124 lines
3.7 KiB
Ruby
124 lines
3.7 KiB
Ruby
# frozen_string_literal: true
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require 'yaml'
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require 'set'
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# These methods are called by `sidekiq-cluster`, which runs outside of
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# the bundler/Rails context, so we cannot use any gem or Rails methods.
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module Gitlab
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module SidekiqConfig
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module CliMethods
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# The methods in this module are used as module methods
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# rubocop:disable Gitlab/ModuleWithInstanceVariables
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extend self
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QUEUE_CONFIG_PATHS = begin
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result = %w[app/workers/all_queues.yml]
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result << 'ee/app/workers/all_queues.yml' if Gitlab.ee?
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result
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end.freeze
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QUERY_OR_OPERATOR = '|'
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QUERY_AND_OPERATOR = '&'
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QUERY_CONCATENATE_OPERATOR = ','
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QUERY_TERM_REGEX = %r{^(\w+)(!?=)([\w:#{QUERY_CONCATENATE_OPERATOR}]+)}.freeze
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QUERY_PREDICATES = {
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feature_category: :to_sym,
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has_external_dependencies: lambda { |value| value == 'true' },
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name: :to_s,
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resource_boundary: :to_sym,
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urgency: :to_sym
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}.freeze
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QueryError = Class.new(StandardError)
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InvalidTerm = Class.new(QueryError)
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UnknownOperator = Class.new(QueryError)
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UnknownPredicate = Class.new(QueryError)
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def all_queues(rails_path = Rails.root.to_s)
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@worker_queues ||= {}
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@worker_queues[rails_path] ||= QUEUE_CONFIG_PATHS.flat_map do |path|
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full_path = File.join(rails_path, path)
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File.exist?(full_path) ? YAML.load_file(full_path) : []
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end
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end
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# rubocop:enable Gitlab/ModuleWithInstanceVariables
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def worker_queues(rails_path = Rails.root.to_s)
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worker_names(all_queues(rails_path))
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end
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def expand_queues(queues, all_queues = self.worker_queues)
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return [] if queues.empty?
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queues_set = all_queues.to_set
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queues.flat_map do |queue|
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[queue, *queues_set.grep(/\A#{queue}:/)]
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end
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end
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def query_workers(query_string, queues)
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worker_names(queues.select(&query_string_to_lambda(query_string)))
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end
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def clear_memoization!
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if instance_variable_defined?('@worker_queues')
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remove_instance_variable('@worker_queues')
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end
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end
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private
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def worker_names(workers)
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workers.map { |queue| queue[:name] }
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end
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def query_string_to_lambda(query_string)
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or_clauses = query_string.split(QUERY_OR_OPERATOR).map do |and_clauses_string|
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and_clauses_predicates = and_clauses_string.split(QUERY_AND_OPERATOR).map do |term|
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predicate_for_term(term)
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end
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lambda { |worker| and_clauses_predicates.all? { |predicate| predicate.call(worker) } }
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end
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lambda { |worker| or_clauses.any? { |predicate| predicate.call(worker) } }
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end
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def predicate_for_term(term)
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match = term.match(QUERY_TERM_REGEX)
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raise InvalidTerm.new("Invalid term: #{term}") unless match
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_, lhs, op, rhs = *match
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predicate_for_op(op, predicate_factory(lhs, rhs.split(QUERY_CONCATENATE_OPERATOR)))
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end
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def predicate_for_op(op, predicate)
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case op
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when '='
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predicate
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when '!='
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lambda { |worker| !predicate.call(worker) }
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else
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# This is unreachable because InvalidTerm will be raised instead, but
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# keeping it allows to guard against that changing in future.
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raise UnknownOperator.new("Unknown operator: #{op}")
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end
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end
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def predicate_factory(lhs, values)
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values_block = QUERY_PREDICATES[lhs.to_sym]
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raise UnknownPredicate.new("Unknown predicate: #{lhs}") unless values_block
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lambda { |queue| values.map(&values_block).include?(queue[lhs.to_sym]) }
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end
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end
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end
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end
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