From d893cde2cfd1992a3e589614ae09088d92f28a59 Mon Sep 17 00:00:00 2001 From: Ron Date: Fri, 26 Apr 2024 23:51:58 +0800 Subject: [PATCH] Snowbridge: deposit extra fee to beneficiary on Asset Hub (#4175) Just the upper-stream for https://github.com/Snowfork/polkadot-sdk/pull/137 and more context there. --------- Co-authored-by: Clara van Staden Co-authored-by: Adrian Catangiu --- .../primitives/router/src/inbound/mod.rs | 6 +- .../bridge-hub-rococo/src/tests/snowbridge.rs | 133 +++++++++++++++++- prdoc/pr_4175.prdoc | 13 ++ 3 files changed, 149 insertions(+), 3 deletions(-) create mode 100644 prdoc/pr_4175.prdoc diff --git a/bridges/snowbridge/primitives/router/src/inbound/mod.rs b/bridges/snowbridge/primitives/router/src/inbound/mod.rs index c20554c6d184..54e47a7a8b6a 100644 --- a/bridges/snowbridge/primitives/router/src/inbound/mod.rs +++ b/bridges/snowbridge/primitives/router/src/inbound/mod.rs @@ -273,8 +273,10 @@ where }, None => { instructions.extend(vec![ - // Deposit asset to beneficiary. - DepositAsset { assets: Definite(asset.into()), beneficiary }, + // Deposit both asset and fees to beneficiary so the fees will not get + // trapped. Another benefit is when fees left more than ED on AssetHub could be + // used to create the beneficiary account in case it does not exist. + DepositAsset { assets: Wild(AllCounted(2)), beneficiary }, ]); }, } diff --git a/cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo/src/tests/snowbridge.rs b/cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo/src/tests/snowbridge.rs index d0c02e611349..1c1c51404aa4 100644 --- a/cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo/src/tests/snowbridge.rs +++ b/cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo/src/tests/snowbridge.rs @@ -27,7 +27,7 @@ use snowbridge_pallet_inbound_queue_fixtures::{ }; use snowbridge_pallet_system; use snowbridge_router_primitives::inbound::{ - Command, GlobalConsensusEthereumConvertsFor, MessageV1, VersionedMessage, + Command, Destination, GlobalConsensusEthereumConvertsFor, MessageV1, VersionedMessage, }; use sp_core::H256; use sp_runtime::{DispatchError::Token, TokenError::FundsUnavailable}; @@ -40,6 +40,7 @@ const TREASURY_ACCOUNT: [u8; 32] = const WETH: [u8; 20] = hex!("87d1f7fdfEe7f651FaBc8bFCB6E086C278b77A7d"); const ETHEREUM_DESTINATION_ADDRESS: [u8; 20] = hex!("44a57ee2f2FCcb85FDa2B0B18EBD0D8D2333700e"); const INSUFFICIENT_XCM_FEE: u128 = 1000; +const XCM_FEE: u128 = 4_000_000_000; #[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, TypeInfo)] pub enum ControlCall { @@ -555,3 +556,133 @@ fn register_weth_token_in_asset_hub_fail_for_insufficient_fee() { ); }); } + +fn send_token_from_ethereum_to_asset_hub_with_fee(account_id: [u8; 32], fee: u128) { + let weth_asset_location: Location = Location::new( + 2, + [EthereumNetwork::get().into(), AccountKey20 { network: None, key: WETH }], + ); + // (Parent, Parent, EthereumNetwork::get(), AccountKey20 { network: None, key: WETH }) + // Fund asset hub sovereign on bridge hub + let asset_hub_sovereign = BridgeHubRococo::sovereign_account_id_of(Location::new( + 1, + [Parachain(AssetHubRococo::para_id().into())], + )); + BridgeHubRococo::fund_accounts(vec![(asset_hub_sovereign.clone(), INITIAL_FUND)]); + + // Register WETH + AssetHubRococo::execute_with(|| { + type RuntimeOrigin = ::RuntimeOrigin; + + assert_ok!(::ForeignAssets::force_create( + RuntimeOrigin::root(), + weth_asset_location.clone().try_into().unwrap(), + asset_hub_sovereign.into(), + false, + 1, + )); + + assert!