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Contents
# frozen_string_literal: true
module Karafka
module Contracts
# Contract for single full route (consumer group + topics) validation.
class ConsumerGroup < Base
configure do |config|
config.error_messages = YAML.safe_load(
File.read(
File.join(Karafka.gem_root, 'config', 'locales', 'errors.yml')
)
).fetch('en').fetch('validations').fetch('consumer_group')
end
required(:id) { |val| val.is_a?(String) && Contracts::TOPIC_REGEXP.match?(val) }
required(:topics) { |val| val.is_a?(Array) && !val.empty? }
virtual do |data, errors|
next unless errors.empty?
names = data.fetch(:topics).map { |topic| topic_unique_key(topic) }
next if names.size == names.uniq.size
[[%i[topics], :names_not_unique]]
end
virtual do |data, errors|
next unless errors.empty?
next unless ::Karafka::App.config.strict_topics_namespacing
names = data.fetch(:topics).map { |topic| topic[:name] }
names_hash = names.each_with_object({}) { |n, h| h[n] = true }
error_occured = false
names.each do |n|
# Skip topic names that are not namespaced
next unless n.chars.find { |c| ['.', '_'].include?(c) }
if n.chars.include?('.')
# Check underscore styled topic
underscored_topic = n.tr('.', '_')
error_occured = names_hash[underscored_topic] ? true : false
else
# Check dot styled topic
dot_topic = n.tr('_', '.')
error_occured = names_hash[dot_topic] ? true : false
end
end
next unless error_occured
[[%i[topics], :topics_namespaced_names_not_unique]]
end
class << self
# @param topic [Hash] topic config hash
# @return [String] topic unique key for validators
def topic_unique_key(topic)
topic[:name]
end
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems