59 lines
1.6 KiB
Ruby
59 lines
1.6 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module RuboCop
|
|
module Cop
|
|
module UsageData
|
|
# This cop checks that histogram method is not used in usage_data.rb files
|
|
# for models representing large tables, as defined by migration helpers.
|
|
#
|
|
# @example
|
|
#
|
|
# # bad
|
|
# histogram(Issue, buckets: 1..100)
|
|
# histogram(User.active, buckets: 1..100)
|
|
class HistogramWithLargeTable < RuboCop::Cop::Cop
|
|
MSG = 'Avoid histogram method on %{model_name}'
|
|
|
|
# Match one level const as Issue, Gitlab
|
|
def_node_matcher :one_level_node, <<~PATTERN
|
|
(send nil? :histogram
|
|
`(const {nil? cbase} $_)
|
|
...)
|
|
PATTERN
|
|
|
|
# Match two level const as ::Clusters::Cluster, ::Ci::Pipeline
|
|
def_node_matcher :two_level_node, <<~PATTERN
|
|
(send nil? :histogram
|
|
`(const
|
|
(const {nil? cbase} $_)
|
|
$_)
|
|
...)
|
|
PATTERN
|
|
|
|
def on_send(node)
|
|
one_level_matches = one_level_node(node)
|
|
two_level_matches = two_level_node(node)
|
|
|
|
return unless Array(one_level_matches).any? || Array(two_level_matches).any?
|
|
|
|
class_name = two_level_matches ? two_level_matches.join('::').to_sym : one_level_matches
|
|
|
|
if large_table?(class_name)
|
|
add_offense(node, location: :expression, message: format(MSG, model_name: class_name))
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def large_table?(model)
|
|
high_traffic_models.include?(model.to_s)
|
|
end
|
|
|
|
def high_traffic_models
|
|
cop_config['HighTrafficModels'] || []
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|