Improved block sync speed
-A number of functions have been rewritten to be more optimized and faster: calculate_total, is_unique, convert_to_satoshi, get_input_addresses, processVoutAddresses, prepare_vout, prepare_vin -Txes are now written to database via bulk writes which helps improve the sync speed and also controls memory usage with batching to write data once a certain threshold is reached -update_address function changed to update_addresses since it now bulk writes the addresses in batches to improve sync speed and also controls memory usage with batching to write data once a certain threshold is reached -The syncLoop function has been completely removed from the project and replaced with async library loops or even normal "for" loops in some cases which greatly improves sync speeds over large batches of data -Fixed an issue with the flattened count of txes that is saved to the coinstats collection which could save incorrectly when using more than 1 thread -Fixed an issue with the block sync which caused an unwanted delay when syncing less blocks than the amount of threads used to sync the data -Fixed an issue with vout data processing that could sometimes populate data out of order -Added a new sync.batch_size setting used to determine how many records (txes, addresses, addresstxes) should be saved in a single database transaction -Added a new wait_for_bulk_database_save setting used to increase the block sync speed at the cost of not returning any error msgs for data that failed to save -get_input_addresses function no longer returns in the exports section of the explorer.js file since it is only referenced in that file -Updated explorerspec tests to use the newest function changes for any tests that needed to be updated Special thanks to Karzo from Pepecoin for help with the bulkwrite code changes!
This commit is contained in:
Joe Uhren
+348
-138
@@ -8,17 +8,17 @@ const async = require('async');
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let stopSync = false;
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let stackSizeErrorId = null;
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function check_delete_tx(tx, block_height, tx_count, timeout, cb) {
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function check_delete_tx(tx, block_height, timeout, cb) {
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// check if the tx object exists and does not match the current block height
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if (tx && tx.blockindex != block_height) {
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// the transaction exists but does not match the correct block height, therefore it should be deleted
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module.exports.delete_and_cleanup_tx(tx.txid, tx.blockindex, tx_count, timeout, function(updated_tx_count) {
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module.exports.delete_and_cleanup_tx(tx.txid, tx.blockindex, timeout, function(updated_tx_count) {
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// finished removing the transaction
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return cb(updated_tx_count, true);
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});
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} else {
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// tx dosn't exist or block heights match so nothing to do
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return cb(tx_count, false);
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return cb(0, false);
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}
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}
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@@ -71,50 +71,112 @@ function hex_to_ascii(hex) {
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return str;
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}
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function update_address(hash, blockheight, txid, amount, type, cb) {
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let addr_inc = {}
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function update_addresses(addresses, blockheight, txid, cb) {
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const bulkAddresses = addresses.map((address) => {
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return {
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updateOne: {
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filter: { a_id: address.hash },
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update: {
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$setOnInsert: { a_id: address.hash },
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$inc: { sent: address.sent, balance: address.balance, received: address.received },
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},
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upsert: true
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}
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};
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});
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if (hash == 'coinbase')
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addr_inc.sent = amount;
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else {
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if (type == 'vin') {
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addr_inc.sent = amount;
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addr_inc.balance = -amount;
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} else {
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addr_inc.received = amount;
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addr_inc.balance = amount;
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const bulkAddressTxes = addresses
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.filter((address) => address.hash !== 'coinbase')
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.map((address) => {
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return {
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updateOne: {
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filter: { a_id: address.hash, txid: txid },
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update: {
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$setOnInsert: { a_id: address.hash, blockindex: blockheight, txid: txid },
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$inc: { amount: (address.type == 'vin' ? -address.amount : address.amount) }
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},
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upsert: true
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}
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};
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});
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try {
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let completed = 0;
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let errorCalled = false;
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// callback to run when one of the 2 table writes is complete
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function onDone(err) {
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// check if the previous process already returned an error
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if (errorCalled) {
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// stop if there was already an error
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return;
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} else {
