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Lazy reaping (#4895)

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* Squash and rebase from gav-lazy-reaping

* Bump version

* Bump runtime again

* Docs.

* Remove old functions

* Update frame/balances/src/lib.rs

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update frame/contracts/src/lib.rs

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* Warnings

* Bump runtime version

* Update frame/democracy/src/lib.rs

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update frame/system/src/lib.rs

* Clean up OnReapAccount

* Use frame_support debug

* Bump spec

* Renames and fix

* Fix

* Fix rename

* Fix

* Increase time for test

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Benjamin Kampmann <ben.kampmann@googlemail.com>
This commit is contained in:
Gavin Wood
2020-02-24 14:04:42 -03:00
committed by GitHub
parent c412c6230e
commit afa5861f3b
62 changed files with 604 additions and 287 deletions
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substrate/frame/contracts/src/lib.rs
+7 -3
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@@ -125,7 +125,7 @@ use frame_support::{
parameter_types, IsSubType,
weights::DispatchInfo,
};
use frame_support::traits::{OnReapAccount, OnUnbalanced, Currency, Get, Time, Randomness};
use frame_support::traits::{OnKilledAccount, OnUnbalanced, Currency, Get, Time, Randomness};
use frame_system::{self as system, ensure_signed, RawOrigin, ensure_root};
use sp_core::storage::well_known_keys::CHILD_STORAGE_KEY_PREFIX;
use pallet_contracts_primitives::{RentProjection, ContractAccessError};
@@ -941,8 +941,12 @@ decl_storage! {
}
}
impl<T: Trait> OnReapAccount<T::AccountId> for Module<T> {
fn on_reap_account(who: &T::AccountId) {
// TODO: this should be removed in favour of a self-destruct contract host function allowing the
// contract to delete all storage and the `ContractInfoOf` key and transfer remaining balance to
// some other account. As it stands, it's an economic insecurity on any smart-contract chain.
// https://github.com/paritytech/substrate/issues/4952
impl<T: Trait> OnKilledAccount<T::AccountId> for Module<T> {
fn on_killed_account(who: &T::AccountId) {
if let Some(ContractInfo::Alive(info)) = <ContractInfoOf<T>>::take(who) {
child::kill_storage(&info.trie_id, info.child_trie_unique_id());
}