79 lines
2.1 KiB
TypeScript
79 lines
2.1 KiB
TypeScript
|
import * as fs from 'fs';
|
||
|
|
import { BisqBlocks, BisqBlock, BisqTransaction } from '../interfaces';
|
||
|
|
|
||
|
|
class Bisq {
|
||
|
|
static FILE_NAME = './blocks.json';
|
||
|
|
private latestBlockHeight = 0;
|
||
|
|
private blocks: BisqBlock[] = [];
|
||
|
|
private transactions: BisqTransaction[] = [];
|
||
|
|
private transactionsIndex: { [txId: string]: BisqTransaction } = {};
|
||
|
|
private blocksIndex: { [hash: string]: BisqBlock } = {};
|
||
|
|
|
||
|
|
constructor() {}
|
||
|
|
|
||
|
|
startBisqService(): void {
|
||
|
|
this.loadBisqDumpFile();
|
||
|
|
}
|
||
|
|
|
||
|
|
async loadBisqDumpFile(): Promise<void> {
|
||
|
|
await this.loadBisqBlocksDump();
|
||
|
|
this.buildIndex();
|
||
|
|
}
|
||
|
|
|
||
|
|
getTransaction(txId: string): BisqTransaction | undefined {
|
||
|
|
return this.transactionsIndex[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.blocksIndex[hash];
|
||
|
|
}
|
||
|
|
|
||
|
|
private buildIndex() {
|
||
|
|
this.blocks.forEach((block) => {
|
||
|
|
this.blocksIndex[block.hash] = block;
|
||
|
|
block.txs.forEach((tx) => {
|
||
|
|
this.transactions.push(tx);
|
||
|
|
this.transactionsIndex[tx.id] = tx;
|
||
|
|
});
|
||
|
|
});
|
||
|
|
this.blocks.reverse();
|
||
|
|
this.transactions.reverse();
|
||
|
|
console.log('Bisq data index rebuilt');
|
||
|
|
}
|
||
|
|
|
||
|
|
private async loadBisqBlocksDump() {
|
||
|
|
const start = new Date().getTime();
|
||
|
|
const cacheData = await this.loadData();
|
||
|
|
if (cacheData) {
|
||
|
|
console.log('Parsing Bisq data from dump file');
|
||
|
|
const data: BisqBlocks = JSON.parse(cacheData);
|
||
|
|
if (data.blocks) {
|
||
|
|
this.blocks = data.blocks;
|
||
|
|
this.latestBlockHeight = data.chainHeight;
|
||
|
|
const end = new Date().getTime();
|
||
|
|
const time = end - start;
|
||
|
|
console.log('Loaded bisq dump in ' + time + ' ms');
|
||
|
|
} else {
|
||
|
|
throw new Error(`Bisq dump didn't contain any blocks`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private loadData(): Promise<string> {
|
||
|
|
return new Promise((resolve, reject) => {
|
||
|
|
fs.readFile(Bisq.FILE_NAME, 'utf8', (err, data) => {
|
||
|
|
if (err) {
|
||
|
|
reject(err);
|
||
|
|
}
|
||
|
|
resolve(data);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
export default new Bisq();
|