app status

status.js

var appStatus;

process.on('uncaughtException', function globalErrHandler (error) {
  
  console.log('An error happened when the appStatus was '+ appStatus);
  
  switch (appStatus) {
    case 1:  //recover from status 1
    case 2:  //idem from status 2
    case 3:  //etc.
    case 4:
  }
  
  process.nextTick(loop);  //keep going
});

function mayThrow () { if (Math.random() > 0.999999) throw Error() }

function loop () {
  appStatus= 1, mayThrow();
  appStatus= 2, mayThrow();
  appStatus= 3, mayThrow();
  appStatus= 4, mayThrow();
  process.nextTick(loop);
}

loop();