chinwag/chinwagsocial
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Add cache for OEmbed endpoints to avoid extra HTTP requests (#12403)

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* add youtube oembed endpoint

* add check for oembed endpoint

* change unless for a more readable if

* clear blank lines

* endpoint via https

* Fix string literal in condition

* use cache for endpoints

* use cache for endpoints

* clean up and adding check

* clean up and remove redundant return

* add html check

* add false to return

* use double quotes

* use double quotes

* Clean up
This commit is contained in:
Eugen Rochko 2019-11-17 18:40:33 +01:00 • committed by GitHub
commit d14e74eff5
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3 changed files with 64 additions and 8 deletions
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23
app/services/fetch_link_card_service.rb
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@ -39,6 +39,12 @@ class FetchLinkCardService < BaseService
def process_url
@card ||= PreviewCard.new(url: @url)
attempt_oembed || attempt_opengraph
end
def html
return @html if defined?(@html)
Request.new(:get, @url).perform do |res|
if res.code == 200 && res.mime_type == 'text/html'
@html = res.body_with_limit
@ -48,10 +54,6 @@ class FetchLinkCardService < BaseService
@html_charset = nil
end
end
return if @html.nil?
attempt_oembed || attempt_opengraph
end
def attach_card
@ -88,12 +90,17 @@ class FetchLinkCardService < BaseService
end
def attempt_oembed
service = FetchOEmbedService.new
embed = service.call(@url, html: @html)
url = Addressable::URI.parse(service.endpoint_url)
service = FetchOEmbedService.new
url_domain = Addressable::URI.parse(@url).normalized_host
cached_endpoint = Rails.cache.read("oembed_endpoint:#{url_domain}")
embed = service.call(@url, cached_endpoint: cached_endpoint) unless cached_endpoint.nil?
embed ||= service.call(@url, html: html) unless html.nil?
return false if embed.nil?
url = Addressable::URI.parse(service.endpoint_url)
@card.type = embed[:type]
@card.title = embed[:title] || ''
@card.author_name = embed[:author_name] || ''
@ -127,6 +134,8 @@ class FetchLinkCardService < BaseService
end
def attempt_opengraph
return if html.nil?
detector = CharlockHolmes::EncodingDetector.new
detector.strip_tags = true