@ringo380/innodb-utils

InnoDB file analysis toolkit compiled to WebAssembly.

Installation

npm install @ringo380/innodb-utils

Usage

With a bundler (Webpack 5+, Vite, Rollup with WASM plugin):

import { get_tablespace_info, validate_checksums } from '@ringo380/innodb-utils';

const fileBuffer = await fetch('table.ibd').then(r => r.arrayBuffer());
const data = new Uint8Array(fileBuffer);

const info = JSON.parse(get_tablespace_info(data));
console.log(`Page size: ${info.page_size}, Pages: ${info.page_count}`);

const checksums = JSON.parse(validate_checksums(data));
console.log(`Valid: ${checksums.valid_pages}/${checksums.total_pages}`);

The WASM module is automatically initialized by the bundler — no init() call needed.

Available Functions

All functions accept a Uint8Array of the file contents and return a JSON string.

• get_tablespace_info(data) - Basic tablespace metadata
• parse_tablespace(data) - Page-by-page header details
• analyze_pages(data, page_number) - Detailed page analysis (pass -1n for all pages)
• validate_checksums(data) - Checksum validation for all pages
• extract_sdi(data) - Extract SDI metadata from MySQL 8.0+ tablespaces
• hex_dump_page(data, page_number, offset, length) - Hex dump of page bytes
• assess_recovery(data) - Recovery assessment
• diff_tablespaces(data1, data2) - Compare two tablespace files
• parse_redo_log(data) - Parse InnoDB redo log files
• inspect_index_records(data, page_number) - Inspect records on INDEX pages
• decrypt_tablespace(data, keyring) - Decrypt encrypted tablespace
• get_encryption_info(data) - Get encryption metadata

BigInt Parameters

Some functions accept i64 or u64 parameters that map to JavaScript BigInt values. For example, analyze_pages expects a BigInt page number:

// Analyze all pages
const all = JSON.parse(analyze_pages(data, -1n));

// Analyze a specific page
const page3 = JSON.parse(analyze_pages(data, 3n));

License

MIT