onemon
Version:
Run a npm script as a deamon, once
132 lines • 5.24 kB
JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.IPCServer = void 0;
const net_1 = __importDefault(require("net"));
const fs_1 = __importDefault(require("fs"));
const uuid_1 = require("uuid");
const events_1 = require("events");
const ipc_transcoder_1 = require("./ipc-transcoder");
const xpipe = require('xpipe');
class IPCServer extends events_1.EventEmitter {
constructor(options) {
super();
this.socketPath = xpipe.eq(options.socketPath);
this.encoder = ipc_transcoder_1.createEncoder();
this.socketToClient = new Map();
this.clientToSocket = new Map();
}
listen() {
return new Promise((resolve, reject) => {
if (this.server) {
resolve();
return;
}
const server = net_1.default.createServer();
this.socketToClient = new Map();
this.clientToSocket = new Map();
server.once('listening', () => {
this.server = server;
server.on('error', (err) => this.emit('error', err));
resolve();
});
server.once('error', (err) => {
if (err.code !== 'EADDRINUSE') {
reject(err);
return;
}
// Handle the case of a dead socket.
const testSocket = net_1.default.createConnection({ path: this.socketPath });
testSocket.once('connect', () => reject(err));
testSocket.once('error', (testErr) => {
if (testErr.code !== 'ECONNREFUSED') {
reject(err);
return;
}
if (process.platform === 'win32') {
reject(err);
return;
}
try {
fs_1.default.unlinkSync(this.socketPath);
}
catch (unlinkErr) {
reject(err);
return;
}
server.listen(this.socketPath);
});
});
server.on('connection', socket => {
const id = uuid_1.v4();
this.socketToClient.set(socket, id);
this.clientToSocket.set(id, socket);
const forgetClient = () => {
this.socketToClient.delete(socket);
this.clientToSocket.delete(id);
};
socket.setEncoding(ipc_transcoder_1.socketEncoding);
ipc_transcoder_1.attachDataListener({
emitter: this,
socket,
createDecoder: ipc_transcoder_1.createDecoder,
clientId: id
});
socket.on('end', forgetClient);
socket.on('close', forgetClient);
this.emit('connection', id, socket);
});
server.on('close', () => {
this.emit('close');
delete this.server;
});
server.listen(this.socketPath);
});
}
close() {
return new Promise((resolve) => __awaiter(this, void 0, void 0, function* () {
if (!this.server) {
resolve();
return;
}
this.socketToClient.forEach((id, socket) => {
socket.end();
});
this.server.once('close', () => resolve());
this.server.close();
}));
}
send(clientId, topic, message) {
if (!this.server) {
throw new Error('Cannot send message, no active server');
}
const socket = this.clientToSocket.get(clientId);
if (!socket) {
throw new Error('Cannot send message, invalid clientId');
}
const data = this.encoder({ topic, message });
socket.write(data);
}
broadcast(topic, message) {
if (!this.server) {
throw new Error('Cannot send message, no active server');
}
const data = this.encoder({ topic, message });
this.socketToClient.forEach((id, socket) => {
socket.write(data);
});
}
}
exports.IPCServer = IPCServer;
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