debian-mirror-gitlab/lib/gitlab/ci/yaml_processor/dag.rb

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# frozen_string_literal: true
# Represents Dag pipeline
module Gitlab
module Ci
class YamlProcessor
class Dag
include TSort
MissingNodeError = Class.new(StandardError)
def initialize(nodes)
@nodes = nodes
end
def self.check_circular_dependencies!(jobs)
nodes = jobs.values.to_h do |job|
name = job[:name].to_s
needs = job.dig(:needs, :job).to_a
[name, needs.map { |need| need[:name].to_s }]
end
new(nodes).tsort
rescue TSort::Cyclic
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raise ValidationError, 'The pipeline has circular dependencies'
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rescue MissingNodeError
end
def tsort_each_child(node, &block)
raise MissingNodeError, "node #{node} is missing" unless @nodes[node]
@nodes[node].each(&block)
end
def tsort_each_node(&block)
@nodes.each_key(&block)
end
end
end
end
end