Adds Snowbridge to Rococo runtime (#2522)

# Description

Adds Snowbridge to the Rococo bridge hub runtime. Includes config
changes required in Rococo asset hub.

---------

Co-authored-by: Alistair Singh <alistair.singh7@gmail.com>
Co-authored-by: ron <yrong1997@gmail.com>
Co-authored-by: Vincent Geddes <vincent.geddes@hey.com>
Co-authored-by: claravanstaden <Cats 4 life!>

bridges/snowbridge/parachain/pallets/system/src/api.rs

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! Helpers for implementing runtime api
+
+use snowbridge_core::AgentId;
+use xcm::{prelude::*, VersionedMultiLocation};
+
+use crate::{agent_id_of, Config};
+
+pub fn agent_id<Runtime>(location: VersionedMultiLocation) -> Option<AgentId>
+where
+	Runtime: Config,
+{
+	let location: MultiLocation = location.try_into().ok()?;
+	agent_id_of::<Runtime>(&location).ok()
+}

bridges/snowbridge/parachain/pallets/system/src/benchmarking.rs

@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! Benchmarking setup for pallet-template
+use super::*;
+
+#[allow(unused)]
+use crate::Pallet as SnowbridgeControl;
+use frame_benchmarking::v2::*;
+use frame_system::RawOrigin;
+use snowbridge_core::{eth, outbound::OperatingMode};
+use sp_runtime::SaturatedConversion;
+use xcm::prelude::*;
+
+#[allow(clippy::result_large_err)]
+fn fund_sovereign_account<T: Config>(para_id: ParaId) -> Result<(), BenchmarkError> {
+	let amount: BalanceOf<T> = (10_000_000_000_000_u64).saturated_into::<u128>().saturated_into();
+	let sovereign_account = sibling_sovereign_account::<T>(para_id);
+	T::Token::mint_into(&sovereign_account, amount)?;
+	Ok(())
+}
+
+#[benchmarks]
+mod benchmarks {
+	use super::*;
+
+	#[benchmark]
+	fn upgrade() -> Result<(), BenchmarkError> {
+		let impl_address = H160::repeat_byte(1);
+		let impl_code_hash = H256::repeat_byte(1);
+
+		// Assume 256 bytes passed to initializer
+		let params: Vec<u8> = (0..256).map(|_| 1u8).collect();
+
+		#[extrinsic_call]
+		_(
+			RawOrigin::Root,
+			impl_address,
+			impl_code_hash,
+			Some(Initializer { params, maximum_required_gas: 100000 }),
+		);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn set_operating_mode() -> Result<(), BenchmarkError> {
+		#[extrinsic_call]
+		_(RawOrigin::Root, OperatingMode::RejectingOutboundMessages);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn set_pricing_parameters() -> Result<(), BenchmarkError> {
+		let params = T::DefaultPricingParameters::get();
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, params);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn create_agent() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+
+		#[extrinsic_call]
+		_(origin as T::RuntimeOrigin);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn create_channel() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+
+		SnowbridgeControl::<T>::create_agent(origin.clone())?;
+
+		#[extrinsic_call]
+		_(origin as T::RuntimeOrigin, OperatingMode::Normal);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn update_channel() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+		SnowbridgeControl::<T>::create_agent(origin.clone())?;
+		SnowbridgeControl::<T>::create_channel(origin.clone(), OperatingMode::Normal)?;
+
+		#[extrinsic_call]
+		_(origin as T::RuntimeOrigin, OperatingMode::RejectingOutboundMessages);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn force_update_channel() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		let channel_id: ChannelId = ParaId::from(origin_para_id).into();
+
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+		SnowbridgeControl::<T>::create_agent(origin.clone())?;
+		SnowbridgeControl::<T>::create_channel(origin.clone(), OperatingMode::Normal)?;
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, channel_id, OperatingMode::RejectingOutboundMessages);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn transfer_native_from_agent() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+		SnowbridgeControl::<T>::create_agent(origin.clone())?;
+		SnowbridgeControl::<T>::create_channel(origin.clone(), OperatingMode::Normal)?;
+
+		#[extrinsic_call]
+		_(origin as T::RuntimeOrigin, H160::default(), 1);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn force_transfer_native_from_agent() -> Result<(), BenchmarkError> {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let origin = T::Helper::make_xcm_origin(origin_location);
+		fund_sovereign_account::<T>(origin_para_id.into())?;
+		SnowbridgeControl::<T>::create_agent(origin.clone())?;
+
+		let versioned_location: VersionedMultiLocation = origin_location.into();
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, Box::new(versioned_location), H160::default(), 1);
+
+		Ok(())
+	}
+
+	#[benchmark]
+	fn set_token_transfer_fees() -> Result<(), BenchmarkError> {
+		#[extrinsic_call]
+		_(RawOrigin::Root, 1, 1, eth(1));
+
+		Ok(())
+	}
+
+	impl_benchmark_test_suite!(
+		SnowbridgeControl,
+		crate::mock::new_test_ext(true),
+		crate::mock::Test
+	);
+}

