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403 ClientError is misleading when export is too large

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
ruby
Domain
api, backend

Research direction

Start by tracing client.export_file and the Google::Apis::ClientError handling to see where the API response body is processed. Reproduce the oversized export response and verify that the ClientError exposes the JSON error body or another usable representation, without losing other 403 details.

Written by the indexing model from the issue text.

Description

type: feature request

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PLEASE READ: If you have a support contract with Google, please create an issue in the support console instead of filing on GitHub. This will ensure a timely response.

Is your feature request related to a problem? Please describe.

My team is using the client to download files. A line like:

client.export_file(file.id, 'application/pdf', :download_dest => StringIO.new).string

Is raising a Google::Apis::ClientError with an e.inspect like:

#<Google::Apis::ClientError: Invalid request status_code: 403 header: #<HTTP::Message::Headers:0x66aececb @body_encoding=#<Encoding:UTF-8>, @request_absolute_uri=nil, @dumped=false, @request_method="GET", @reason_phrase="Forbidden", @request_uri=#<Addressable::URI:0x9a0 URI:https://www.googleapis.com/drive/v3/files/FILE_ID_HERE/export?alt=media&mimeType=application%2Fpdf>, @http_version="1.1", @body_date=nil, @is_request=false, @request_query={"alt"=>"media", "mimeType"=>"application/pdf"}, @body_size=0, @status_code=403, @body_type=nil, @chunked=false, @header_item=[["Vary", "Origin"], ["Vary", "X-Origin"], ["Content-Type", "application/json; charset=UTF-8"], ["Content-Encoding", "gzip"], ["Date", "Tue, 08 Sep 2020 18:00:04 GMT"], ["Expires", "Tue, 08 Sep 2020 18:00:04 GMT"], ["Cache-Control", "private, max-age=0"], ["X-Content-Type-Options", "nosniff"], ["X-Frame-Options", "SAMEORIGIN"], ["Content-Security-Policy", "frame-ancestors 'self'"], ["X-XSS-Protection", "1; mode=block"], ["Server", "GSE"], ["Alt-Svc", "h3-29=\":443\"; ma=2592000,h3-27=\":443\"; ma=2592000,h3-T051=\":443\"; ma=2592000,h3-T050=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\""], ["Transfer-Encoding", "chunked"]], @body_charset=nil>>

This threw us for a real loop, because most of these requests work just fine, it was just an occasional file that consistently got a 403. We finally tested the specific file in https://developers.google.com/drive/api/v3/reference/files/export and found that the full response from the API is:

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "exportSizeLimitExceeded",
    "message": "This file is too large to be exported."
   }
  ],
  "code": 403,
  "message": "This file is too large to be exported."
 }
}

Describe the solution you'd like
It would be great to get that JSON object back in the ClientError's body field, or some other mechanism.

Describe alternatives you've considered
Right now, we're just having to assume that a 403 from this endpoint means that the file is too large. But that's not great, since https://developers.google.com/drive/api/v3/handle-errors lists a whole bunch of reasons that we might be getting a 403.

Dominant language
Ruby
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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