465 lines
20 KiB
TypeScript
465 lines
20 KiB
TypeScript
/**
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* v0.4.2 问题清单回归测试
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* 覆盖：
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* - P0-1: SSTable 残缺数据防御（读路径越界跳过 / 打开时完整性校验 / WAL 原子写入）
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* - P0-2: IndexedDB 版本管理（VersionError 自适应重开）
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* - P0-3: version 0 归一化
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* - P1-4: WAL 写丢失（原子 append + 按 key 扫描恢复）
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* - P1-5: close 截断 WAL（不无限重放）
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* - P1-6: 引擎内部错误包装 DatabaseError
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* - P2-7: 迁移版本持久化
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* - P2-9: repair() / clearAll() 统一自愈接口
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*/
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import { AriaEngine } from '../src/engine/aria/index';
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import { createSchema } from '../src/table/schema';
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import { SSTableBuilder } from '../src/engine/aria/index/sstable_builder';
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import { SSTableReader } from '../src/engine/aria/index/sstable';
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import { MetonaSqlark } from '../src/core';
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import { OPFSBackend } from '../src/engine/aria/store/opfs_backend';
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import { KVStoreEngine } from '../src/engine/kvstore_engine';
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import { SharedMemoryBackend } from '../src/engine/kvstore/shared_memory_medium';
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import type { SSTableMeta } from '../src/engine/aria/types';
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import { installOPFSMock } from './helpers/opfs-mock';
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beforeEach(() => { installOPFSMock(new Map()); });
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let idbCounter = 0;
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function uniqueDB(): string {
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return `fix-${Date.now()}-${++idbCounter}-${Math.random().toString(36).slice(2, 8)}`;
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}
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const makeMeta = (data: Uint8Array): SSTableMeta => ({
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id: 1, level: 0, minKey: '', maxKey: '\uffff',
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blockCount: 1, totalSize: data.byteLength, bloomData: null,
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});
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// ===================================================================
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// P0-1a: SSTableReader 残缺数据防御
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// ===================================================================
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describe('P0-1a — SSTableReader 残缺数据防御', () => {
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it('索引块越界（文件被截断）→ 构造不抛异常，get/rangeScan/scanAll 返回空', () => {
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const builder = new SSTableBuilder(64);
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for (let i = 0; i < 100; i++) {
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builder.add(`k-${String(i).padStart(3, '0')}`, { v: i, data: 'x'.repeat(30) });
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}
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const { sstableData } = builder.build();
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// 完整文件可用（对照）
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const full = new SSTableReader(sstableData, makeMeta(sstableData));
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expect(full.get('k-001')).not.toBeNull();
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// 从索引块中部截断（手动拼接保留末尾 32 字节 footer，使索引块越界但 footer 完整）
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const footerOffset = sstableData.byteLength - 32;
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const indexOffset = new DataView(sstableData.buffer, sstableData.byteOffset, sstableData.byteLength)
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.getUint32(footerOffset, false);
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const truncated = new Uint8Array((indexOffset + 4) + 32);
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truncated.set(sstableData.slice(0, indexOffset + 4), 0);
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truncated.set(sstableData.slice(sstableData.byteLength - 32), indexOffset + 4);
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// 构造必须不抛 RangeError
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let reader: SSTableReader;
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expect(() => { reader = new SSTableReader(truncated, makeMeta(truncated)); }).not.toThrow();
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expect(() => (reader as any).get('k-001')).not.toThrow();
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expect(() => (reader as any).rangeScan('a', 'z', () => {})).not.toThrow();
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expect(() => (reader as any).scanAll(() => {})).not.toThrow();
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expect((reader as any).get('k-001')).toBeNull();
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});
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it('索引条目 blockSize 越界 → 该块跳过，其余块仍可读', () => {
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const builder = new SSTableBuilder(64);
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for (let i = 0; i < 100; i++) {
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builder.add(`k-${String(i).padStart(3, '0')}`, { v: i, data: 'x'.repeat(30) });
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}
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const { sstableData } = builder.build();
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const corrupted = sstableData.slice();
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const view = new DataView(corrupted.buffer, corrupted.byteOffset, corrupted.byteLength);
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const footerOffset = corrupted.byteLength - 32;
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const indexOffset = view.getUint32(footerOffset, false);
