1694 lines
39 KiB
JavaScript
1694 lines
39 KiB
JavaScript
/*!
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* txdb.js - persistent transaction pool
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* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
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* Copyright (c) 2014-2016, Christopher Jeffrey (MIT License).
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* https://github.com/bcoin-org/bcoin
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*/
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'use strict';
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/*
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* Database Layout:
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* t/[hash] -> extended tx
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* c/[hash]/[index] -> coin
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* s/[hash]/[index] -> spent by hash
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* o/[hash]/[index] -> orphan inputs
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* p/[hash] -> dummy (pending flag)
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* m/[time]/[hash] -> dummy (tx by time)
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* h/[height]/[hash] -> dummy (tx by height)
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* T/[id]/[name]/[hash] -> dummy (tx by wallet id)
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* P/[id]/[name]/[hash] -> dummy (pending tx by wallet/account id)
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* M/[id]/[name]/[time]/[hash] -> dummy (tx by time + id/account)
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* H/[id]/[name]/[height]/[hash] -> dummy (tx by height + id/account)
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* C/[id]/[name]/[hash]/[index] -> dummy (coin by id/account)
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*/
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var bcoin = require('./env');
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var utils = require('./utils');
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var assert = bcoin.utils.assert;
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var EventEmitter = require('events').EventEmitter;
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var DUMMY = new Buffer([0]);
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var pad32 = utils.pad32;
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var BufferReader = require('./reader');
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var BufferWriter = require('./writer');
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/**
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* TXDB
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* @exports TXDB
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* @constructor
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* @param {LowlevelUp} db
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* @param {Object?} options
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* @param {Boolean?} options.mapAddress - Map addresses to IDs.
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* @param {Boolean?} options.indexAddress - Index addresses/IDs.
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* @param {Boolean?} options.indexExtra - Index timestamps, heights, etc.
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* @param {Boolean?} options.verify - Verify transactions as they
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* come in (note that this will not happen on the worker
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* pool -- only used for SPV).
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*/
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function TXDB(db, options) {
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if (!(this instanceof TXDB))
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return new TXDB(db, options);
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EventEmitter.call(this);
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if (!options)
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options = {};
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this.walletdb = db;
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this.db = db.db;
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this.options = options;
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this.network = bcoin.network.get(options.network);
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this.busy = false;
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this.jobs = [];
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this.locker = new bcoin.locker(this);
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this.filter = this.options.useFilter
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? new bcoin.bloom.rolling(800000, 0.01)
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: null;
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}
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utils.inherits(TXDB, EventEmitter);
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TXDB.prototype._lock = function _lock(func, args, force) {
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return this.locker.lock(func, args, force);
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};
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TXDB.prototype._loadFilter = function loadFilter(callback) {
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var self = this;
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if (!this.filter)
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return callback();
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this.db.iterate({
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gte: 'W',
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lte: 'W~',
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transform: function(key) {
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key = key.split('/')[1];
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self.filter.add(key, 'hex');
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}
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}, callback);
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};
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TXDB.prototype._testFilter = function _testFilter(addresses) {
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var i;
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if (!this.filter)
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return true;
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for (i = 0; i < addresses.length; i++) {
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if (this.filter.test(addresses[i], 'hex'))
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return true;
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}
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return false;
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};
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/**
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* Map a transactions' addresses to wallet IDs.
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* @param {TX} tx
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* @param {Function} callback - Returns [Error, {@link AddressMap}].
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*/
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TXDB.prototype.getMap = function getMap(tx, callback) {
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var i, input, output, address, addresses, map;
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input = tx.getInputHashes('hex');
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output = tx.getOutputHashes('hex');
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addresses = utils.uniq(input.concat(output));
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if (!this._testFilter(addresses))
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return callback();
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this.mapAddresses(addresses, function(err, table) {
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if (err)
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return callback(err);
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if (table.count === 0)
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return callback();
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map = {
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table: table,
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input: [],
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output: [],
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all: []
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};
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for (i = 0; i < input.length; i++) {
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address = input[i];
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assert(map.table[address]);
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map.input = map.input.concat(map.table[address]);
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}
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for (i = 0; i < output.length; i++) {
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address = output[i];
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assert(map.table[address]);
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map.output = map.output.concat(map.table[address]);
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}
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map.input = uniq(map.input);
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map.output = uniq(map.output);
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map.all = uniq(map.input.concat(map.output));
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return callback(null, map);
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});
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};
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/**
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* Map address hashes to a wallet ID.
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* @param {Hash[]} address - Address hashes.
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* @param {Function} callback - Returns [Error, {@link AddressTable}].
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*/
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TXDB.prototype.mapAddresses = function mapAddresses(address, callback) {
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var self = this;
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var table = { count: 0 };
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var i, keys, values;
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return utils.forEachSerial(address, function(address, next) {
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self.walletdb.getAddress(address, function(err, paths) {
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if (err)
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return next(err);
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if (!paths)
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return next();
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keys = Object.keys(paths);
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values = [];
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for (i = 0; i < keys.length; i++)
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values.push(paths[keys[i]]);
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assert(!table[address]);
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table[address] = values;
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table.count += values.length;
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return next();
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});
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}, function(err) {
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if (err)
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return callback(err);
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return callback(null, table);
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});
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};
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/**
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* Add an orphan (tx hash + input index)
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* to orphan list. Stored by its required coin ID.