bridges/snowbridge/parachain/pallets/system/src/lib.rs

@@ -0,0 +1,681 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! Governance API for controlling the Ethereum side of the bridge
+//!
+//! # Extrinsics
+//!
+//! ## Agents
+//!
+//! Agents are smart contracts on Ethereum that act as proxies for consensus systems on Polkadot
+//! networks.
+//!
+//! * [`Call::create_agent`]: Create agent for a sibling parachain
+//! * [`Call::transfer_native_from_agent`]: Withdraw ether from an agent
+//!
+//! The `create_agent` extrinsic should be called via an XCM `Transact` instruction from the sibling
+//! parachain.
+//!
+//! ## Channels
+//!
+//! Each sibling parachain has its own dedicated messaging channel for sending and receiving
+//! messages. As a prerequisite to creating a channel, the sibling should have already created
+//! an agent using the `create_agent` extrinsic.
+//!
+//! * [`Call::create_channel`]: Create channel for a sibling
+//! * [`Call::update_channel`]: Update a channel for a sibling
+//!
+//! ## Governance
+//!
+//! Only Polkadot governance itself can call these extrinsics. Delivery fees are waived.
+//!
+//! * [`Call::upgrade`]`: Upgrade the gateway contract
+//! * [`Call::set_operating_mode`]: Update the operating mode of the gateway contract
+//! * [`Call::force_update_channel`]: Allow root to update a channel for a sibling
+//! * [`Call::force_transfer_native_from_agent`]: Allow root to withdraw ether from an agent
+//!
+//! Typically, Polkadot governance will use the `force_transfer_native_from_agent` and
+//! `force_update_channel` and extrinsics to manage agents and channels for system parachains.
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub use pallet::*;
+
+#[cfg(test)]
+mod mock;
+
+#[cfg(test)]
+mod tests;
+
+#[cfg(feature = "runtime-benchmarks")]
+mod benchmarking;
+pub mod migration;
+
+pub mod api;
+pub mod weights;
+pub use weights::*;
+
+use frame_support::{
+	pallet_prelude::*,
+	traits::{
+		fungible::{Inspect, Mutate},
+		tokens::Preservation,
+		Contains, EnsureOrigin,
+	},
+};
+use frame_system::pallet_prelude::*;
+use snowbridge_core::{
+	meth,
+	outbound::{Command, Initializer, Message, OperatingMode, SendError, SendMessage},
+	sibling_sovereign_account, AgentId, Channel, ChannelId, ParaId,
+	PricingParameters as PricingParametersRecord, PRIMARY_GOVERNANCE_CHANNEL,
+	SECONDARY_GOVERNANCE_CHANNEL,
+};
+use sp_core::{RuntimeDebug, H160, H256};
+use sp_io::hashing::blake2_256;
+use sp_runtime::{traits::BadOrigin, DispatchError, SaturatedConversion};
+use sp_std::prelude::*;
+use xcm::prelude::*;
+use xcm_executor::traits::ConvertLocation;
+
+#[cfg(feature = "runtime-benchmarks")]
+use frame_support::traits::OriginTrait;
+
+pub use pallet::*;
+
+pub type BalanceOf<T> =
+	<<T as pallet::Config>::Token as Inspect<<T as frame_system::Config>::AccountId>>::Balance;
+pub type AccountIdOf<T> = <T as frame_system::Config>::AccountId;
+pub type PricingParametersOf<T> = PricingParametersRecord<BalanceOf<T>>;
+
+/// Ensure origin location is a sibling
+fn ensure_sibling<T>(location: &MultiLocation) -> Result<(ParaId, H256), DispatchError>
+where
+	T: Config,
+{
+	match location {
+		MultiLocation { parents: 1, interior: X1(Parachain(para_id)) } => {
+			let agent_id = agent_id_of::<T>(location)?;
+			Ok(((*para_id).into(), agent_id))
+		},
+		_ => Err(BadOrigin.into()),
+	}
+}
+
+/// Hash the location to produce an agent id
+fn agent_id_of<T: Config>(location: &MultiLocation) -> Result<H256, DispatchError> {
+	T::AgentIdOf::convert_location(location).ok_or(Error::<T>::LocationConversionFailed.into())
+}
+
+#[cfg(feature = "runtime-benchmarks")]
+pub trait BenchmarkHelper<O>
+where
+	O: OriginTrait,
+{
+	fn make_xcm_origin(location: MultiLocation) -> O;
+}
+
+/// Whether a fee should be withdrawn to an account for sending an outbound message
+#[derive(Clone, PartialEq, RuntimeDebug)]
+pub enum PaysFee<T>
+where
+	T: Config,
+{
+	/// Fully charge includes (local + remote fee)
+	Yes(AccountIdOf<T>),
+	/// Partially charge includes local fee only
+	Partial(AccountIdOf<T>),
+	/// No charge
+	No,
+}
+
+#[frame_support::pallet]
+pub mod pallet {
+	use snowbridge_core::StaticLookup;
+	use sp_core::U256;
+
+	use super::*;
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+
+	#[pallet::config]
+	pub trait Config: frame_system::Config {
+		type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
+
+		/// Send messages to Ethereum
+		type OutboundQueue: SendMessage<Balance = BalanceOf<Self>>;
+
+		/// Origin check for XCM locations that can create agents
+		type SiblingOrigin: EnsureOrigin<Self::RuntimeOrigin, Success = MultiLocation>;
+
+		/// Converts MultiLocation to AgentId
+		type AgentIdOf: ConvertLocation<AgentId>;
+
+		/// Token reserved for control operations
+		type Token: Mutate<Self::AccountId>;
+
+		/// TreasuryAccount to collect fees
+		#[pallet::constant]
+		type TreasuryAccount: Get<Self::AccountId>;
+
+		/// Number of decimal places of local currency
+		type DefaultPricingParameters: Get<PricingParametersOf<Self>>;
+
+		/// Cost of delivering a message from Ethereum
+		type InboundDeliveryCost: Get<BalanceOf<Self>>;
+
+		type WeightInfo: WeightInfo;
+
+		#[cfg(feature = "runtime-benchmarks")]
+		type Helper: BenchmarkHelper<Self::RuntimeOrigin>;
+	}
+
+	#[pallet::event]
+	#[pallet::generate_deposit(pub(super) fn deposit_event)]
+	pub enum Event<T: Config> {
+		/// An Upgrade message was sent to the Gateway
+		Upgrade {
+			impl_address: H160,
+			impl_code_hash: H256,
+			initializer_params_hash: Option<H256>,
+		},
+		/// An CreateAgent message was sent to the Gateway
+		CreateAgent {
+			location: Box<MultiLocation>,
+			agent_id: AgentId,
+		},
+		/// An CreateChannel message was sent to the Gateway
+		CreateChannel {
+			channel_id: ChannelId,
+			agent_id: AgentId,
+		},
+		/// An UpdateChannel message was sent to the Gateway
+		UpdateChannel {
+			channel_id: ChannelId,
+			mode: OperatingMode,
+		},
+		/// An SetOperatingMode message was sent to the Gateway
+		SetOperatingMode {
+			mode: OperatingMode,
+		},
+		/// An TransferNativeFromAgent message was sent to the Gateway
+		TransferNativeFromAgent {
+			agent_id: AgentId,
+			recipient: H160,
+			amount: u128,
+		},
+		/// A SetTokenTransferFees message was sent to the Gateway
+		SetTokenTransferFees {
+			create_asset_xcm: u128,
+			transfer_asset_xcm: u128,
+			register_token: U256,
+		},
+		PricingParametersChanged {
+			params: PricingParametersOf<T>,
+		},
+	}
+
+	#[pallet::error]
+	pub enum Error<T> {
+		LocationConversionFailed,
+		AgentAlreadyCreated,
+		NoAgent,
+		ChannelAlreadyCreated,
+		NoChannel,
+		UnsupportedLocationVersion,
+		InvalidLocation,
+		Send(SendError),
+		InvalidTokenTransferFees,
+		InvalidPricingParameters,
+	}
+
+	/// The set of registered agents
+	#[pallet::storage]
+	#[pallet::getter(fn agents)]
+	pub type Agents<T: Config> = StorageMap<_, Twox64Concat, AgentId, (), OptionQuery>;
+
+	/// The set of registered channels
+	#[pallet::storage]
+	#[pallet::getter(fn channels)]
+	pub type Channels<T: Config> = StorageMap<_, Twox64Concat, ChannelId, Channel, OptionQuery>;
+
+	#[pallet::storage]
+	#[pallet::getter(fn parameters)]
+	pub type PricingParameters<T: Config> =
+		StorageValue<_, PricingParametersOf<T>, ValueQuery, T::DefaultPricingParameters>;
+
+	#[pallet::genesis_config]
+	#[derive(frame_support::DefaultNoBound)]
+	pub struct GenesisConfig<T: Config> {
+		// Own parachain id
+		pub para_id: ParaId,
+		// AssetHub's parachain id
+		pub asset_hub_para_id: ParaId,
+		#[serde(skip)]
+		pub _config: PhantomData<T>,
+	}
+
+	#[pallet::genesis_build]
+	impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
+		fn build(&self) {
+			Pallet::<T>::initialize(self.para_id, self.asset_hub_para_id).expect("infallible; qed");
+		}
+	}
+
+	#[pallet::call]
+	impl<T: Config> Pallet<T> {
+		/// Sends command to the Gateway contract to upgrade itself with a new implementation
+		/// contract
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be `Root`.
+		/// - `impl_address`: The address of the implementation contract.
+		/// - `impl_code_hash`: The codehash of the implementation contract.
+		/// - `initializer`: Optionally call an initializer on the implementation contract.
+		#[pallet::call_index(0)]
+		#[pallet::weight((T::WeightInfo::upgrade(), DispatchClass::Operational))]
+		pub fn upgrade(
+			origin: OriginFor<T>,
+			impl_address: H160,
+			impl_code_hash: H256,
+			initializer: Option<Initializer>,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+
+			let initializer_params_hash: Option<H256> =
+				initializer.as_ref().map(|i| H256::from(blake2_256(i.params.as_ref())));
+			let command = Command::Upgrade { impl_address, impl_code_hash, initializer };
+			Self::send(PRIMARY_GOVERNANCE_CHANNEL, command, PaysFee::<T>::No)?;
+
+			Self::deposit_event(Event::<T>::Upgrade {
+				impl_address,
+				impl_code_hash,
+				initializer_params_hash,
+			});
+			Ok(())
+		}
+
+		/// Sends a message to the Gateway contract to change its operating mode
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be `MultiLocation`
+		#[pallet::call_index(1)]
+		#[pallet::weight((T::WeightInfo::set_operating_mode(), DispatchClass::Operational))]
+		pub fn set_operating_mode(origin: OriginFor<T>, mode: OperatingMode) -> DispatchResult {
+			ensure_root(origin)?;
+
+			let command = Command::SetOperatingMode { mode };
+			Self::send(PRIMARY_GOVERNANCE_CHANNEL, command, PaysFee::<T>::No)?;
+
+			Self::deposit_event(Event::<T>::SetOperatingMode { mode });
+			Ok(())
+		}
+
+		/// Set pricing parameters on both sides of the bridge
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be root
+		#[pallet::call_index(2)]
+		#[pallet::weight((T::WeightInfo::set_pricing_parameters(), DispatchClass::Operational))]
+		pub fn set_pricing_parameters(
+			origin: OriginFor<T>,
+			params: PricingParametersOf<T>,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+			params.validate().map_err(|_| Error::<T>::InvalidPricingParameters)?;
+			PricingParameters::<T>::put(params.clone());
+
+			let command = Command::SetPricingParameters {
+				exchange_rate: params.exchange_rate.into(),
+				delivery_cost: T::InboundDeliveryCost::get().saturated_into::<u128>(),
+			};
+			Self::send(PRIMARY_GOVERNANCE_CHANNEL, command, PaysFee::<T>::No)?;
+
+			Self::deposit_event(Event::PricingParametersChanged { params });
+			Ok(())
+		}
+
+		/// Sends a command to the Gateway contract to instantiate a new agent contract representing
+		/// `origin`.
+		///
+		/// Fee required: Yes
+		///
+		/// - `origin`: Must be `MultiLocation` of a sibling parachain
+		#[pallet::call_index(3)]
+		#[pallet::weight(T::WeightInfo::create_agent())]
+		pub fn create_agent(origin: OriginFor<T>) -> DispatchResult {
+			let origin_location: MultiLocation = T::SiblingOrigin::ensure_origin(origin)?;
+
+			// Ensure that origin location is some consensus system on a sibling parachain
+			let (para_id, agent_id) = ensure_sibling::<T>(&origin_location)?;
+
+			// Record the agent id or fail if it has already been created