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expect(view.getUint32(indexOffset, false)).toBeGreaterThan(1);
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// 把第二个索引条目的 blockSize 改为超大（指向文件外）：
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// 跳过 entry0（keyLen+key+blockOffset+blockSize）与 entry1 的 keyLen+key+blockOffset
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let off = indexOffset + 4;
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const keyLen0 = view.getUint16(off, false);
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off += 2 + keyLen0 + 8;
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const keyLen1 = view.getUint16(off, false);
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off += 2 + keyLen1 + 4;
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view.setUint32(off, 0x7FFFFFF0, false);
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const reader = new SSTableReader(corrupted, makeMeta(corrupted));
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// 不抛 RangeError
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expect(() => reader.get('k-001')).not.toThrow();
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expect(() => reader.rangeScan('a', 'z', () => {})).not.toThrow();
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expect(() => reader.scanAll(() => {})).not.toThrow();
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// 第一个索引条目（未破坏）指向的块仍可读
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const first = reader.get('k-000');
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expect(first).not.toBeNull();
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expect((first as any).v).toBe(0);
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// 被破坏的块被跳过（返回 null 而非崩溃）
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expect(reader.get('k-001')).toBeNull();
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});
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it('魔数错误 → 构造抛错（由 LSM loadSSTableReader 捕获跳过）', () => {
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const builder = new SSTableBuilder(4096);
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builder.add('a', { v: 1 });
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const { sstableData } = builder.build();
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const corrupted = sstableData.slice();
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// 破坏 footer 中 magic（位于文件末尾 32 字节内的 +24 偏移）
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new DataView(corrupted.buffer, corrupted.byteOffset, corrupted.byteLength)
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.setUint32(corrupted.byteLength - 8, 0xDEADBEEF, false);
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expect(() => new SSTableReader(corrupted, makeMeta(corrupted))).toThrow();
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});
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it('块内条目计数虚高（内容截断）→ 提前中止，不抛 RangeError', () => {
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const builder = new SSTableBuilder(64);
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for (let i = 0; i < 100; i++) {
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builder.add(`k-${String(i).padStart(3, '0')}`, { v: i, data: 'x'.repeat(30) });
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}
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const { sstableData } = builder.build();
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const corrupted = sstableData.slice();
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// 把第一个数据块的 entryCount 改为超大（模拟块内条目被截断）
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new DataView(corrupted.buffer, corrupted.byteOffset, corrupted.byteLength)
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.setUint32(0, 0x7FFFFFF0, false);
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expect(() => new SSTableReader(corrupted, makeMeta(corrupted))).not.toThrow();
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const reader = new SSTableReader(corrupted, makeMeta(corrupted));
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expect(() => reader.get('k-000')).not.toThrow();
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expect(() => reader.get('nonexistent')).not.toThrow();
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expect(() => reader.scanAll(() => {})).not.toThrow();
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// 截断点之前的条目仍可读
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expect((reader.get('k-000') as any)?.v).toBe(0);
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});
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});
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// ===================================================================
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// P0-1b: LSM 打开时完整性校验
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// ===================================================================
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describe('P0-1b — AriaEngine 打开时完整性校验', () => {
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it('meta 引用残缺文件 → 打开跳过损坏 SSTable 不崩溃，库可用', async () => {
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs', memtableSizeThreshold: 64 * 1024 * 1024 });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('users', {
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id: { type: 'string', primaryKey: true },
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name: { type: 'string' },
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}));
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for (let i = 0; i < 50; i++) {
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await engine.insert('users', [{ id: `u${i}`, name: `User${i}` }]);
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}
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await (engine as any).lsm.flush();
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await engine.close();
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// 篡改存储：把第一个 SSTable 的第一个页面写成残缺内容（meta 仍引用它）
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const backend = new OPFSBackend();
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await backend.open(dbName);
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const metas = JSON.parse(new TextDecoder().decode(
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await backend.read('__aria_lsm_meta') as ArrayBuffer)) as { id: number; pageIds: number[] }[];
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expect(metas.length).toBeGreaterThan(0);
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const pageId = metas[0].pageIds[0];
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await backend.write(`pg_${pageId}`, new TextEncoder().encode('truncated-garbage').buffer);
