This repository has been archived by the owner on Nov 15, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2.6k
/
migrations.rs
69 lines (56 loc) · 2.4 KB
/
migrations.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
// This file is part of Substrate.
// Copyright (C) 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.
use crate::{
traits::{GetStorageVersion, PalletInfoAccess},
weights::{RuntimeDbWeight, Weight},
};
use impl_trait_for_tuples::impl_for_tuples;
/// Trait used by [`migrate_from_pallet_version_to_storage_version`] to do the actual migration.
pub trait PalletVersionToStorageVersionHelper {
fn migrate(db_weight: &RuntimeDbWeight) -> Weight;
}
impl<T: GetStorageVersion + PalletInfoAccess> PalletVersionToStorageVersionHelper for T {
fn migrate(db_weight: &RuntimeDbWeight) -> Weight {
const PALLET_VERSION_STORAGE_KEY_POSTFIX: &[u8] = b":__PALLET_VERSION__:";
fn pallet_version_key(name: &str) -> [u8; 32] {
crate::storage::storage_prefix(name.as_bytes(), PALLET_VERSION_STORAGE_KEY_POSTFIX)
}
sp_io::storage::clear(&pallet_version_key(<T as PalletInfoAccess>::name()));
let version = <T as GetStorageVersion>::current_storage_version();
version.put::<T>();
db_weight.writes(2)
}
}
#[cfg_attr(all(not(feature = "tuples-96"), not(feature = "tuples-128")), impl_for_tuples(64))]
#[cfg_attr(all(feature = "tuples-96", not(feature = "tuples-128")), impl_for_tuples(96))]
#[cfg_attr(feature = "tuples-128", impl_for_tuples(128))]
impl PalletVersionToStorageVersionHelper for T {
fn migrate(db_weight: &RuntimeDbWeight) -> Weight {
let mut weight = Weight::zero();
for_tuples!( #( weight = weight.saturating_add(T::migrate(db_weight)); )* );
weight
}
}
/// Migrate from the `PalletVersion` struct to the new
/// [`StorageVersion`](crate::traits::StorageVersion) struct.
///
/// This will remove all `PalletVersion's` from the state and insert the current storage version.
pub fn migrate_from_pallet_version_to_storage_version<
Pallets: PalletVersionToStorageVersionHelper,
>(
db_weight: &RuntimeDbWeight,
) -> Weight {
Pallets::migrate(db_weight)
}