+			ensure!(!Agents::<T>::contains_key(agent_id), Error::<T>::AgentAlreadyCreated);
+			Agents::<T>::insert(agent_id, ());
+
+			let command = Command::CreateAgent { agent_id };
+			let pays_fee = PaysFee::<T>::Yes(sibling_sovereign_account::<T>(para_id));
+			Self::send(SECONDARY_GOVERNANCE_CHANNEL, command, pays_fee)?;
+
+			Self::deposit_event(Event::<T>::CreateAgent {
+				location: Box::new(origin_location),
+				agent_id,
+			});
+			Ok(())
+		}
+
+		/// Sends a message to the Gateway contract to create a new channel representing `origin`
+		///
+		/// Fee required: Yes
+		///
+		/// This extrinsic is permissionless, so a fee is charged to prevent spamming and pay
+		/// for execution costs on the remote side.
+		///
+		/// The message is sent over the bridge on BridgeHub's own channel to the Gateway.
+		///
+		/// - `origin`: Must be `MultiLocation`
+		/// - `mode`: Initial operating mode of the channel
+		#[pallet::call_index(4)]
+		#[pallet::weight(T::WeightInfo::create_channel())]
+		pub fn create_channel(origin: OriginFor<T>, mode: OperatingMode) -> DispatchResult {
+			let origin_location: MultiLocation = T::SiblingOrigin::ensure_origin(origin)?;
+
+			// Ensure that origin location is a sibling parachain
+			let (para_id, agent_id) = ensure_sibling::<T>(&origin_location)?;
+
+			let channel_id: ChannelId = para_id.into();
+
+			ensure!(Agents::<T>::contains_key(agent_id), Error::<T>::NoAgent);
+			ensure!(!Channels::<T>::contains_key(channel_id), Error::<T>::ChannelAlreadyCreated);
+
+			let channel = Channel { agent_id, para_id };
+			Channels::<T>::insert(channel_id, channel);
+
+			let command = Command::CreateChannel { channel_id, agent_id, mode };
+			let pays_fee = PaysFee::<T>::Yes(sibling_sovereign_account::<T>(para_id));
+			Self::send(SECONDARY_GOVERNANCE_CHANNEL, command, pays_fee)?;
+
+			Self::deposit_event(Event::<T>::CreateChannel { channel_id, agent_id });
+			Ok(())
+		}
+
+		/// Sends a message to the Gateway contract to update a channel configuration
+		///
+		/// The origin must already have a channel initialized, as this message is sent over it.
+		///
+		/// A partial fee will be charged for local processing only.
+		///
+		/// - `origin`: Must be `MultiLocation`
+		/// - `mode`: Initial operating mode of the channel
+		#[pallet::call_index(5)]
+		#[pallet::weight(T::WeightInfo::update_channel())]
+		pub fn update_channel(origin: OriginFor<T>, mode: OperatingMode) -> DispatchResult {
+			let origin_location: MultiLocation = T::SiblingOrigin::ensure_origin(origin)?;
+
+			// Ensure that origin location is a sibling parachain
+			let (para_id, _) = ensure_sibling::<T>(&origin_location)?;
+
+			let channel_id: ChannelId = para_id.into();
+
+			ensure!(Channels::<T>::contains_key(channel_id), Error::<T>::NoChannel);
+
+			let command = Command::UpdateChannel { channel_id, mode };
+			let pays_fee = PaysFee::<T>::Partial(sibling_sovereign_account::<T>(para_id));
+
+			// Parachains send the update message on their own channel
+			Self::send(channel_id, command, pays_fee)?;
+
+			Self::deposit_event(Event::<T>::UpdateChannel { channel_id, mode });
+			Ok(())
+		}
+
+		/// Sends a message to the Gateway contract to update an arbitrary channel
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be root
+		/// - `channel_id`: ID of channel
+		/// - `mode`: Initial operating mode of the channel
+		/// - `outbound_fee`: Fee charged to users for sending outbound messages to Polkadot
+		#[pallet::call_index(6)]
+		#[pallet::weight(T::WeightInfo::force_update_channel())]
+		pub fn force_update_channel(
+			origin: OriginFor<T>,
+			channel_id: ChannelId,
+			mode: OperatingMode,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+
+			ensure!(Channels::<T>::contains_key(channel_id), Error::<T>::NoChannel);
+
+			let command = Command::UpdateChannel { channel_id, mode };
+			Self::send(PRIMARY_GOVERNANCE_CHANNEL, command, PaysFee::<T>::No)?;
+
+			Self::deposit_event(Event::<T>::UpdateChannel { channel_id, mode });
+			Ok(())
+		}
+
+		/// Sends a message to the Gateway contract to transfer ether from an agent to `recipient`.
+		///
+		/// A partial fee will be charged for local processing only.
+		///
+		/// - `origin`: Must be `MultiLocation`
+		#[pallet::call_index(7)]
+		#[pallet::weight(T::WeightInfo::transfer_native_from_agent())]
+		pub fn transfer_native_from_agent(
+			origin: OriginFor<T>,
+			recipient: H160,
+			amount: u128,
+		) -> DispatchResult {
+			let origin_location: MultiLocation = T::SiblingOrigin::ensure_origin(origin)?;
+
+			// Ensure that origin location is some consensus system on a sibling parachain
+			let (para_id, agent_id) = ensure_sibling::<T>(&origin_location)?;
+
+			// Since the origin is also the owner of the channel, they only need to pay
+			// the local processing fee.
+			let pays_fee = PaysFee::<T>::Partial(sibling_sovereign_account::<T>(para_id));
+
+			Self::do_transfer_native_from_agent(
+				agent_id,
+				para_id.into(),
+				recipient,
+				amount,
+				pays_fee,
+			)
+		}
+
+		/// Sends a message to the Gateway contract to transfer ether from an agent to `recipient`.
+		///
+		/// Privileged. Can only be called by root.
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be root
+		/// - `location`: Location used to resolve the agent
+		/// - `recipient`: Recipient of funds
+		/// - `amount`: Amount to transfer
+		#[pallet::call_index(8)]
+		#[pallet::weight(T::WeightInfo::force_transfer_native_from_agent())]
+		pub fn force_transfer_native_from_agent(
+			origin: OriginFor<T>,
+			location: Box<VersionedMultiLocation>,
+			recipient: H160,
+			amount: u128,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+
+			// Ensure that location is some consensus system on a sibling parachain
+			let location: MultiLocation =
+				(*location).try_into().map_err(|_| Error::<T>::UnsupportedLocationVersion)?;
+			let (_, agent_id) =
+				ensure_sibling::<T>(&location).map_err(|_| Error::<T>::InvalidLocation)?;
+
+			let pays_fee = PaysFee::<T>::No;
+
+			Self::do_transfer_native_from_agent(
+				agent_id,
+				PRIMARY_GOVERNANCE_CHANNEL,
+				recipient,
+				amount,
+				pays_fee,
+			)
+		}
+
+		/// Sends a message to the Gateway contract to update fee related parameters for
+		/// token transfers.
+		///
+		/// Privileged. Can only be called by root.
+		///
+		/// Fee required: No
+		///
+		/// - `origin`: Must be root
+		/// - `create_asset_xcm`: The XCM execution cost for creating a new asset class on AssetHub,
+		///   in DOT
+		/// - `transfer_asset_xcm`: The XCM execution cost for performing a reserve transfer on
+		///   AssetHub, in DOT
+		/// - `register_token`: The Ether fee for registering a new token, to discourage spamming
+		#[pallet::call_index(9)]
+		#[pallet::weight((T::WeightInfo::set_token_transfer_fees(), DispatchClass::Operational))]
+		pub fn set_token_transfer_fees(
+			origin: OriginFor<T>,
+			create_asset_xcm: u128,
+			transfer_asset_xcm: u128,
+			register_token: U256,
+		) -> DispatchResult {
+			ensure_root(origin)?;
+
+			// Basic validation of new costs. Particularly for token registration, we want to ensure
+			// its relatively expensive to discourage spamming. Like at least 100 USD.
+			ensure!(
+				create_asset_xcm > 0 && transfer_asset_xcm > 0 && register_token > meth(100),
+				Error::<T>::InvalidTokenTransferFees
+			);
+
+			let command = Command::SetTokenTransferFees {
+				create_asset_xcm,
+				transfer_asset_xcm,
+				register_token,
+			};
+			Self::send(PRIMARY_GOVERNANCE_CHANNEL, command, PaysFee::<T>::No)?;
+
+			Self::deposit_event(Event::<T>::SetTokenTransferFees {
+				create_asset_xcm,
+				transfer_asset_xcm,
+				register_token,
+			});
+			Ok(())
+		}
+	}
+
+	impl<T: Config> Pallet<T> {
+		/// Send `command` to the Gateway on the Channel identified by `channel_id`
+		fn send(channel_id: ChannelId, command: Command, pays_fee: PaysFee<T>) -> DispatchResult {
+			let message = Message { id: None, channel_id, command };
+			let (ticket, fee) =
+				T::OutboundQueue::validate(&message).map_err(|err| Error::<T>::Send(err))?;
+
+			let payment = match pays_fee {
+				PaysFee::Yes(account) => Some((account, fee.total())),
+				PaysFee::Partial(account) => Some((account, fee.local)),
+				PaysFee::No => None,
+			};
+
+			if let Some((payer, fee)) = payment {
+				T::Token::transfer(
+					&payer,
+					&T::TreasuryAccount::get(),
+					fee,
+					Preservation::Preserve,
+				)?;
+			}
+
+			T::OutboundQueue::deliver(ticket).map_err(|err| Error::<T>::Send(err))?;
+			Ok(())
+		}
+
+		/// Issue a `Command::TransferNativeFromAgent` command. The command will be sent on the
+		/// channel `channel_id`
+		pub fn do_transfer_native_from_agent(
+			agent_id: H256,
+			channel_id: ChannelId,
+			recipient: H160,
+			amount: u128,
+			pays_fee: PaysFee<T>,
+		) -> DispatchResult {
+			ensure!(Agents::<T>::contains_key(agent_id), Error::<T>::NoAgent);
+
+			let command = Command::TransferNativeFromAgent { agent_id, recipient, amount };
+			Self::send(channel_id, command, pays_fee)?;
+
+			Self::deposit_event(Event::<T>::TransferNativeFromAgent {
+				agent_id,
+				recipient,
+				amount,
+			});
+			Ok(())
+		}
+
+		/// Initializes agents and channels.
+		pub fn initialize(para_id: ParaId, asset_hub_para_id: ParaId) -> Result<(), DispatchError> {
+			// Asset Hub
+			let asset_hub_location: MultiLocation =
+				ParentThen(X1(Parachain(asset_hub_para_id.into()))).into();
+			let asset_hub_agent_id = agent_id_of::<T>(&asset_hub_location)?;
+			let asset_hub_channel_id: ChannelId = asset_hub_para_id.into();
+			Agents::<T>::insert(asset_hub_agent_id, ());
+			Channels::<T>::insert(
+				asset_hub_channel_id,
+				Channel { agent_id: asset_hub_agent_id, para_id: asset_hub_para_id },
+			);
+
+			// Governance channels
+			let bridge_hub_agent_id = agent_id_of::<T>(&MultiLocation::here())?;
+			// Agent for BridgeHub
+			Agents::<T>::insert(bridge_hub_agent_id, ());
+
+			// Primary governance channel
+			Channels::<T>::insert(
+				PRIMARY_GOVERNANCE_CHANNEL,
+				Channel { agent_id: bridge_hub_agent_id, para_id },
+			);
+
+			// Secondary governance channel
+			Channels::<T>::insert(
+				SECONDARY_GOVERNANCE_CHANNEL,
+				Channel { agent_id: bridge_hub_agent_id, para_id },
+			);
+
+			Ok(())
+		}
+
+		/// Checks if the pallet has been initialized.
+		pub(crate) fn is_initialized() -> bool {
+			let primary_exists = Channels::<T>::contains_key(PRIMARY_GOVERNANCE_CHANNEL);
+			let secondary_exists = Channels::<T>::contains_key(SECONDARY_GOVERNANCE_CHANNEL);
+			primary_exists && secondary_exists
+		}
+	}
+
+	impl<T: Config> StaticLookup for Pallet<T> {
+		type Source = ChannelId;
+		type Target = Channel;
+		fn lookup(channel_id: Self::Source) -> Option<Self::Target> {
+			Channels::<T>::get(channel_id)
+		}
+	}
+
+	impl<T: Config> Contains<ChannelId> for Pallet<T> {
+		fn contains(channel_id: &ChannelId) -> bool {
+			Channels::<T>::get(channel_id).is_some()
+		}
+	}
+
+	impl<T: Config> Get<PricingParametersOf<T>> for Pallet<T> {
+		fn get() -> PricingParametersOf<T> {
+			PricingParameters::<T>::get()
+		}
+	}
+}

bridges/snowbridge/parachain/pallets/system/src/migration.rs

@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! Governance API for controlling the Ethereum side of the bridge
+use super::*;
+use frame_support::traits::OnRuntimeUpgrade;
+use log;
+
+#[cfg(feature = "try-runtime")]
+use sp_runtime::TryRuntimeError;
+
+pub mod v0 {
+	use frame_support::{pallet_prelude::*, weights::Weight};
+
+	use super::*;
+
+	const LOG_TARGET: &str = "ethereum_system::migration";
+
+	pub struct InitializeOnUpgrade<T, BridgeHubParaId, AssetHubParaId>(
+		sp_std::marker::PhantomData<(T, BridgeHubParaId, AssetHubParaId)>,
+	);
+	impl<T, BridgeHubParaId, AssetHubParaId> OnRuntimeUpgrade
+		for InitializeOnUpgrade<T, BridgeHubParaId, AssetHubParaId>
+	where
+		T: Config,
+		BridgeHubParaId: Get<u32>,
+		AssetHubParaId: Get<u32>,
+	{
+		fn on_runtime_upgrade() -> Weight {
+			if !Pallet::<T>::is_initialized() {
+				Pallet::<T>::initialize(
+					BridgeHubParaId::get().into(),
+					AssetHubParaId::get().into(),
+				)
+				.expect("infallible; qed");
+				log::info!(
+					target: LOG_TARGET,
+					"Ethereum system initialized."
+				);
+				T::DbWeight::get().reads_writes(2, 5)
+			} else {
+				log::info!(
+					target: LOG_TARGET,
+					"Ethereum system already initialized. Skipping."
+				);
+				T::DbWeight::get().reads(2)
+			}
+		}
+
+		#[cfg(feature = "try-runtime")]
+		fn pre_upgrade() -> Result<Vec<u8>, TryRuntimeError> {
+			if !Pallet::<T>::is_initialized() {
+				log::info!(
+					target: LOG_TARGET,
+					"Agents and channels not initialized. Initialization will run."
+				);
+			} else {
+				log::info!(
+					target: LOG_TARGET,
+					"Agents and channels are initialized. Initialization will not run."
+				);
+			}
+			Ok(vec![])
+		}
+
+		#[cfg(feature = "try-runtime")]
+		fn post_upgrade(_: Vec<u8>) -> Result<(), TryRuntimeError> {
+			frame_support::ensure!(
+				Pallet::<T>::is_initialized(),
+				"Agents and channels were not initialized."
+			);
+			Ok(())
+		}
+	}
+}

