Gem::S3URISigner#ec2_metadata_request

# File tmp/rubies/ruby-4.0.0/lib/rubygems/s3_uri_signer.rb, line 179
def ec2_metadata_request(url, token:)
  request = ec2_iam_request(Gem::URI(url), Gem::Net::HTTP::Get)

  response = request.fetch do |req|
    if token
      req.add_field "X-aws-ec2-metadata-token", token
    end
  end

  case response
  when Gem::Net::HTTPOK then
    JSON.parse(response.body)
  else
    raise InstanceProfileError.new("Unable to fetch AWS metadata from #{uri}: #{response.message} #{response.code}")
  end
end