fix: v0.2.3 OPFS数据恢复 + Aria WAL事务边界修复
This commit is contained in:
+5
-6
@@ -5,12 +5,11 @@ All notable changes to MetonaSqlark will be documented in this file.
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## [0.2.3] - 2026-07-27
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### Fixed
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- **RB-Tree fixDelete 完整实现** — 补全标准红黑树删除修复(双黑问题),保证 O(log n) 性能
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- **LSM SSTable 缓存预热** — `init()` 时预加载所有 SSTable 数据到缓存,消除 cache miss 导致的数据丢失
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- **LZ4 往返正确性** — 重写 compress/decompress 为统一 token 格式,压缩解压完全可逆
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### Changed
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- LZ4 压缩测试增加 3 个往返正确性验证用例
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- **RB-Tree fixDelete 完整实现** — 补全标准红黑树删除修复,保证 O(log n)
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- **LSM SSTable 缓存预热** — `init()` 预加载所有 SSTable,消除 cache miss
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- **OPFS 数据恢复** — `open()` 自动从 OPFS 文件加载已有表数据到内存
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- **Aria WAL 事务恢复** — 两阶段恢复:仅回放已提交事务,未提交数据不回放
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- **LZ4 格式修复** — 重写 token 格式,消除中间字面量 token 歧义
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---
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Vendored
+54
-3
@@ -840,8 +840,10 @@ class OPFSEngine {
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await this.memoryCache.open(dbName, version);
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// 获取 OPFS 根目录
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this.root = await navigator.storage.getDirectory();
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// 创建数据库目录
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// 创建/打开数据库目录
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this.tablesDir = await this.root.getDirectoryHandle(dbName, { create: true });
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// 从 OPFS 恢复已有表数据到内存缓存
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await this.loadExistingTables();
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}
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async close() {
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this.root = null;
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@@ -967,6 +969,39 @@ class OPFSEngine {
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return [];
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}
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}
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/** 从 OPFS 加载已有表数据到内存缓存 */
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async loadExistingTables() {
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if (!this.tablesDir)
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return;
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const dir = this.tablesDir;
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for await (const [name] of dir.entries()) {
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if (!name.endsWith('.json'))
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continue;
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const tableName = name.replace('.json', '');
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try {
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const data = await this.readTableData(tableName);
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// 从数据中推断 schema(简化:从第一行提取列信息)
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if (data.length > 0) {
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const firstRow = data[0];
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const columns = {};
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for (const key of Object.keys(firstRow)) {
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const val = firstRow[key];
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const type = typeof val === 'number' ? 'number' :
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typeof val === 'boolean' ? 'boolean' :
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typeof val === 'object' ? 'json' : 'string';
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columns[key] = { type, primaryKey: key === 'id' };
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}
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await this.memoryCache.createTable({ name: tableName, columns });
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for (const row of data) {
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await this.memoryCache.insert(tableName, [row]);
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}
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}
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}
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catch {
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// 单个文件损坏不影响其他表
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}
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}
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}
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/** 从 OPFS 加载表数据到内存缓存 */
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async loadTableIntoMemory(tableName, schema) {
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await this.memoryCache.createTable(schema);
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@@ -3063,8 +3098,23 @@ class AriaEngine {
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await this.loadSchemas();
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// 6. 初始化 LSM(加载 SSTable 元数据)
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await this.lsm.init();
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// 7. WAL 恢复(恢复未刷盘的数据)
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await this.wal.recover((record) => this.applyWALRecord(record));
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// 7. WAL 恢复(两阶段:先扫描事务边界,仅回放已提交事务)
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const committedTxns = new Set();
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const allRecords = [];
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await this.wal.recover((r) => allRecords.push(r));
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// 第一遍:确定已提交事务
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for (const r of allRecords) {
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if (r.type === WALRecordType.COMMIT)
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committedTxns.add(r.txnId);
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if (r.type === WALRecordType.ROLLBACK)
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committedTxns.delete(r.txnId);
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}
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// 第二遍:仅应用 txnId==0(非事务)或已提交事务的数据
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for (const r of allRecords) {
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if (r.txnId === 0 || committedTxns.has(r.txnId)) {
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this.applyWALRecord(r);
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}
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}
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// 8. Checkpoint Manager(BufferPool 暂简化,使用 flush 替代)
