gitlab-org--gitlab-foss/lib/gitlab/config/entry/node.rb

125 lines
2.5 KiB
Ruby

# frozen_string_literal: true
module Gitlab
module Config
module Entry
##
# Base abstract class for each configuration entry node.
#
class Node
InvalidError = Class.new(StandardError)
attr_reader :config, :metadata
attr_accessor :key, :parent, :default, :description
def initialize(config, **metadata)
@config = config
@metadata = metadata
@entries = {}
yield(self) if block_given?
self.class.aspects.to_a.each do |aspect|
instance_exec(&aspect)
end
end
def [](key)
@entries[key] || Entry::Undefined.new
end
def compose!(deps = nil)
return unless valid?
yield if block_given?
end
def leaf?
@entries.none?
end
def descendants
@entries.values
end
def ancestors
@parent ? @parent.ancestors + [@parent] : []
end
def opt(key)
opt = metadata[key]
opt = @parent.opt(key) if opt.nil? && @parent
opt
end
def valid?
errors.none?
end
def errors
[]
end
def value
if leaf?
@config
else
meaningful = @entries.select do |_key, value|
value.specified? && value.relevant?
end
Hash[meaningful.map { |key, entry| [key, entry.value] }]
end
end
def specified?
true
end
def relevant?
true
end
def location
name = @key.presence || self.class.name.to_s.demodulize
.underscore.humanize.downcase
ancestors.map(&:key).append(name).compact.join(':')
end
def inspect
val = leaf? ? config : descendants
unspecified = specified? ? '' : '(unspecified) '
"#<#{self.class.name} #{unspecified}{#{key}: #{val.inspect}}>"
end
def hash?
@config.is_a?(Hash)
end
def string?
@config.is_a?(String)
end
def integer?
@config.is_a?(Integer)
end
def self.default(**)
end
def self.aspects
@aspects ||= []
end
def self.with_aspect(blk)
self.aspects.append(blk)
end
private
attr_reader :entries
end
end
end
end