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* @private
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* @param {String} key - Required coin hash + index.
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* @param {Hash} hash - Orphan transaction hash.
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* @param {Number} index - Orphan input index.
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* @param {Function} callback - Returns [Error, Buffer].
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*/
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TXDB.prototype._addOrphan = function _addOrphan(key, hash, index, callback) {
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var p;
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this.db.get('o/' + key, function(err, buf) {
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if (err && err.type !== 'NotFoundError')
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return callback(err);
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p = new BufferWriter();
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if (buf)
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p.writeBytes(buf);
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p.writeHash(hash);
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p.writeU32(index);
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return callback(null, p.render());
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});
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};
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/**
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* Retrieve orphan list by coin ID.
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* @private
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* @param {String} key
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* @param {Function} callback - Returns [Error, {@link Orphan}].
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*/
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TXDB.prototype._getOrphans = function _getOrphans(key, callback) {
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var self = this;
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this.db.fetch('o/' + key, function(buf) {
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var p = new BufferReader(buf);
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var orphans = [];
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while (p.left()) {
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orphans.push({
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hash: p.readHash('hex'),
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index: p.readU32()
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});
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}
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return orphans;
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}, function(err, orphans) {
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if (err)
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return callback(err);
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if (!orphans)
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return callback();
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utils.forEach(orphans, function(orphan, next) {
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self.getTX(orphan.hash, function(err, tx) {
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if (err)
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return next(err);
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orphan.tx = tx;
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next();
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});
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}, function(err) {
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if (err)
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return callback(err);
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return callback(null, orphans);
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});
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});
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};
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/**
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* Add a transaction to the database, map addresses
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* to wallet IDs, potentially store orphans, resolve
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* orphans, or confirm a transaction.
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* @param {TX} tx
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* @param {Function} callback - Returns [Error].
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*/
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TXDB.prototype.add = function add(tx, callback, force) {
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var self = this;
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return this.getMap(tx, function(err, map) {
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if (err)
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return callback(err);
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if (!map)
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return callback(null, false);
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return self._add(tx, map, callback, force);
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});
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};
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TXDB.prototype._add = function add(tx, map, callback, force) {
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var self = this;
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var updated = false;
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var batch, hash, i, j, unlock, path, paths, id;
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unlock = this._lock(add, [tx, map, callback], force);
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if (!unlock)
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return;
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callback = utils.wrap(callback, unlock);
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if (tx.mutable)
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tx = tx.toTX();
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// Attempt to confirm tx before adding it.
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this._confirm(tx, map, function(err, existing) {
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if (err)
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return callback(err);
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// Ignore if we already have this tx.
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if (existing)
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return callback(null, true, map);
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hash = tx.hash('hex');
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batch = self.db.batch();
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batch.put('t/' + hash, tx.toExtended());
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if (tx.ts === 0) {
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batch.put('p/' + hash, DUMMY);
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batch.put('m/' + pad32(tx.ps) + '/' + hash, DUMMY);
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} else {
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batch.put('h/' + pad32(tx.height) + '/' + hash, DUMMY);
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batch.put('m/' + pad32(tx.ts) + '/' + hash, DUMMY);
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}
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for (i = 0; i < map.all.length; i++) {
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path = map.all[i];
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id = path.id + '/' + path.account;
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batch.put('T/' + id + '/' + hash, DUMMY);
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if (tx.ts === 0) {
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batch.put('P/' + id + '/' + hash, DUMMY);
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batch.put('M/' + id + '/' + pad32(tx.ps) + '/' + hash, DUMMY);
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} else {
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batch.put('H/' + id + '/' + pad32(tx.height) + '/' + hash, DUMMY);
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batch.put('M/' + id + '/' + pad32(tx.ts) + '/' + hash, DUMMY);
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}
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}
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// Consume unspent money or add orphans
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utils.forEachSerial(tx.inputs, function(input, next, i) {
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var prevout = input.prevout;
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var key, address;
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if (tx.isCoinbase())
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return next();
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address = input.getHash('hex');
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// Only add orphans if this input is ours.
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if (!address || !map.table[address].length)
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return next();
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self.getCoin(prevout.hash, prevout.index, function(err, coin) {
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if (err)
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return next(err);
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key = prevout.hash + '/' + prevout.index;
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batch.put('s/' + key, tx.hash());
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if (coin) {
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// Add TX to inputs and spend money
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input.coin = coin;
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// Skip invalid transactions
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if (self.options.verify) {
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if (!tx.verifyInput(i))
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return callback(null, false);
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}
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updated = true;
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paths = map.table[address];
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for (j = 0; j < paths.length; j++) {
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path = paths[j];
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id = path.id + '/' + path.account;
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batch.del('C/' + id + '/' + key);
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}
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batch.del('c/' + key);
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return next();
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}
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input.coin = null;
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self.isSpent(prevout.hash, prevout.index, function(err, spent) {
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if (err)
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return next(err);
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// Are we double-spending?
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// Replace older txs with newer ones.
