Jaco Greeff
e1135a665b
* Start of trie-db re-implementation * WIP commit * More WIP * WIP, seems complete, untested * Ported trie-db operational * Add Ethereum trie tests * Use u8aConcat to construct u8a * Basic RocksDb interface * Combine engines into DB, expand tests * Update Trie with transaction wrapper * LevelDb (sync) interface * Remove unused (for now) package (compatibility) * trie-d -> trie-db-old, trie-db-ext -> trie-db * Version bump * Skip old trie tests (package to be removed) * Skip tests (fixed) * Remove non-used RocksDb spec * Skip FileFlat tests (deprecated?)
55 lines
1.1 KiB
TypeScript
55 lines
1.1 KiB
TypeScript
// Copyright 2017-2018 @polkadot/db authors & contributors
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// This software may be modified and distributed under the terms
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// of the ISC license. See the LICENSE file for details.
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import { BaseDb, ProgressCb } from '../types';
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// import logger from '@polkadot/util/logger';
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// import u8aToHex from '@polkadot/util/u8a/toHex';
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type Storage = {
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[index: string]: Uint8Array
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};
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// const l = logger('db/memory');
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export default class MemoryDb implements BaseDb {
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private storage: Storage;
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constructor () {
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this.storage = {};
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}
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close (): void {
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// noop
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}
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open (): void {
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// noop
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}
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maintain (fn: ProgressCb): void {
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fn({
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isCompleted: true,
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keys: Object.keys(this.storage).length,
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percent: 100
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});
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}
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del (key: Uint8Array): void {
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delete this.storage[key.toString()];
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}
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get (key: Uint8Array): Uint8Array | null {
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// l.debug(() => ['get', u8aToHex(key)]);
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return this.storage[key.toString()] || null;
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}
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put (key: Uint8Array, value: Uint8Array): void {
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// l.debug(() => ['put', u8aToHex(key), u8aToHex(value)]);
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this.storage[key.toString()] = value;
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}
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}
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