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RTL/backend/controllers/eclair/webSocketClient.js
2022-12-19 16:20:02 -08:00

119 lines
6.8 KiB
JavaScript

import WebSocket from 'ws';
import { Logger } from '../../utils/logger.js';
import { Common } from '../../utils/common.js';
import { WSServer } from '../../utils/webSocketServer.js';
import { ECLWSEventsEnum } from '../../models/ecl.model.js';
export class ECLWebSocketClient {
constructor() {
this.logger = Logger;
this.common = Common;
this.wsServer = WSServer;
this.webSocketClients = [];
this.reconnectTimeOut = null;
this.waitTime = 0.5;
this.reconnet = (eclWsClt) => {
if (this.reconnectTimeOut) {
return;
}
this.waitTime = (this.waitTime >= 64) ? 64 : (this.waitTime * 2);
this.reconnectTimeOut = setTimeout(() => {
if (eclWsClt.selectedNode) {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'INFO', fileName: 'ECLWebSocket', msg: 'Reconnecting to the Eclair\'s Websocket Server..' });
this.connect(eclWsClt.selectedNode);
}
this.reconnectTimeOut = null;
}, this.waitTime * 1000);
};
this.connect = (selectedNode) => {
try {
const clientExists = this.webSocketClients.find((wsc) => wsc.selectedNode.index === selectedNode.index);
if (!clientExists) {
if (selectedNode.ln_server_url) {
const newWebSocketClient = { selectedNode: selectedNode, reConnect: true, webSocketClient: null };
this.connectWithClient(newWebSocketClient);
this.webSocketClients.push(newWebSocketClient);
}
}
else {
if ((!clientExists.webSocketClient || clientExists.webSocketClient.readyState !== WebSocket.OPEN) && selectedNode.ln_server_url) {
clientExists.reConnect = true;
this.connectWithClient(clientExists);
}
}
}
catch (err) {
throw new Error(err);
}
};
this.connectWithClient = (eclWsClt) => {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'INFO', fileName: 'ECLWebSocket', msg: 'Connecting to the Eclair\'s Websocket Server..' });
const UpdatedLNServerURL = (eclWsClt.selectedNode.ln_server_url)?.replace(/^http/, 'ws');
const firstSubStrIndex = (UpdatedLNServerURL.indexOf('//') + 2);
const WS_LINK = UpdatedLNServerURL.slice(0, firstSubStrIndex) + ':' + eclWsClt.selectedNode.ln_api_password + '@' + UpdatedLNServerURL.slice(firstSubStrIndex) + '/ws';
eclWsClt.webSocketClient = new WebSocket(WS_LINK);
eclWsClt.webSocketClient.onopen = () => {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'INFO', fileName: 'ECLWebSocket', msg: 'Connected to the Eclair\'s Websocket Server..' });
this.waitTime = 0.5;
};
eclWsClt.webSocketClient.onclose = (e) => {
if (eclWsClt && eclWsClt.selectedNode && eclWsClt.selectedNode.ln_implementation === 'ECL') {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'INFO', fileName: 'ECLWebSocket', msg: 'Web socket disconnected, will reconnect again...' });
eclWsClt.webSocketClient.close();
if (eclWsClt.reConnect) {
this.reconnet(eclWsClt);
}
}
};
eclWsClt.webSocketClient.onmessage = (msg) => {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'DEBUG', fileName: 'ECLWebSocket', msg: 'Received message from the server..', data: msg.data });
msg = (typeof msg.data === 'string') ? JSON.parse(msg.data) : msg.data;
if (msg.type && msg.type !== ECLWSEventsEnum.PAY_RELAYED && msg.type !== ECLWSEventsEnum.PAY_SETTLING_ONCHAIN && msg.type !== ECLWSEventsEnum.ONION_MESSAGE_RECEIVED) {
msg['source'] = 'ECL';
const msgStr = JSON.stringify(msg);
this.wsServer.sendEventsToAllLNClients(msgStr, eclWsClt.selectedNode);
}
};
eclWsClt.webSocketClient.onerror = (err) => {
if (eclWsClt.selectedNode.ln_version === '' || !eclWsClt.selectedNode.ln_version || this.common.isVersionCompatible(eclWsClt.selectedNode.ln, '0.5.0')) {
this.logger.log({ selectedNode: eclWsClt.selectedNode, level: 'ERROR', fileName: 'ECLWebSocket', msg: 'Web socket error', error: err });
const errStr = ((typeof err === 'object' && err.message) ? JSON.stringify({ error: err.message }) : (typeof err === 'object') ? JSON.stringify({ error: err }) : ('{ "error": ' + err + ' }'));
this.wsServer.sendErrorToAllLNClients(errStr, eclWsClt.selectedNode);
eclWsClt.webSocketClient.close();
if (eclWsClt.reConnect) {
this.reconnet(eclWsClt);
}
}
else {
eclWsClt.reConnect = false;
}
};
};
this.disconnect = (selectedNode) => {
const clientExists = this.webSocketClients.find((wsc) => wsc.selectedNode.index === selectedNode.index);
if (clientExists && clientExists.webSocketClient && clientExists.webSocketClient.readyState === WebSocket.OPEN) {
this.logger.log({ selectedNode: clientExists.selectedNode, level: 'INFO', fileName: 'ECLWebSocket', msg: 'Disconnecting from the Eclair\'s Websocket Server..' });
clientExists.reConnect = false;
clientExists.webSocketClient.close();
const clientIdx = this.webSocketClients.findIndex((wsc) => wsc.selectedNode.index === selectedNode.index);
this.webSocketClients.splice(clientIdx, 1);
}
};
this.updateSelectedNode = (newSelectedNode) => {
const clientIdx = this.webSocketClients.findIndex((wsc) => +wsc.selectedNode.index === +newSelectedNode.index);
let newClient = this.webSocketClients[clientIdx];
if (!newClient) {
newClient = { selectedNode: null, reConnect: true, webSocketClient: null };
}
newClient.selectedNode = JSON.parse(JSON.stringify(newSelectedNode));
this.webSocketClients[clientIdx] = newClient;
};
this.wsServer.eventEmitterECL.on('CONNECT', (nodeIndex) => {
this.connect(this.common.findNode(+nodeIndex));
});
this.wsServer.eventEmitterECL.on('DISCONNECT', (nodeIndex) => {
this.disconnect(this.common.findNode(+nodeIndex));
});
}
}
export const ECLWSClient = new ECLWebSocketClient();