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if (spent) {
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return self.getTX(prevout.hash, function(err, prev) {
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if (err)
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return next(err);
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if (!prev)
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return callback(new Error('Could not find double-spent coin.'));
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input.coin = bcoin.coin.fromTX(prev, prevout.index);
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// Skip invalid transactions
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if (self.options.verify) {
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if (!tx.verifyInput(i))
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return callback(null, false, map);
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}
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return self._removeConflict(spent, tx, function(err, rtx, rmap) {
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if (err)
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return next(err);
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// Spender was not removed, the current
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// transaction is not elligible to be added.
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if (!rtx)
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return callback(null, false, map);
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self.emit('conflict', rtx, rmap);
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batch.clear();
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self._add(tx, map, callback, true);
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});
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});
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}
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// Add orphan, if no parent transaction is yet known
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self._addOrphan(key, hash, i, function(err, orphans) {
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if (err)
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return next(err);
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batch.put('o/' + key, orphans);
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return next();
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});
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});
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});
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}, function(err) {
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if (err)
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return callback(err);
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// Add unspent outputs or resolve orphans
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utils.forEachSerial(tx.outputs, function(output, next, i) {
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var address = output.getHash('hex');
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var key = hash + '/' + i;
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var coin;
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// Do not add unspents for outputs that aren't ours.
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if (!address || !map.table[address].length)
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return next();
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if (output.script.isUnspendable())
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return next();
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coin = bcoin.coin.fromTX(tx, i);
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self._getOrphans(key, function(err, orphans) {
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var some = false;
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if (err)
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return callback(err);
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if (!orphans)
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return finish();
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// Add input to orphan
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utils.forEachSerial(orphans, function(orphan, next) {
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if (some)
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return next();
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// Probably removed by some other means.
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if (!orphan.tx)
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return next();
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orphan.tx.inputs[orphan.index].coin = coin;
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assert(orphan.tx.inputs[orphan.index].prevout.hash === hash);
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assert(orphan.tx.inputs[orphan.index].prevout.index === i);
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// Verify that input script is correct, if not - add
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// output to unspent and remove orphan from storage
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if (!self.options.verify) {
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some = true;
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return next();
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}
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if (orphan.tx.verifyInput(orphan.index)) {
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some = true;
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return next();
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}
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self.lazyRemove(orphan.tx, next, true);
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}, function(err) {
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if (err)
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return next(err);
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if (!some)
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orphans = null;
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self.db.del('o/' + key, finish);
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});
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function finish(err) {
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if (err)
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return next(err);
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if (!orphans) {
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paths = map.table[address];
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for (j = 0; j < paths.length; j++) {
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path = paths[j];
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id = path.id + '/' + path.account;
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batch.put('C/' + id + '/' + key, DUMMY);
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}
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batch.put('c/' + key, coin.toRaw());
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updated = true;
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}
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next();
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}
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});
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}, function(err) {
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if (err)
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return callback(err);
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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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self.walletdb.syncOutputs(tx, map, function(err) {
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if (err)
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return callback(err);
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self.emit('tx', tx, map);
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if (updated) {
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if (tx.ts !== 0)
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self.emit('confirmed', tx, map);
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self.emit('updated', tx, map);
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}
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return callback(null, true, map);
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});
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});
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});
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});
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}, true);
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};
|
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|
|
/**
|
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* Remove spenders that have not been confirmed. We do this in the
|
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* odd case of stuck transactions or when a coin is double-spent
|
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* by a newer transaction. All previously-spending transactions
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* of that coin that are _not_ confirmed will be removed from
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* the database.
|
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* @private
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* @param {Hash} hash
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* @param {TX} ref - Reference tx, the tx that double-spent.
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|
* @param {Function} callback - Returns [Error, Boolean].
|
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*/
|
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|
|
TXDB.prototype._removeConflict = function _removeConflict(hash, ref, callback) {
|
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var self = this;
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|
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this.getTX(hash, function(err, tx) {
|
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if (err)
|
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return callback(err);
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|
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if (!tx)
|
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return callback(new Error('Could not find spender.'));
|
|
|
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if (tx.ts !== 0) {
|
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// If spender is confirmed and replacement
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// is not confirmed, do nothing.
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if (ref.ts === 0)
|
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return callback();
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|
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// If both are confirmed but replacement
|
|
// is older than spender, do nothing.
|
|
if (ref.ts < tx.ts)
|
|
return callback();
|
|
} else {
|
|
// If spender is unconfirmed and replacement
|
|
// is confirmed, do nothing.
|
|
if (ref.ts !== 0)
|
|
return callback();
|
|
|
|
// If both are unconfirmed but replacement
|
|
// is older than spender, do nothing.
|
|
if (ref.ps < tx.ps)
|
|
return callback();
|
|
}
|
|
|
|
self._removeRecursive(tx, function(err, result, map) {
|
|
if (err)
|
|
return callback(err);
|
|
return callback(null, tx, map);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Remove a transaction and recursively
|
|
* remove all of its spenders.
|
|
* @private
|
|
* @param {TX} tx - Transaction to be removed.
|
|
* @param {Function} callback - Returns [Error, Boolean].
|
|
*/
|
|
|
|
TXDB.prototype._removeRecursive = function _removeRecursive(tx, callback) {
|
|
var self = this;
|
|
var hash = tx.hash('hex');
|
|
|
|
utils.forEachSerial(tx.outputs, function(output, next, i) {
|
|
self.isSpent(hash, i, function(err, spent) {
|
|
if (err)
|
|
return next(err);
|
|
|
|
// Remove all of the spender's spenders first.
