mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 22:11:02 +00:00
Robert Habermeier
49f7e5cce4
* remove v0 primitives from polkadot-primitives * first pass: remove v0 * fix fallout in erasure-coding * remove v1 primitives, consolidate to v2 * the great import update * update runtime_api_impl_v1 to v2 as well * guide: add `Version` request for runtime API * add version query to runtime API * reintroduce OldV1SessionInfo in a limited way
45 lines
1.5 KiB
Rust
45 lines
1.5 KiB
Rust
// Copyright 2021 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Polkadot is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//! A module that is responsible for migration of storage.
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use crate::session_info::{Config, Pallet, Store};
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use frame_support::{pallet_prelude::*, traits::StorageVersion, weights::Weight};
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/// The current storage version.
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pub const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
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/// Migrates the pallet storage to the most recent version, checking and setting the `StorageVersion`.
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pub fn migrate_to_latest<T: Config>() -> Weight {
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let mut weight = 0;
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if StorageVersion::get::<Pallet<T>>() < 1 {
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weight += migrate_to_v1::<T>();
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StorageVersion::new(1).put::<Pallet<T>>();
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}
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weight
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}
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pub fn migrate_to_v1<T: Config>() -> Weight {
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let mut vs = 0;
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<Pallet<T> as Store>::Sessions::translate_values(|old: primitives::v2::OldV1SessionInfo| {
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vs += 1;
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Some(primitives::v2::SessionInfo::from(old))
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});
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T::DbWeight::get().reads_writes(vs, vs)
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}
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