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this.checkpointManager = new CheckpointManager(this.lsm, this.wal, { flushAll: async () => { await this.lsm.flush(); } }, this.config.checkpointInterval);
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this.opened = true;
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@@ -3546,6 +3596,7 @@ class AriaEngine {
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case WALRecordType.COMMIT:
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case WALRecordType.ROLLBACK:
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case WALRecordType.BEGIN:
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case WALRecordType.DROP_TABLE:
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break;
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}
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}
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Vendored
+1
-1
File diff suppressed because one or more lines are too long
Vendored
+2
@@ -622,6 +622,8 @@ declare class OPFSEngine implements IStorageEngine {
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private ensureDir;
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private writeTableData;
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private readTableData;
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/** 从 OPFS 加载已有表数据到内存缓存 */
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private loadExistingTables;
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/** 从 OPFS 加载表数据到内存缓存 */
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loadTableIntoMemory(tableName: string, schema: TableSchema): Promise<void>;
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}
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Vendored
+54
-3
@@ -836,8 +836,10 @@ class OPFSEngine {
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await this.memoryCache.open(dbName, version);
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// 获取 OPFS 根目录
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this.root = await navigator.storage.getDirectory();
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// 创建数据库目录
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// 创建/打开数据库目录
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this.tablesDir = await this.root.getDirectoryHandle(dbName, { create: true });
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// 从 OPFS 恢复已有表数据到内存缓存
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await this.loadExistingTables();
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}
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async close() {
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this.root = null;
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@@ -963,6 +965,39 @@ class OPFSEngine {
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return [];
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}
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}
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/** 从 OPFS 加载已有表数据到内存缓存 */
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async loadExistingTables() {
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if (!this.tablesDir)
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return;
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const dir = this.tablesDir;
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for await (const [name] of dir.entries()) {
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if (!name.endsWith('.json'))
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continue;
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const tableName = name.replace('.json', '');
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try {
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const data = await this.readTableData(tableName);
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// 从数据中推断 schema(简化:从第一行提取列信息)
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if (data.length > 0) {
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const firstRow = data[0];
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const columns = {};
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for (const key of Object.keys(firstRow)) {
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const val = firstRow[key];
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const type = typeof val === 'number' ? 'number' :
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typeof val === 'boolean' ? 'boolean' :
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typeof val === 'object' ? 'json' : 'string';
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columns[key] = { type, primaryKey: key === 'id' };
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}
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await this.memoryCache.createTable({ name: tableName, columns });
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for (const row of data) {
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await this.memoryCache.insert(tableName, [row]);
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}
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}
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}
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catch {
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// 单个文件损坏不影响其他表
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}
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}
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}
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/** 从 OPFS 加载表数据到内存缓存 */
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async loadTableIntoMemory(tableName, schema) {
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await this.memoryCache.createTable(schema);
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@@ -3059,8 +3094,23 @@ class AriaEngine {
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await this.loadSchemas();
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// 6. 初始化 LSM(加载 SSTable 元数据)
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await this.lsm.init();
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// 7. WAL 恢复(恢复未刷盘的数据)
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await this.wal.recover((record) => this.applyWALRecord(record));
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// 7. WAL 恢复(两阶段:先扫描事务边界,仅回放已提交事务)
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const committedTxns = new Set();
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const allRecords = [];
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await this.wal.recover((r) => allRecords.push(r));
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// 第一遍:确定已提交事务
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for (const r of allRecords) {
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if (r.type === WALRecordType.COMMIT)
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committedTxns.add(r.txnId);
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if (r.type === WALRecordType.ROLLBACK)
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committedTxns.delete(r.txnId);
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}
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// 第二遍:仅应用 txnId==0(非事务)或已提交事务的数据
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for (const r of allRecords) {
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if (r.txnId === 0 || committedTxns.has(r.txnId)) {
