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Make automatic storage deposits resistant against changing deposit prices (#12083)

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* Require `FixedPointOperand` for Balances

* Delay deposit calculation

* Make refunds pro rata of consumed storage

* Add storage migration

* Fix clippy

* Add liquidity checks

* Fixe delayed deposit limit enforcement

* Defer charges

* Import Vec

* Add try-runtime hooks for migration

* Fix warning

* Adapt to new OnRuntimeUpgrade trait

* Apply suggestions from code review

Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>

* fmt

* Apply suggestions from code review

Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>

* More suggestions from code review

Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>
This commit is contained in:
Alexander Theißen
2022-09-21 19:31:22 +02:00
committed by GitHub
parent cb82064cb8
commit 857c3bf37b
12 changed files with 957 additions and 312 deletions
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substrate/frame/support/src/traits/tokens/currency.rs
+2 -2
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@@ -26,7 +26,7 @@ use crate::{
traits::Get,
};
use codec::MaxEncodedLen;
use sp_runtime::traits::MaybeSerializeDeserialize;
use sp_runtime::{traits::MaybeSerializeDeserialize, FixedPointOperand};
use sp_std::fmt::Debug;
mod reservable;
@@ -37,7 +37,7 @@ pub use lockable::{LockIdentifier, LockableCurrency, VestingSchedule};
/// Abstraction over a fungible assets system.
pub trait Currency<AccountId> {
/// The balance of an account.
type Balance: Balance + MaybeSerializeDeserialize + Debug + MaxEncodedLen;
type Balance: Balance + MaybeSerializeDeserialize + Debug + MaxEncodedLen + FixedPointOperand;
/// The opaque token type for an imbalance. This is returned by unbalanced operations
/// and must be dealt with. It may be dropped but cannot be cloned.