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// check if there was an error
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if (err) {
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// ensure the next data set knows there was already an error
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errorCalled = true;
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// return the error
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return cb(err);
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}
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// increment the completed counter
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completed += 1;
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// check if both data sets completed
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if (completed === 2) {
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// finished updating address data
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return cb();
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}
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}
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}
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// start processing both sets of data in parallel
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processInBatches(Address, bulkAddresses, onDone);
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processInBatches(AddressTx, bulkAddressTxes, onDone);
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} catch (err) {
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return cb(err);
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}
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}
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function processInBatches(collection, data, cb) {
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const batch_size = settings.sync.batch_size;
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let index = 0;
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function processNextBatch() {
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// check if all records were saved
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if (index >= data.length) {
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// all records were saved
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return cb();
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}
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// get the next batch of data
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const batch = data.slice(index, index + batch_size);
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// increment the index by the batch size
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index += batch_size;
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try {
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// asynchronously write data to the collection database
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collection.bulkWrite(batch, { ordered: false, writeConcern: { w: (settings.sync.wait_for_bulk_database_save ? 1 : 0) } }).then((result) => {
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// process the next batch of records
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processNextBatch();
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}).catch((err) => {
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console.log(err);
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// process the next batch of records
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processNextBatch();
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});
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} catch(err) {
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console.log(err);
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// process the next batch of records
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processNextBatch();
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}
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}
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Address.findOneAndUpdate({a_id: hash}, {
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$inc: addr_inc
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}, {
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new: true,
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upsert: true
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}).then((address) => {
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if (hash != 'coinbase') {
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AddressTx.findOneAndUpdate({a_id: hash, txid: txid}, {
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$inc: {
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amount: addr_inc.balance
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},
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$set: {
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a_id: hash,
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blockindex: blockheight,
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txid: txid
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}
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}, {
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new: true,
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upsert: true
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}).then((addresstx) => {
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return cb();
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}).catch((err) => {
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return cb(err);
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});
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} else
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return cb();
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}).catch((err) => {
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return cb(err);
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});
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// start processing records
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processNextBatch();
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}
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function finalize_update_tx_db(coin, check_only, end, txes, cb) {
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@@ -143,49 +205,103 @@ function finalize_update_tx_db(coin, check_only, end, txes, cb) {
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module.exports = {
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save_tx: function(txid, blockheight, block, cb) {
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lib.get_rawtransaction(txid, function(tx) {
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if (tx && tx != `${settings.localization.ex_error}: ${settings.localization.check_console}`) {
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lib.prepare_vin(tx, function(vin, tx_type_vin) {
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lib.prepare_vout(tx.vout, txid, vin, ((!settings.blockchain_specific.zksnarks.enabled || typeof tx.vjoinsplit === 'undefined' || tx.vjoinsplit == null) ? [] : tx.vjoinsplit), function(vout, nvin, tx_type_vout) {
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// check if vout is null which indicates an error
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if (vout != null) {
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lib.syncLoop(nvin.length, function (loop) {