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this.applyWALRecord(r);
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}
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}
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// 8. Checkpoint Manager(BufferPool 暂简化,使用 flush 替代)
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this.checkpointManager = new CheckpointManager(this.lsm, this.wal, { flushAll: async () => { await this.lsm.flush(); } }, this.config.checkpointInterval);
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this.opened = true;
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@@ -3542,6 +3592,7 @@ class AriaEngine {
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case WALRecordType.COMMIT:
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case WALRecordType.ROLLBACK:
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case WALRecordType.BEGIN:
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case WALRecordType.DROP_TABLE:
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break;
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}
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}
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Vendored
+1
-1
File diff suppressed because one or more lines are too long
Vendored
+54
-3
@@ -842,8 +842,10 @@
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await this.memoryCache.open(dbName, version);
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// 获取 OPFS 根目录
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this.root = await navigator.storage.getDirectory();
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// 创建数据库目录
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// 创建/打开数据库目录
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this.tablesDir = await this.root.getDirectoryHandle(dbName, { create: true });
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// 从 OPFS 恢复已有表数据到内存缓存
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await this.loadExistingTables();
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}
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async close() {
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this.root = null;
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@@ -969,6 +971,39 @@
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return [];
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}
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}
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/** 从 OPFS 加载已有表数据到内存缓存 */
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async loadExistingTables() {
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if (!this.tablesDir)
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return;
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const dir = this.tablesDir;
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for await (const [name] of dir.entries()) {
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if (!name.endsWith('.json'))
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continue;
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const tableName = name.replace('.json', '');
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try {
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const data = await this.readTableData(tableName);
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// 从数据中推断 schema(简化:从第一行提取列信息)
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if (data.length > 0) {
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const firstRow = data[0];
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const columns = {};
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for (const key of Object.keys(firstRow)) {
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const val = firstRow[key];
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const type = typeof val === 'number' ? 'number' :
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typeof val === 'boolean' ? 'boolean' :
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typeof val === 'object' ? 'json' : 'string';
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columns[key] = { type, primaryKey: key === 'id' };
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}
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await this.memoryCache.createTable({ name: tableName, columns });
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for (const row of data) {
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await this.memoryCache.insert(tableName, [row]);
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}
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}
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}
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catch {
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// 单个文件损坏不影响其他表
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}
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}
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}
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/** 从 OPFS 加载表数据到内存缓存 */
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async loadTableIntoMemory(tableName, schema) {
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await this.memoryCache.createTable(schema);
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@@ -3065,8 +3100,23 @@
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await this.loadSchemas();
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// 6. 初始化 LSM(加载 SSTable 元数据)
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await this.lsm.init();
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// 7. WAL 恢复(恢复未刷盘的数据)
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await this.wal.recover((record) => this.applyWALRecord(record));
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// 7. WAL 恢复(两阶段:先扫描事务边界,仅回放已提交事务)
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const committedTxns = new Set();
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const allRecords = [];
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await this.wal.recover((r) => allRecords.push(r));
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// 第一遍:确定已提交事务
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for (const r of allRecords) {
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if (r.type === WALRecordType.COMMIT)
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committedTxns.add(r.txnId);
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if (r.type === WALRecordType.ROLLBACK)
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committedTxns.delete(r.txnId);
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}
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// 第二遍:仅应用 txnId==0(非事务)或已提交事务的数据
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for (const r of allRecords) {
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if (r.txnId === 0 || committedTxns.has(r.txnId)) {
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this.applyWALRecord(r);
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}
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}
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// 8. Checkpoint Manager(BufferPool 暂简化,使用 flush 替代)
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this.checkpointManager = new CheckpointManager(this.lsm, this.wal, { flushAll: async () => { await this.lsm.flush(); } }, this.config.checkpointInterval);
