56 lines
1.3 KiB
Ruby
56 lines
1.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module Gitlab
|
|
class SafeRequestLoader
|
|
def self.execute(args, &block)
|
|
new(**args).execute(&block)
|
|
end
|
|
|
|
def initialize(resource_key:, resource_ids:, default_value: nil)
|
|
@resource_key = resource_key
|
|
@resource_ids = resource_ids.uniq
|
|
@default_value = default_value
|
|
@resource_data = {}
|
|
end
|
|
|
|
def execute(&block)
|
|
raise ArgumentError, 'Block is mandatory' unless block
|
|
|
|
load_resource_data
|
|
remove_loaded_resource_ids
|
|
|
|
update_resource_data(&block)
|
|
|
|
resource_data
|
|
end
|
|
|
|
private
|
|
|
|
attr_reader :resource_key, :resource_ids, :default_value, :resource_data, :missing_resource_ids
|
|
|
|
def load_resource_data
|
|
@resource_data = Gitlab::SafeRequestStore.fetch(resource_key) { resource_data }
|
|
end
|
|
|
|
def remove_loaded_resource_ids
|
|
# Look up only the IDs we need
|
|
@missing_resource_ids = resource_ids - resource_data.keys
|
|
end
|
|
|
|
def update_resource_data(&block)
|
|
return if missing_resource_ids.blank?
|
|
|
|
reloaded_resource_data = yield(missing_resource_ids)
|
|
|
|
@resource_data.merge!(reloaded_resource_data)
|
|
|
|
mark_absent_values
|
|
end
|
|
|
|
def mark_absent_values
|
|
absent = (missing_resource_ids - resource_data.keys).to_h { [_1, default_value] }
|
|
@resource_data.merge!(absent)
|
|
end
|
|
end
|
|
end
|