256 lines
7.8 KiB
TypeScript
256 lines
7.8 KiB
TypeScript
const config = require('../../mempool-config.json');
|
|
import * as fs from 'fs';
|
|
import * as request from 'request';
|
|
import { BisqBlocks, BisqBlock, BisqTransaction, BisqStats, BisqTrade } from '../interfaces';
|
|
import { Common } from './common';
|
|
|
|
class Bisq {
|
|
private static BLOCKS_JSON_FILE_PATH = '/all/blocks.json';
|
|
private latestBlockHeight = 0;
|
|
private blocks: BisqBlock[] = [];
|
|
private transactions: BisqTransaction[] = [];
|
|
private transactionIndex: { [txId: string]: BisqTransaction } = {};
|
|
private blockIndex: { [hash: string]: BisqBlock } = {};
|
|
private addressIndex: { [address: string]: BisqTransaction[] } = {};
|
|
private stats: BisqStats = {
|
|
minted: 0,
|
|
burnt: 0,
|
|
addresses: 0,
|
|
unspent_txos: 0,
|
|
spent_txos: 0,
|
|
};
|
|
private price: number = 0;
|
|
private priceUpdateCallbackFunction: ((price: number) => void) | undefined;
|
|
private topDirectoryWatcher: fs.FSWatcher | undefined;
|
|
private subdirectoryWatcher: fs.FSWatcher | undefined;
|
|
|
|
constructor() {}
|
|
|
|
startBisqService(): void {
|
|
this.checkForBisqDataFolder();
|
|
this.loadBisqDumpFile();
|
|
setInterval(this.updatePrice.bind(this), 1000 * 60 * 60);
|
|
this.updatePrice();
|
|
this.startTopDirectoryWatcher();
|
|
this.startSubDirectoryWatcher();
|
|
}
|
|
|
|
getTransaction(txId: string): BisqTransaction | undefined {
|
|
return this.transactionIndex[txId];
|
|
}
|
|
|
|
getTransactions(start: number, length: number): [BisqTransaction[], number] {
|
|
return [this.transactions.slice(start, length + start), this.transactions.length];
|
|
}
|
|
|
|
getBlock(hash: string): BisqBlock | undefined {
|
|
return this.blockIndex[hash];
|
|
}
|
|
|
|
getAddress(hash: string): BisqTransaction[] {
|
|
return this.addressIndex[hash];
|
|
}
|
|
|
|
getBlocks(start: number, length: number): [BisqBlock[], number] {
|
|
return [this.blocks.slice(start, length + start), this.blocks.length];
|
|
}
|
|
|
|
getStats(): BisqStats {
|
|
return this.stats;
|
|
}
|
|
|
|
setPriceCallbackFunction(fn: (price: number) => void) {
|
|
this.priceUpdateCallbackFunction = fn;
|
|
}
|
|
|
|
getLatestBlockHeight(): number {
|
|
return this.latestBlockHeight;
|
|
}
|
|
|
|
private checkForBisqDataFolder() {
|
|
if (!fs.existsSync(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH)) {
|
|
console.log(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Make sure Bisq is running and the config is correct before starting the server.`);
|
|
return process.exit(1);
|
|
}
|
|
}
|
|
|
|
private startTopDirectoryWatcher() {
|
|
if (this.topDirectoryWatcher) {
|
|
this.topDirectoryWatcher.close();
|
|
}
|
|
let fsWait: NodeJS.Timeout | null = null;
|
|
this.topDirectoryWatcher = fs.watch(config.BSQ_BLOCKS_DATA_PATH, () => {
|
|
if (fsWait) {
|
|
clearTimeout(fsWait);
|
|
}
|
|
if (this.subdirectoryWatcher) {
|
|
this.subdirectoryWatcher.close();
|
|
}
|
|
fsWait = setTimeout(() => {
|
|
console.log(`Bisq restart detected. Resetting both watchers in 3 minutes.`);
|
|
setTimeout(() => {
|
|
this.startTopDirectoryWatcher();
|
|
this.startSubDirectoryWatcher();
|
|
this.loadBisqDumpFile();
|
|
}, 180000);
|
|
}, 15000);
|
|
});
|
|
}
|
|
|
|
private startSubDirectoryWatcher() {
|
|
if (this.subdirectoryWatcher) {
|
|
this.subdirectoryWatcher.close();
|
|
}
|
|
if (!fs.existsSync(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH)) {
|
|
console.log(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Trying to restart sub directory watcher again in 3 minutes.`);
|
|
setTimeout(() => this.startSubDirectoryWatcher(), 180000);
|
|
return;
|
|
}
|
|
let fsWait: NodeJS.Timeout | null = null;
|
|
this.subdirectoryWatcher = fs.watch(config.BSQ_BLOCKS_DATA_PATH + '/all', () => {
|
|
if (fsWait) {
|
|
clearTimeout(fsWait);
|
|
}
|
|
fsWait = setTimeout(() => {
|
|
console.log(`Change detected in the Bisq data folder.`);