bridges/snowbridge/parachain/pallets/system/src/mock.rs

@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+use crate as snowbridge_system;
+use frame_support::{
+	parameter_types,
+	traits::{tokens::fungible::Mutate, ConstU128, ConstU16, ConstU64, ConstU8},
+	weights::IdentityFee,
+	PalletId,
+};
+use sp_core::H256;
+use xcm_executor::traits::ConvertLocation;
+
+use snowbridge_core::{
+	gwei, meth, outbound::ConstantGasMeter, sibling_sovereign_account, AgentId, AllowSiblingsOnly,
+	ParaId, PricingParameters, Rewards,
+};
+use sp_runtime::{
+	traits::{AccountIdConversion, BlakeTwo256, IdentityLookup, Keccak256},
+	AccountId32, BuildStorage, FixedU128,
+};
+use xcm::prelude::*;
+
+#[cfg(feature = "runtime-benchmarks")]
+use crate::BenchmarkHelper;
+
+type Block = frame_system::mocking::MockBlock<Test>;
+type Balance = u128;
+
+pub type AccountId = AccountId32;
+
+// A stripped-down version of pallet-xcm that only inserts an XCM origin into the runtime
+#[allow(dead_code)]
+#[frame_support::pallet]
+mod pallet_xcm_origin {
+	use frame_support::{
+		pallet_prelude::*,
+		traits::{Contains, OriginTrait},
+	};
+	use xcm::latest::prelude::*;
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+
+	#[pallet::config]
+	pub trait Config: frame_system::Config {
+		type RuntimeOrigin: From<Origin> + From<<Self as frame_system::Config>::RuntimeOrigin>;
+	}
+
+	// Insert this custom Origin into the aggregate RuntimeOrigin
+	#[pallet::origin]
+	#[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug, TypeInfo, MaxEncodedLen)]
+	pub struct Origin(pub MultiLocation);
+
+	impl From<MultiLocation> for Origin {
+		fn from(location: MultiLocation) -> Origin {
+			Origin(location)
+		}
+	}
+
+	/// `EnsureOrigin` implementation succeeding with a `MultiLocation` value to recognize and
+	/// filter the contained location
+	pub struct EnsureXcm<F>(PhantomData<F>);
+	impl<O: OriginTrait + From<Origin>, F: Contains<MultiLocation>> EnsureOrigin<O> for EnsureXcm<F>
+	where
+		O::PalletsOrigin: From<Origin> + TryInto<Origin, Error = O::PalletsOrigin>,
+	{
+		type Success = MultiLocation;
+
+		fn try_origin(outer: O) -> Result<Self::Success, O> {
+			outer.try_with_caller(|caller| {
+				caller.try_into().and_then(|o| match o {
+					Origin(location) if F::contains(&location) => Ok(location),
+					o => Err(o.into()),
+				})
+			})
+		}
+
+		#[cfg(feature = "runtime-benchmarks")]
+		fn try_successful_origin() -> Result<O, ()> {
+			Ok(O::from(Origin(MultiLocation { parents: 1, interior: X1(Parachain(2000)) })))
+		}
+	}
+}
+
+// Configure a mock runtime to test the pallet.
+frame_support::construct_runtime!(
+	pub enum Test
+	{
+		System: frame_system,
+		Balances: pallet_balances::{Pallet, Call, Storage, Config<T>, Event<T>},
+		XcmOrigin: pallet_xcm_origin::{Pallet, Origin},
+		OutboundQueue: snowbridge_outbound_queue::{Pallet, Call, Storage, Event<T>},
+		EthereumSystem: snowbridge_system,
+		MessageQueue: pallet_message_queue::{Pallet, Call, Storage, Event<T>}
+	}
+);
+
+impl frame_system::Config for Test {
+	type BaseCallFilter = frame_support::traits::Everything;
+	type BlockWeights = ();
+	type BlockLength = ();
+	type DbWeight = ();
+	type RuntimeOrigin = RuntimeOrigin;
+	type RuntimeCall = RuntimeCall;
+	type RuntimeTask = RuntimeTask;
+	type Hash = H256;
+	type Hashing = BlakeTwo256;
+	type AccountId = AccountId;
+	type Lookup = IdentityLookup<Self::AccountId>;
+	type RuntimeEvent = RuntimeEvent;
+	type BlockHashCount = ConstU64<250>;
+	type Version = ();
+	type PalletInfo = PalletInfo;
+	type AccountData = pallet_balances::AccountData<u128>;
+	type OnNewAccount = ();
+	type OnKilledAccount = ();
+	type SystemWeightInfo = ();
+	type SS58Prefix = ConstU16<42>;
+	type OnSetCode = ();
+	type MaxConsumers = frame_support::traits::ConstU32<16>;
+	type Nonce = u64;
+	type Block = Block;
+}
+
+impl pallet_balances::Config for Test {
+	type MaxLocks = ();
+	type MaxReserves = ();
+	type ReserveIdentifier = [u8; 8];
+	type Balance = Balance;
+	type RuntimeEvent = RuntimeEvent;
+	type DustRemoval = ();
+	type ExistentialDeposit = ConstU128<1>;
+	type AccountStore = System;
+	type WeightInfo = ();
+	type FreezeIdentifier = ();
+	type MaxFreezes = ();
+	type RuntimeHoldReason = ();
+	type RuntimeFreezeReason = ();
+	type MaxHolds = ();
+}
+
+impl pallet_xcm_origin::Config for Test {
+	type RuntimeOrigin = RuntimeOrigin;
+}
+
+parameter_types! {
+	pub const HeapSize: u32 = 32 * 1024;
+	pub const MaxStale: u32 = 32;
+	pub static ServiceWeight: Option<Weight> = Some(Weight::from_parts(100, 100));
+}
+
+impl pallet_message_queue::Config for Test {
+	type RuntimeEvent = RuntimeEvent;
+	type WeightInfo = ();
+	type MessageProcessor = OutboundQueue;
+	type Size = u32;
+	type QueueChangeHandler = ();
+	type HeapSize = HeapSize;
+	type MaxStale = MaxStale;
+	type ServiceWeight = ServiceWeight;
+	type QueuePausedQuery = ();
+}
+
+parameter_types! {
+	pub const MaxMessagePayloadSize: u32 = 1024;
+	pub const MaxMessagesPerBlock: u32 = 20;
+	pub const OwnParaId: ParaId = ParaId::new(1013);
+}
+
+impl snowbridge_outbound_queue::Config for Test {
+	type RuntimeEvent = RuntimeEvent;
+	type Hashing = Keccak256;
+	type MessageQueue = MessageQueue;
+	type Decimals = ConstU8<10>;
+	type MaxMessagePayloadSize = MaxMessagePayloadSize;
+	type MaxMessagesPerBlock = MaxMessagesPerBlock;
+	type GasMeter = ConstantGasMeter;
+	type Balance = u128;
+	type PricingParameters = EthereumSystem;
+	type Channels = EthereumSystem;
+	type WeightToFee = IdentityFee<u128>;
+	type WeightInfo = ();
+}
+
+parameter_types! {
+	pub const SS58Prefix: u8 = 42;
+	pub const AnyNetwork: Option<NetworkId> = None;
+	pub const RelayNetwork: Option<NetworkId> = Some(NetworkId::Kusama);
+	pub const RelayLocation: MultiLocation = MultiLocation::parent();
+	pub UniversalLocation: InteriorMultiLocation =
+		X2(GlobalConsensus(RelayNetwork::get().unwrap()), Parachain(1013));
+}
+
+pub const DOT: u128 = 10_000_000_000;
+
+parameter_types! {
+	pub TreasuryAccount: AccountId = PalletId(*b"py/trsry").into_account_truncating();
+	pub Fee: u64 = 1000;
+	pub const RococoNetwork: NetworkId = NetworkId::Rococo;
+	pub const InitialFunding: u128 = 1_000_000_000_000;
+	pub AssetHubParaId: ParaId = ParaId::new(1000);
+	pub TestParaId: u32 = 2000;
+	pub Parameters: PricingParameters<u128> = PricingParameters {
+		exchange_rate: FixedU128::from_rational(1, 400),
+		fee_per_gas: gwei(20),
+		rewards: Rewards { local: DOT, remote: meth(1) }
+	};
+	pub const InboundDeliveryCost: u128 = 1_000_000_000;
+
+}
+
+#[cfg(feature = "runtime-benchmarks")]
+impl BenchmarkHelper<RuntimeOrigin> for () {
+	fn make_xcm_origin(location: MultiLocation) -> RuntimeOrigin {
+		RuntimeOrigin::from(pallet_xcm_origin::Origin(location))
+	}
+}
+
+impl crate::Config for Test {
+	type RuntimeEvent = RuntimeEvent;
+	type OutboundQueue = OutboundQueue;
+	type SiblingOrigin = pallet_xcm_origin::EnsureXcm<AllowSiblingsOnly>;
+	type AgentIdOf = snowbridge_core::AgentIdOf;
+	type TreasuryAccount = TreasuryAccount;
+	type Token = Balances;
+	type DefaultPricingParameters = Parameters;
+	type WeightInfo = ();
+	type InboundDeliveryCost = InboundDeliveryCost;
+	#[cfg(feature = "runtime-benchmarks")]
+	type Helper = ();
+}
+
+// Build genesis storage according to the mock runtime.
+pub fn new_test_ext(genesis_build: bool) -> sp_io::TestExternalities {
+	let mut storage = frame_system::GenesisConfig::<Test>::default().build_storage().unwrap();
+
+	if genesis_build {
+		crate::GenesisConfig::<Test> {
+			para_id: OwnParaId::get(),
+			asset_hub_para_id: AssetHubParaId::get(),
+			_config: Default::default(),
+		}
+		.assimilate_storage(&mut storage)
+		.unwrap();
+	}
+
+	let mut ext: sp_io::TestExternalities = storage.into();
+	let initial_amount = InitialFunding::get();
+	let test_para_id = TestParaId::get();
+	let sovereign_account = sibling_sovereign_account::<Test>(test_para_id.into());
+	let treasury_account = TreasuryAccount::get();
+	ext.execute_with(|| {
+		System::set_block_number(1);
+		Balances::mint_into(&AccountId32::from([0; 32]), initial_amount).unwrap();
+		Balances::mint_into(&sovereign_account, initial_amount).unwrap();
+		Balances::mint_into(&treasury_account, initial_amount).unwrap();
+	});
+	ext
+}
+
+// Test helpers
+
+pub fn make_xcm_origin(location: MultiLocation) -> RuntimeOrigin {
+	pallet_xcm_origin::Origin(location).into()
+}
+
+pub fn make_agent_id(location: MultiLocation) -> AgentId {
+	<Test as snowbridge_system::Config>::AgentIdOf::convert_location(&location)
+		.expect("convert location")
+}

