mirror of
https://github.com/mastodon/mastodon.git
synced 2024-11-22 20:45:04 +01:00
741d0952b1
* Improve account counters handling * Use ActiveRecord::Base::sanitize_sql to pass values instead of interpolating them Keep using string interpolation for `key` as it is safe and using “ActiveRecord::Base::sanitize_sql_hash_for_assignment” would require stitching bits of SQL in a way that is not more easily checked for safety. * Add migration hook to catch PostgreSQL versions earlier than 9.5
90 lines
2.9 KiB
Ruby
90 lines
2.9 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module AccountCounters
|
|
extend ActiveSupport::Concern
|
|
|
|
ALLOWED_COUNTER_KEYS = %i(statuses_count following_count followers_count).freeze
|
|
|
|
included do
|
|
has_one :account_stat, inverse_of: :account
|
|
after_save :save_account_stat
|
|
end
|
|
|
|
delegate :statuses_count,
|
|
:statuses_count=,
|
|
:following_count,
|
|
:following_count=,
|
|
:followers_count,
|
|
:followers_count=,
|
|
:last_status_at,
|
|
to: :account_stat
|
|
|
|
# @param [Symbol] key
|
|
def increment_count!(key)
|
|
update_count!(key, 1)
|
|
end
|
|
|
|
# @param [Symbol] key
|
|
def decrement_count!(key)
|
|
update_count!(key, -1)
|
|
end
|
|
|
|
# @param [Symbol] key
|
|
# @param [Integer] value
|
|
def update_count!(key, value)
|
|
raise ArgumentError, "Invalid key #{key}" unless ALLOWED_COUNTER_KEYS.include?(key)
|
|
raise ArgumentError, 'Do not call update_count! on dirty objects' if association(:account_stat).loaded? && account_stat&.changed? && account_stat.changed_attribute_names_to_save == %w(id)
|
|
|
|
value = value.to_i
|
|
default_value = value.positive? ? value : 0
|
|
|
|
# We do an upsert using manually written SQL, as Rails' upsert method does
|
|
# not seem to support writing expressions in the UPDATE clause, but only
|
|
# re-insert the provided values instead.
|
|
# Even ARel seem to be missing proper handling of upserts.
|
|
sql = if value.positive? && key == :statuses_count
|
|
<<-SQL.squish
|
|
INSERT INTO account_stats(account_id, #{key}, created_at, updated_at, last_status_at)
|
|
VALUES (:account_id, :default_value, now(), now(), now())
|
|
ON CONFLICT (account_id) DO UPDATE
|
|
SET #{key} = account_stats.#{key} + :value,
|
|
last_status_at = now(),
|
|
lock_version = account_stats.lock_version + 1,
|
|
updated_at = now()
|
|
RETURNING id;
|
|
SQL
|
|
else
|
|
<<-SQL.squish
|
|
INSERT INTO account_stats(account_id, #{key}, created_at, updated_at)
|
|
VALUES (:account_id, :default_value, now(), now())
|
|
ON CONFLICT (account_id) DO UPDATE
|
|
SET #{key} = account_stats.#{key} + :value,
|
|
lock_version = account_stats.lock_version + 1,
|
|
updated_at = now()
|
|
RETURNING id;
|
|
SQL
|
|
end
|
|
|
|
sql = AccountStat.sanitize_sql([sql, account_id: id, default_value: default_value, value: value])
|
|
account_stat_id = AccountStat.connection.exec_query(sql)[0]['id']
|
|
|
|
# Reload account_stat if it was loaded, taking into account newly-created unsaved records
|
|
if association(:account_stat).loaded?
|
|
account_stat.id = account_stat_id if account_stat.new_record?
|
|
account_stat.reload
|
|
end
|
|
end
|
|
|
|
def account_stat
|
|
super || build_account_stat
|
|
end
|
|
|
|
private
|
|
|
|
def save_account_stat
|
|
return unless association(:account_stat).loaded? && account_stat&.changed?
|
|
|
|
account_stat.save
|
|
end
|
|
end
|