|
|
if (spent) {
|
|
return self.getTX(spent, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return callback(new Error('Could not find spender.'));
|
|
|
|
return self._removeRecursive(tx, next);
|
|
});
|
|
}
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
// Remove the spender.
|
|
return self.lazyRemove(tx, callback, true);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Test an entire transaction to see
|
|
* if any of its outpoints are a double-spend.
|
|
* @param {TX} tx
|
|
* @param {Function} callback - Returns [Error, Boolean].
|
|
*/
|
|
|
|
TXDB.prototype.isDoubleSpend = function isDoubleSpend(tx, callback) {
|
|
var self = this;
|
|
|
|
utils.everySerial(tx.inputs, function(input, next) {
|
|
self.isSpent(input.prevout.hash, input.prevout.index, function(err, spent) {
|
|
if (err)
|
|
return next(err);
|
|
return next(null, !spent);
|
|
});
|
|
}, function(err, result) {
|
|
if (err)
|
|
return callback(err);
|
|
return callback(null, !result);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Test a whether a coin has been spent.
|
|
* @param {Hash} hash
|
|
* @param {Number} index
|
|
* @param {Function} callback - Returns [Error, Boolean].
|
|
*/
|
|
|
|
TXDB.prototype.isSpent = function isSpent(hash, index, callback) {
|
|
var key = 's/' + hash + '/' + index;
|
|
return this.db.fetch(key, function(hash) {
|
|
return hash.toString('hex');
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Attempt to confirm a transaction.
|
|
* @private
|
|
* @param {TX} tx
|
|
* @param {AddressMap} map
|
|
* @param {Function} callback - Returns [Error, Boolean]. `false` if
|
|
* the transaction should be added to the database, `true` if the
|
|
* transaction was confirmed, or should be ignored.
|
|
*/
|
|
|
|
TXDB.prototype._confirm = function _confirm(tx, map, callback, force) {
|
|
var self = this;
|
|
var hash, batch, unlock, i, path, id;
|
|
|
|
unlock = this._lock(_confirm, [tx, map, callback], force);
|
|
|
|
if (!unlock)
|
|
return;
|
|
|
|
callback = utils.wrap(callback, unlock);
|
|
|
|
hash = tx.hash('hex');
|
|
|
|
this.getTX(hash, function(err, existing) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
// Haven't seen this tx before, add it.
|
|
if (!existing)
|
|
return callback(null, false, map);
|
|
|
|
// Existing tx is already confirmed. Ignore.
|
|
if (existing.ts !== 0)
|
|
return callback(null, true, map);
|
|
|
|
// The incoming tx won't confirm the
|
|
// existing one anyway. Ignore.
|
|
if (tx.ts === 0)
|
|
return callback(null, true, map);
|
|
|
|
batch = self.db.batch();
|
|
|
|
// Tricky - update the tx and coin in storage,
|
|
// and remove pending flag to mark as confirmed.
|
|
assert(tx.height >= 0);
|
|
assert(existing.ps > 0);
|
|
|
|
batch.put('t/' + hash, tx.toExtended());
|
|
|
|
batch.del('p/' + hash);
|
|
batch.put('h/' + pad32(tx.height) + '/' + hash, DUMMY);
|
|
batch.del('m/' + pad32(existing.ps) + '/' + hash);
|
|
batch.put('m/' + pad32(tx.ts) + '/' + hash, DUMMY);
|
|
|
|
for (i = 0; i < map.all.length; i++) {
|
|
path = map.all[i];
|
|
id = path.id + '/' + path.account;
|
|
batch.del('P/' + id + '/' + hash);
|
|
batch.put('H/' + id + '/' + pad32(tx.height) + '/' + hash, DUMMY);
|
|
batch.del('M/' + id + '/' + pad32(existing.ps) + '/' + hash);
|
|
batch.put('M/' + id + '/' + pad32(tx.ts) + '/' + hash, DUMMY);
|
|
}
|
|
|
|
utils.forEachSerial(tx.outputs, function(output, next, i) {
|
|
var address = output.getHash('hex');
|
|
|
|
// Only update coins if this output is ours.
|
|
if (!address || !map.table[address].length)
|
|
return next();
|
|
|
|
self.getCoin(hash, i, function(err, coin) {
|
|
if (err)
|
|
return next(err);
|
|
|
|
if (!coin)
|
|
return next();
|
|
|
|
coin.height = tx.height;
|
|
|
|
batch.put('c/' + hash + '/' + i, coin.toRaw());
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
batch.write(function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
self.walletdb.syncOutputs(tx, map, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
self.emit('confirmed', tx, map);
|
|
self.emit('tx', tx, map);
|
|
|
|
return callback(null, true, map);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Remove a transaction from the database. Disconnect inputs.
|
|
* @param {Hash} hash
|
|
* @param {Function} callback - Returns [Error].
