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# frozen_string_literal: true
class GroupProtectedEnvironmentsAddIndexAndConstraint < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
INDEX_NAME = 'index_protected_environments_on_group_id_and_name'
disable_ddl_transaction!
def up
add_concurrent_index :protected_environments, [:group_id, :name], unique: true,
name: INDEX_NAME, where: 'group_id IS NOT NULL'
add_concurrent_foreign_key :protected_environments, :namespaces, column: :group_id, on_delete: :cascade
add_check_constraint :protected_environments,
"((project_id IS NULL) != (group_id IS NULL))",
:protected_environments_project_or_group_existence
end
def down
remove_group_protected_environments!
remove_check_constraint :protected_environments, :protected_environments_project_or_group_existence
remove_foreign_key_if_exists :protected_environments, column: :group_id
remove_concurrent_index_by_name :protected_environments, name: INDEX_NAME
end
private
def remove_group_protected_environments!
execute <<-SQL
DELETE FROM protected_environments WHERE group_id IS NOT NULL
SQL
end
end
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