LibrePay/Backend
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External providers can now be loaded

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Implemented invoice protocol (see docs)
This commit is contained in:
Nicolas Klier
2020-12-29 00:09:40 +01:00
parent 0b3502d81f
commit aa2147d509
12 changed files with 169 additions and 74 deletions
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40
src/helper/providers/bitcoinCore.ts
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@@ -1,12 +1,11 @@
import { Socket, Subscriber } from "zeromq";
import { config } from "../../../config";
import { logger, rpcClient } from "../../app";
import { invoiceManager, logger, rpcClient } from "../../app";
import { BackendProvider, ITransaction, IRawTransaction } from "../backendProvider";
import { InvoiceManager } from "../invoiceManager";
import { CryptoUnits, PaymentStatus } from "../types";
export class BitcoinCore implements BackendProvider {
invoiceManager: InvoiceManager;
export class Provider implements BackendProvider {
private sock: Subscriber;
@@ -17,7 +16,14 @@ export class BitcoinCore implements BackendProvider {
CRYPTO = CryptoUnits.BITCOIN;
onEnable() {
logger.info('The Bitcoin Core backend is now available!');
this.sock = new Subscriber();
this.sock.connect('tcp://127.0.0.1:29000');
this.sock.subscribe('rawtx');
this.listener();
this.watchConfirmations();
//logger.info('The Bitcoin Core backend is now available!');
}
async getNewAddress(): Promise<string> {
@@ -78,18 +84,14 @@ export class BitcoinCore implements BackendProvider {
}
async listener() {
this.sock = new Subscriber();
this.sock.connect('tcp://127.0.0.1:29000');
this.sock.subscribe('rawtx');
logger.info('Now listing for incoming transaction to any invoices ...');
for await (const [topic, msg] of this.sock) {
const rawtx = msg.toString('hex');
const tx = await this.decodeRawTransaction(rawtx);
tx.vout.forEach(output => {
// Loop over each output and check if the address of one matches the one of an invoice.
this.invoiceManager.getPendingInvoices().forEach(async invoice => {
invoiceManager.getPendingInvoices().forEach(async invoice => {
if (output.scriptPubKey.addresses === undefined) return; // Sometimes (weird) transaction don't have any addresses
// We found our transaction (https://developer.bitcoin.org/reference/rpc/decoderawtransaction.html)
@@ -107,10 +109,10 @@ export class BitcoinCore implements BackendProvider {
logger.info(`Sent ${output.value} BTC back to ${senderAddress}`);
} else {
invoice.status = PaymentStatus.UNCONFIRMED;
invoice.transcationHashes = tx.txid;
invoice.transcationHash = tx.txid;
invoice.save();
this.invoiceManager.upgradeInvoice(invoice);
invoiceManager.upgradeInvoice(invoice);
}
}
})
@@ -121,22 +123,22 @@ export class BitcoinCore implements BackendProvider {
async watchConfirmations() {
setInterval(() => {
this.invoiceManager.getUnconfirmedTransactions().forEach(async invoice => {
if (invoice.transcationHashes.length === 0) return;
invoiceManager.getUnconfirmedTransactions().forEach(async invoice => {
if (invoice.transcationHash.length === 0) return;
let trustworthy = true; // Will be true if all transactions are above threshold.
for (let i = 0; i < invoice.transcationHashes.length; i++) {
const transcation = invoice.transcationHashes[i];
for (let i = 0; i < invoice.transcationHash.length; i++) {
const transcation = invoice.transcationHash;
const tx = await this.getTransaction(transcation);
if (this.invoiceManager.hasConfirmationChanged(invoice, tx.confirmations)) {
this.invoiceManager.setConfirmationCount(invoice, tx.confirmations);
if (invoiceManager.hasConfirmationChanged(invoice, tx.confirmations)) {
invoiceManager.setConfirmationCount(invoice, tx.confirmations);
}
if (Number(tx.confirmations) > 0) {
logger.info(`Transaction (${transcation}) has reached more then 2 confirmations and can now be trusted!`);
this.invoiceManager.removeInvoice(invoice);
invoiceManager.removeInvoice(invoice);
} else {
trustworthy = false;
logger.debug(`Transcation (${transcation}) has not reached his threshold yet.`);