bridges/snowbridge/parachain/pallets/system/src/tests.rs

@@ -0,0 +1,664 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+use crate::{mock::*, *};
+use frame_support::{assert_noop, assert_ok};
+use hex_literal::hex;
+use snowbridge_core::{eth, sibling_sovereign_account_raw};
+use sp_core::H256;
+use sp_runtime::{AccountId32, DispatchError::BadOrigin, TokenError};
+
+#[test]
+fn create_agent() {
+	new_test_ext(true).execute_with(|| {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let agent_id = make_agent_id(origin_location);
+		let sovereign_account = sibling_sovereign_account::<Test>(origin_para_id.into());
+
+		// fund sovereign account of origin
+		let _ = Balances::mint_into(&sovereign_account, 10000);
+
+		assert!(!Agents::<Test>::contains_key(agent_id));
+
+		let origin = make_xcm_origin(origin_location);
+		assert_ok!(EthereumSystem::create_agent(origin));
+
+		assert!(Agents::<Test>::contains_key(agent_id));
+	});
+}
+
+#[test]
+fn test_agent_for_here() {
+	new_test_ext(true).execute_with(|| {
+		let origin_location = MultiLocation::here();
+		let agent_id = make_agent_id(origin_location);
+		assert_eq!(
+			agent_id,
+			hex!("03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314").into(),
+		)
+	});
+}
+
+#[test]
+fn create_agent_fails_on_funds_unavailable() {
+	new_test_ext(true).execute_with(|| {
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(2000)) };
+		let origin = make_xcm_origin(origin_location);
+		// Reset balance of sovereign_account to zero so to trigger the FundsUnavailable error
+		let sovereign_account = sibling_sovereign_account::<Test>(2000.into());
+		Balances::set_balance(&sovereign_account, 0);
+		assert_noop!(EthereumSystem::create_agent(origin), TokenError::FundsUnavailable);
+	});
+}
+
+#[test]
+fn create_agent_bad_origin() {
+	new_test_ext(true).execute_with(|| {
+		// relay chain location not allowed
+		assert_noop!(
+			EthereumSystem::create_agent(make_xcm_origin(MultiLocation {
+				parents: 1,
+				interior: Here,
+			})),
+			BadOrigin,
+		);
+
+		// local account location not allowed
+		assert_noop!(
+			EthereumSystem::create_agent(make_xcm_origin(MultiLocation {
+				parents: 0,
+				interior: X1(Junction::AccountId32 { network: None, id: [67u8; 32] }),
+			})),
+			BadOrigin,
+		);
+
+		// Signed origin not allowed
+		assert_noop!(
+			EthereumSystem::create_agent(RuntimeOrigin::signed([14; 32].into())),
+			BadOrigin
+		);
+
+		// None origin not allowed
+		assert_noop!(EthereumSystem::create_agent(RuntimeOrigin::none()), BadOrigin);
+	});
+}
+
+#[test]
+fn upgrade_as_root() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let address: H160 = Default::default();
+		let code_hash: H256 = Default::default();
+
+		assert_ok!(EthereumSystem::upgrade(origin, address, code_hash, None));
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(crate::Event::Upgrade {
+			impl_address: address,
+			impl_code_hash: code_hash,
+			initializer_params_hash: None,
+		}));
+	});
+}
+
+#[test]
+fn upgrade_as_signed_fails() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::signed(AccountId32::new([0; 32]));
+		let address: H160 = Default::default();
+		let code_hash: H256 = Default::default();
+
+		assert_noop!(EthereumSystem::upgrade(origin, address, code_hash, None), BadOrigin);
+	});
+}
+
+#[test]
+fn upgrade_with_params() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let address: H160 = Default::default();
+		let code_hash: H256 = Default::default();
+		let initializer: Option<Initializer> =
+			Some(Initializer { params: [0; 256].into(), maximum_required_gas: 10000 });
+		assert_ok!(EthereumSystem::upgrade(origin, address, code_hash, initializer));
+	});
+}
+
+#[test]
+fn set_operating_mode() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let mode = OperatingMode::RejectingOutboundMessages;
+
+		assert_ok!(EthereumSystem::set_operating_mode(origin, mode));
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(crate::Event::SetOperatingMode {
+			mode,
+		}));
+	});
+}
+
+#[test]
+fn set_operating_mode_as_signed_fails() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::signed([14; 32].into());
+		let mode = OperatingMode::RejectingOutboundMessages;
+
+		assert_noop!(EthereumSystem::set_operating_mode(origin, mode), BadOrigin);
+	});
+}
+
+#[test]
+fn set_pricing_parameters() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let mut params = Parameters::get();
+		params.rewards.local = 7;
+
+		assert_ok!(EthereumSystem::set_pricing_parameters(origin, params));
+
+		assert_eq!(PricingParameters::<Test>::get().rewards.local, 7);
+	});
+}
+
+#[test]
+fn set_pricing_parameters_as_signed_fails() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::signed([14; 32].into());
+		let params = Parameters::get();
+
+		assert_noop!(EthereumSystem::set_pricing_parameters(origin, params), BadOrigin);
+	});
+}
+
+#[test]
+fn set_pricing_parameters_invalid() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let mut params = Parameters::get();
+		params.rewards.local = 0;
+
+		assert_noop!(
+			EthereumSystem::set_pricing_parameters(origin.clone(), params),
+			Error::<Test>::InvalidPricingParameters
+		);
+
+		let mut params = Parameters::get();
+		params.exchange_rate = 0u128.into();
+		assert_noop!(
+			EthereumSystem::set_pricing_parameters(origin.clone(), params),
+			Error::<Test>::InvalidPricingParameters
+		);
+		params = Parameters::get();
+		params.fee_per_gas = sp_core::U256::zero();
+		assert_noop!(
+			EthereumSystem::set_pricing_parameters(origin.clone(), params),
+			Error::<Test>::InvalidPricingParameters
+		);
+		params = Parameters::get();
+		params.rewards.local = 0;
+		assert_noop!(
+			EthereumSystem::set_pricing_parameters(origin.clone(), params),
+			Error::<Test>::InvalidPricingParameters
+		);
+		params = Parameters::get();
+		params.rewards.remote = sp_core::U256::zero();
+		assert_noop!(
+			EthereumSystem::set_pricing_parameters(origin, params),
+			Error::<Test>::InvalidPricingParameters
+		);
+	});
+}
+
+#[test]
+fn set_token_transfer_fees() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+
+		assert_ok!(EthereumSystem::set_token_transfer_fees(origin, 1, 1, eth(1)));
+	});
+}
+
+#[test]
+fn set_token_transfer_fees_root_only() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::signed([14; 32].into());
+
+		assert_noop!(EthereumSystem::set_token_transfer_fees(origin, 1, 1, 1.into()), BadOrigin);
+	});
+}
+
+#[test]
+fn set_token_transfer_fees_invalid() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+
+		assert_noop!(
+			EthereumSystem::set_token_transfer_fees(origin, 0, 0, 0.into()),
+			Error::<Test>::InvalidTokenTransferFees
+		);
+	});
+}
+
+#[test]
+fn create_channel() {
+	new_test_ext(true).execute_with(|| {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let sovereign_account = sibling_sovereign_account::<Test>(origin_para_id.into());
+		let origin = make_xcm_origin(origin_location);
+
+		// fund sovereign account of origin
+		let _ = Balances::mint_into(&sovereign_account, 10000);
+
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin, OperatingMode::Normal));
+	});
+}
+
+#[test]
+fn create_channel_fail_already_exists() {
+	new_test_ext(true).execute_with(|| {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let sovereign_account = sibling_sovereign_account::<Test>(origin_para_id.into());
+		let origin = make_xcm_origin(origin_location);
+
+		// fund sovereign account of origin
+		let _ = Balances::mint_into(&sovereign_account, 10000);
+
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin.clone(), OperatingMode::Normal));
+
+		assert_noop!(
+			EthereumSystem::create_channel(origin, OperatingMode::Normal),
+			Error::<Test>::ChannelAlreadyCreated
+		);
+	});
+}
+
+#[test]
+fn create_channel_bad_origin() {
+	new_test_ext(true).execute_with(|| {
+		// relay chain location not allowed
+		assert_noop!(
+			EthereumSystem::create_channel(
+				make_xcm_origin(MultiLocation { parents: 1, interior: Here }),
+				OperatingMode::Normal,
+			),
+			BadOrigin,
+		);
+
+		// child of sibling location not allowed
+		assert_noop!(
+			EthereumSystem::create_channel(
+				make_xcm_origin(MultiLocation {
+					parents: 1,
+					interior: X2(
+						Parachain(2000),
+						Junction::AccountId32 { network: None, id: [67u8; 32] }
+					),
+				}),
+				OperatingMode::Normal,
+			),
+			BadOrigin,
+		);
+
+		// local account location not allowed
+		assert_noop!(
+			EthereumSystem::create_channel(
+				make_xcm_origin(MultiLocation {
+					parents: 0,
+					interior: X1(Junction::AccountId32 { network: None, id: [67u8; 32] }),
+				}),
+				OperatingMode::Normal,
+			),
+			BadOrigin,
+		);
+
+		// Signed origin not allowed
+		assert_noop!(
+			EthereumSystem::create_channel(
+				RuntimeOrigin::signed([14; 32].into()),
+				OperatingMode::Normal,
+			),
+			BadOrigin
+		);
+
+		// None origin not allowed
+		assert_noop!(EthereumSystem::create_agent(RuntimeOrigin::none()), BadOrigin);
+	});
+}
+
+#[test]
+fn update_channel() {
+	new_test_ext(true).execute_with(|| {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let sovereign_account = sibling_sovereign_account::<Test>(origin_para_id.into());
+		let origin = make_xcm_origin(origin_location);
+
+		// First create the channel
+		let _ = Balances::mint_into(&sovereign_account, 10000);
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin.clone(), OperatingMode::Normal));
+
+		// Now try to update it
+		assert_ok!(EthereumSystem::update_channel(origin, OperatingMode::Normal));
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(crate::Event::UpdateChannel {
