Added files

mongoui/mongoui-master/node_modules/derby/lib/cluster.js

@@ -0,0 +1,47 @@
+var cluster = require('cluster')
+  , http = require('http')
+
+module.exports = {
+  run: run
+};
+
+function run(filename, port) {
+  if (cluster.isMaster) {
+    console.log('Master pid', process.pid);
+    startWorker();
+  } else {
+    var server = requireServer(filename);
+    server.listen(port, function() {
+      console.log('%d listening. Go to: http://localhost:%d/', process.pid, port);
+    });
+  }
+}
+
+function startWorker() {
+  var worker = cluster.fork();
+  worker.once('disconnect', function () {
+    worker.process.kill();
+  });
+  worker.on('message', function(message) {
+    if (message.type === 'reload') {
+      if (worker.disconnecting) return;
+      console.log('Killing %d', worker.process.pid);
+      worker.process.kill();
+      worker.disconnecting = true;
+      startWorker();
+    }
+  });
+}
+
+function requireServer(filename) {
+  try {
+    var server = require(filename);
+  } catch (e) {
+    console.error('Error requiring server module from `%s`', filename);
+    throw e;
+  }
+  if (!(server instanceof http.Server)) {
+    throw new Error('`' + filename + '` does not export a valid `http.Server`');
+  }
+  return server;
+}