["working_dir"]
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self._file_name = os.path.join(working_dir, f"kv_store_{self.namespace}.json")
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self._storage_lock = get_storage_lock()
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self._data = None
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async def initialize(self):
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"""Initialize storage data"""
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# check need_init must before get_namespace_data
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need_init = try_initialize_namespace(self.namespace)
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self._data = await get_namespace_data(self.namespace)
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if need_init:
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loaded_data = load_json(self._file_name) or {}
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async with self._storage_lock:
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self._data.update(loaded_data)
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logger.info(f"Load KV {self.namespace} with {len(loaded_data)} data")
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async def index_done_callback(self) -> None:
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async with self._storage_lock:
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data_dict = (
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dict(self._data) if hasattr(self._data, "_getvalue") else self._data
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)
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write_json(data_dict, self._file_name)
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async def get_all(self) -> dict[str, Any]:
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"""Get all data from storage
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Returns:
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Dictionary containing all stored data
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"""
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async with self._storage_lock:
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return dict(self._data)
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async def get_by_id(self, id: str) -> dict[str, Any] | None:
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async with self._storage_lock:
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return self._data.get(id)
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async def get_by_ids(self, ids: list[str]) -> list[dict[str, Any]]:
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async with self._storage_lock:
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return [
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(
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{k: v for k, v in self._data[id].items()}
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if self._data.get(id, None)
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else None
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)
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for id in ids
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]
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async def filter_keys(self, keys: set[str]) -> set[str]:
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async with self._storage_lock:
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return set(keys) - set(self._data.keys())
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async def upsert(self, data: dict[str, dict[str, Any]]) -> None:
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logger.info(f"Inserting {len(data)} to {self.namespace}")
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if not data:
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return
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async with self._storage_lock:
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left_data = {k: v for k, v in data.items() if k not in self._data}
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self._data.update(left_data)
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async def delete(self, ids: list[str]) -> None:
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async with self._storage_lock:
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for doc_id in ids:
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self._data.pop(doc_id, None)
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await self.index_done_callback()
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