114 lines
2.1 KiB
JavaScript
114 lines
2.1 KiB
JavaScript
'use strict';
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const bcoin = require('../');
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const assert = require('assert');
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const BufferWriter = require('../lib/utils/writer');
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let file = process.argv[2];
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assert(typeof file === 'string', 'Please pass in a database path.');
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file = file.replace(/\.ldb\/?$/, '');
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const db = bcoin.ldb({
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location: file,
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db: 'leveldb',
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compression: true,
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cacheSize: 32 << 20,
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createIfMissing: false,
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bufferKeys: true
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});
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function makeKey(data) {
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const height = data.readUInt32LE(1, true);
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const key = Buffer.allocUnsafe(5);
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key[0] = 0x48;
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key.writeUInt32BE(height, 1, true);
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return key;
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}
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async function checkVersion() {
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console.log('Checking version.');
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const data = await db.get('V');
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if (!data)
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return;
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const ver = data.readUInt32LE(0, true);
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if (ver !== 0)
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throw Error(`DB is version ${ver}.`);
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}
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async function updateState() {
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console.log('Updating chain state.');
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const data = await db.get('R');
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if (!data || data.length < 32)
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throw new Error('No chain state.');
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const hash = data.slice(0, 32);
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let p = new BufferWriter();
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p.writeHash(hash);
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p.writeU64(0);
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p.writeU64(0);
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p.writeU64(0);
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p = p.render();
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const batch = db.batch();
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batch.put('R', p);
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const ver = Buffer.allocUnsafe(4);
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ver.writeUInt32LE(1, 0, true);
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batch.put('V', ver);
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await batch.write();
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console.log('Updated chain state.');
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}
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async function updateEndian() {
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const batch = db.batch();
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let total = 0;
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console.log('Updating endianness.');
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console.log('Iterating...');
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const iter = db.iterator({
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gte: Buffer.from('4800000000', 'hex'),
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lte: Buffer.from('48ffffffff', 'hex'),
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values: true
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});
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for (;;) {
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const item = await iter.next();
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if (!item)
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break;
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batch.del(item.key);
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batch.put(makeKey(item.key), item.value);
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total++;
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}
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console.log('Migrating %d items.', total);
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await batch.write();
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console.log('Migrated endianness.');
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}
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(async () => {
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await db.open();
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console.log('Opened %s.', file);
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await checkVersion();
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await updateState();
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await updateEndian();
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})().then(() => {
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console.log('Migration complete.');
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process.exit(0);
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});
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