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const i = loop.iteration();
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// check if address is inside an array
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if (Array.isArray(nvin[i].addresses)) {
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// extract the address
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nvin[i].addresses = nvin[i].addresses[0];
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}
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update_address(nvin[i].addresses, blockheight, txid, nvin[i].amount, 'vin', function() {
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loop.next();
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});
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}, function() {
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lib.syncLoop(vout.length, function (subloop) {
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const t = subloop.iteration();
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try {
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lib.get_rawtransaction(txid, function(tx) {
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if (tx && tx != `${settings.localization.ex_error}: ${settings.localization.check_console}`) {
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lib.prepare_vin(tx, function(vin, tx_type_vin) {
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lib.prepare_vout(tx.vout, txid, vin, ((!settings.blockchain_specific.zksnarks.enabled || typeof tx.vjoinsplit === 'undefined' || tx.vjoinsplit == null) ? [] : tx.vjoinsplit), function(vout, nvin, tx_type_vout) {
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// check if vout is null which indicates an error
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if (vout != null) {
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let addressBatch = [];
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// add all vin addresses to the batch array
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nvin.forEach(function(input) {
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// check if address is inside an array
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if (Array.isArray(vout[t].addresses)) {
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if (Array.isArray(input.addresses)) {
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// extract the address
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vout[t].addresses = vout[t].addresses[0];
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input.addresses = input.addresses[0];
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}
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if (vout[t].addresses) {
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update_address(vout[t].addresses, blockheight, txid, vout[t].amount, 'vout', function() {
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subloop.next();
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});
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} else
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subloop.next();
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}, function() {
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lib.calculate_total(vout, function(total) {
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var op_return = null;
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var algo = null;
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// check if a vin address exists
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if (input.addresses) {
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const index = lib.is_unique(addressBatch, input.addresses, 'hash');
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let sent = 0;
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let balance = 0;
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if (input.addresses == 'coinbase')
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sent = input.amount;
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else {
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sent = input.amount;
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balance = -input.amount;
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}
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// check if the address already exists in the array
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if (index == -1) {
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// unique address
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addressBatch.push({
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hash: input.addresses,
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amount: input.amount,
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type: 'vin',
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sent: sent,
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balance: balance,
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received: 0
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});
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} else {
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// address already exists
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addressBatch[index].amount += input.amount;
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addressBatch[index].sent += sent;
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addressBatch[index].balance += balance;
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}
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}
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});
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// add all vout addresses to the batch array
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vout.forEach(function(output) {
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// check if address is inside an array
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if (Array.isArray(output.addresses)) {
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// extract the address
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output.addresses = output.addresses[0];
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}
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// check if a vout address exists
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if (output.addresses) {
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const index = lib.is_unique(addressBatch, output.addresses, 'hash');
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const balance = output.amount;
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const received = output.amount;
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// check if the address already exists in the array
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if (index == -1) {
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// unique address
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addressBatch.push({
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hash: output.addresses,
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amount: output.amount,
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type: 'vout',
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sent: 0,
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balance: balance,
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received: received
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});
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} else {
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// address already exists