|
|
*/
|
|
|
|
TXDB.prototype.remove = function remove(hash, callback, force) {
|
|
var self = this;
|
|
|
|
if (hash.hash)
|
|
hash = hash.hash('hex');
|
|
|
|
this.getTX(hash, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return callback(null, true);
|
|
|
|
assert(tx.hash('hex') === hash);
|
|
|
|
return self.getMap(tx, function(err, map) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!map)
|
|
return callback(null, false);
|
|
|
|
return self._remove(tx, map, callback, force);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Remove a transaction from the database, but do not
|
|
* look up the transaction. Use the passed-in transaction
|
|
* to disconnect.
|
|
* @param {TX} tx
|
|
* @param {Function} callback - Returns [Error].
|
|
*/
|
|
|
|
TXDB.prototype.lazyRemove = function lazyRemove(tx, callback, force) {
|
|
var self = this;
|
|
|
|
return this.getMap(tx, function(err, map) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!map)
|
|
return callback(null, false);
|
|
|
|
return self._remove(tx, map, callback, force);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Remove a transaction from the database. Disconnect inputs.
|
|
* @private
|
|
* @param {TX} tx
|
|
* @param {AddressMap} map
|
|
* @param {Function} callback - Returns [Error].
|
|
*/
|
|
|
|
TXDB.prototype._remove = function remove(tx, map, callback, force) {
|
|
var self = this;
|
|
var unlock, hash, batch, i, j, path, id, key, paths, address, input, output;
|
|
|
|
unlock = this._lock(remove, [tx, map, callback], force);
|
|
|
|
if (!unlock)
|
|
return;
|
|
|
|
callback = utils.wrap(callback, unlock);
|
|
|
|
hash = tx.hash('hex');
|
|
|
|
batch = this.db.batch();
|
|
|
|
batch.del('t/' + hash);
|
|
|
|
if (tx.ts === 0) {
|
|
batch.del('p/' + hash);
|
|
batch.del('m/' + pad32(tx.ps) + '/' + hash);
|
|
} else {
|
|
batch.del('h/' + pad32(tx.height) + '/' + hash);
|
|
batch.del('m/' + pad32(tx.ts) + '/' + hash);
|
|
}
|
|
|
|
for (i = 0; i < map.all.length; i++) {
|
|
path = map.all[i];
|
|
id = path.id + '/' + path.account;
|
|
batch.del('T/' + id + '/' + hash);
|
|
if (tx.ts === 0) {
|
|
batch.del('P/' + id + '/' + hash);
|
|
batch.del('M/' + id + '/' + pad32(tx.ps) + '/' + hash);
|
|
} else {
|
|
batch.del('H/' + id + '/' + pad32(tx.height) + '/' + hash);
|
|
batch.del('M/' + id + '/' + pad32(tx.ts) + '/' + hash);
|
|
}
|
|
}
|
|
|
|
this.fillHistory(tx, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
for (i = 0; i < tx.inputs.length; i++) {
|
|
input = tx.inputs[i];
|
|
key = input.prevout.hash + '/' + input.prevout.index;
|
|
address = input.getHash('hex');
|
|
|
|
if (tx.isCoinbase())
|
|
break;
|
|
|
|
if (!input.coin)
|
|
continue;
|
|
|
|
if (!address || !map.table[address].length)
|
|
continue;
|
|
|
|
paths = map.table[address];
|
|
|
|
for (j = 0; j < paths.length; j++) {
|
|
path = paths[j];
|
|
id = path.id + '/' + path.account;
|
|
batch.put('C/' + id + '/' + key, DUMMY);
|
|
}
|
|
|
|
batch.put('c/' + key, input.coin.toRaw());
|
|
batch.del('s/' + key);
|
|
batch.del('o/' + key);
|
|
}
|
|
|
|
for (i = 0; i < tx.outputs.length; i++) {
|
|
output = tx.outputs[i];
|
|
key = hash + '/' + i;
|
|
address = output.getHash('hex');
|
|
|
|
if (!address || !map.table[address].length)
|
|
continue;
|
|
|
|
if (output.script.isUnspendable())
|
|
continue;
|
|
|
|
paths = map.table[address];
|
|
|
|
for (j = 0; j < paths.length; j++) {
|
|
path = paths[j];
|
|
id = path.id + '/' + path.account;
|
|
batch.del('C/' + id + '/' + key);
|
|
}
|
|
|
|
batch.del('c/' + key);
|
|
}
|
|
|
|
batch.write(function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
self.emit('remove tx', tx, map);
|
|
|
|
return callback(null, true, map);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Unconfirm a transaction. This is usually necessary after a reorg.
|
|
* @param {Hash} hash
|
|
* @param {Function} callback
|
|
*/
|
|
|
|
TXDB.prototype.unconfirm = function unconfirm(hash, callback, force) {
|
|
var self = this;
|
|
|
|
if (hash.hash)
|
|
hash = hash.hash('hex');
|
|
|
|
callback = utils.ensure(callback);
|
|
|
|
this.getTX(hash, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return callback(null, true);
|
|
|
|
assert(tx.hash('hex') === hash);
|
|
|
|
return self.getMap(tx, function(err, map) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!map)
|
|
return callback(null, false);
|
|
|
|
return self._unconfirm(tx, map, callback, force);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Unconfirm a transaction. This is usually necessary after a reorg.
