visop/src/server/utils/cleanup.js

A simple CLI for scaffolding visible operation projects.

// Object to capture process exits and call app specific cleanup function

function noOp() {};



exports.Cleanup = function Cleanup(callback) {

  // attach user callback to the process event emitter
  // if no callback, it will still exit gracefully on Ctrl-C
  callback = callback || noOp;
  process.on('cleanup',callback);

  // do app specific cleaning before exiting
  process.on('exit', function () {
    process.emit('cleanup');
  });

  // catch ctrl+c event and exit normally
  process.on('SIGINT', function () {
    console.log('Ctrl-C...');
    process.exit(2);
  });

  //catch uncaught exceptions, trace, then exit normally
  process.on('uncaughtException', function(e) {
    console.log('Uncaught Exception...');
    console.log(e.stack);
    process.exit(99);
  });
  // process.on('uncaughtException', function (err) {
  //     console.error("uncaughtException ERROR");
  //     if (typeof err === 'object') {
  //         if (err.message) {
  //             console.error('ERROR: ' + err.message)
  //         }
  //         if (err.stack) {
  //             console.error(err.stack);
  //         }
  //     } else {
  //         console.error('argument is not an object');
  //     }
  // });
};