|
|
this.loadBisqDumpFile();
|
|
}, 2000);
|
|
});
|
|
}
|
|
|
|
private updatePrice() {
|
|
request('https://markets.bisq.network/api/trades/?market=bsq_btc', { json: true }, (err, res, trades: BisqTrade[]) => {
|
|
if (err) { return console.log(err); }
|
|
|
|
const prices: number[] = [];
|
|
trades.forEach((trade) => {
|
|
prices.push(parseFloat(trade.price) * 100000000);
|
|
});
|
|
prices.sort((a, b) => a - b);
|
|
this.price = Common.median(prices);
|
|
if (this.priceUpdateCallbackFunction) {
|
|
this.priceUpdateCallbackFunction(this.price);
|
|
}
|
|
});
|
|
}
|
|
|
|
private async loadBisqDumpFile(): Promise<void> {
|
|
try {
|
|
const data = await this.loadData();
|
|
await this.loadBisqBlocksDump(data);
|
|
this.buildIndex();
|
|
this.calculateStats();
|
|
} catch (e) {
|
|
console.log('loadBisqDumpFile() error.', e.message);
|
|
}
|
|
}
|
|
|
|
private buildIndex() {
|
|
const start = new Date().getTime();
|
|
this.transactions = [];
|
|
this.transactionIndex = {};
|
|
this.addressIndex = {};
|
|
|
|
this.blocks.forEach((block) => {
|
|
/* Build block index */
|
|
if (!this.blockIndex[block.hash]) {
|
|
this.blockIndex[block.hash] = block;
|
|
}
|
|
|
|
/* Build transactions index */
|
|
block.txs.forEach((tx) => {
|
|
this.transactions.push(tx);
|
|
this.transactionIndex[tx.id] = tx;
|
|
});
|
|
});
|
|
|
|
/* Build address index */
|
|
this.transactions.forEach((tx) => {
|
|
tx.inputs.forEach((input) => {
|
|
if (!this.addressIndex[input.address]) {
|
|
this.addressIndex[input.address] = [];
|
|
}
|
|
if (this.addressIndex[input.address].indexOf(tx) === -1) {
|
|
this.addressIndex[input.address].push(tx);
|
|
}
|
|
});
|
|
tx.outputs.forEach((output) => {
|
|
if (!this.addressIndex[output.address]) {
|
|
this.addressIndex[output.address] = [];
|
|
}
|
|
if (this.addressIndex[output.address].indexOf(tx) === -1) {
|
|
this.addressIndex[output.address].push(tx);
|
|
}
|
|
});
|
|
});
|
|
|
|
const time = new Date().getTime() - start;
|
|
console.log('Bisq data index rebuilt in ' + time + ' ms');
|
|
}
|
|
|
|
private calculateStats() {
|
|
let minted = 0;
|
|
let burned = 0;
|
|
let unspent = 0;
|
|
let spent = 0;
|
|
|
|
this.transactions.forEach((tx) => {
|
|
tx.outputs.forEach((output) => {
|
|
if (output.opReturn) {
|
|
return;
|
|
}
|
|
if (output.txOutputType === 'GENESIS_OUTPUT' || output.txOutputType === 'ISSUANCE_CANDIDATE_OUTPUT' && output.isVerified) {
|
|
minted += output.bsqAmount;
|
|
}
|
|
if (output.isUnspent) {
|
|
unspent++;
|
|
} else {
|
|
spent++;
|
|
}
|
|
});
|
|
burned += tx['burntFee'];
|
|
});
|
|
|
|
this.stats = {
|
|
addresses: Object.keys(this.addressIndex).length,
|
|
minted: minted,
|
|
burnt: burned,
|
|
spent_txos: spent,
|
|
unspent_txos: unspent,
|
|
};
|
|
}
|
|
|
|
private async loadBisqBlocksDump(cacheData: string): Promise<void> {
|
|
const start = new Date().getTime();
|
|
if (cacheData && cacheData.length !== 0) {
|
|
console.log('Processing Bisq data dump...');
|
|
const data: BisqBlocks = JSON.parse(cacheData);
|
|
if (data.blocks && data.blocks.length !== this.blocks.length) {
|
|
this.blocks = data.blocks.filter((block) => block.txs.length > 0);
|
|
this.blocks.reverse();
|
|
this.latestBlockHeight = data.chainHeight;
|
|
const time = new Date().getTime() - start;
|
|
console.log('Bisq dump processed in ' + time + ' ms');
|
|
} else {
|
|
throw new Error(`Bisq dump didn't contain any blocks`);
|
|
}
|
|
}
|
|
}
|
|
|
|
private loadData(): Promise<string> {
|
|
return new Promise((resolve, reject) => {
|
|
if (!fs.existsSync(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH)) {
|
|
return reject(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist`);
|
|
}
|
|
fs.readFile(config.BSQ_BLOCKS_DATA_PATH + Bisq.BLOCKS_JSON_FILE_PATH, 'utf8', (err, data) => {
|
|
if (err) {
|
|
reject(err);
|
|
}
|
|
resolve(data);
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
export default new Bisq();
|