(::ForeignAssets::asset_exists( + weth_asset_location.clone().try_into().unwrap(), + )); + }); + + // Send WETH to an existent account on asset hub + BridgeHubRococo::execute_with(|| { + type RuntimeEvent = ::RuntimeEvent; + + type EthereumInboundQueue = + ::EthereumInboundQueue; + let message_id: H256 = [0; 32].into(); + let message = VersionedMessage::V1(MessageV1 { + chain_id: CHAIN_ID, + command: Command::SendToken { + token: WETH.into(), + destination: Destination::AccountId32 { id: account_id }, + amount: 1_000_000, + fee, + }, + }); + let (xcm, _) = EthereumInboundQueue::do_convert(message_id, message).unwrap(); + assert_ok!(EthereumInboundQueue::send_xcm(xcm, AssetHubRococo::para_id().into())); + + // Check that the message was sent + assert_expected_events!( + BridgeHubRococo, + vec![ + RuntimeEvent::XcmpQueue(cumulus_pallet_xcmp_queue::Event::XcmpMessageSent { .. }) => {}, + ] + ); + }); +} + +#[test] +fn send_token_from_ethereum_to_existent_account_on_asset_hub() { + send_token_from_ethereum_to_asset_hub_with_fee(AssetHubRococoSender::get().into(), XCM_FEE); + + AssetHubRococo::execute_with(|| { + type RuntimeEvent = ::RuntimeEvent; + + // Check that the token was received and issued as a foreign asset on AssetHub + assert_expected_events!( + AssetHubRococo, + vec![ + RuntimeEvent::ForeignAssets(pallet_assets::Event::Issued { .. }) => {}, + ] + ); + }); +} + +#[test] +fn send_token_from_ethereum_to_non_existent_account_on_asset_hub() { + send_token_from_ethereum_to_asset_hub_with_fee([1; 32], XCM_FEE); + + AssetHubRococo::execute_with(|| { + type RuntimeEvent = ::RuntimeEvent; + + // Check that the token was received and issued as a foreign asset on AssetHub + assert_expected_events!( + AssetHubRococo, + vec![ + RuntimeEvent::ForeignAssets(pallet_assets::Event::Issued { .. }) => {}, + ] + ); + }); +} + +#[test] +fn send_token_from_ethereum_to_non_existent_account_on_asset_hub_with_insufficient_fee() { + send_token_from_ethereum_to_asset_hub_with_fee([1; 32], INSUFFICIENT_XCM_FEE); + + AssetHubRococo::execute_with(|| { + type RuntimeEvent = ::RuntimeEvent; + + // Check that the message was not processed successfully due to insufficient fee + + assert_expected_events!( + AssetHubRococo, + vec![ + RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success:false, .. }) => {}, + ] + ); + }); +} + +#[test] +fn send_token_from_ethereum_to_non_existent_account_on_asset_hub_with_sufficient_fee_but_do_not_satisfy_ed( +) { + // On AH the xcm fee is 33_873_024 and the ED is 3_300_000 + send_token_from_ethereum_to_asset_hub_with_fee([1; 32], 36_000_000); + + AssetHubRococo::execute_with(|| { + type RuntimeEvent = ::RuntimeEvent; + + // Check that the message was not processed successfully due to insufficient ED + assert_expected_events!( + AssetHubRococo, + vec![ + RuntimeEvent::MessageQueue(pallet_message_queue::Event::Processed { success:false, .. }) => {}, + ] + ); + }); +} diff --git a/prdoc/pr_4175.prdoc b/prdoc/pr_4175.prdoc new file mode 100644 index 000000000000..7fc2fb68b38e --- /dev/null +++ b/prdoc/pr_4175.prdoc @@ -0,0 +1,13 @@ +# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0 +# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json + +title: "Snowbridge: deposit extra fee to beneficiary on Asset Hub" + +doc: + - audience: Runtime Dev + description: | + Snowbridge transfers arriving on Asset Hub will deposit both asset and fees to beneficiary so the fees will not get trapped. + Another benefit is when fees left more than ED, could be used to create the beneficiary account in case it does not exist on asset hub. + +crates: + - name: snowbridge-router-primitives