478 lines
12 KiB
JavaScript
478 lines
12 KiB
JavaScript
'use strict';
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require('classtool');
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function spec() {
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var util = require('util');
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var RpcClient = require('bitcore/RpcClient').class();
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var Script = require('bitcore/Script').class();
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var networks = require('bitcore/networks');
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var async = require('async');
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var config = require('../config/config');
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var Sync = require('./Sync').class();
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var sockets = require('../app/controllers/socket.js');
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var BlockExtractor = require('./BlockExtractor.js').class();
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//var Deserialize = require('bitcore/Deserialize');
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var BAD_GEN_ERROR = 'Bad genesis block. Network mismatch between Insight and bitcoind? Insight is configured for:';
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function HistoricSync() {
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this.network = config.network === 'testnet' ? networks.testnet: networks.livenet;
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var genesisHashReversed = new Buffer(32);
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this.network.genesisBlock.hash.copy(genesisHashReversed);
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this.genesis = genesisHashReversed.reverse().toString('hex');
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//available status: starting / syncing / finished / aborted
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this.status = 'starting';
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this.error = null;
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this.syncPercentage = 0;
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this.syncedBlocks = 0;
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this.orphanBlocks = 0;
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this.type ='';
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}
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function p() {
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var args = [];
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Array.prototype.push.apply(args, arguments);
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args.unshift('[historic_sync]');
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/*jshint validthis:true */
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console.log.apply(this, args);
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}
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HistoricSync.prototype.setError = function(err) {
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var self = this;
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self.error = err.toString();
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self.status='error';
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self.showProgress();
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};
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HistoricSync.prototype.init = function(opts, cb) {
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var self = this;
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self.opts = opts;
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self.rpc = new RpcClient(config.bitcoind);
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self.sync = new Sync(opts);
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self.sync.init(opts, function(err) {
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if (err) {
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self.setError(err);
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return cb(err);
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}
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else {
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// check testnet?
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self.rpc.getBlockHash(0, function(err, res){
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if (!err && ( res && res.result !== self.genesis)) {
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err = new Error(BAD_GEN_ERROR + config.network);
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self.setError(err);
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}
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if (err) self.setError(err);
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return cb(err);
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});
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}
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});
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};
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HistoricSync.prototype.close = function() {
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this.sync.close();
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};
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HistoricSync.prototype.info = function() {
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this.updatePercentage();
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return {
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status: this.status,
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blockChainHeight: this.blockChainHeight,
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syncPercentage: this.syncPercentage,
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syncedBlocks: this.syncedBlocks,
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orphanBlocks: this.orphanBlocks,
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syncTipHash: this.sync.tip,
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error: this.error,
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type: this.type,
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};
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};
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HistoricSync.prototype.updatePercentage = function() {
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var r = this.syncedBlocks / this.blockChainHeight;
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this.syncPercentage = parseFloat(100 * r).toFixed(3);
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if (this.syncPercentage > 100) this.syncPercentage = 100;
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};
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HistoricSync.prototype.showProgress = function() {
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var self = this;
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if ( self.status ==='syncing' &&
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( self.syncedBlocks ) % self.step !== 1) return;
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if (self.error) {
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p('ERROR: ' + self.error);
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}
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else {
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self.updatePercentage();
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p(util.format('status: [%d%%]', self.syncPercentage));
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}
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if (self.opts.shouldBroadcastSync) {
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sockets.broadcastSyncInfo(self.info());
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}
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//TODO
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// if (self.syncPercentage > 10) {
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// process.exit(-1);
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// }
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};
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HistoricSync.prototype.getPrevNextBlock = function(blockHash, blockEnd, scanOpts, cb) {
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var self = this;
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// recursion end.
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if (!blockHash) return cb();
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var existed = false;
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var blockInfo;
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async.series([
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// Already got it?
