gitlab-org--gitlab-foss/lib/gitlab/import_export/attributes_finder.rb
Kamil Trzciński 8d1e97fc3b Optimise import performance
- Fix `O(n)` complexity of `append_or_update_attribute`,
  we append objects to an array and re-save project
- Remove the usage of `keys.include?` as it performs `O(n)`
  search, instead use `.has_key?`
- Remove the usage of `.keys.first` as it performs a copy
  of all keys, instead use `.first.first`
2019-07-24 16:24:28 +02:00

52 lines
1.5 KiB
Ruby

# frozen_string_literal: true
module Gitlab
module ImportExport
class AttributesFinder
def initialize(included_attributes:, excluded_attributes:, methods:)
@included_attributes = included_attributes || {}
@excluded_attributes = excluded_attributes || {}
@methods = methods || {}
end
def find(model_object)
parsed_hash = find_attributes_only(model_object)
parsed_hash.empty? ? model_object : { model_object => parsed_hash }
end
def parse(model_object)
parsed_hash = find_attributes_only(model_object)
yield parsed_hash unless parsed_hash.empty?
end
def find_included(value)
key = key_from_hash(value)
@included_attributes[key].nil? ? {} : { only: @included_attributes[key] }
end
def find_excluded(value)
key = key_from_hash(value)
@excluded_attributes[key].nil? ? {} : { except: @excluded_attributes[key] }
end
def find_method(value)
key = key_from_hash(value)
@methods[key].nil? ? {} : { methods: @methods[key] }
end
def find_excluded_keys(klass_name)
@excluded_attributes[klass_name.to_sym]&.map(&:to_s) || []
end
private
def find_attributes_only(value)
find_included(value).merge(find_excluded(value)).merge(find_method(value))
end
def key_from_hash(value)
value.is_a?(Hash) ? value.first.first : value
end
end
end
end