mirror of
https://github.com/discourse/discourse.git
synced 2024-11-24 01:58:12 +08:00
901054fd75
We already cache failed onebox URL requests client-side, we now want to cache this on the server-side for extra protection. failed onebox previews will be cached for 1 hour, and any more requests for that URL will fail with a 404 status. Forcing a rebake via the Rebake HTML action will delete the failed URL cache (like how the oneboxer preview cache is deleted).
48 lines
1.2 KiB
Ruby
48 lines
1.2 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class OneboxController < ApplicationController
|
|
requires_login
|
|
|
|
def show
|
|
unless params[:refresh] == 'true'
|
|
preview = Oneboxer.cached_preview(params[:url])
|
|
preview = preview.strip if preview.present?
|
|
return render(plain: preview) if preview.present?
|
|
end
|
|
|
|
# only 1 outgoing preview per user
|
|
return render(body: nil, status: 429) if Oneboxer.is_previewing?(current_user.id)
|
|
|
|
user_id = current_user.id
|
|
category_id = params[:category_id].to_i
|
|
topic_id = params[:topic_id].to_i
|
|
invalidate = params[:refresh] == 'true'
|
|
url = params[:url]
|
|
|
|
return render(body: nil, status: 404) if Oneboxer.recently_failed?(url)
|
|
|
|
hijack do
|
|
Oneboxer.preview_onebox!(user_id)
|
|
|
|
preview = Oneboxer.preview(url,
|
|
invalidate_oneboxes: invalidate,
|
|
user_id: user_id,
|
|
category_id: category_id,
|
|
topic_id: topic_id
|
|
)
|
|
|
|
preview = preview.strip if preview.present?
|
|
|
|
Oneboxer.onebox_previewed!(user_id)
|
|
|
|
if preview.blank?
|
|
Oneboxer.cache_failed!(url)
|
|
render body: nil, status: 404
|
|
else
|
|
render plain: preview
|
|
end
|
|
end
|
|
end
|
|
|
|
end
|