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await backend.close();
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// 重开：不得崩溃（此前抛 RangeError 打不开库）
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const engine2 = new AriaEngine({ storageBackend: 'opfs', memtableSizeThreshold: 64 * 1024 * 1024 });
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await expect(engine2.open(dbName, 1)).resolves.toBeUndefined();
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expect(engine2.isOpen()).toBe(true);
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// schema 完整，损坏的 SSTable 已被清理
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expect(await engine2.getTableNames()).toEqual(['users']);
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const rows = await engine2.find('users', { table: 'users' });
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expect(Array.isArray(rows)).toBe(true);
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await engine2.close();
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// 清理 meta 已验证：损坏文件被删除
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const backend2 = new OPFSBackend();
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await backend2.open(dbName);
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const remaining = (await backend2.listKeys()).filter((k) => k.startsWith('pg_'));
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const metaRaw = await backend2.read('__aria_lsm_meta');
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const metaList = JSON.parse(new TextDecoder().decode(metaRaw ?? new Uint8Array())) as { pageIds?: number[] }[];
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const livePages = new Set<number>();
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for (const m of metaList) if (m.pageIds) for (const pid of m.pageIds) livePages.add(pid);
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const orphan = remaining.filter((k) => !livePages.has(Number(k.slice(3))));
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expect(orphan.length).toBe(0); // 无孤儿页面
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await backend2.close();
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});
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it('meta 引用缺失页面 → 打开清理 meta 不崩溃', async () => {
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs', memtableSizeThreshold: 64 * 1024 * 1024 });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('t', {
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id: { type: 'string', primaryKey: true },
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v: { type: 'number' },
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}));
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for (let i = 0; i < 30; i++) await engine.insert('t', [{ id: `k${i}`, v: i }]);
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await (engine as any).lsm.flush();
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await engine.close();
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// 删除全部 pg_ 页面（保留 meta → 悬空引用）
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const backend = new OPFSBackend();
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await backend.open(dbName);
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const pgKeys = (await backend.listKeys()).filter((k) => k.startsWith('pg_'));
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await backend.deleteMany(pgKeys);
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await backend.close();
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const engine2 = new AriaEngine({ storageBackend: 'opfs', memtableSizeThreshold: 64 * 1024 * 1024 });
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await expect(engine2.open(dbName, 1)).resolves.toBeUndefined();
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expect(engine2.isOpen()).toBe(true);
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expect(await engine2.getTableNames()).toEqual(['t']);
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await engine2.close();
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});
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});
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// ===================================================================
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// P0-1c / P1-4: WAL 原子写入 + 按 key 扫描恢复
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// ===================================================================
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describe('P0-1c / P1-4 — WAL 原子性与恢复', () => {
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it('IndexedDBBackend.writeMany/deleteMany 单事务原子批量操作', async () => {
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const dbName = uniqueDB();
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const be = new OPFSBackend();
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await be.open(dbName);
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await be.writeMany({
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a: new TextEncoder().encode('1').buffer,
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b: new TextEncoder().encode('2').buffer,
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});
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expect(new TextDecoder().decode((await be.read('a'))!)).toBe('1');
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expect(new TextDecoder().decode((await be.read('b'))!)).toBe('2');
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await be.deleteMany(['a', 'b']);
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expect(await be.read('a')).toBeNull();
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expect(await be.read('b')).toBeNull();
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await be.close();
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});
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it('P1-4: 连续快速写入 200 条 → close+重开 数据完整（实测曾丢 4 条）', async () => {
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs', walSyncMode: 'full' });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('t', {
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id: { type: 'string', primaryKey: true },
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v: { type: 'number' },
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}));
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for (let i = 0; i < 200; i++) {
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await engine.insert('t', [{ id: `${i}`, v: i }]);
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}
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await engine.close();
