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Fix unbounded recursion in account discovery (#22025)

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* Fix trying to fetch posts from other users when fetching featured posts

* Rate-limit discovery of new subdomains

* Put a limit on recursively discovering new accounts
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Claire 2022-12-07 00:15:24 +01:00 • committed by GitHub
parent 98a9347dd7
commit c8849d6cee
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12 changed files with 147 additions and 18 deletions
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15
app/models/concerns/domain_materializable.rb
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@ -3,11 +3,24 @@
module DomainMaterializable
extend ActiveSupport::Concern
include Redisable
included do
after_create_commit :refresh_instances_view
end
def refresh_instances_view
Instance.refresh unless domain.nil? || Instance.where(domain: domain).exists?
return if domain.nil? || Instance.exists?(domain: domain)
Instance.refresh
count_unique_subdomains!
end
def count_unique_subdomains!
second_and_top_level_domain = PublicSuffix.domain(domain, ignore_private: true)
with_redis do |redis|
redis.pfadd("unique_subdomains_for:#{second_and_top_level_domain}", domain)
redis.expire("unique_subdomains_for:#{second_and_top_level_domain}", 1.minute.seconds)
end
end
end