387 lines
9.6 KiB
JavaScript
387 lines
9.6 KiB
JavaScript
'use strict';
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require('classtool');
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function spec() {
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var mongoose = require('mongoose');
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var util = require('util');
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var RpcClient = require('bitcore/RpcClient').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 Block = require('../app/models/Block');
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var Transaction = require('../app/models/Transaction');
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var TransactionItem = require('../app/models/TransactionItem');
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var sockets = require('../app/views/sockets/main.js');
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var CONCURRENCY = 5;
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function Sync(config) {
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this.tx_count = 0;
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this.block_count= 0;
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this.block_total= 0;
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this.network = config.networkName === 'testnet' ? networks.testnet: networks.livenet;
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}
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var progress_bar = function(string, current, total) {
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console.log(util.format('\t%s %d/%d [%d%%]', string, current, total, parseInt(100 * current / total)));
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};
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Sync.prototype.getPrevNextBlock = function(blockHash, blockEnd, opts, cb) {
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var that = this;
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// recursion end.
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if (!blockHash || (blockEnd && blockEnd == blockHash) ) {
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console.log("Reach end:", blockHash, blockEnd);
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return cb();
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}
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var existed = 0;
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var blockInfo;
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var blockObj;
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async.series([
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// Already got it?
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function(c) {
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Block.findOne({hash:blockHash}, function(err,block){
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if (err) { console.log(err); return c(err); };
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if (block) {
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existed = 1;
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blockObj = block;
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}
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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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if (that.block_count++ % 1000 === 0) {
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progress_bar('Historic sync status:', that.block_count, that.block_total);
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}
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return c();
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},
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//get Info from RPC
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function(c) {
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// TODO: if we store prev/next, no need to go to RPC
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// if (blockObj && blockObj.nextBlockHash) return c();
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that.rpc.getBlock(blockHash, function(err, ret) {
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if (err) return c(err);
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blockInfo = ret;
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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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that.storeBlock(blockInfo.result, function(err, block) {
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existed = err && err.toString().match(/E11000/);
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if (err && ! existed) return c(err);
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return c();
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});
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},
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/* TODO: Should Start to sync backwards? (this is for partial syncs)
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function(c) {
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if (blockInfo.result.prevblockhash != current.blockHash) {
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console.log("reorg?");
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opts.prev = 1;
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}
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return c();
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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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console.log("ERROR: @%s: %s [count: block_count: %d]", blockHash, err, that.block_count);
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if (blockInfo && blockInfo.result) {
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if (opts.prev && blockInfo.result.previousblockhash) {
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return that.getPrevNextBlock(blockInfo.result.previousblockhash, blockEnd, opts, cb);
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}
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if (opts.next && blockInfo.result.nextblockhash)
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return that.getPrevNextBlock(blockInfo.result.nextblockhash, blockEnd, opts, cb);
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}
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return cb(err);
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});
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};
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Sync.prototype.storeBlock = function(block, cb) {
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var that = this;
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Block.customCreate(block, function(err, block, inserted_txs){
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if (block && that.opts.broadcast_blocks) {
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sockets.broadcast_block(block);
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}
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if (inserted_txs && that.opts.broadcast_txs) {
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inserted_txs.forEach(function(tx) {
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sockets.broadcast_tx(tx);
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});
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}
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if (inserted_txs)
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that.tx_count += inserted_txs.length;
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return cb();
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});
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};
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Sync.prototype.storeTxs = function(txs, inTime, cb) {
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var that = this;
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var time = inTime ? inTime : Math.round(new Date().getTime() / 1000);
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Transaction.createFromArray(txs, time, function(err, inserted_txs) {
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if (!err && inserted_txs && that.opts.broadcast_txs) {
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inserted_txs.forEach(function(tx) {
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sockets.broadcast_tx(tx);
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});
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}
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return cb(err);
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});
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};
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Sync.prototype.syncBlocks = function(start, end, isForward, cb) {
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var that = this;
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console.log('Syncing Blocks, starting \n\tfrom: %s \n\tend: %s \n\tisForward:',
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start, end, isForward);
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return that.getPrevNextBlock( start, end,
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isForward ? { next: 1 } : { prev: 1}, cb);
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};
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// This is not currently used. Transactions are represented by txid only
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// in mongodb
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Sync.prototype.syncTXs = function(cb) {
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var that = this;
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console.log('Syncing TXs...');
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Transaction.find({
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blockhash: null
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},
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function(err, txs) {
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if (err) return cb(err);
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var read = 0;
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var pull = 0;
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var write = 0;
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var total = txs.length;
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console.log('\tneed to pull %d txs', total);
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if (!total) return cb();
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async.each(txs, function(tx, next) {
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if (!tx.txid) {
