113 lines
2.1 KiB
JavaScript
113 lines
2.1 KiB
JavaScript
var bcoin = require('../');
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var assert = require('assert');
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var file = process.argv[2];
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assert(typeof file === 'string', 'Please pass in a database path.');
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var 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: 16 << 20,
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writeBufferSize: 8 << 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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var height = data.readUInt32LE(1, true);
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var key = new Buffer(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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function updateState(callback) {
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var hash, batch, ver, p;
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console.log('Updating chain state.');
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db.get('R', function(err, data) {
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if (err)
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return callback(err);
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if (!data || data.length < 32)
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return callback(new Error('No chain state.'));
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hash = data.slice(0, 32);
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p = new bcoin.writer();
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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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batch = db.batch();
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batch.put('R', p);
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ver = new Buffer(4);
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ver.writeUInt32LE(1, 0, true);
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batch.put('V', ver);
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batch.write(function(err) {
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if (err)
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return callback(err);
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console.log('Updated chain state.');
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callback();
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});
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});
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}
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function updateEndian(callback) {
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var lo = new Buffer('4800000000', 'hex');
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var hi = new Buffer('48ffffffff', 'hex');
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var batch = db.batch();
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var total = 0;
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console.log('Updating endianness.');
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console.log('Iterating...');
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db.iterate({
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gte: lo,
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lte: hi,
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values: true,
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parse: function(key, value) {
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batch.del(key);
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batch.put(makeKey(key), value);
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total++;
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}
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}, function(err) {
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if (err)
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throw err;
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console.log('Migrating %d items.', total);
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batch.write(function(err) {
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if (err)
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throw err;
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console.log('Migrated endianness.');
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callback();
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});
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});
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}
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db.open(function(err) {
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if (err)
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throw err;
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console.log('Opened %s.', file);
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updateState(function(err) {
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if (err)
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throw err;
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updateEndian(function(err) {
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if (err)
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throw err;
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console.log('Migration complete.');
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process.exit(0);
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});
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});
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});
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