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'use strict';
const http = require('http');
const cluster = require('cluster');
function handleRequest(request, response) {
response.end('hello world\n');
}
const NUMBER_OF_WORKERS = 2;
var workersOnline = 0;
if (cluster.isMaster) {
cluster.on('online', function() {
if (++workersOnline === NUMBER_OF_WORKERS) {
console.error('all workers are running');
}
});
process.on('message', function(msg) {
if (msg.type === 'getpids') {
const pids = [];
pids.push(process.pid);
for (var key in cluster.workers)
pids.push(cluster.workers[key].process.pid);
process.send({ type: 'pids', pids: pids });
}
});
for (var i = 0; i < NUMBER_OF_WORKERS; i++) {
cluster.fork();
}
} else {
const server = http.createServer(handleRequest);
server.listen(0);
}