129 lines
3.6 KiB
TypeScript
129 lines
3.6 KiB
TypeScript
/**
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* Copyright 2013-2019 GenieACS Inc.
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*
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* This file is part of GenieACS.
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*
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* GenieACS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* GenieACS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with GenieACS. If not, see <http://www.gnu.org/licenses/>.
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*/
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import { spawn, ChildProcess } from "child_process";
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import * as crypto from "crypto";
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import * as config from "./config";
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import { Fault } from "./types";
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import { ROOT_DIR } from "./config";
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import * as logger from "./logger";
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import readline from "readline";
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const TIMEOUT = +config.get("EXT_TIMEOUT");
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const processes: { [script: string]: ChildProcess } = {};
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const jobs = new Map();
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export function run(args: string[]): Promise<{ fault: Fault; value: any }> {
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return new Promise((resolve) => {
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const scriptName = args[0];
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const id = crypto.randomBytes(8).toString("hex");
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jobs.set(id, resolve);
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if (!processes[scriptName]) {
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const p = spawn(ROOT_DIR + "/bin/genieacs-ext", [scriptName], {
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stdio: ["ignore", "pipe", "pipe", "ipc"],
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});
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processes[scriptName] = p;
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p.on("error", (err) => {
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if (processes[scriptName] === p) {
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if (jobs.delete(id)) {
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resolve({
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fault: { code: err.name, message: err.message },
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value: null,
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});
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}
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// eslint-disable-next-line @typescript-eslint/no-floating-promises
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kill(processes[scriptName]);
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delete processes[scriptName];
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}
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});
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p.on("disconnect", () => {
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if (processes[scriptName] === p) delete processes[scriptName];
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});
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p.on("message", (message) => {
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const func = jobs.get(message[0]);
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if (func) {
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jobs.delete(message[0]);
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// Wait for any disconnect even to fire
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setTimeout(() => {
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func({ fault: message[1], value: message[2] });
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});
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}
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});
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const rlstdout = readline.createInterface(p.stdout);
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rlstdout.on("line", (line) => {
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logger.info({ message: `Ext ${scriptName}(${p.pid}): ${line}` });
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});
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const rlstderr = readline.createInterface(p.stderr);
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rlstderr.on("line", (line) => {
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logger.warn({ message: `Ext ${scriptName}(${p.pid}): ${line}` });
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});
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}
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setTimeout(() => {
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if (jobs.delete(id)) {
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resolve({
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fault: { code: "timeout", message: "Extension timed out" },
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value: null,
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});
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}
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}, TIMEOUT);
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if (!processes[scriptName].connected) return false;
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return processes[scriptName].send([id, args.slice(1)]);
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});
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}
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function kill(process: ChildProcess): Promise<void> {
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return new Promise((resolve) => {
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const timeToKill = Date.now() + 5000;
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process.kill();
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const t = setInterval(() => {
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if (!process.connected) {
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clearInterval(t);
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resolve();
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} else if (Date.now() > timeToKill) {
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process.kill("SIGKILL");
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clearInterval(t);
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resolve();
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}
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}, 100);
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});
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}
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export async function killAll(): Promise<void> {
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await Promise.all(
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Object.entries(processes).map(([k, p]) => {
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delete processes[k];
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return kill(p);
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}),
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);
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}
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