Contracts: runtime_call and storage_deposit #13990

pgherveou · 2023-04-24T14:12:05Z

This PR makes the charge function fallible, so that when the the caller is unable to pay for the storage deposit we rollback the whole transaction.

frame/contracts/src/lib.rs

pgherveou · 2023-04-25T08:06:02Z

frame/contracts/src/tests.rs

+			data.encode(),
+		);
+
+		assert_err_ignore_postinfo!(result, TokenError::FundsUnavailable);


would be nice to test that the transaction gas were actually charge to the user, but I am not too sure how this can be done within our test framework

can't you just check that Alice's balance became lower than it was before the tx?

Updated the test, so we can validate that the fees are the same whether the transaction fails (because the payment failed) or not.
I don't think we can test Alice's balance because as far as I know, this would be done in the pre/post hook of the transaction_payment pallet that does not exist in the Test config

for reference

substrate/frame/transaction-payment/src/lib.rs

Lines 816 to 842 in ec43399

fn pre_dispatch(

self,

who: &Self::AccountId,

call: &Self::Call,

info: &DispatchInfoOf<Self::Call>,

len: usize,

) -> Result<Self::Pre, TransactionValidityError> {

let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;

Ok((self.0, who.clone(), imbalance))

}

fn post_dispatch(

maybe_pre: Option<Self::Pre>,

info: &DispatchInfoOf<Self::Call>,

post_info: &PostDispatchInfoOf<Self::Call>,

len: usize,

_result: &DispatchResult,

) -> Result<(), TransactionValidityError> {

if let Some((tip, who, imbalance)) = maybe_pre {

let actual_fee = Pallet::<T>::compute_actual_fee(len as u32, info, post_info, tip);

T::OnChargeTransaction::correct_and_deposit_fee(

&who, info, post_info, actual_fee, tip, imbalance,

)?;

Pallet::<T>::deposit_event(Event::<T>::TransactionFeePaid { who, actual_fee, tip });

}

Ok(())

}

You can check the events emitted during execution. We do that in other tests. There is a event for transaction fee payment.

we would need the transaction_payment pallet for this in test, I don't think we have it 🤔 might have overlooked, will check again

Ahh yeah. You are right. We didn't set this up in tests. It is fine. We don't really need to test this.

frame/contracts/src/tests.rs

agryaznov

Just some nitpicks

frame/contracts/src/tests.rs

frame/contracts/fixtures/call_runtime_and_call.wat

agryaznov · 2023-04-25T11:10:43Z

frame/contracts/src/tests.rs

+			data.encode(),
+		);
+
+		assert_err_ignore_postinfo!(result, TokenError::FundsUnavailable);


can't you just check that Alice's balance became lower than it was before the tx?

frame/contracts/src/lib.rs

agryaznov · 2023-04-25T13:30:04Z

also some PR description would be great to have

Co-authored-by: Sasha Gryaznov <[email protected]>

frame/contracts/src/tests.rs

pgherveou · 2023-04-27T09:37:10Z

bot help

command-bot · 2023-04-27T09:37:13Z

Here's a link to docs

pgherveou · 2023-04-27T09:37:52Z

bot rebase

…runtime

paritytech-processbot · 2023-04-27T09:37:58Z

Rebased

frame/contracts/src/tests.rs

agryaznov · 2023-04-28T19:43:08Z

frame/contracts/src/storage/meter.rs

@@ -366,14 +366,14 @@ where
 	///


docs above this line could be improved a bit to reflect the fact this is now a fallible fn

