NodeJS scripting & async operations

Server-Side Scripting
1

Hi,

We’re trying to create a custom service using NodeJS in our DreamFactory 2.2.0 server, but we have a problem with asynchronous operations. It seems that the execution of the script finishes without waiting for asynchronous operations to finish.

For example, when using the following code which uses promises:

myApi.authentication
    .login("mylogin", "mypassword")
    .then(function(result) {
        console.log("Auth correct: ", result);
        event.response.content = { result: "Authed" };
    });

event.response.content = { result: "Exited" };

It seems that the service always returns { result: "Exited" } but at a later time we can see the "Auth correct" log trace.

Probably this is a similar problem to Help with my nodejs scripting service

¿How can the service be configured to wait for asynchronous operations?

Thanks in advance.

2

Nobody else experienced this issue?

What about the problem you reported, @jeebee?

3

I find this very strange because it’s a pretty basic thing, don’t you think, @benbusse?

4

hey @rbarriuso, i’m looking into it, will let you know when i find out more.

5

@rbarriuso, To set script response from an async operation use the method below…

event.setResponse(content, statusCode, contentType)

So in your case it will be like …

myApi.authentication
.login("mylogin", "mypassword")
.then(function(result) {
    console.log("Auth correct: ", result);
    var content = { result: "Authed" };
    event.setResponse(content, 200, 'application/json');
});
2 Likes
6

You’re totally right, it seems to work properly with event.setResponse(). Thanks!

7

I fought very long …
Found this post …
event.setResponse()
Very simple…
Working!!!

Thank you!
Respect!