+			channel_id: ParaId::from(2000).into(),
+			mode: OperatingMode::Normal,
+		}));
+	});
+}
+
+#[test]
+fn update_channel_bad_origin() {
+	new_test_ext(true).execute_with(|| {
+		let mode = OperatingMode::Normal;
+
+		// relay chain location not allowed
+		assert_noop!(
+			EthereumSystem::update_channel(
+				make_xcm_origin(MultiLocation { parents: 1, interior: Here }),
+				mode,
+			),
+			BadOrigin,
+		);
+
+		// child of sibling location not allowed
+		assert_noop!(
+			EthereumSystem::update_channel(
+				make_xcm_origin(MultiLocation {
+					parents: 1,
+					interior: X2(
+						Parachain(2000),
+						Junction::AccountId32 { network: None, id: [67u8; 32] }
+					),
+				}),
+				mode,
+			),
+			BadOrigin,
+		);
+
+		// local account location not allowed
+		assert_noop!(
+			EthereumSystem::update_channel(
+				make_xcm_origin(MultiLocation {
+					parents: 0,
+					interior: X1(Junction::AccountId32 { network: None, id: [67u8; 32] }),
+				}),
+				mode,
+			),
+			BadOrigin,
+		);
+
+		// Signed origin not allowed
+		assert_noop!(
+			EthereumSystem::update_channel(RuntimeOrigin::signed([14; 32].into()), mode),
+			BadOrigin
+		);
+
+		// None origin not allowed
+		assert_noop!(EthereumSystem::update_channel(RuntimeOrigin::none(), mode), BadOrigin);
+	});
+}
+
+#[test]
+fn update_channel_fails_not_exist() {
+	new_test_ext(true).execute_with(|| {
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(2000)) };
+		let origin = make_xcm_origin(origin_location);
+
+		// Now try to update it
+		assert_noop!(
+			EthereumSystem::update_channel(origin, OperatingMode::Normal),
+			Error::<Test>::NoChannel
+		);
+	});
+}
+
+#[test]
+fn force_update_channel() {
+	new_test_ext(true).execute_with(|| {
+		let origin_para_id = 2000;
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(origin_para_id)) };
+		let sovereign_account = sibling_sovereign_account::<Test>(origin_para_id.into());
+		let origin = make_xcm_origin(origin_location);
+
+		let channel_id: ChannelId = ParaId::from(origin_para_id).into();
+
+		// First create the channel
+		let _ = Balances::mint_into(&sovereign_account, 10000);
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin.clone(), OperatingMode::Normal));
+
+		// Now try to force update it
+		let force_origin = RuntimeOrigin::root();
+		assert_ok!(EthereumSystem::force_update_channel(
+			force_origin,
+			channel_id,
+			OperatingMode::Normal,
+		));
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(crate::Event::UpdateChannel {
+			channel_id: ParaId::from(2000).into(),
+			mode: OperatingMode::Normal,
+		}));
+	});
+}
+
+#[test]
+fn force_update_channel_bad_origin() {
+	new_test_ext(true).execute_with(|| {
+		let mode = OperatingMode::Normal;
+
+		// signed origin not allowed
+		assert_noop!(
+			EthereumSystem::force_update_channel(
+				RuntimeOrigin::signed([14; 32].into()),
+				ParaId::from(1000).into(),
+				mode,
+			),
+			BadOrigin,
+		);
+	});
+}
+
+#[test]
+fn transfer_native_from_agent() {
+	new_test_ext(true).execute_with(|| {
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(2000)) };
+		let origin = make_xcm_origin(origin_location);
+		let recipient: H160 = [27u8; 20].into();
+		let amount = 103435;
+
+		// First create the agent and channel
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin, OperatingMode::Normal));
+
+		let origin = make_xcm_origin(origin_location);
+		assert_ok!(EthereumSystem::transfer_native_from_agent(origin, recipient, amount),);
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(
+			crate::Event::TransferNativeFromAgent {
+				agent_id: make_agent_id(origin_location),
+				recipient,
+				amount,
+			},
+		));
+	});
+}
+
+#[test]
+fn force_transfer_native_from_agent() {
+	new_test_ext(true).execute_with(|| {
+		let origin = RuntimeOrigin::root();
+		let location = MultiLocation { parents: 1, interior: X1(Parachain(2000)) };
+		let versioned_location: Box<VersionedMultiLocation> = Box::new(location.into());
+		let recipient: H160 = [27u8; 20].into();
+		let amount = 103435;
+
+		// First create the agent
+		Agents::<Test>::insert(make_agent_id(location), ());
+
+		assert_ok!(EthereumSystem::force_transfer_native_from_agent(
+			origin,
+			versioned_location,
+			recipient,
+			amount
+		),);
+
+		System::assert_last_event(RuntimeEvent::EthereumSystem(
+			crate::Event::TransferNativeFromAgent {
+				agent_id: make_agent_id(location),
+				recipient,
+				amount,
+			},
+		));
+	});
+}
+
+#[test]
+fn force_transfer_native_from_agent_bad_origin() {
+	new_test_ext(true).execute_with(|| {
+		let recipient: H160 = [27u8; 20].into();
+		let amount = 103435;
+
+		// signed origin not allowed
+		assert_noop!(
+			EthereumSystem::force_transfer_native_from_agent(
+				RuntimeOrigin::signed([14; 32].into()),
+				Box::new(
+					MultiLocation {
+						parents: 1,
+						interior: X2(
+							Parachain(2000),
+							Junction::AccountId32 { network: None, id: [67u8; 32] }
+						),
+					}
+					.into()
+				),
+				recipient,
+				amount,
+			),
+			BadOrigin,
+		);
+	});
+}
+
+// NOTE: The following tests are not actually tests and are more about obtaining location
+// conversions for devops purposes. They need to be removed here and incorporated into a command
+// line utility.
+
+#[ignore]
+#[test]
+fn check_sibling_sovereign_account() {
+	new_test_ext(true).execute_with(|| {
+		let para_id = 1001;
+		let sovereign_account = sibling_sovereign_account::<Test>(para_id.into());
+		let sovereign_account_raw = sibling_sovereign_account_raw(para_id.into());
+		println!(
+			"Sovereign account for parachain {}: {:#?}",
+			para_id,
+			hex::encode(sovereign_account.clone())
+		);
+		assert_eq!(sovereign_account, sovereign_account_raw.into());
+	});
+}
+
+#[test]
+fn charge_fee_for_create_agent() {
+	new_test_ext(true).execute_with(|| {
+		let para_id: u32 = TestParaId::get();
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(para_id)) };
+		let origin = make_xcm_origin(origin_location);
+		let sovereign_account = sibling_sovereign_account::<Test>(para_id.into());
+		let (_, agent_id) = ensure_sibling::<Test>(&origin_location).unwrap();
+
+		let initial_sovereign_balance = Balances::balance(&sovereign_account);
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		let fee_charged = initial_sovereign_balance - Balances::balance(&sovereign_account);
+
+		assert_ok!(EthereumSystem::create_channel(origin, OperatingMode::Normal));
+
+		// assert sovereign_balance decreased by (fee.base_fee + fee.delivery_fee)
+		let message = Message {
+			id: None,
+			channel_id: ParaId::from(para_id).into(),
+			command: Command::CreateAgent { agent_id },
+		};
+		let (_, fee) = OutboundQueue::validate(&message).unwrap();
+		assert_eq!(fee.local + fee.remote, fee_charged);
+
+		// and treasury_balance increased
+		let treasury_balance = Balances::balance(&TreasuryAccount::get());
+		assert!(treasury_balance > InitialFunding::get());
+
+		let final_sovereign_balance = Balances::balance(&sovereign_account);
+		// (sovereign_balance + treasury_balance) keeps the same
+		assert_eq!(final_sovereign_balance + treasury_balance, { InitialFunding::get() * 2 });
+	});
+}
+
+#[test]
+fn charge_fee_for_transfer_native_from_agent() {
+	new_test_ext(true).execute_with(|| {
+		let para_id: u32 = TestParaId::get();
+		let origin_location = MultiLocation { parents: 1, interior: X1(Parachain(para_id)) };
+		let recipient: H160 = [27u8; 20].into();
+		let amount = 103435;
+		let origin = make_xcm_origin(origin_location);
+		let (_, agent_id) = ensure_sibling::<Test>(&origin_location).unwrap();
+
+		let sovereign_account = sibling_sovereign_account::<Test>(para_id.into());
+
+		// create_agent & create_channel first
+		assert_ok!(EthereumSystem::create_agent(origin.clone()));
+		assert_ok!(EthereumSystem::create_channel(origin.clone(), OperatingMode::Normal));
+
+		// assert sovereign_balance decreased by only the base_fee
+		let sovereign_balance_before = Balances::balance(&sovereign_account);
+		assert_ok!(EthereumSystem::transfer_native_from_agent(origin.clone(), recipient, amount));
+		let message = Message {
+			id: None,
+			channel_id: ParaId::from(para_id).into(),
+			command: Command::TransferNativeFromAgent { agent_id, recipient, amount },
+		};
+		let (_, fee) = OutboundQueue::validate(&message).unwrap();
+		let sovereign_balance_after = Balances::balance(&sovereign_account);
+		assert_eq!(sovereign_balance_after + fee.local, sovereign_balance_before);
+	});
+}
+
+#[test]
+fn charge_fee_for_upgrade() {
+	new_test_ext(true).execute_with(|| {
+		let para_id: u32 = TestParaId::get();
+		let origin = RuntimeOrigin::root();
+		let address: H160 = Default::default();
+		let code_hash: H256 = Default::default();
+		let initializer: Option<Initializer> =
+			Some(Initializer { params: [0; 256].into(), maximum_required_gas: 10000 });
+		assert_ok!(EthereumSystem::upgrade(origin, address, code_hash, initializer.clone()));
+
+		// assert sovereign_balance does not change as we do not charge for sudo operations
+		let sovereign_account = sibling_sovereign_account::<Test>(para_id.into());
+		let sovereign_balance = Balances::balance(&sovereign_account);
+		assert_eq!(sovereign_balance, InitialFunding::get());
+	});
+}
+
+#[test]
+fn genesis_build_initializes_correctly() {
+	new_test_ext(true).execute_with(|| {
+		assert!(EthereumSystem::is_initialized(), "Ethereum uninitialized.");
+	});
+}
+
+#[test]
+fn no_genesis_build_is_uninitialized() {
+	new_test_ext(false).execute_with(|| {
+		assert!(!EthereumSystem::is_initialized(), "Ethereum initialized.");
+	});
+}