pgherveou · 2023-04-29T16:07:47Z

bot merge

* wip * add comments * fix comment * comments * comments * PR comment * field orders * Update frame/contracts/src/tests.rs * Update frame/contracts/fixtures/call_runtime_and_call.wat Co-authored-by: Sasha Gryaznov <[email protected]> * Apply suggestions from code review Co-authored-by: Sasha Gryaznov <[email protected]> * Apply suggestions from code review Co-authored-by: Sasha Gryaznov <[email protected]> * Update frame/contracts/src/tests.rs Co-authored-by: Sasha Gryaznov <[email protected]> * Validate fees of failed call * Update frame/contracts/src/tests.rs * Update frame/contracts/src/tests.rs * Update frame/contracts/src/tests.rs * bubble up refund error * rename fixture file --------- Co-authored-by: Sasha Gryaznov <[email protected]> Co-authored-by: parity-processbot <>

pgherveou requested a review from athei as a code owner April 24, 2023 14:12

wip

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pgherveou force-pushed the pg/storage_deposit_runtime branch from 62fc1e3 to 909cbae Compare April 24, 2023 14:40

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PR comment

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field orders

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pgherveou commented Apr 25, 2023

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Update frame/contracts/fixtures/call_runtime_and_call.wat

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Co-authored-by: Sasha Gryaznov <[email protected]>

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Co-authored-by: Sasha Gryaznov <[email protected]>

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Co-authored-by: Sasha Gryaznov <[email protected]>

Update frame/contracts/src/tests.rs

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Co-authored-by: Sasha Gryaznov <[email protected]>

Validate fees of failed call

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Merge branch 'master' into pg/storage_deposit_runtime

ec43399

pgherveou requested a review from agryaznov April 26, 2023 08:22

pgherveou commented Apr 26, 2023

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…runtime

pgherveou commented Apr 27, 2023

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pgherveou added 4 commits April 27, 2023 11:38

Update frame/contracts/src/tests.rs

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bubble up refund error

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rename fixture file

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athei approved these changes Apr 28, 2023

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paritytech-processbot bot merged commit bc8f2db into master Apr 29, 2023

paritytech-processbot bot deleted the pg/storage_deposit_runtime branch April 29, 2023 16:07

jakoblell added D1-audited 👍 PR contains changes to fund-managing logic that has been properly reviewed and externally audited and removed D5-nicetohaveaudit ⚠️ PR contains trivial changes to logic that should be properly reviewed. labels May 2, 2023

kiltbot mentioned this pull request Jun 21, 2023

1️⃣ [AUTOMATIC] Update Polkadot dependencies from 0.9.42 to 0.9.43 KILTprotocol/kilt-node#531

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Polkadot v0.9.43 liberland/liberland_substrate#295

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Upgrade to Polkadot v0.9.43 Phala-Network/phala-blockchain#1313

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Contracts: runtime_call and storage_deposit #13990

Contracts: runtime_call and storage_deposit #13990

pgherveou commented Apr 24, 2023 •

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agryaznov Apr 28, 2023 •

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pgherveou commented Apr 29, 2023

	fn pre_dispatch(
	self,
	who: &Self::AccountId,
	call: &Self::Call,
	info: &DispatchInfoOf<Self::Call>,
	len: usize,
	) -> Result<Self::Pre, TransactionValidityError> {
	let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;
	Ok((self.0, who.clone(), imbalance))
	}

	fn post_dispatch(
	maybe_pre: Option<Self::Pre>,
	info: &DispatchInfoOf<Self::Call>,
	post_info: &PostDispatchInfoOf<Self::Call>,
	len: usize,
	_result: &DispatchResult,
	) -> Result<(), TransactionValidityError> {
	if let Some((tip, who, imbalance)) = maybe_pre {
	let actual_fee = Pallet::<T>::compute_actual_fee(len as u32, info, post_info, tip);
	T::OnChargeTransaction::correct_and_deposit_fee(
	&who, info, post_info, actual_fee, tip, imbalance,
	)?;
	Pallet::<T>::deposit_event(Event::<T>::TransactionFeePaid { who, actual_fee, tip });
	}
	Ok(())
	}

Contracts: runtime_call and storage_deposit #13990

Contracts: runtime_call and storage_deposit #13990

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