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class AddStageIdForeignKeyToBuilds < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
unless index_exists?(:ci_builds, :stage_id)
add_concurrent_index(:ci_builds, :stage_id)
end
unless foreign_key_exists?(:ci_builds, :stage_id)
add_concurrent_foreign_key(:ci_builds, :ci_stages, column: :stage_id, on_delete: :cascade)
end
end
def down
if foreign_key_exists?(:ci_builds, :stage_id)
remove_foreign_key(:ci_builds, column: :stage_id)
end
if index_exists?(:ci_builds, :stage_id)
remove_concurrent_index(:ci_builds, :stage_id)
end
end
private
def foreign_key_exists?(table, column)
foreign_keys(:ci_builds).any? do |key|
key.options[:column] == column.to_s
end
end
end
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