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Elements blockchain parser. Save all peg in/out i the database.

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softsimon 2021-09-18 13:37:25 +04:00
parent 641d2ad028
commit aa39bbd091
No known key found for this signature in database
GPG Key ID: 488D7DCFB5A430D7
7 changed files with 162 additions and 6 deletions
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10
backend/src/api/bitcoin/bitcoin-api.interface.ts
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@ -72,7 +72,7 @@ export namespace IBitcoinApi {
time: number; // (numeric) Same as blocktime
}
interface Vin {
export interface Vin {
txid?: string; // (string) The transaction id
vout?: number; // (string)
scriptSig?: { // (json object) The script
@ -82,18 +82,22 @@ export namespace IBitcoinApi {
sequence: number; // (numeric) The script sequence number
txinwitness?: string[]; // (string) hex-encoded witness data
coinbase?: string;
is_pegin?: boolean; // (boolean) Elements peg-in
}
interface Vout {
export interface Vout {
value: number; // (numeric) The value in BTC
n: number; // (numeric) index
asset?: string; // (string) Elements asset id
scriptPubKey: { // (json object)
asm: string; // (string) the asm
hex: string; // (string) the hex
reqSigs?: number; // (numeric) The required sigs
type: string; // (string) The type, eg 'pubkeyhash'
addresses?: string[]; // (string) bitcoin addresses
address?: string; // (string) bitcoin address
addresses?: string[]; // (string) bitcoin addresses
pegout_chain?: string; // (string) Elements peg-out chain
pegout_addresses?: string[]; // (string) Elements peg-out addresses
};
}

2
backend/src/api/common.ts
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@ -1,6 +1,8 @@
import { CpfpInfo, TransactionExtended, TransactionStripped } from '../mempool.interfaces';
import config from '../config';
export class Common {
static nativeAssetId = '6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d';
static median(numbers: number[]) {
let medianNr = 0;
const numsLen = numbers.length;

105
backend/src/api/liquid/elements-parser.ts Normal file
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@ -0,0 +1,105 @@
import { IBitcoinApi } from '../bitcoin/bitcoin-api.interface';
import bitcoinClient from '../bitcoin/bitcoin-client';
import bitcoinSecondClient from '../bitcoin/bitcoin-second-client';
import { Common } from '../common';
import { DB } from '../../database';
import logger from '../../logger';
class ElementsParser {
isRunning = false;
constructor() { }
public async $parse() {
if (this.isRunning) {
return;
}
this.isRunning = true;
const result = await bitcoinClient.getChainTips();
const tip = result[0].height;
const latestBlock = await this.$getLatestBlockFromDatabase();
for (let height = latestBlock.block + 1; height <= tip; height++) {
const blockHash: IBitcoinApi.ChainTips = await bitcoinClient.getBlockHash(height);
const block: IBitcoinApi.Block = await bitcoinClient.getBlock(blockHash, 2);
await this.$parseBlock(block);
await this.$saveLatestBlockToDatabase(block.height, block.time, block.hash);
}
this.isRunning = false;
}
public async $getPegDataByMonth(): Promise<any> {
const connection = await DB.pool.getConnection();
const query = `SELECT SUM(amount) AS amount, DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y-%m-01') AS date FROM elements_pegs GROUP BY DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y%m')`;
const [rows] = await connection.query<any>(query);
connection.release();
return rows;
}
protected async $parseBlock(block: IBitcoinApi.Block) {
for (const tx of block.tx) {
await this.$parseInputs(tx, block);
await this.$parseOutputs(tx, block);
}
}
protected async $parseInputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
for (const [index, input] of tx.vin.entries()) {
if (input.is_pegin) {
await this.$parsePegIn(input, index, tx.txid, block);
}
}
}
protected async $parsePegIn(input: IBitcoinApi.Vin, vindex: number, txid: string, block: IBitcoinApi.Block) {
const bitcoinTx: IBitcoinApi.Transaction = await bitcoinSecondClient.getRawTransaction(input.txid, true);
const prevout = bitcoinTx.vout[input.vout || 0];
const outputAddress = prevout.scriptPubKey.address || (prevout.scriptPubKey.addresses && prevout.scriptPubKey.addresses[0]) || '';
await this.$savePegToDatabase(block.height, block.time, prevout.value * 100000000, txid, vindex,
outputAddress, bitcoinTx.txid, prevout.n, 1);
}
protected async $parseOutputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
for (const output of tx.vout) {
if (output.scriptPubKey.pegout_chain) {
await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
(output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 0);
}
if (!output.scriptPubKey.pegout_chain && output.scriptPubKey.type === 'nulldata'
&& output.value && output.value > 0 && output.asset && output.asset === Common.nativeAssetId) {
await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
(output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 1);
}
}
}
protected async $savePegToDatabase(height: number, blockTime: number, amount: number, txid: string,
txindex: number, bitcoinaddress: string, bitcointxid: string, bitcoinindex: number, final_tx: number): Promise<void> {
const connection = await DB.pool.getConnection();
const query = `INSERT INTO elements_pegs(
block, datetime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`;
const params: (string | number)[] = [
height, blockTime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
];
await connection.query(query, params);
connection.release();
logger.debug(`Saved L-BTC peg from block height #${height} with TXID ${txid}.`);
}
protected async $getLatestBlockFromDatabase(): Promise<any> {
const connection = await DB.pool.getConnection();
const query = `SELECT block, datetime, block_hash FROM last_elements_block`;
const [rows] = await connection.query<any>(query);
connection.release();
return rows[0];
}
protected async $saveLatestBlockToDatabase(blockHeight: number, datetime: number, blockHash: string) {
const connection = await DB.pool.getConnection();
const query = `UPDATE last_elements_block SET block = ?, datetime = ?, block_hash = ?`;
await connection.query<any>(query, [blockHeight, datetime, blockHash]);
connection.release();
}
}
export default new ElementsParser();