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function(c) {
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self.sync.bDb.has(blockHash, function(err, ret) {
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if (err) {
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p(err);
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return c(err);
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}
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if (ret) existed = true;
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return c();
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});
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},
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//show some (inacurate) status
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function(c) {
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self.showProgress();
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return c();
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},
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function(c) {
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self.rpc.getBlock(blockHash, function(err, ret) {
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if (err) return c(err);
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if (ret) {
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blockInfo = ret.result;
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// this is to match block retreived from file
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if (blockInfo.hash === self.genesis)
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blockInfo.previousblockhash = self.network.genesisBlock.prev_hash.toString('hex');
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}
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else {
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blockInfo = null;
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}
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return c();
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});
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},
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//store it
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function(c) {
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if (existed) return c();
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// When storing files from RPC recusively, reorgs are disabled
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self.sync.storeTipBlock(blockInfo, false, function(err) {
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return c(err);
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});
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}], function(err) {
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if (err) {
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self.setError(util.format('ERROR: @%s: %s [count: syncedBlocks: %d]',
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blockHash, err, self.syncedBlocks));
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return cb(err);
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}
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else {
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self.status = 'syncing';
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}
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if ( blockEnd && blockEnd === blockHash) {
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p('blockEnd found!:' + blockEnd);
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self.found=1;
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}
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if ( self.found && self.syncedBlocks >= self.blockChainHeight ) {
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self.status = 'finished';
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p('DONE. Height: ' , self.syncedBlocks);
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return cb(err);
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}
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// Continue
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if (blockInfo) {
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self.syncedBlocks++;
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// recursion
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if (scanOpts.prev && blockInfo.previousblockhash)
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return self.getPrevNextBlock(blockInfo.previousblockhash, blockEnd, scanOpts, cb);
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if (scanOpts.next && blockInfo.nextblockhash)
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return self.getPrevNextBlock(blockInfo.nextblockhash, blockEnd, scanOpts, cb);
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}
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return cb(err);
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});
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};
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HistoricSync.prototype.getBlockFromFile = function(cb) {
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var self = this;
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var blockInfo;
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//get Info
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self.blockExtractor.getNextBlock(function(err, b) {
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if (err || ! b) return cb(err);
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blockInfo = b.getStandardizedObject(b.txs, self.network);
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// blockInfo.curWork = Deserialize.intFromCompact(b.bits);
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// We keep the RPC field names
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blockInfo.previousblockhash = blockInfo.prev_block;
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var ti=0;
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// Get TX Address
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b.txs.forEach(function(t) {
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var objTx = blockInfo.tx[ti++];
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//add time from block
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objTx.time = blockInfo.time;
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var to=0;
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t.outs.forEach( function(o) {
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var s = new Script(o.s);
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var addrs = self.sync.getAddrStr(s);
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// support only for p2pubkey p2pubkeyhash and p2sh
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if (addrs.length === 1) {
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objTx.out[to].addrStr = addrs[0];
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}
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to++;
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});
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});
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return cb(err,blockInfo);
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});
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};
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HistoricSync.prototype.nextBlockFromFile = function(scanOpts, cb) {
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var self = this;
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self.showProgress();
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self.getBlockFromFile(function(err, blockInfo) {
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if (err) {
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self.setError(util.format('ERROR: @%s: %s [count: syncedBlocks: %d]',
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blockInfo ? blockInfo.hash : '-', err, self.syncedBlocks));
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return cb(err);
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}
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self.sync.storeTipBlock(blockInfo, function(err) {
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if (blockInfo && blockInfo.hash) {
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self.syncedBlocks++;
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} else
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self.status = 'finished';
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if (err) {
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self.setError(util.format('ERROR: @%s: %s [count: syncedBlocks: %d]',
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blockInfo ? blockInfo.hash : '-', err, self.syncedBlocks));
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}
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return cb(err);
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});
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});
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};
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HistoricSync.prototype.countNotOrphan = function(cb) {
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var self = this;
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if (self.notOrphanCount) return cb(null, self.notOrphanCount);
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self.sync.bDb.countNotOrphan(function(err, count) {
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if (err) return cb(err);
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self.notOrphanCount = count;
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return cb(null, self.notOrphanCount);
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});
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};
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HistoricSync.prototype.getBlockCount = function(cb) {
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var self = this;
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if (self.blockChainHeight) return cb();
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self.rpc.getBlockCount(function(err, res) {
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if (err) return cb(err);
