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Adds --cluster support (#2596)

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* Adds --cluster support

* Restart failing child processes
This commit is contained in:
Florent Vilmart
2016-08-29 21:43:35 -04:00
committed by GitHub
parent d65f4a6f75
commit 4d78446cb9
2 changed files with 48 additions and 16 deletions
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60
src/cli/parse-server.js
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@@ -4,6 +4,8 @@ import { ParseServer } from '../index';
import definitions from './cli-definitions';
import program from './utils/commander';
import { mergeWithOptions } from './utils/commander';
import cluster from 'cluster';
import os from 'os';
program.loadDefinitions(definitions);
@@ -48,12 +50,7 @@ if (!options.appId || !options.masterKey || !options.serverURL) {
process.exit(1);
}
const app = express();
const api = new ParseServer(options);
app.use(options.mountPath, api);
var server = app.listen(options.port, function() {
function logStartupOptions(options) {
for (let key in options) {
let value = options[key];
if (key == "masterKey") {
@@ -61,15 +58,46 @@ var server = app.listen(options.port, function() {
}
console.log(`${key}: ${value}`);
}
console.log('');
console.log('parse-server running on '+options.serverURL);
});
}
var handleShutdown = function() {
console.log('Termination signal received. Shutting down.');
server.close(function () {
process.exit(0);
function startServer(options, callback) {
const app = express();
const api = new ParseServer(options);
app.use(options.mountPath, api);
var server = app.listen(options.port, callback);
var handleShutdown = function() {
console.log('Termination signal received. Shutting down.');
server.close(function () {
process.exit(0);
});
};
process.on('SIGTERM', handleShutdown);
process.on('SIGINT', handleShutdown);
}
if (options.cluster) {
const numCPUs = typeof options.cluster === 'number' ? options.cluster : os.cpus().length;
if (cluster.isMaster) {
logStartupOptions(options);
for(var i = 0; i < numCPUs; i++) {
cluster.fork();
}
cluster.on('exit', (worker, code, signal) => {
console.log(`worker ${worker.process.pid} died... Restarting`);
cluster.fork();
});
} else {
startServer(options, () => {
console.log('['+process.pid+'] parse-server running on '+options.serverURL);
});
}
} else {
startServer(options, () => {
logStartupOptions(options);
console.log('');
console.log('['+process.pid+'] parse-server running on '+options.serverURL);
});
};
process.on('SIGTERM', handleShutdown);
process.on('SIGINT', handleShutdown);
}