From cb5b5cb5f79bb2187d8124df91af4c8e1bfd7256 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Wed, 2 May 2018 18:58:48 +0200
Subject: Slightly reduce RAM usage (#7301)

* No need to re-require sidekiq plugins, they are required via Gemfile

* Add derailed_benchmarks tool, no need to require TTY gems in Gemfile

* Replace ruby-oembed with FetchOEmbedService

Reduce startup by 45382 allocated objects

* Remove preloaded JSON-LD in favour of caching HTTP responses

Reduce boot RAM by about 6 MiB

* Fix tests

* Fix test suite by stubbing out JSON-LD contexts
---
 app/services/fetch_link_card_service.rb | 38 ++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 20 deletions(-)

(limited to 'app/services/fetch_link_card_service.rb')

diff --git a/app/services/fetch_link_card_service.rb b/app/services/fetch_link_card_service.rb
index d5920a417..77d4aa538 100644
--- a/app/services/fetch_link_card_service.rb
+++ b/app/services/fetch_link_card_service.rb
@@ -85,42 +85,40 @@ class FetchLinkCardService < BaseService
   end
 
   def attempt_oembed
-    embed = OEmbed::Providers.get(@url, html: @html)
+    embed = FetchOEmbedService.new.call(@url, html: @html)
 
-    return false unless embed.respond_to?(:type)
+    return false if embed.nil?
 
-    @card.type          = embed.type
-    @card.title         = embed.respond_to?(:title)         ? embed.title         : ''
-    @card.author_name   = embed.respond_to?(:author_name)   ? embed.author_name   : ''
-    @card.author_url    = embed.respond_to?(:author_url)    ? embed.author_url    : ''
-    @card.provider_name = embed.respond_to?(:provider_name) ? embed.provider_name : ''
-    @card.provider_url  = embed.respond_to?(:provider_url)  ? embed.provider_url  : ''
+    @card.type          = embed[:type]
+    @card.title         = embed[:title]         || ''
+    @card.author_name   = embed[:author_name]   || ''
+    @card.author_url    = embed[:author_url]    || ''
+    @card.provider_name = embed[:provider_name] || ''
+    @card.provider_url  = embed[:provider_url]  || ''
     @card.width         = 0
     @card.height        = 0
 
     case @card.type
     when 'link'
-      @card.image_remote_url = embed.thumbnail_url if embed.respond_to?(:thumbnail_url)
+      @card.image_remote_url = embed[:thumbnail_url] if embed[:thumbnail_url].present?
     when 'photo'
-      return false unless embed.respond_to?(:url)
+      return false if embed[:url].blank?
 
-      @card.embed_url        = embed.url
-      @card.image_remote_url = embed.url
-      @card.width            = embed.width.presence  || 0
-      @card.height           = embed.height.presence || 0
+      @card.embed_url        = embed[:url]
+      @card.image_remote_url = embed[:url]
+      @card.width            = embed[:width].presence  || 0
+      @card.height           = embed[:height].presence || 0
     when 'video'
-      @card.width            = embed.width.presence  || 0
-      @card.height           = embed.height.presence || 0
-      @card.html             = Formatter.instance.sanitize(embed.html, Sanitize::Config::MASTODON_OEMBED)
-      @card.image_remote_url = embed.thumbnail_url if embed.respond_to?(:thumbnail_url)
+      @card.width            = embed[:width].presence  || 0
+      @card.height           = embed[:height].presence || 0
+      @card.html             = Formatter.instance.sanitize(embed[:html], Sanitize::Config::MASTODON_OEMBED)
+      @card.image_remote_url = embed[:thumbnail_url] if embed[:thumbnail_url].present?
     when 'rich'
       # Most providers rely on <script> tags, which is a no-no
       return false
     end
 
     @card.save_with_optional_image!
-  rescue OEmbed::NotFound
-    false
   end
 
   def attempt_opengraph
-- 
cgit