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# frozen_string_literal: true
class AddTmpUniquePackagesIndexWhenDebian < Gitlab::Database::Migration[2.1]
TABLE_NAME = :packages_packages
PACKAGE_TYPE_DEBIAN = 9
PACKAGE_STATUS_PENDING_DESTRUCTION = 4
TMP_DEBIAN_UNIQUE_INDEX_NAME = 'tmp_unique_packages_project_id_and_name_and_version_when_debian'
disable_ddl_transaction!
def up
# This index will disallow further duplicates while we're deduplicating the data.
add_concurrent_index TABLE_NAME, [:project_id, :name, :version],
where: "package_type = #{PACKAGE_TYPE_DEBIAN} AND status != #{PACKAGE_STATUS_PENDING_DESTRUCTION} AND
created_at > TIMESTAMP WITH TIME ZONE '#{Time.now.utc}'",
unique: true,
name: TMP_DEBIAN_UNIQUE_INDEX_NAME
end
def down
remove_concurrent_index_by_name TABLE_NAME, TMP_DEBIAN_UNIQUE_INDEX_NAME
end
end
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