54 lines
1.3 KiB
Ruby
54 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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require_relative '../../migration_helpers'
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module RuboCop
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module Cop
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module Migration
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# Cop that checks if `add_concurrent_foreign_key` is used instead of
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# `add_foreign_key`.
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class AddConcurrentForeignKey < RuboCop::Cop::Cop
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include MigrationHelpers
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MSG = '`add_foreign_key` requires downtime, use `add_concurrent_foreign_key` instead'
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def_node_matcher :false_node?, <<~PATTERN
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(false)
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PATTERN
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def_node_matcher :with_lock_retries?, <<~PATTERN
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(:send nil? :with_lock_retries)
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PATTERN
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def on_send(node)
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return unless in_migration?(node)
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name = node.children[1]
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return unless name == :add_foreign_key
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return if in_with_lock_retries?(node)
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return if not_valid_fk?(node)
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add_offense(node, location: :selector)
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end
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def method_name(node)
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node.children.first
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end
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def not_valid_fk?(node)
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node.each_node(:pair).any? do |pair|
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pair.children[0].children[0] == :validate && false_node?(pair.children[1])
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end
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end
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def in_with_lock_retries?(node)
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node.each_ancestor(:block).any? do |parent|
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with_lock_retries?(parent.to_a.first)
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end
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end
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end
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end
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end
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end
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