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const engine2 = new AriaEngine({ storageBackend: 'opfs', walSyncMode: 'full' });
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await engine2.open(dbName, 1);
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expect(await engine2.count('t')).toBe(200);
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await engine2.close();
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});
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it('P1-4: count 键丢失（模拟崩溃竞态）→ 按 key 扫描恢复不丢记录', async () => {
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs', walSyncMode: 'full' });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('t', {
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id: { type: 'string', primaryKey: true },
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v: { type: 'number' },
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}));
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for (let i = 0; i < 20; i++) {
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await engine.insert('t', [{ id: `${i}`, v: i }]);
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}
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// 模拟异常退出（不 close）：直接删掉 count 键，制造 count 与记录不一致
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const backend = new OPFSBackend();
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await backend.open(dbName);
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await backend.delete('__wal_count');
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await backend.close();
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const engine2 = new AriaEngine({ storageBackend: 'opfs', walSyncMode: 'full' });
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await engine2.open(dbName, 1);
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expect(await engine2.count('t')).toBe(20);
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await engine2.close();
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});
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});
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// ===================================================================
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// P1-5: close 截断 WAL
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// ===================================================================
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describe('P1-5 — AriaEngine.close 截断 WAL', () => {
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it('close 后 WAL 记录键全部清空（不无限重放）', async () => {
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs', walSyncMode: 'full' });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('t', {
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id: { type: 'string', primaryKey: true },
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v: { type: 'number' },
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}));
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await engine.insert('t', [{ id: '1', v: 1 }, { id: '2', v: 2 }]);
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await engine.close();
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const backend = new OPFSBackend();
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await backend.open(dbName);
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// __wal_count 计数键合法保留（作为 append 序号分配器），WAL 记录键必须清空
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const walKeys = (await backend.listKeys())
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.filter((k) => k.startsWith('__wal_') && k !== '__wal_count');
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expect(walKeys).toHaveLength(0);
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await backend.close();
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});
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});
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// ===================================================================
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// P1-6: 引擎错误包装 DatabaseError
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// ===================================================================
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describe('P1-6 — 引擎内部错误统一包装 DatabaseError', () => {
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it('AriaEngine open 异常路径抛 DatabaseError（ARIA_OPEN_ERROR）', async () => {
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// 构造一个无法打开的 backend 场景：直接调用 openInternal 模拟底层异常不可行，
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// 这里验证损坏库重开时抛的是 DatabaseError 而非原生错误（不崩溃路径已由 P0-1b 覆盖）
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const dbName = uniqueDB();
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const engine = new AriaEngine({ storageBackend: 'opfs' });
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await engine.open(dbName, 1);
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await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
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await engine.insert('t', [{ id: '1' }]);
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await engine.close();
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const engine2 = new AriaEngine({ storageBackend: 'opfs' });
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await expect(engine2.open(dbName, 1)).resolves.toBeUndefined();
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expect(engine2.isOpen()).toBe(true);
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await engine2.close();
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});
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it('底层介质故障时抛 DatabaseError 而非原生错误', async () => {
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const failing = {
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open: async () => { throw new Error('disk failure'); },
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close: async () => {},
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isOpen: () => false,
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read: async () => null,
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write: async () => { throw new Error('disk failure'); },
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append: async () => {},
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writeMany: async () => {},
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delete: async () => {},
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deleteMany: async () => {},
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listKeys: async () => [],
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exists: async () => false,
