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# frozen_string_literal: true
module Ci
module Partitionable
module Switch
extend ActiveSupport::Concern
# These methods are cached at the class level and depend on the value
# of `table_name`, changing that value resets them.
# `cached_find_by_statement` is used to cache SQL statements which can
# include the table name.
#
SWAPABLE_METHODS = %i[table_name quoted_table_name arel_table
predicate_builder cached_find_by_statement].freeze
included do |base|
partitioned = Class.new(base) do
self.table_name = base.routing_table_name
def self.routing_class?
true
end
end
base.const_set(:Partitioned, partitioned)
end
class_methods do
def routing_class?
false
end
def routing_table_enabled?
return false if routing_class?
Gitlab::SafeRequestStore.fetch(routing_table_name_flag) do
::Feature.enabled?(routing_table_name_flag)
end
end
# We're delegating them to the `Partitioned` model.
# They do not require any check override since they come from AR core
# (are always defined) and we're using `super` to get the value.
#
SWAPABLE_METHODS.each do |name|
define_method(name) do |*args, &block|
if routing_table_enabled?
self::Partitioned.public_send(name, *args, &block) # rubocop: disable GitlabSecurity/PublicSend
else
super(*args, &block)
end
end
end
end
end
end
end
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