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// This file is part of Substrate. // Copyright (C) 2021 Parity Technologies (UK) Ltd. // SPDX-License-Identifier: Apache-2.0 // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. //! Supporting types for try-runtime, testing and dry-running commands. #![cfg_attr(not(feature = "std"), no_std)] use sp_std::prelude::*; use frame_support::weights::Weight; sp_api::decl_runtime_apis! { /// Runtime api for testing the execution of a runtime upgrade. pub trait TryRuntime { /// dry-run runtime upgrades, returning the total weight consumed. /// /// This should do EXACTLY the same operations as the runtime would have done in the case of /// a runtime upgrade (e.g. pallet ordering must be the same) /// /// Returns the consumed weight of the migration in case of a successful one, combined with /// the total allowed block weight of the runtime. fn on_runtime_upgrade() -> Result<(Weight, Weight), sp_runtime::RuntimeString>; } }