|
|
* @param {Hash} hash
|
|
* @param {AddressMap} map
|
|
* @param {Function} callback
|
|
*/
|
|
|
|
TXDB.prototype._unconfirm = function unconfirm(tx, map, callback, force) {
|
|
var self = this;
|
|
var batch, unlock, hash, height, ts, i, path, id;
|
|
|
|
unlock = this._lock(unconfirm, [tx, map, callback], force);
|
|
|
|
if (!unlock)
|
|
return;
|
|
|
|
callback = utils.wrap(callback, unlock);
|
|
|
|
hash = tx.hash('hex');
|
|
height = tx.height;
|
|
ts = tx.ts;
|
|
|
|
batch = this.db.batch();
|
|
|
|
if (height !== -1)
|
|
return callback(null, false, map);
|
|
|
|
tx.height = -1;
|
|
tx.ps = utils.now();
|
|
tx.ts = 0;
|
|
tx.index = -1;
|
|
tx.block = null;
|
|
|
|
batch.put('t/' + hash, tx.toExtended());
|
|
|
|
batch.put('p/' + hash, DUMMY);
|
|
batch.del('h/' + pad32(height) + '/' + hash);
|
|
batch.del('m/' + pad32(ts) + '/' + hash);
|
|
batch.put('m/' + pad32(tx.ps) + '/' + hash, DUMMY);
|
|
|
|
for (i = 0; i < map.all.length; i++) {
|
|
path = map.all[i];
|
|
id = path.id + '/' + path.account;
|
|
batch.put('P/' + id + '/' + hash, DUMMY);
|
|
batch.del('H/' + id + '/' + pad32(height) + '/' + hash);
|
|
batch.del('M/' + id + '/' + pad32(ts) + '/' + hash);
|
|
batch.put('M/' + id + '/' + pad32(tx.ps) + '/' + hash, DUMMY);
|
|
}
|
|
|
|
utils.forEachSerial(tx.outputs, function(output, next, i) {
|
|
self.getCoin(hash, i, function(err, coin) {
|
|
if (err)
|
|
return next(err);
|
|
|
|
if (!coin)
|
|
return next();
|
|
|
|
coin.height = tx.height;
|
|
|
|
batch.put('c/' + hash + '/' + i, coin.toRaw());
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
batch.write(function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
self.emit('unconfirmed', tx, map);
|
|
|
|
return callback(null, true, map);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get hashes of all transactions in the database.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getHistoryHashes = function getHistoryHashes(id, callback) {
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
this.db.iterate({
|
|
gte: id ? 'T/' + id + '/' : 't',
|
|
lte: id ? 'T/' + id + '/~' : 't~',
|
|
transform: function(key) {
|
|
key = key.split('/');
|
|
if (id)
|
|
return key[3];
|
|
return key[1];
|
|
}
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get hashes of all unconfirmed transactions in the database.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getUnconfirmedHashes = function getUnconfirmedHashes(id, callback) {
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
this.db.iterate({
|
|
gte: id ? 'P/' + id + '/' : 'p',
|
|
lte: id ? 'P/' + id + '/~' : 'p~',
|
|
transform: function(key) {
|
|
key = key.split('/');
|
|
if (id)
|
|
return key[3];
|
|
return key[1];
|
|
}
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get all coin hashes in the database.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getCoinHashes = function getCoinHashes(id, callback) {
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
this.db.iterate({
|
|
gte: id ? 'C/' + id + '/' : 'c',
|
|
lte: id ? 'C/' + id + '/~' : 'c~',
|
|
transform: function(key) {
|
|
key = key.split('/');
|
|
if (id)
|
|
return [key[3], +key[4]];
|
|
return [key[1], +key[2]];
|
|
}
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get TX hashes by height range.
|
|
* @param {WalletID?} id
|
|
* @param {Object} options
|
|
* @param {Number} options.start - Start height.
|
|
* @param {Number} options.end - End height.
|
|
* @param {Number?} options.limit - Max number of records.
|
|
* @param {Boolean?} options.reverse - Reverse order.
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getHeightRangeHashes = function getHeightRangeHashes(id, options, callback) {
|
|
if (typeof id !== 'string') {
|
|
callback = options;
|
|
options = id;
|
|
id = null;
|
|
}
|
|
|
|
this.db.iterate({
|
|
gte: id
|
|
? 'H/' + id + '/' + pad32(options.start) + '/'
|
|
: 'h/' + pad32(options.start) + '/',
|
|
lte: id
|
|
? 'H/' + id + '/' + pad32(options.end) + '/~'
|
|
: 'h/' + pad32(options.end) + '/~',
|
|
limit: options.limit,
|
|
reverse: options.reverse,
|
|
transform: function(key) {
|
|
key = key.split('/');
|
|
if (id)
|
|
return key[4];
|
|
return key[2];
|
|
}
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get TX hashes by height.
|
|
* @param {Number} height
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getHeightHashes = function getHeightHashes(height, callback) {
|
|
return this.getHeightRangeHashes({ start: height, end: height }, callback);
|
|
};
|
|
|
|
/**
|
|
* Get TX hashes by timestamp range.
|
|
* @param {WalletID?} id
|
|
* @param {Object} options
|
|
* @param {Number} options.start - Start height.
|
|
* @param {Number} options.end - End height.
|
|
* @param {Number?} options.limit - Max number of records.
|
|
* @param {Boolean?} options.reverse - Reverse order.
