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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const common = require('../common');
const assert = require('assert');
const cluster = require('cluster');
const totalWorkers = 2;
// Cluster setup
if (cluster.isWorker) {
const http = require('http');
http.Server(() => {}).listen(0, '127.0.0.1');
} else if (process.argv[2] === 'cluster') {
// Send PID to testcase process
let forkNum = 0;
cluster.on('fork', common.mustCall(function forkEvent(worker) {
// Send PID
process.send({
cmd: 'worker',
workerPID: worker.process.pid
});
// Stop listening when done
if (++forkNum === totalWorkers) {
cluster.removeListener('fork', forkEvent);
}
}, totalWorkers));
// Throw accidental error when all workers are listening
let listeningNum = 0;
cluster.on('listening', common.mustCall(function listeningEvent() {
// When all workers are listening
if (++listeningNum === totalWorkers) {
// Stop listening
cluster.removeListener('listening', listeningEvent);
// Throw accidental error
process.nextTick(() => {
throw new Error('accidental error');
});
}
}, totalWorkers));
// Startup a basic cluster
cluster.fork();
cluster.fork();
} else {
// This is the testcase
const fork = require('child_process').fork;
// List all workers
const workers = [];
// Spawn a cluster process
const master = fork(process.argv[1], ['cluster'], { silent: true });
// Handle messages from the cluster
master.on('message', common.mustCall((data) => {
// Add worker pid to list and progress tracker
if (data.cmd === 'worker') {
workers.push(data.workerPID);
}
}, totalWorkers));
// When cluster is dead
master.on('exit', common.mustCall((code) => {
// Check that the cluster died accidentally (non-zero exit code)
assert.strictEqual(code, 1);
// XXX(addaleax): The fact that this uses raw PIDs makes the test inherently
// flaky – another process might end up being started right after the
// workers finished and receive the same PID.
const pollWorkers = () => {
// When master is dead all workers should be dead too
if (workers.some((pid) => common.isAlive(pid))) {
setTimeout(pollWorkers, 50);
}
};
// Loop indefinitely until worker exit
pollWorkers();
}));
}
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