Async functions in meteor server

Question

I'm using vpulim:node-soap to have a soap server running.

My meteor server startup contains this amongst various other code:

  authRequestOperation: function(args,cb,headers,req) {
      console.log(args);
      var authResponceObject = {};
      var futureAuthResponse = new Future();
      Fiber(function(){
        if(collectorUsers.findOne({username: args.username})){
          console.log("Found User");
          authResponceObject = {
            username: args.username,
            nonce: Random.id()
          };
          console.log("authResponceObject is: " + JSON.stringify(authResponceObject,null,4));
          console.log("futureAuthResponse returning...");
          futureAuthResponse.return(authResponceObject);
        }
        // console.log("futureAuthResponse waiting...");
        // return futureAuthResponse.wait();


      }).run();
      console.log("authResponceObject after fiber is: " + JSON.stringify(authResponceObject,null,4));
      return authResponceObject;
  },

What I'm trying to do is:

I receive a user object from client.
I check if the user is present in the mongodb
If user is present, prepare response object
Respond to the client with the response object.

I have 1. working. However, the dute it being async call, the order of 2,3,4 is messed up.

Right now what's happening is:

receive client object
return response object (which is empty)
Check mongo
Prepare response object.

I'm not using Meteor.methods for the above. How do I make this work in the right manner? I've tried juggling around wrapAsync and fiber/future but hitting dead ends.

Why do you use `Fiber` in your code above? `.findOne` is already sync. Do you see error if not using `Fiber`? — kkkkkkk, Nov 29 '16 at 14:49
Since i'm running the code outside of Meteor.methods, I need to wrap it in a Fiber. Or else I get an error saying that Meteor need to run with a fiber. — blueren, Nov 29 '16 at 16:21

score 1 · Accepted Answer · answered Nov 30 '16 at 01:39

I believe Meteor.bindEnvironment can solve your problem, try this code:

{
  // ...
  authRequestOperation: Meteor.bindEnvironment(function(args, cb, headers, req) {
    console.log(args);
    var authResponceObject = {};

    if (collectorUsers.findOne({username: args.username})) {
      console.log("Found User");
      authResponceObject = {
        username: args.username,
        nonce: Random.id()
      };
      console.log("authResponceObject is: " + JSON.stringify(authResponceObject, null, 4));
    }


    return authResponceObject;
  }),
  // ...
}

Async functions in meteor server

1 Answers1