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mastodon/app/models/follow.rb
ThibG f1f96ebf02
Fix being able to import more than allowed number of follows (#15384)
* Fix being able to import more than allowed number of follows

Without this commit, if someone tries importing a second list of accounts to
follow before the first one has been processed, this will queue imports for
the two whole lists, even if they exceed the account's allowed number of
outgoing follows.

This commit changes it so the individual queued imports aren't exempt from
the follow limit check (they remain exempt from the rate-limiting check
though).

* Catch validation errors to not re-queue failed follows

Co-authored-by: Claire <claire.github-309c@sitedethib.com>
2020-12-26 23:52:46 +01:00

75 lines
2.1 KiB
Ruby

# frozen_string_literal: true
# == Schema Information
#
# Table name: follows
#
# id :bigint(8) not null, primary key
# created_at :datetime not null
# updated_at :datetime not null
# account_id :bigint(8) not null
# target_account_id :bigint(8) not null
# show_reblogs :boolean default(TRUE), not null
# uri :string
# notify :boolean default(FALSE), not null
#
class Follow < ApplicationRecord
include Paginable
include RelationshipCacheable
include RateLimitable
include FollowLimitable
rate_limit by: :account, family: :follows
belongs_to :account
belongs_to :target_account, class_name: 'Account'
has_one :notification, as: :activity, dependent: :destroy
validates :account_id, uniqueness: { scope: :target_account_id }
scope :recent, -> { reorder(id: :desc) }
def local?
false # Force uri_for to use uri attribute
end
def revoke_request!
FollowRequest.create!(account: account, target_account: target_account, show_reblogs: show_reblogs, notify: notify, uri: uri)
destroy!
end
before_validation :set_uri, only: :create
after_create :increment_cache_counters
after_create :invalidate_hash_cache
after_destroy :remove_endorsements
after_destroy :decrement_cache_counters
after_destroy :invalidate_hash_cache
private
def set_uri
self.uri = ActivityPub::TagManager.instance.generate_uri_for(self) if uri.nil?
end
def remove_endorsements
AccountPin.where(target_account_id: target_account_id, account_id: account_id).delete_all
end
def increment_cache_counters
account&.increment_count!(:following_count)
target_account&.increment_count!(:followers_count)
end
def decrement_cache_counters
account&.decrement_count!(:following_count)
target_account&.decrement_count!(:followers_count)
end
def invalidate_hash_cache
return if account.local? && target_account.local?
Rails.cache.delete("followers_hash:#{target_account_id}:#{account.synchronization_uri_prefix}")
end
end