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Reward relayer on BH for S->E transfer #162
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yrong
commented
Jul 23, 2024
Comment on lines
409
to
+413
| pub(crate) fn calculate_fee( | ||
| gas_used_at_most: u64, | ||
| params: PricingParameters<T::Balance>, | ||
| _gas_used_at_most: u64, | ||
| _params: PricingParameters<T::Balance>, | ||
| ) -> Fee<T::Balance> { | ||
| // Remote fee in ether | ||
| let fee = Self::calculate_remote_fee( | ||
| gas_used_at_most, | ||
| params.fee_per_gas, | ||
| params.rewards.remote, | ||
| ); | ||
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| // downcast to u128 | ||
| let fee: u128 = fee.try_into().defensive_unwrap_or(u128::MAX); | ||
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| // multiply by multiplier and convert to local currency | ||
| let fee = FixedU128::from_inner(fee) | ||
| .saturating_mul(params.multiplier) | ||
| .checked_div(¶ms.exchange_rate) | ||
| .expect("exchange rate is not zero; qed") | ||
| .into_inner(); | ||
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| // adjust fixed point to match local currency | ||
| let fee = Self::convert_from_ether_decimals(fee); | ||
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| Fee::from((Self::calculate_local_fee(), fee)) | ||
| } | ||
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| /// Calculate fee in remote currency for dispatching a message on Ethereum | ||
| pub(crate) fn calculate_remote_fee( | ||
| gas_used_at_most: u64, | ||
| fee_per_gas: U256, | ||
| reward: U256, | ||
| ) -> U256 { | ||
| fee_per_gas.saturating_mul(gas_used_at_most.into()).saturating_add(reward) | ||
| Fee::from((Self::calculate_local_fee(), T::Balance::zero())) |
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Will remove price params on chain and the remote portion of the fee.
yrong
commented
Jul 24, 2024
Comment on lines
+440
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| T::Token::mint_into(&Self::account_id(), fee_amount)?; | ||
| } |
There was a problem hiding this comment.
Mint the fee(in DOT) to pallet account of OutboundQueue.
yrong
commented
Jul 24, 2024
Comment on lines
+263
to
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| /// Fee locked by message hash | ||
| #[pallet::storage] | ||
| pub type LockedFee<T: Config> = StorageMap<_, Twox64Concat, H256, u128, ValueQuery>; | ||
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There was a problem hiding this comment.
The storage map with Fee(in DOT) locked by MessageId.
yrong
commented
Jul 24, 2024
Comment on lines
+307
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| pub fn add_fees( | ||
| origin: OriginFor<T>, | ||
| message_id: H256, | ||
| fee_amount: BalanceOf<T>, | ||
| ) -> DispatchResult { | ||
| let who = ensure_signed(origin)?; | ||
| Self::lock_fee(message_id, fee_amount, Some(who))?; | ||
| Ok(()) | ||
| } |
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Essentially just a transfer from the sender origin to the pallet account.
yrong
changed the title
yrong
changed the title
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