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addressBatch[index].amount -= output.amount;
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addressBatch[index].balance += balance;
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addressBatch[index].received += received;
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}
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}
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});
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// save the addresses to the database
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update_addresses(addressBatch, blockheight, txid, function(err) {
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if (err)
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return cb(err, false, null);
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else {
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const total = lib.calculate_total(vout);
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let op_return = null;
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let algo = null;
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// check if the op_return value should be decoded and saved
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if (settings.transaction_page.show_op_return) {
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// loop through vout to find the op_return value
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tx.vout.forEach(function (vout_data) {
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tx.vout.forEach(function(vout_data) {
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// check if the op_return value exists
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if (vout_data.scriptPubKey != null && vout_data.scriptPubKey.asm != null && vout_data.scriptPubKey.asm.indexOf('OP_RETURN') > -1) {
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// decode the op_return value
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@@ -200,7 +316,8 @@ module.exports = {
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algo = block[settings.block_page.multi_algorithm.key_name];
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}
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const newTx = new Tx({
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// return the transaction data
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return cb(null, vout.length > 0, new Tx({
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txid: tx.txid,
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vin: (vin == null || vin.length == 0 ? [] : nvin),
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vout: vout,
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@@ -211,30 +328,27 @@ module.exports = {
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tx_type: (tx_type_vout == null ? tx_type_vin : tx_type_vout),
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op_return: op_return,
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algo: algo
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});
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newTx.save().then(() => {
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return cb(null, vout.length > 0);
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}).catch((err) => {
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return cb(err, false);
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});
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});
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}));
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}
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});
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});
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} else {
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// create a custom error that will be specifically checked for later (NOTE: tx_type_vout contains the error code in this special case)
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const customError = new Error(tx_type_vout);
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} else {
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// create a custom error that will be specifically checked for later
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// NOTE: tx_type_vout contains the error code in this special case
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const customError = new Error(tx_type_vout);
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customError.code = tx_type_vout;
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customError.code = tx_type_vout;
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// return the custom error
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return cb(customError, false);
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}
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// return the custom error
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return cb(customError, false, null);
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}
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});
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});
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});
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} else
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return cb('tx not found: ' + txid, false);
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});
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} else
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return cb('tx not found: ' + txid, false, null);
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});
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} catch(err) {
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return cb(`Error querying database for txid ${txid}: ${err}`, false, null);
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}
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},
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// updates tx & address balances
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@@ -329,6 +443,84 @@ module.exports = {
|
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lib.get_block(blockhash, function(block) {
|
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if (block) {
|
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let tx_counter = 0;
|
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let txBatch = [];
|
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|
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// create a queue for batching txes for this block
|
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const txBatchQueue = async.queue(function(tx, done) {
|
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// add the tx to an array
|
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txBatch.push(tx);
|
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|
||||
// check if the batch of txes should be saved
|
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if (txBatch.length >= settings.sync.batch_size) {
|
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// save the current batch of txes to the database now
|
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flushTxBatch(done);
|
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} else {
|
||||
// continue without saving txes
|
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done();
|
||||
}
|
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}, 1);
|
||||
|
||||
// add a function used to bulkWrite txes to the database
