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contracts: Don't rely on reserved balances keeping an account alive (#13369)

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* Move storage deposits to their own account

* Take ed for contract's account from origin

* Apply suggestions from code review

Co-authored-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>

* Update stale docs

* Use 16 bytes prefix for address derivation

* Update frame/contracts/src/address.rs

Co-authored-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

* Fix merge

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_contracts

* Update frame/contracts/primitives/src/lib.rs

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

---------

Co-authored-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
Co-authored-by: Sasha Gryaznov <hi@agryaznov.com>
Co-authored-by: command-bot <>
This commit is contained in:
Alexander Theißen
2023-02-16 16:58:28 +01:00
committed by GitHub
parent 292e5ee4e7
commit 330484bb19
11 changed files with 2109 additions and 2184 deletions
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substrate/frame/contracts/primitives/src/lib.rs
+9 -7
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@@ -47,10 +47,12 @@ pub struct ContractResult<R, Balance> {
/// Additionally, any `seal_call` or `seal_instantiate` makes use of pre-charging
/// when a non-zero `gas_limit` argument is supplied.
pub gas_required: Weight,
/// How much balance was deposited and reserved during execution in order to pay for storage.
/// How much balance was paid by the origin into the contract's deposit account in order to
/// pay for storage.
///
/// The storage deposit is never actually charged from the caller in case of [`Self::result`]
/// is `Err`. This is because on error all storage changes are rolled back.
/// The storage deposit is never actually charged from the origin in case of [`Self::result`]
/// is `Err`. This is because on error all storage changes are rolled back including the
/// payment of the deposit.
pub storage_deposit: StorageDeposit<Balance>,
/// An optional debug message. This message is only filled when explicitly requested
/// by the code that calls into the contract. Otherwise it is empty.
@@ -159,12 +161,12 @@ pub enum StorageDeposit<Balance> {
/// The transaction reduced storage consumption.
///
/// This means that the specified amount of balance was transferred from the involved
/// contracts to the call origin.
/// deposit accounts to the origin.
Refund(Balance),
/// The transaction increased overall storage usage.
/// The transaction increased storage consumption.
///
/// This means that the specified amount of balance was transferred from the call origin
/// to the contracts involved.
/// This means that the specified amount of balance was transferred from the origin
/// to the involved deposit accounts.
Charge(Balance),
}