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console.log('NO TXID skipping...', tx);
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return next();
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}
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if (read++ % 1000 === 0) progress_bar('read', read, total);
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that.rpc.getRawTransaction(tx.txid, 1, function(err, txInfo) {
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if (pull++ % 1000 === 0) progress_bar('\tpull', pull, total);
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if (!err && txInfo) {
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Transaction.update({
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txid: tx.txid
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},
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txInfo.result, function(err) {
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if (err) return next(err);
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if (write++ % 1000 === 0) progress_bar('\t\twrite', write, total);
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return next();
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});
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}
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else return next();
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});
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},
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function(err) {
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if (err) return cb(err);
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return cb(err);
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});
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});
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};
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// Not used
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Sync.prototype.processTXs = function(reindex, cb) {
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var that = this;
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console.log('Syncing TXs...');
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var filter = reindex ? {} : { processed: false } ;
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Transaction.find(filter, function(err, txs) {
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if (err) return cb(err);
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var read = 0,
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pull = 0,
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proc = 0,
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total = txs.length;
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console.log('\tneed to pull %d txs', total);
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if (!total) return cb();
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async.forEachLimit(txs, CONCURRENCY, function(tx, next) {
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if (read++ % 1000 === 0) progress_bar('read', read, total);
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if (!tx.txid) {
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console.log('NO TXID skipping...', tx);
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return next();
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}
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// This will trigger an RPC call
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Transaction.explodeTransactionItems( tx.txid, tx.time, function(err) {
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if (proc++ % 1000 === 0) progress_bar('\tproc', pull, total);
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next(err);
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});
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},
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cb);
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});
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};
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Sync.prototype.init = function(opts) {
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this.rpc = new RpcClient(config.bitcoind);
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if (!(opts && opts.skip_db_connection) && !mongoose.connection) {
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mongoose.connect(config.db, {server: {auto_reconnect: true}} );
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}
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this.opts = opts;
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this.db = mongoose.connection;
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this.db.on('error', function(err) {
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console.log('connection error:' + err);
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mongoose.disconnect();
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});
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this.db.on('disconnect', function(err) {
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console.log('disconnect:' + err);
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mongoose.connect(config.db, {server: {auto_reconnect: true}} );
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});
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};
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Sync.prototype.import_history = function(opts, next) {
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var that = this;
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var retry_attemps = 100;
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var retry_secs = 2;
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var block_best;
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this.db.once('open', function() {
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async.series([
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function(cb) {
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if (opts.destroy) {
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console.log('Deleting Blocks...');
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that.db.collections.blocks.drop(cb);
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} else {
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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 (opts.destroy) {
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console.log('Deleting TXs...');
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that.db.collections.transactions.drop(cb);
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} else {
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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 (opts.destroy) {
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console.log('Deleting TXItems...');
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that.db.collections.transactionitems.drop(cb);
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} else {
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return cb();
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}
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},
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function(cb) {
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that.rpc.getInfo(function(err, res) {
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if (err) cb(err);
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that.block_total = res.result.blocks;
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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 (!opts.reverse) return cb();
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that.rpc.getBestBlockHash(function(err, res) {
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if (err) cb(err);
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block_best = res.result;
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return cb();
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});
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},
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], function(err) {
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function sync() {
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var start, end, isForward;
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if (opts.reverse) {
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start = block_best;
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end = that.network.genesisBlock.hash.reverse().toString('hex');
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isForward = false;
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}
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else {
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start = that.network.genesisBlock.hash.reverse().toString('hex');
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end = null;
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isForward = true;
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}
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that.syncBlocks(start, end, isForward, function(err) {
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if (err && err.message.match(/ECONNREFUSED/) && retry_attemps--){
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setTimeout(function() {
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console.log("Retrying in %d secs ", retry_secs);
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sync();
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}, retry_secs * 1000);
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}
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else {
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return next(err, that.block_count);
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}
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});
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}
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if (!opts.skip_blocks) {
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sync();
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}
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});
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});
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};
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Sync.prototype.close = function() {
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this.db.close();
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};
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return Sync;
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}
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module.defineClass(spec);
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