bridges/snowbridge/parachain/pallets/system/src/weights.rs

@@ -0,0 +1,249 @@
+
+//! Autogenerated weights for `snowbridge_system`
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
+//! DATE: 2023-10-09, STEPS: `2`, REPEAT: `1`, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! WORST CASE MAP SIZE: `1000000`
+//! HOSTNAME: `crake.local`, CPU: `<UNKNOWN>`
+//! WASM-EXECUTION: `Compiled`, CHAIN: `Some("bridge-hub-rococo-dev")`, DB CACHE: `1024`
+
+// Executed Command:
+// target/release/polkadot-parachain
+// benchmark
+// pallet
+// --chain
+// bridge-hub-rococo-dev
+// --pallet=snowbridge_system
+// --extrinsic=*
+// --execution=wasm
+// --wasm-execution=compiled
+// --template
+// ../parachain/templates/module-weight-template.hbs
+// --output
+// ../parachain/pallets/control/src/weights.rs
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{traits::Get, weights::{Weight, constants::RocksDbWeight}};
+use core::marker::PhantomData;
+
+/// Weight functions needed for `snowbridge_system`.
+pub trait WeightInfo {
+	fn upgrade() -> Weight;
+	fn create_agent() -> Weight;
+	fn create_channel() -> Weight;
+	fn update_channel() -> Weight;
+	fn force_update_channel() -> Weight;
+	fn set_operating_mode() -> Weight;
+	fn transfer_native_from_agent() -> Weight;
+	fn force_transfer_native_from_agent() -> Weight;
+	fn set_token_transfer_fees() -> Weight;
+	fn set_pricing_parameters() -> Weight;
+}
+
+// For backwards compatibility and tests.
+impl WeightInfo for () {
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:1)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn upgrade() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `80`
+		//  Estimated: `3517`
+		// Minimum execution time: 44_000_000 picoseconds.
+		Weight::from_parts(44_000_000, 3517)
+			.saturating_add(RocksDbWeight::get().reads(4_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+	/// Storage: EthereumSystem Agents (r:1 w:1)
+	/// Proof: EthereumSystem Agents (max_values: None, max_size: Some(40), added: 2515, mode: MaxEncodedLen)
+	/// Storage: System Account (r:2 w:2)
+	/// Proof: System Account (max_values: None, max_size: Some(128), added: 2603, mode: MaxEncodedLen)
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:1)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn create_agent() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `187`
+		//  Estimated: `6196`
+		// Minimum execution time: 85_000_000 picoseconds.
+		Weight::from_parts(85_000_000, 6196)
+			.saturating_add(RocksDbWeight::get().reads(7_u64))
+			.saturating_add(RocksDbWeight::get().writes(6_u64))
+	}
+	/// Storage: System Account (r:2 w:2)
+	/// Proof: System Account (max_values: None, max_size: Some(128), added: 2603, mode: MaxEncodedLen)
+	/// Storage: EthereumSystem Agents (r:1 w:0)
+	/// Proof: EthereumSystem Agents (max_values: None, max_size: Some(40), added: 2515, mode: MaxEncodedLen)
+	/// Storage: EthereumSystem Channels (r:1 w:1)
+	/// Proof: EthereumSystem Channels (max_values: None, max_size: Some(12), added: 2487, mode: MaxEncodedLen)
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:1 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn create_channel() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `602`
+		//  Estimated: `69050`
+		// Minimum execution time: 83_000_000 picoseconds.
+		Weight::from_parts(83_000_000, 69050)
+			.saturating_add(RocksDbWeight::get().reads(8_u64))
+			.saturating_add(RocksDbWeight::get().writes(5_u64))
+	}
+	/// Storage: EthereumSystem Channels (r:1 w:0)
+	/// Proof: EthereumSystem Channels (max_values: None, max_size: Some(12), added: 2487, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:2 w:2)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:0)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn update_channel() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `256`
+		//  Estimated: `6044`
+		// Minimum execution time: 40_000_000 picoseconds.
+		Weight::from_parts(40_000_000, 6044)
+			.saturating_add(RocksDbWeight::get().reads(5_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+	/// Storage: EthereumSystem Channels (r:1 w:0)
+	/// Proof: EthereumSystem Channels (max_values: None, max_size: Some(12), added: 2487, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:2 w:2)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:0)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn force_update_channel() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `256`
+		//  Estimated: `6044`
+		// Minimum execution time: 41_000_000 picoseconds.
+		Weight::from_parts(41_000_000, 6044)
+			.saturating_add(RocksDbWeight::get().reads(5_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:1)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn set_operating_mode() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `80`
+		//  Estimated: `3517`
+		// Minimum execution time: 31_000_000 picoseconds.
+		Weight::from_parts(31_000_000, 3517)
+			.saturating_add(RocksDbWeight::get().reads(4_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+	/// Storage: EthereumSystem Agents (r:1 w:0)
+	/// Proof: EthereumSystem Agents (max_values: None, max_size: Some(40), added: 2515, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:2 w:2)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:0)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn transfer_native_from_agent() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `252`
+		//  Estimated: `6044`
+		// Minimum execution time: 45_000_000 picoseconds.
+		Weight::from_parts(45_000_000, 6044)
+			.saturating_add(RocksDbWeight::get().reads(5_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+	/// Storage: EthereumSystem Agents (r:1 w:0)
+	/// Proof: EthereumSystem Agents (max_values: None, max_size: Some(40), added: 2515, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:2 w:2)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:0)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn force_transfer_native_from_agent() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `252`
+		//  Estimated: `6044`
+		// Minimum execution time: 42_000_000 picoseconds.
+		Weight::from_parts(42_000_000, 6044)
+			.saturating_add(RocksDbWeight::get().reads(5_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:1)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn set_token_transfer_fees() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `80`
+		//  Estimated: `3517`
+		// Minimum execution time: 31_000_000 picoseconds.
+		Weight::from_parts(42_000_000, 3517)
+			.saturating_add(RocksDbWeight::get().reads(4_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+
+	/// Storage: ParachainInfo ParachainId (r:1 w:0)
+	/// Proof: ParachainInfo ParachainId (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: EthereumOutboundQueue PalletOperatingMode (r:1 w:0)
+	/// Proof: EthereumOutboundQueue PalletOperatingMode (max_values: Some(1), max_size: Some(1), added: 496, mode: MaxEncodedLen)
+	/// Storage: MessageQueue BookStateFor (r:1 w:1)
+	/// Proof: MessageQueue BookStateFor (max_values: None, max_size: Some(52), added: 2527, mode: MaxEncodedLen)
+	/// Storage: MessageQueue ServiceHead (r:1 w:1)
+	/// Proof: MessageQueue ServiceHead (max_values: Some(1), max_size: Some(5), added: 500, mode: MaxEncodedLen)
+	/// Storage: MessageQueue Pages (r:0 w:1)
+	/// Proof: MessageQueue Pages (max_values: None, max_size: Some(65585), added: 68060, mode: MaxEncodedLen)
+	fn set_pricing_parameters() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `80`
+		//  Estimated: `3517`
+		// Minimum execution time: 31_000_000 picoseconds.
+		Weight::from_parts(42_000_000, 3517)
+			.saturating_add(RocksDbWeight::get().reads(4_u64))
+			.saturating_add(RocksDbWeight::get().writes(3_u64))
+	}
+}