Asynchronous HTTP Requests with SuiteScript Promises

The http.request.promise method allows developers to send HTTP requests asynchronously, greatly enhancing the flexibility and efficiency of SuiteScript applications. Using promises, developers can handle responses and errors in a more organized manner, improving code readability and maintainability.

Method Overview

The http.request.promise provides functionality similar to the synchronous http.request(options) method, enabling asynchronous operations with the same parameters and error handling properties. This method is particularly advantageous for client and server scripts, allowing for non-blocking operations while waiting for network responses.

Key Features

• Governance: Each asynchronous HTTP request consumes 10 governance units, impacting how many requests can be performed in a single execution context.
• Flexibility: The asynchronous nature of this method enables better performance in applications that require multiple network requests without pausing the execution of the script.
• Error Handling: Promises simplify the handling of errors through .catch() methods, allowing precise responses based on the result of the asynchronous call.

Syntax Example

Here is an example of how to implement the http.request.promise method:

1// Additional code preceding this snippet
2var headerObj = {
3    name: 'Accept-Language',
4    value: 'en-us'
5};
6 
7http.request.promise({
8    method: http.Method.GET,
9    url: 'http://www.google.com',
10    body: 'My REQUEST Data',
11    headers: headerObj
12})
13    .then(function(response){
14        log.debug({
15            title: 'Response',
16            details: response
17        });
18    })
19    .catch(function onRejected(reason) {
20        log.debug({
21            title: 'Invalid Request: ',
22            details: reason
23        });
24    });
25// Additional code following this snippet

Who This Affects

This feature primarily affects:

• Administrators: Who manage SuiteScript applications.
• Developers: Who implement and maintain scripting solutions.

By utilizing promises with the http.request.promise method, developers can create more dynamic and user-friendly applications that efficiently handle HTTP requests and their responses.

Key Takeaways

• The http.request.promise method offers asynchronous HTTP requests in SuiteScript.
• Error handling is simplified through the use of promise syntax.
• This method is suitable for both client and server scripts, allowing for efficient coding practices in NetSuite applications.

Source: This article is based on Oracle's official NetSuite documentation.