Get Thumbnail from FORGE API but received status code 202

Question

I'm trying to get thumbnail from Forge API here

https://forge.autodesk.com/en/docs/model-derivative/v2/reference/http/thumbnails/urn-thumbnail-GET/ `

I got it with Postman and axios successfully, and I tried it with RestSharp, HttpClient and GetThumbnail from DerivativesApi (Autodesk.Forge) in C# but only got status code 202 with message:

{"Result":"The thumbnail generating for this graph node is pending"}

I realized that RestSharp and HttpClient only receive code 202 and return results. I don't know how I can wait for code 200 and thumbnail. Can anyone help me?

This is my code:

var request = new RestRequest($"https://developer.api.autodesk.com/modelderivative/v2/designdata/{nameHash}/thumbnail", Method.GET);
request.AddHeader("Authorization", $"Bearer {oauth.access_token}");
var client = new RestClient();
var restRes = client.Execute(request);

Petr Broz · Accepted Answer · 2022-10-25 12:51:15Z

0

The 202 code typically indicates that the request has been accepted but the response is not available yet. Is it possible that you're asking for a thumbnail of a file that is still being processed by the Model Derivative service? Try inspecting the response headers, and see if there's one called x-ads-job-status which (according to the documentation) should tell you the status of the processing.

answered Oct 25, 2022 at 12:51

Petr Broz

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3 Comments

RomCoca Over a year ago

I understand, but I don't know how to download the data after it's done

Petr Broz Over a year ago

As I mentioned already, the 202 code indicates that the response is not available yet so when you repeat the request later, it should eventually return 200 OK with the content you want.

RomCoca Over a year ago

Thank Petr Broz, I put it in a loop to get the code 200, and it worked

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