|
|
* @param {Function} callback - Returns [Error, {@link Hash}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getRangeHashes = function getRangeHashes(id, options, callback) {
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
this.db.iterate({
|
|
gte: id
|
|
? 'M/' + id + '/' + pad32(options.start) + '/'
|
|
: 'm/' + pad32(options.start) + '/',
|
|
lte: id
|
|
? 'M/' + id + '/' + pad32(options.end) + '/~'
|
|
: 'm/' + pad32(options.end) + '/~',
|
|
limit: options.limit,
|
|
reverse: options.reverse,
|
|
transform: function(key) {
|
|
key = key.split('/');
|
|
if (id)
|
|
return key[4];
|
|
return key[2];
|
|
}
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get transactions by timestamp range.
|
|
* @param {WalletID?} id
|
|
* @param {Object} options
|
|
* @param {Number} options.start - Start height.
|
|
* @param {Number} options.end - End height.
|
|
* @param {Number?} options.limit - Max number of records.
|
|
* @param {Boolean?} options.reverse - Reverse order.
|
|
* @param {Function} callback - Returns [Error, {@link TX}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getRange = function getLast(id, options, callback) {
|
|
var self = this;
|
|
var txs = [];
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getRangeHashes(id, options, function(err, hashes) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(hashes, function(hash, next) {
|
|
self.getTX(hash, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return next();
|
|
|
|
txs.push(tx);
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
return callback(null, txs);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get last N transactions.
|
|
* @param {WalletID?} id
|
|
* @param {Number} limit - Max number of transactions.
|
|
* @param {Function} callback - Returns [Error, {@link TX}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getLast = function getLast(id, limit, callback) {
|
|
if (typeof limit === 'function') {
|
|
callback = limit;
|
|
limit = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getRange(id, {
|
|
start: 0,
|
|
end: 0xffffffff,
|
|
reverse: true,
|
|
limit: limit
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Get all transactions.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link TX}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getHistory = function getHistory(id, callback) {
|
|
var self = this;
|
|
var txs = [];
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getHistoryHashes(id, function(err, hashes) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(hashes, function(hash, next) {
|
|
self.getTX(hash, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return next();
|
|
|
|
txs.push(tx);
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
return callback(null, utils.sortTX(txs));
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get last active timestamp and height.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, Number(ts), Number(height)].
|
|
*/
|
|
|
|
TXDB.prototype.getLastTime = function getLastTime(id, callback) {
|
|
var i, tx, lastTs, lastHeight;
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getHistory(id, function(err, txs) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
lastTs = 0;
|
|
lastHeight = -1;
|
|
|
|
for (i = 0; i < txs.length; i++) {
|
|
tx = txs[i];
|
|
|
|
if (tx.ts > lastTs)
|
|
lastTs = tx.ts;
|
|
|
|
if (tx.height > lastHeight)
|
|
lastHeight = tx.height;
|
|
}
|
|
|
|
return callback(null, lastTs, lastHeight);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get unconfirmed transactions.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link TX}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getUnconfirmed = function getUnconfirmed(id, callback) {
|
|
var self = this;
|
|
var txs = [];
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getUnconfirmedHashes(id, function(err, hashes) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(hashes, function(hash, next) {
|
|
self.getTX(hash, function(err, tx) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!tx)
|
|
return next();
|
|
|
|
txs.push(tx);
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
return callback(null, txs);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get coins.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link Coin}[]].
|
|
*/
|
|
|
|
TXDB.prototype.getCoins = function getCoins(id, callback) {
|
|
var self = this;
|
|
var coins = [];
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getCoinHashes(id, function(err, hashes) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(hashes, function(key, next) {
|
|
self.getCoin(key[0], key[1], function(err, coin) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (!coin)
|
|
return next();
|
|
|
|
coins.push(coin);
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
return callback(null, coins);
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Fill a transaction with coins (all historical coins).
|
|
* @param {TX} tx
|
|
* @param {Function} callback - Returns [Error, {@link TX}].
|
|
*/
|
|
|
|
TXDB.prototype.fillHistory = function fillHistory(tx, callback) {
|
|
var self = this;
|
|
|
|
if (Array.isArray(tx)) {
|
|
return utils.forEachSerial(tx, function(tx, next) {
|
|
self.fillHistory(tx, next);
|
|
}, callback);
|
|
}
|
|
|
|
callback = utils.asyncify(callback);
|
|
|
|
if (tx.isCoinbase())
|
|
return callback(null, tx);
|
|
|
|
utils.forEach(tx.inputs, function(input, next) {
|
|
if (input.coin)
|
|
return next();
|
|
|
|
self.getTX(input.prevout.hash, function(err, tx) {
|
|
if (err)
|
|
return next(err);
|
|
|
|
if (tx)
|
|
input.coin = bcoin.coin.fromTX(tx, input.prevout.index);
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
return callback(null, tx);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Fill a transaction with coins.
|
|
* @param {TX} tx
|
|
* @param {Function} callback - Returns [Error, {@link TX}].
