Claim funds on Substrate chain by providing proof of funds locking on PoA chain (#91)

* ethereum exchange module * continue * continue * added tests for exchange module * moved * remove println * move again * fixes * removed redundant deps * cargo fmt * fund_locks_transaction_decode_works * cargo fmt --all * fix error processing * added some tracing to bridge modules * more tests * more tests * cargo fmt --all * kovan.rs -> exchange.rs * Update bin/node/runtime/src/exchange.rs Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com> * added assumption doc * Airdrop -> DepositInto * AsIs -> Identity * OnTransactionSubmitted * Transfers::Key = Id * typo * Update bin/node/runtime/src/exchange.rs Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com> * block+tx+proof -> proof { block, tx, proof } * cargo fmt --all * docs * check <-> verify * parse hex * extracted exchange primitives to separate crate * added docs to runtime::exchange module * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * typo * Update modules/currency-exchange/Cargo.toml Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * add docs to currency-exchange module * change tests names * cargo fmt --all * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * Update bin/node/runtime/src/exchange.rs Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com> * fixed verify_transaction_finalized for siblings of finalized blocks * cargo fmt --all * added double spend note * cargo fmt --all Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com> Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
2026-04-30 18:57:57 +00:00 · 2020-06-05 04:12:31 +03:00
parent a7e7c895f6
commit 7294ea44e1
14 changed files with 1300 additions and 26 deletions
@@ -24,6 +24,8 @@
 #[cfg(feature = "std")]
 include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

+mod exchange;
+
 pub mod kovan;

 use codec::{Decode, Encode};
@@ -47,11 +49,12 @@ use sp_version::RuntimeVersion;
 // A few exports that help ease life for downstream crates.
 pub use frame_support::{
 	construct_runtime, parameter_types,
-	traits::{KeyOwnerProofSystem, Randomness},
+	traits::{Currency, ExistenceRequirement, KeyOwnerProofSystem, Randomness},
 	weights::{IdentityFee, RuntimeDbWeight, Weight},
 	StorageValue,
 };
 pub use pallet_balances::Call as BalancesCall;
+pub use pallet_bridge_currency_exchange::Call as BridgeCurrencyExchangeCall;
 pub use pallet_bridge_eth_poa::Call as BridgeEthPoACall;
 pub use pallet_timestamp::Call as TimestampCall;
 #[cfg(any(feature = "std", test))]
@@ -223,6 +226,46 @@ impl pallet_bridge_eth_poa::Trait for Runtime {
 	type OnHeadersSubmitted = ();
 }

+impl pallet_bridge_currency_exchange::Trait for Runtime {
+	type OnTransactionSubmitted = ();
+	type PeerBlockchain = exchange::EthBlockchain;
+	type PeerMaybeLockFundsTransaction = exchange::EthTransaction;
+	type RecipientsMap = sp_currency_exchange::IdentityRecipients<AccountId>;
+	type Amount = Balance;
+	type CurrencyConverter = sp_currency_exchange::IdentityCurrencyConverter<Balance>;
+	type DepositInto = DepositInto;
+}
+
+pub struct DepositInto;
+
+impl sp_currency_exchange::DepositInto for DepositInto {
+	type Recipient = AccountId;
+	type Amount = Balance;
+
+	fn deposit_into(recipient: Self::Recipient, amount: Self::Amount) -> sp_currency_exchange::Result<()> {
+		<pallet_balances::Module<Runtime> as Currency<AccountId>>::deposit_into_existing(&recipient, amount)
+			.map(|_| {
+				frame_support::debug::trace!(
+					target: "runtime",
+					"Deposited {} to {:?}",
+					amount,
+					recipient,
+				);
+			})
+			.map_err(|e| {
+				frame_support::debug::error!(
+					target: "runtime",
+					"Deposit of {} to {:?} has failed with: {:?}",
+					amount,
+					recipient,
+					e
+				);
+
+				sp_currency_exchange::Error::DepositFailed
+			})
+	}
+}
+
 impl pallet_grandpa::Trait for Runtime {
 	type Event = Event;
 	type Call = Call;
@@ -364,6 +407,7 @@ construct_runtime!(
 		Sudo: pallet_sudo::{Module, Call, Config<T>, Storage, Event<T>},
 		Session: pallet_session::{Module, Call, Storage, Event, Config<T>},
 		BridgeEthPoA: pallet_bridge_eth_poa::{Module, Call, Config, Storage, ValidateUnsigned},
+		BridgeCurrencyExchange: pallet_bridge_currency_exchange::{Module, Call},
 	}
 );