How about forking
Another option to run multiple Node scripts is with a single Node script, which can fork many others. Forking is supported natively in Node, so it adds no dependencies and is cross-platform.
Minimal example
This would just run the scripts as-is and assume they're located in the parent script's directory.
// fork-minimal.js - run with: node fork-minimal.js
const childProcess = require('child_process');
let scripts = ['some-script.js', 'some-other-script.js'];
scripts.forEach(script => childProcess.fork(script));
Verbose example
This would run the scripts with arguments and configured by the many available options.
// fork-verbose.js - run with: node fork-verbose.js
const childProcess = require('child_process');
let scripts = [
{
path: 'some-script.js',
args: ['-some_arg', '/some_other_arg'],
options: {cwd: './', env: {NODE_ENV: 'development'}}
},
{
path: 'some-other-script.js',
args: ['-another_arg', '/yet_other_arg'],
options: {cwd: '/some/where/else', env: {NODE_ENV: 'development'}}
}
];
let processes = [];
scripts.forEach(script => {
let runningScript = childProcess.fork(script.path, script.args, script.options);
// Optionally attach event listeners to the script
runningScript.on('close', () => console.log('Time to die...'))
runningScripts.push(runningScript); // Keep a reference to the script for later use
});
Communicating with forked scripts
Forking also has the added benefit that the parent script can receive events from the forked child processes as well as send back. A common example is for the parent script to kill its forked children.
runningScripts.forEach(runningScript => runningScript.kill());
For more available events and methods see the ChildProcess
documentation
0
Created by Boaz on 2020-03-10 18:55:30 +0000 UTC
Share