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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135

// 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.

//! Add `delegate_dependencies` to `ContractInfo`.
//! See <https://github.com/paritytech/substrate/pull/14079>.

use crate::{
	migration::{IsFinished, MigrationStep},
	weights::WeightInfo,
	AccountIdOf, BalanceOf, CodeHash, Config, Pallet, TrieId, Weight, LOG_TARGET,
};
use codec::{Decode, Encode};
use frame_support::{pallet_prelude::*, storage_alias, DefaultNoBound};
use sp_runtime::BoundedBTreeMap;
use sp_std::prelude::*;

mod old {
	use super::*;

	#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
	#[scale_info(skip_type_params(T))]
	pub struct ContractInfo<T: Config> {
		pub trie_id: TrieId,
		pub deposit_account: AccountIdOf<T>,
		pub code_hash: CodeHash<T>,
		pub storage_bytes: u32,
		pub storage_items: u32,
		pub storage_byte_deposit: BalanceOf<T>,
		pub storage_item_deposit: BalanceOf<T>,
		pub storage_base_deposit: BalanceOf<T>,
	}

	#[storage_alias]
	pub type ContractInfoOf<T: Config> = StorageMap<
		Pallet<T>,
		Twox64Concat,
		<T as frame_system::Config>::AccountId,
		ContractInfo<T>,
	>;
}

#[cfg(feature = "runtime-benchmarks")]
pub fn store_old_contract_info<T: Config>(account: T::AccountId, info: crate::ContractInfo<T>) {
	use sp_runtime::traits::{Hash, TrailingZeroInput};
	let entropy = (b"contract_depo_v1", account.clone()).using_encoded(T::Hashing::hash);
	let deposit_account = Decode::decode(&mut TrailingZeroInput::new(entropy.as_ref()))
		.expect("infinite length input; no invalid inputs for type; qed");
	let info = old::ContractInfo {
		trie_id: info.trie_id.clone(),
		deposit_account,
		code_hash: info.code_hash,
		storage_bytes: Default::default(),
		storage_items: Default::default(),
		storage_byte_deposit: Default::default(),
		storage_item_deposit: Default::default(),
		storage_base_deposit: Default::default(),
	};
	old::ContractInfoOf::<T>::insert(account, info);
}

#[storage_alias]
pub type ContractInfoOf<T: Config> =
	StorageMap<Pallet<T>, Twox64Concat, <T as frame_system::Config>::AccountId, ContractInfo<T>>;

#[derive(Encode, Decode, CloneNoBound, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
#[scale_info(skip_type_params(T))]
pub struct ContractInfo<T: Config> {
	trie_id: TrieId,
	deposit_account: AccountIdOf<T>,
	code_hash: CodeHash<T>,
	storage_bytes: u32,
	storage_items: u32,
	storage_byte_deposit: BalanceOf<T>,
	storage_item_deposit: BalanceOf<T>,
	storage_base_deposit: BalanceOf<T>,
	delegate_dependencies: BoundedBTreeMap<CodeHash<T>, BalanceOf<T>, T::MaxDelegateDependencies>,
}

#[derive(Encode, Decode, MaxEncodedLen, DefaultNoBound)]
pub struct Migration<T: Config> {
	last_account: Option<T::AccountId>,
}

impl<T: Config> MigrationStep for Migration<T> {
	const VERSION: u16 = 13;

	fn max_step_weight() -> Weight {
		T::WeightInfo::v13_migration_step()
	}

	fn step(&mut self) -> (IsFinished, Weight) {
		let mut iter = if let Some(last_account) = self.last_account.take() {
			old::ContractInfoOf::<T>::iter_from(old::ContractInfoOf::<T>::hashed_key_for(
				last_account,
			))
		} else {
			old::ContractInfoOf::<T>::iter()
		};

		if let Some((key, old)) = iter.next() {
			log::debug!(target: LOG_TARGET, "Migrating contract {:?}", key);
			let info = ContractInfo {
				trie_id: old.trie_id,
				deposit_account: old.deposit_account,
				code_hash: old.code_hash,
				storage_bytes: old.storage_bytes,
				storage_items: old.storage_items,
				storage_byte_deposit: old.storage_byte_deposit,
				storage_item_deposit: old.storage_item_deposit,
				storage_base_deposit: old.storage_base_deposit,
				delegate_dependencies: Default::default(),
			};
			ContractInfoOf::<T>::insert(key.clone(), info);
			self.last_account = Some(key);
			(IsFinished::No, T::WeightInfo::v13_migration_step())
		} else {
			log::debug!(target: LOG_TARGET, "No more contracts to migrate");
			(IsFinished::Yes, T::WeightInfo::v13_migration_step())
		}
	}
}