Denozordec
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42 lines
2.1 KiB
JavaScript
42 lines
2.1 KiB
JavaScript
import { createRequire } from 'node:module'
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import { resolve, dirname } from 'node:path'
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import { existsSync, mkdirSync, renameSync, rmSync, realpathSync } from 'node:fs'
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// Resolve through the production workspace package; pnpm isolates transitive deps.
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const require = createRequire(realpathSync(resolve('node_modules/@evofw/db/package.json')))
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const Database = require('better-sqlite3')
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const [mode, input, output, offline] = process.argv.slice(2)
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if (!['backup', 'restore', 'verify'].includes(mode) || !input || (mode !== 'verify' && !output)) {
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throw new Error('Usage: sqlite-backup.mjs backup|verify|restore INPUT [OUTPUT] [--offline]')
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}
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if (mode === 'restore' && offline !== '--offline') throw new Error('Restore requires a stopped volume and --offline')
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if (output && resolve(input) === resolve(output)) throw new Error('Input and output must differ')
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if (mode === 'backup' && existsSync(output)) throw new Error('Backup destination already exists')
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const source = new Database(input, { readonly: true, fileMustExist: true })
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let temporary
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try {
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if (source.pragma('integrity_check', { simple: true }) !== 'ok') throw new Error('Source integrity_check failed')
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if (mode !== 'verify') {
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mkdirSync(dirname(output), { recursive: true })
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temporary = `${output}.partial-${process.pid}`
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// SQLite online backup includes committed WAL pages while the API runs.
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await source.backup(temporary)
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const check = new Database(temporary, { readonly: true, fileMustExist: true })
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try {
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if (check.pragma('integrity_check', { simple: true }) !== 'ok') throw new Error('Backup integrity_check failed')
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if (check.pragma('foreign_key_check').length) throw new Error('Backup foreign_key_check failed')
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} finally { check.close() }
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if (mode === 'restore') {
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// Only safe after the caller has excluded every process using this volume.
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rmSync(`${output}-wal`, { force: true })
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rmSync(`${output}-shm`, { force: true })
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}
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renameSync(temporary, output)
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temporary = undefined
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}
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console.log(JSON.stringify({ mode, input, output, integrity: 'ok' }))
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} finally {
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source.close()
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if (temporary) rmSync(temporary, { force: true })
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}
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