[Question] Data Composition / Aggregation

[ThaDaVos]

Quick question - does Express Gateway support something called Result Aggregation or Data composition?
So for example, client makes call to gateway GET /user/{id}
Gateway calls three microservices and combines their responses as follows:
GET http://microservice1.com/accounts/{id} -> RETURNS { "id":"1", "email":"john@doe.com" }
GET http://microservice2.com/memberships/for/{id} -> RETURNS [ { *MEMBERSHIP* }, { *MEMBERSHIP* } ]
GET http://microservice3.com/avatars -> RETURNS { "avatar": "http://example.com/avatar/1" }

Gateway returns ->

{
    "id": "1",
    "email": "john@doe.com"
    "memberships": [
        { /*MEMBERSHIP*/ },
        { /*MEMBERSHIP*/ }
    ],
    "avatar": "http://example.com/avatar/1"
}

(a) Is above possible? (b) Or should I really create my own policy for this to make this work?
(c) Or is this considered bad practice?

[XVincentX]

We do not support this natively in Express Gateway. Next time use Stackoverflow or Gitter :)

[ThaDaVos]

@XVincentX - I did use Gitter 😂
But I thought let's also ask it here so anyone looking for it can quickly find it and know the answer

[XVincentX]

I know — but keep in mind I’m not 24/7 on the Gitter channel and creating issues for questions just drags out my personal time; I understand your needs — but I hope you understand mine.

[ThaDaVos]

Sorry @XVincentX - It was not meant to bother you - I understand your personal time :D

[ThaDaVos]

I'll try to look into this myself - maybe I can come up with an alternative policy for the proxy which allows data composition