On AWS Cloudfront, I'd like to route /api/* requests to an external api

Ben Perram

11/13/23, 11:42 PM

I'm fairly new to Cloudfront ( AWS in general ), and looking set up a behaviour such that any requests that is for example

test.com/api/*

goes to an existing api that we also own, except it's on a seperate domain, e.g.

staging.test.com/api

Is this an allowed behaviour? I probably will need to allow for this the receiving API in CORS but just looking for how to set this up as a behaviour in Cloudfront.

I have tried using lambda functions along with the route

e.g.


    
    var response = {
        statusCode: 302,
        statusDescription: 'Found',
        headers:
            { "location": { "value": "https://staging.test.com.au/api/" + redirectPath } }
        }

    return response;

That doesn't seem to be working.

So was just wondering what is the correct way of going about this, I can only find references on using an API gateway instead which isn't what I want.

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Iren Saltalı

11/15/23, 3:29 PM

You can do it by using origin and behavior. Define origin for and staging.test.com/api and add new behavior with path pattern as /api/*.

Details: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/distribution-web-values-specify.html?icmpid=docs_cf_help_panel#DownloadDistValuesPathPattern

+ 2

Ben Perram

11/27/23, 10:57 PM

Heya thanks, we ended up solving this, basically the way you suggested but we had a load balancer that sat in front of our API so we ended up pointing it to that as our origin which worked.

Iren Saltalı

11/28/23, 9:23 AM

Great, I'm glad it worked out for you. :)

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