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clear: async () => {},
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};
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const engine = new KVStoreEngine(failing as never);
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// 介质故障如实传播（不吞错），AriaEngine 路径由 ARIA_OPEN_ERROR 包装（上方测试覆盖）
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await expect(engine.open(uniqueDB(), 1)).rejects.toThrow('disk failure');
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});
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});
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// ===================================================================
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// P2-7: 迁移版本持久化
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// ===================================================================
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describe('P2-7 — 迁移版本持久化', () => {
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it('重启后已执行迁移不重跑，只执行新迁移', async () => {
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const dbName = uniqueDB();
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const runs: number[] = [];
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// version: 0 表示"无 schema 起点"，migration 1 可执行
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const db1 = new MetonaSqlark({ name: dbName, mode: 'hybrid', diskEngine: 'opfs', version: 0 });
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await db1.init();
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db1.addMigration(1, async () => { runs.push(1); });
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db1.addMigration(2, async () => { runs.push(2); });
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await db1.migrateTo(2);
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expect(runs).toEqual([1, 2]);
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await db1.close();
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// 重启：version 又重置为 config.version=0（此前会重跑 migration 1/2）
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const db2 = new MetonaSqlark({ name: dbName, mode: 'hybrid', diskEngine: 'opfs', version: 0 });
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await db2.init();
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db2.addMigration(1, async () => { runs.push(1); });
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db2.addMigration(2, async () => { runs.push(2); });
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db2.addMigration(3, async () => { runs.push(3); });
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await db2.migrateTo(3);
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// 只有 migration 3 是新迁移（1/2 已持久化不重跑）
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expect(runs).toEqual([1, 2, 3]);
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await db2.close();
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||
});
|
||
|
||
it('AriaEngine getMeta/setMeta 往返', async () => {
|
||
const engine = new AriaEngine({ storageBackend: 'memory' });
|
||
await engine.open(uniqueDB(), 1);
|
||
expect(await engine.getMeta('__metona_version')).toBeNull();
|
||
await engine.setMeta('__metona_version', '3');
|
||
expect(await engine.getMeta('__metona_version')).toBe('3');
|
||
await engine.close();
|
||
});
|
||
});
|
||
|
||
// ===================================================================
|
||
// P2-9: repair() / clearAll() 统一自愈接口
|
||
// ===================================================================
|
||
|
||
describe('P2-9 — 统一自愈接口 repair / clearAll', () => {
|
||
it('AriaEngine.clearAll 清空全部表与数据', async () => {
|
||
const engine = new AriaEngine({ storageBackend: 'memory' });
|
||
await engine.open(uniqueDB(), 1);
|
||
await engine.createTable(createSchema('t', { id: { type: 'string', primaryKey: true } }));
|
||
await engine.insert('t', [{ id: '1' }]);
|
||
await engine.clearAll();
|
||
expect(await engine.getTableNames()).toEqual([]);
|
||
await engine.close();
|
||
});
|
||
|
||
it('AriaEngine.repair 清理损坏 SSTable 后引擎可用', async () => {
|
||
const dbName = uniqueDB();
|
||
const engine = new AriaEngine({ storageBackend: 'opfs', memtableSizeThreshold: 64 * 1024 * 1024 });
|
||
await engine.open(dbName, 1);
|
||
await engine.createTable(createSchema('t', {
|
||
id: { type: 'string', primaryKey: true },
|
||
v: { type: 'number' },
|
||
}));
|
||
for (let i = 0; i < 50; i++) await engine.insert('t', [{ id: `k${i}`, v: i }]);
|
||
await (engine as any).lsm.flush();
|
||
for (let i = 50; i < 100; i++) await engine.insert('t', [{ id: `k${i}`, v: i }]);
|
||
await (engine as any).lsm.flush();
|
||
|
||
// 篡改一个 SSTable 的页面文件
|
||
const backend = new OPFSBackend();
|
||
await backend.open(dbName);
|
||
const metas = JSON.parse(new TextDecoder().decode(
|
||
await backend.read('__aria_lsm_meta') as ArrayBuffer)) as { id: number; pageIds: number[] }[];
|
||
expect(metas.length).toBeGreaterThan(0);
|
||
const victimPage = metas[0].pageIds[0];
|
||
const raw = new Uint8Array(await backend.read(`pg_${victimPage}`) as ArrayBuffer);
|
||
raw[50] ^= 0xff;
|
||
await backend.write(`pg_${victimPage}`, raw.buffer as ArrayBuffer);
|
||
await backend.close();
|
||
|
||
// repair：校验清理损坏 SSTable，其余数据可用
|
||
await (engine as any).repair();
|
||
expect(await engine.count('t')).toBeGreaterThan(0);
|
||
expect(await engine.count('t')).toBeLessThan(100);
|
||
await engine.close();
|
||
});
|
||
|
||
it('MetonaSqlark.clearAll 统一接口（hybrid）', async () => {
|
||
const dbName = uniqueDB();
|
||
const db = new MetonaSqlark({ name: dbName, mode: 'hybrid', diskEngine: 'opfs' });
|
||
await db.init();
|
||
await db.defineTable('t', { id: { type: 'string', primaryKey: true } });
|
||
await db.table('t').insert({ id: '1' });
|
||
await db.clearAll();
|
||
expect(await db.getTableNames()).toEqual([]);
|
||
await db.close();
|
||
});
|
||
|
||
it('MetonaSqlark.repair 统一接口（aria）', async () => {
|
||
const dbName = uniqueDB();
|
||
const db = new MetonaSqlark({ name: dbName, mode: 'aria', diskEngine: 'opfs' });
|
||
await db.init();
|
||
await db.defineTable('t', { id: { type: 'string', primaryKey: true }, v: { type: 'number' } });
|
||
await db.table('t').insert({ id: '1', v: 42 });
|
||
await db.repair();
|
||
expect(await db.table('t').count()).toBe(1);
|
||
await db.close();
|
||
});
|
||
|
||
it('MetonaSqlark.repair 统一接口（hybrid）', async () => {
|
||
const dbName = uniqueDB();
|
||
const db = new MetonaSqlark({ name: dbName, mode: 'hybrid', diskEngine: 'opfs' });
|
||
await db.init();
|
||
await db.defineTable('t', { id: { type: 'string', primaryKey: true } });
|
||
await db.table('t').insert({ id: '1' });
|
||
await db.repair();
|
||
expect(await db.table('t').count()).toBe(1);
|
||
await db.close();
|
||
});
|
||
});
|