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self.blockChainHeight = res.result;
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return cb();
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});
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};
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HistoricSync.prototype.importHistory = function(scanOpts, next) {
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var self = this;
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var lastBlock;
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var tip;
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async.series([
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function(cb) {
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if (scanOpts.destroy) {
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p('Deleting DB...');
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return self.sync.destroy(cb);
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}
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return cb();
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},
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// We are not using getBestBlockHash, because is not available in all clients
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function (cb) { return self.getBlockCount(cb); },
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function(cb) {
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if (!scanOpts.reverse) return cb();
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self.rpc.getBlockHash(self.blockChainHeight, function(err, res) {
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if (err) return cb(err);
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lastBlock = res.result;
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return cb();
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});
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},
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function(cb) {
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if (!scanOpts.reverse) return cb();
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self.sync.bDb.getTip(function(err, res) {
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if (err) return cb(err);
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tip = res;
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console.log('Old Tip:', tip);
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return cb();
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});
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},
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function(cb) {
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if (scanOpts.reverse) {
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self.countNotOrphan(function(err, count) {
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if (err) return cb(err);
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self.syncedBlocks = count || 0;
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return cb();
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});
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}
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else {
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return cb();
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}
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},
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], function(err) {
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if (err) {
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self.setError(err);
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return next(err, 0);
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}
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// SETUP Sync params
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var start, end;
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if (!self.step) {
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var step = parseInt( (self.blockChainHeight - self.syncedBlocks) / 1000);
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if (self.opts.progressStep) {
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step = self.opts.progressStep;
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}
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if (step < 10) step = 10;
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self.step = step;
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}
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if (scanOpts.reverse) {
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start = lastBlock;
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end = tip || self.genesis;
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scanOpts.prev = true;
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}
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else {
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start = self.genesis;
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end = null;
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scanOpts.next = true;
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}
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p('Starting from: ', start);
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p(' to : ', end);
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p(' scanOpts: ', JSON.stringify(scanOpts));
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if (scanOpts.fromFiles) {
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self.status = 'syncing';
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self.type = 'from .dat Files';
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async.whilst(function() {
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return self.status === 'syncing';
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}, function (w_cb) {
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self.nextBlockFromFile(scanOpts, function(err) {
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setImmediate(function(){
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return w_cb(err);
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});
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});
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}, function(err) {
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self.showProgress();
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return next(err);
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});
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}
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else {
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self.type = 'from RPC calls';
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self.getPrevNextBlock(start, end, scanOpts, function(err) {
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self.showProgress();
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return next(err);
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});
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}
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});
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};
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// upto if we have genesis block?
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HistoricSync.prototype.smartImport = function(scanOpts, next) {
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var self = this;
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self.sync.bDb.has(self.genesis, function(err, b) {
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if (err) return next(err);
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self.countNotOrphan(function(err, count) {
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if (err) return next(err);
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self.getBlockCount(function(err) {
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if (err) return next(err);
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if (!b || scanOpts.destroy || count < self.blockChainHeight * 0.8 ) {
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if (!b)
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p('Could not find Genesis block. Running FULL SYNC');
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else
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p('Less that 80% of current blockchain is stored. Running FULL SYNC',
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parseInt(count/self.blockChainHeight*100));
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if (config.bitcoind.dataDir) {
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p('bitcoind dataDir configured...importing blocks from .dat files');
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scanOpts.fromFiles = true;
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self.blockExtractor = new BlockExtractor(config.bitcoind.dataDir, config.network);
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}
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else {
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scanOpts.reverse = true;
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}
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}
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else {
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p('Genesis block found. Syncing upto old TIP.');
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p('Got ' + count + ' out of ' + self.blockChainHeight + ' blocks');
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scanOpts.reverse = true;
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}
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return self.importHistory(scanOpts, next);
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});
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});
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});
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};
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return HistoricSync;
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}
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module.defineClass(spec);
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