|
||||
function flushTxBatch(txBatchCallback) {
|
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// copy current batch of txes to a local variable
|
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const localTxBatch = txBatch;
|
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|
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// clear the global array of batched txes
|
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txBatch = [];
|
||||
|
||||
// check if there are actually any txes to save
|
||||
if (!localTxBatch || localTxBatch.length === 0) {
|
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// no txes to save
|
||||
return txBatchCallback();
|
||||
} else {
|
||||
// get the transaction batch ready to bulk update
|
||||
const bulkTxes = localTxBatch.map(tx => {
|
||||
// convert tx to plain JS object
|
||||
const plainTx = tx.toObject();
|
||||
|
||||
// remove the _id field to prevent issues with some blockchains that can reuse non-standard txids
|
||||
delete plainTx._id;
|
||||
|
||||
return {
|
||||
updateOne: {
|
||||
filter: { txid: plainTx.txid },
|
||||
update: [
|
||||
{
|
||||
$replaceWith: {
|
||||
$cond: {
|
||||
if: { $gt: [ plainTx.blockindex, { $ifNull: ["$blockindex", -1] } ] },
|
||||
then: {
|
||||
$mergeObjects: [
|
||||
// if a doc exists, keep that _id
|
||||
{ _id: "$_id" },
|
||||
// overwrite everything else with plainTx
|
||||
plainTx
|
||||
]
|
||||
},
|
||||
else: "$$ROOT"
|
||||
}
|
||||
}
|
||||
}
|
||||
],
|
||||
upsert: true
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
try {
|
||||
// write the transactions to the database
|
||||
Tx.bulkWrite(bulkTxes, { ordered: false, writeConcern: { w: (settings.sync.wait_for_bulk_database_save ? 1 : 0) } }).then(() => {
|
||||
return txBatchCallback();
|
||||
}).catch((err) => {
|
||||
console.log(err);
|
||||
return txBatchCallback();
|
||||
});
|
||||
} catch(err) {
|
||||
console.log(err);
|
||||
return txBatchCallback();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// loop through all txes in this block
|
||||
async.eachLimit(block.tx, parallel_tasks, function(txid, next_tx) {
|
||||
@@ -350,42 +542,54 @@ module.exports = {
|
||||
}, timeout);
|
||||
} else {
|
||||
// check if the transaction exists but doesn't match the current block height
|
||||
check_delete_tx(tx, block_height, txes, timeout, function(updated_txes, tx_deleted) {
|
||||
check_delete_tx(tx, block_height, timeout, function(updated_txes, tx_deleted) {
|
||||
// update the running tx count
|
||||
txes = updated_txes;
|
||||
txes += updated_txes;
|
||||
|
||||
// check if this tx should be added to the local database
|
||||
if (tx_deleted || !tx) {
|
||||
// save the transaction to local database
|
||||
module.exports.save_tx(txid, block_height, block, function(err, tx_has_vout) {
|
||||
module.exports.save_tx(txid, block_height, block, function(err, tx_has_vout, newTx) {
|
||||
if (err) {
|
||||
// check the error code
|
||||
if (err.code == 'StackSizeError') {
|
||||
// ensure the process halts after stopping all sync threads
|
||||
stackSizeErrorId = txid;
|
||||
} else if (err.code === 11000) {
|
||||
// output a nicer error msg for the 11000 error code "duplicate key error collection" which can happen in some blockchains with non-standard txids being reused
|
||||
console.log(`${settings.localization.ex_warning}: ${block_height}: ${txid} already exists`);
|
||||
} else
|
||||
console.log(err);
|
||||
}
|
||||
else
|
||||
|
||||
setTimeout(function() {
|
||||
tx = null;
|
||||
tx_counter--;
|
||||
|
||||
// check if the script is stopping
|
||||
if ((stopSync && check_only != 2) || stackSizeErrorId) {
|
||||
// stop the loop
|
||||
next_tx({});
|
||||
} else
|
||||
next_tx();
|
||||
}, timeout);
|
||||
} else {
|
||||
console.log('%s: %s', block_height, txid);
|
||||
|
||||
if (tx_has_vout)
|
||||
txes++;
|
||||
if (tx_has_vout)
|
||||
txes++;
|
||||
|
||||
setTimeout(function() {
|
||||
tx = null;
|
||||
tx_counter--;
|
||||
// add the tx to a queue
|
||||
txBatchQueue.push(newTx, function(queue_err) {
|
||||
setTimeout(function() {
|
||||
tx = null;
|
||||
tx_counter--;
|
||||
|
||||
// check if the script is stopping
|
||||
if ((stopSync && check_only != 2) || stackSizeErrorId) {
|
||||
// stop the loop
|
||||
next_tx({});
|
||||
} else
|
||||
next_tx();
|
||||
}, timeout);
|
||||
// check if the script is stopping
|
||||
if ((stopSync && check_only != 2) || stackSizeErrorId) {
|
||||
// stop the loop
|
||||
next_tx({});
|
||||
} else
|
||||
next_tx();
|
||||
}, timeout);
|
||||
});
|
||||
}
|
||||
});
|
||||
} else {
|
||||
// skip adding the current tx
|
||||
@@ -437,22 +641,28 @@ module.exports = {
|
||||
blockhash = null;
|
||||
block = null;
|
||||
|
||||
// reset the slot in the block array back to 0
|
||||
block_numbers[slotIndex] = 0;
|
||||
// save the remaining txes for this block
|
||||
flushTxBatch(function(batch_err) {
|
||||
if (batch_err)
|
||||
console.error(batch_err);
|
||||
|
||||
// check if the script is stopping
|
||||
if ((stopSync && check_only != 2) || stackSizeErrorId) {
|
||||
// stop the loop
|
||||
finished_tasks++;
|
||||
next_block({});
|
||||
} else {
|
||||
// check if the last block is finished or in process and increment the finished counter
|
||||
if (processed_last_block)
|
||||
// reset the slot in the block array back to 0
|
||||
block_numbers[slotIndex] = 0;
|
||||
|
||||
// check if the script is stopping
|
||||
if ((stopSync && check_only != 2) || stackSizeErrorId) {
|
||||
// stop the loop
|
||||
finished_tasks++;
|
||||
next_block({});
|
||||
} else {
|
||||
// check if the last block is finished or in process and increment the finished counter
|
||||
if (processed_last_block)
|
||||
finished_tasks++;
|
||||
|
||||
// proceed to next block
|
||||
next_block();
|
||||
}
|
||||
// proceed to next block
|
||||
next_block();
|
||||
}
|
||||
});
|
||||
}
|
||||
}, timeout);
|
||||
});
|
||||
@@ -516,7 +726,7 @@ module.exports = {
|
||||
// check if all threads have properly finished or else the retry limit has been reached
|
||||
// NOTE: the retry limit should never need to be used but is put in place to prevent an
|
||||
// infinite loop just in case something goes very wrong
|
||||
if (finished_tasks === parallel_tasks || retryAttempts >= retryLimit) {
|
||||
if (finished_tasks === ((end - start + 1) >= parallel_tasks ? parallel_tasks : (end - start + 1)) || retryAttempts >= retryLimit) {
|
||||
// stop waiting for all threads to finish
|
||||
clearInterval(handle);
|
||||
|
||||
@@ -539,7 +749,9 @@ module.exports = {
|
||||
});
|
||||
},
|
||||
|
||||
delete_and_cleanup_tx: function(txid, block_height, tx_count, timeout, cb) {
|
||||
delete_and_cleanup_tx: function(txid, block_height, timeout, cb) {
|
||||
let tx_count = 0;
|
||||
|
||||
// lookup all address tx records associated with the current tx
|
||||
AddressTx.find({txid: txid}).exec().then((address_txes) => {
|
||||
if (address_txes.length == 0) {
|
||||
@@ -704,14 +916,12 @@ module.exports = {
|
||||
}
|
||||
|
||||
// loop through the address txes
|
||||
lib.syncLoop(addressTxArray.length, function(address_loop) {
|
||||
var a = address_loop.iteration();
|
||||
|
||||
async.eachSeries(addressTxArray, function(addressTx, address_loop) {
|
||||
// fix the balance, sent and received data for the current address
|
||||
fix_address_data(addressTxArray[a], function() {
|
||||
fix_address_data(addressTx, function() {
|
||||
setTimeout(function() {
|
||||
// move to the next address record
|
||||
address_loop.next();
|
||||
address_loop();
|
||||
}, timeout);
|
||||
});
|
||||
}, function() {
|
||||
|
||||
Reference in New Issue
Block a user