5
backend/src/api/websocket-handler.ts
View File

@ -14,7 +14,6 @@ import transactionUtils from './transaction-utils';
class WebsocketHandler {
private wss: WebSocket.Server | undefined;
private nativeAssetId = '6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d';
private extraInitProperties = {};
constructor() { }
@ -308,7 +307,7 @@ class WebsocketHandler {
newTransactions.forEach((tx) => {
if (client['track-asset'] === this.nativeAssetId) {
if (client['track-asset'] === Common.nativeAssetId) {
if (tx.vin.some((vin) => !!vin.is_pegin)) {
foundTransactions.push(tx);
return;
@ -439,7 +438,7 @@ class WebsocketHandler {
const foundTransactions: TransactionExtended[] = [];
transactions.forEach((tx) => {
if (client['track-asset'] === this.nativeAssetId) {
if (client['track-asset'] === Common.nativeAssetId) {
if (tx.vin && tx.vin.some((vin) => !!vin.is_pegin)) {
foundTransactions.push(tx);
return;

16
backend/src/index.ts
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@ -20,6 +20,7 @@ import logger from './logger';
import backendInfo from './api/backend-info';
import loadingIndicators from './api/loading-indicators';
import mempool from './api/mempool';
import elementsParser from './api/liquid/elements-parser';
class Server {
private wss: WebSocket.Server | undefined;
@ -141,6 +142,15 @@ class Server {
if (this.wss) {
websocketHandler.setWebsocketServer(this.wss);
}
if (config.MEMPOOL.NETWORK === 'liquid') {
blocks.setNewBlockCallback(async () => {
try {
await elementsParser.$parse();
} catch (e) {
logger.warn('Elements parsing error: ' + (e instanceof Error ? e.message : e));
}
});
}
websocketHandler.setupConnectionHandling();
statistics.setNewStatisticsEntryCallback(websocketHandler.handleNewStatistic.bind(websocketHandler));
blocks.setNewBlockCallback(websocketHandler.handleNewBlock.bind(websocketHandler));
@ -254,6 +264,12 @@ class Server {
.get(config.MEMPOOL.API_URL_PREFIX + 'address-prefix/:prefix', routes.getAddressPrefix)
;
}
if (config.MEMPOOL.NETWORK === 'liquid') {
this.app
.get(config.MEMPOOL.API_URL_PREFIX + 'liquid/pegs/month', routes.$getElementsPegsByMonth)
;
}
}
}

10
backend/src/routes.ts
View File

@ -18,6 +18,7 @@ import blocks from './api/blocks';
import loadingIndicators from './api/loading-indicators';
import { Common } from './api/common';
import bitcoinClient from './api/bitcoin/bitcoin-client';
import elementsParser from './api/liquid/elements-parser';
class Routes {
constructor() {}
@ -754,6 +755,15 @@ class Routes {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
public async $getElementsPegsByMonth(req: Request, res: Response) {
try {
const pegs = await elementsParser.$getPegDataByMonth();
res.json(pegs);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
}
export default new Routes();

20
mariadb-structure.sql
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@ -84,3 +84,23 @@ ALTER TABLE `transactions`
ALTER TABLE `statistics`
MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
CREATE TABLE `last_elements_block` (
`block` int(11) NOT NULL,
`datetime` int(11) NOT NULL,
`block_hash` varchar(65) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `last_elements_block` VALUES(0, 0, '');
CREATE TABLE `elements_pegs` (
`block` int(11) NOT NULL,
`datetime` int(11) NOT NULL,
`amount` bigint(20) NOT NULL,
`txid` varchar(65) NOT NULL,
`txindex` int(11) NOT NULL,
`bitcoinaddress` varchar(100) NOT NULL,
`bitcointxid` varchar(65) NOT NULL,
`bitcoinindex` int(11) NOT NULL,
`final_tx` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;