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this.opened = true;
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@@ -3548,6 +3598,7 @@
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case WALRecordType.COMMIT:
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case WALRecordType.ROLLBACK:
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case WALRecordType.BEGIN:
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case WALRecordType.DROP_TABLE:
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break;
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}
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}
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Vendored
+1
-1
File diff suppressed because one or more lines are too long
Vendored
+1
-1
File diff suppressed because one or more lines are too long
@@ -133,8 +133,21 @@ export class AriaEngine implements IStorageEngine {
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// 6. 初始化 LSM(加载 SSTable 元数据)
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await this.lsm.init();
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// 7. WAL 恢复(恢复未刷盘的数据)
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await this.wal.recover((record) => this.applyWALRecord(record));
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// 7. WAL 恢复(两阶段:先扫描事务边界,仅回放已提交事务)
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const committedTxns = new Set<number>();
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const allRecords: WALRecord[] = [];
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await this.wal.recover((r) => allRecords.push(r));
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// 第一遍:确定已提交事务
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for (const r of allRecords) {
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if (r.type === WALRecordType.COMMIT) committedTxns.add(r.txnId);
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if (r.type === WALRecordType.ROLLBACK) committedTxns.delete(r.txnId);
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}
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// 第二遍:仅应用 txnId==0(非事务)或已提交事务的数据
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for (const r of allRecords) {
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if (r.txnId === 0 || committedTxns.has(r.txnId)) {
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this.applyWALRecord(r);
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}
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}
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// 8. Checkpoint Manager(BufferPool 暂简化,使用 flush 替代)
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this.checkpointManager = new CheckpointManager(
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@@ -668,6 +681,7 @@ export class AriaEngine implements IStorageEngine {
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case WALRecordType.COMMIT:
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case WALRecordType.ROLLBACK:
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case WALRecordType.BEGIN:
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case WALRecordType.DROP_TABLE:
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break;
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}
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}
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+35
-1
@@ -34,8 +34,11 @@ export class OPFSEngine implements IStorageEngine {
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// 获取 OPFS 根目录
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this.root = await navigator.storage.getDirectory();
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|
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// 创建数据库目录
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// 创建/打开数据库目录
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this.tablesDir = await this.root.getDirectoryHandle(dbName, { create: true });
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// 从 OPFS 恢复已有表数据到内存缓存
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await this.loadExistingTables();
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}
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async close(): Promise<void> {
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@@ -180,6 +183,37 @@ export class OPFSEngine implements IStorageEngine {
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}
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}
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/** 从 OPFS 加载已有表数据到内存缓存 */
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private async loadExistingTables(): Promise<void> {
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if (!this.tablesDir) return;
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const dir = this.tablesDir as any;
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for await (const [name] of dir.entries()) {
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if (!name.endsWith('.json')) continue;
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const tableName = name.replace('.json', '');
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try {
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const data = await this.readTableData(tableName);
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// 从数据中推断 schema(简化:从第一行提取列信息)
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if (data.length > 0) {
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const firstRow = data[0];
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const columns: Record<string, any> = {};
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for (const key of Object.keys(firstRow)) {
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const val = firstRow[key];
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const type = typeof val === 'number' ? 'number' :
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typeof val === 'boolean' ? 'boolean' :
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typeof val === 'object' ? 'json' : 'string';
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columns[key] = { type, primaryKey: key === 'id' };
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}
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await this.memoryCache.createTable({ name: tableName, columns });
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for (const row of data) {
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await this.memoryCache.insert(tableName, [row]);
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}
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}
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} catch {
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// 单个文件损坏不影响其他表
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}
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}
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}
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/** 从 OPFS 加载表数据到内存缓存 */
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async loadTableIntoMemory(tableName: string, schema: TableSchema): Promise<void> {
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await this.memoryCache.createTable(schema);
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|
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Reference in New Issue
Block a user