|
|
*/
|
|
|
|
TXDB.prototype.fillCoins = function fillCoins(tx, callback) {
|
|
var self = this;
|
|
|
|
if (Array.isArray(tx)) {
|
|
return utils.forEachSerial(tx, function(tx, next) {
|
|
self.fillCoins(tx, next);
|
|
}, callback);
|
|
}
|
|
|
|
callback = utils.asyncify(callback);
|
|
|
|
if (tx.isCoinbase())
|
|
return callback(null, tx);
|
|
|
|
utils.forEach(tx.inputs, function(input, next) {
|
|
if (input.coin)
|
|
return next();
|
|
|
|
self.getCoin(input.prevout.hash, input.prevout.index, function(err, coin) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
if (coin)
|
|
input.coin = coin;
|
|
|
|
next();
|
|
});
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
return callback(null, tx);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Get transaction.
|
|
* @param {Hash} hash
|
|
* @param {Function} callback - Returns [Error, {@link TX}].
|
|
*/
|
|
|
|
TXDB.prototype.getTX = function getTX(hash, callback) {
|
|
this.db.fetch('t/' + hash, function(tx) {
|
|
return bcoin.tx.fromExtended(tx);
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Test whether the database has a transaction.
|
|
* @param {Hash} hash
|
|
* @param {Function} callback - Returns [Error, Boolean].
|
|
*/
|
|
|
|
TXDB.prototype.hasTX = function hasTX(hash, callback) {
|
|
return this.db.has('t/' + hash, callback);
|
|
};
|
|
|
|
/**
|
|
* Get coin.
|
|
* @param {Hash} hash
|
|
* @param {Number} index
|
|
* @param {Function} callback - Returns [Error, {@link Coin}].
|
|
*/
|
|
|
|
TXDB.prototype.getCoin = function getCoin(hash, index, callback) {
|
|
this.db.fetch('c/' + hash + '/' + index, function(data) {
|
|
var coin = bcoin.coin.fromRaw(data);
|
|
coin.hash = hash;
|
|
coin.index = index;
|
|
return coin;
|
|
}, callback);
|
|
};
|
|
|
|
/**
|
|
* Test whether the database has a transaction.
|
|
* @param {Hash} hash
|
|
* @param {Function} callback - Returns [Error, Boolean].
|
|
*/
|
|
|
|
TXDB.prototype.hasCoin = function hasCoin(hash, index, callback) {
|
|
return this.db.has('c/' + hash + '/' + index, callback);
|
|
};
|
|
|
|
/**
|
|
* Calculate balance.
|
|
* @param {WalletID?} id
|
|
* @param {Function} callback - Returns [Error, {@link Balance}].
|
|
*/
|
|
|
|
TXDB.prototype.getBalance = function getBalance(id, callback) {
|
|
var self = this;
|
|
var confirmed = 0;
|
|
var unconfirmed = 0;
|
|
|
|
if (typeof id === 'function') {
|
|
callback = id;
|
|
id = null;
|
|
}
|
|
|
|
return this.getCoinHashes(id, function(err, hashes) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(hashes, function(hash, next) {
|
|
self.db.fetch('c/' + hash[0] + '/' + hash[1], function(data, key) {
|
|
var height = data.readUInt32LE(4, true);
|
|
var value = utils.read64N(data, 8);
|
|
|
|
assert(data.length >= 16);
|
|
|
|
if (height === 0x7fffffff)
|
|
unconfirmed += value;
|
|
else
|
|
confirmed += value;
|
|
}, next);
|
|
}, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
return callback(null, {
|
|
confirmed: confirmed,
|
|
unconfirmed: unconfirmed,
|
|
total: confirmed + unconfirmed
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
/**
|
|
* @param {WalletID?} id
|
|
* @param {Number} age - Age delta (delete transactions older than `now - age`).
|
|
* @param {Function} callback
|
|
*/
|
|
|
|
TXDB.prototype.zap = function zap(id, age, callback, force) {
|
|
var self = this;
|
|
var unlock;
|
|
|
|
if (typeof age === 'function') {
|
|
force = callback;
|
|
callback = age;
|
|
age = id;
|
|
id = null;
|
|
}
|
|
|
|
unlock = this._lock(zap, [id, age, callback], force);
|
|
|
|
if (!unlock)
|
|
return;
|
|
|
|
callback = utils.wrap(callback, unlock);
|
|
|
|
if (!utils.isNumber(age))
|
|
return callback(new Error('Age must be a number.'));
|
|
|
|
return this.getRange(id, {
|
|
start: 0,
|
|
end: bcoin.now() - age
|
|
}, function(err, txs) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
self.fillHistory(txs, function(err) {
|
|
if (err)
|
|
return callback(err);
|
|
|
|
utils.forEachSerial(txs, function(tx, next) {
|
|
if (tx.ts !== 0)
|
|
return next();
|
|
self.lazyRemove(tx, next, true);
|
|
}, callback);
|
|
});
|
|
});
|
|
};
|
|
|
|
/*
|
|
* Helpers
|
|
*/
|
|
|
|
function uniq(obj) {
|
|
var uniq = {};
|
|
var out = [];
|
|
var i, key, value;
|
|
|
|
for (i = 0; i < obj.length; i++) {
|
|
value = obj[i];
|
|
key = value.id + '/' + value.account;
|
|
|
|
if (uniq[key])
|
|
continue;
|
|
|
|
uniq[key] = true;
|
|
out.push(value);
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
/*
|
|
* Expose
|
|
*/
|
|
|
|
module.exports = TXDB;
|