Use new MultiLocation syntax everywhere (#570)

* Use new MultiLocation syntax everywhere

* Make tests compile

pallets/dmp-queue/src/lib.rs

@@ -26,7 +26,7 @@ use cumulus_primitives_core::relay_chain::BlockNumber as RelayBlockNumber;
 use cumulus_primitives_core::DmpMessageHandler;
 use codec::{Encode, Decode};
 use sp_runtime::RuntimeDebug;
-use xcm::{VersionedXcm, latest::{Xcm, Junction, Outcome, ExecuteXcm, Error as XcmError}};
+use xcm::{VersionedXcm, latest::{Xcm, Outcome, Parent, ExecuteXcm, Error as XcmError}};
 use frame_support::{traits::EnsureOrigin, dispatch::Weight, weights::constants::WEIGHT_PER_MILLIS};
 pub use pallet::*;
 
@@ -245,7 +245,7 @@ pub mod pallet {
 					Ok(0)
 				},
 				Ok(Ok(x)) => {
-					let outcome = T::XcmExecutor::execute_xcm(Junction::Parent.into(), x, limit);
+					let outcome = T::XcmExecutor::execute_xcm(Parent.into(), x, limit);
 					match outcome {
 						Outcome::Error(XcmError::WeightLimitReached(required)) => Err((id, required)),
 						outcome => {

pallets/xcm/src/lib.rs

@@ -25,7 +25,7 @@ use cumulus_primitives_core::{ParaId, DmpMessageHandler};
 use cumulus_primitives_core::relay_chain::BlockNumber as RelayBlockNumber;
 use codec::{Encode, Decode};
 use sp_runtime::traits::BadOrigin;
-use xcm::{VersionedXcm, latest::{Xcm, Junction, Outcome, ExecuteXcm}};
+use xcm::{VersionedXcm, latest::{Xcm, Outcome, Parent, ExecuteXcm}};
 use frame_support::dispatch::Weight;
 pub use pallet::*;
 
@@ -118,7 +118,7 @@ impl<T: Config> DmpMessageHandler for UnlimitedDmpExecution<T> {
 				Err(_) => Pallet::<T>::deposit_event(Event::InvalidFormat(id)),
 				Ok(Err(())) => Pallet::<T>::deposit_event(Event::UnsupportedVersion(id)),
 				Ok(Ok(x)) => {
-					let outcome = T::XcmExecutor::execute_xcm(Junction::Parent.into(), x, limit);
+					let outcome = T::XcmExecutor::execute_xcm(Parent.into(), x, limit);
 					used += outcome.weight_used();
 					Pallet::<T>::deposit_event(Event::ExecutedDownward(id, outcome));
 				}
@@ -149,7 +149,7 @@ impl<T: Config> DmpMessageHandler for LimitAndDropDmpExecution<T> {
 				Ok(Err(())) => Pallet::<T>::deposit_event(Event::UnsupportedVersion(id)),
 				Ok(Ok(x)) => {
 					let weight_limit = limit.saturating_sub(used);
-					let outcome = T::XcmExecutor::execute_xcm(Junction::Parent.into(), x, weight_limit);
+					let outcome = T::XcmExecutor::execute_xcm(Parent.into(), x, weight_limit);
 					used += outcome.weight_used();
 					Pallet::<T>::deposit_event(Event::ExecutedDownward(id, outcome));
 				}

pallets/xcmp-queue/src/lib.rs

@@ -351,7 +351,7 @@ impl<T: Config> Pallet<T> {
 		log::debug!("Processing XCMP-XCM: {:?}", &hash);
 		let (result, event) = match Xcm::<T::Call>::try_from(xcm) {
 			Ok(xcm) => {
-				let location = (Parent, Parachain(sender.into()));
+				let location = (1, Parachain(sender.into()));
 				match T::XcmExecutor::execute_xcm(location.into(), xcm, max_weight) {
 					Outcome::Error(e) => (Err(e.clone()), Event::Fail(Some(hash), e)),
 					Outcome::Complete(w) => (Ok(w), Event::Success(Some(hash))),
@@ -777,7 +777,7 @@ impl<T: Config> SendXcm for Pallet<T> {
 	fn send_xcm(dest: MultiLocation, msg: Xcm<()>) -> Result<(), XcmError> {
 		match &dest {
 			// An HRMP message for a sibling parachain.
-			X2(Parent, Parachain(id)) => {
+			MultiLocation { parents: 1, interior: X1(Parachain(id)) } => {
 				let versioned_xcm = T::VersionWrapper::wrap_version(&dest, msg)
 					.map_err(|()| XcmError::DestinationUnsupported)?;
 				let hash = T::Hashing::hash_of(&versioned_xcm);

pallets/xcmp-queue/src/mock.rs

@@ -104,8 +104,8 @@ impl cumulus_pallet_parachain_system::Config for Test {
 }
 
 parameter_types! {
-	pub const RelayChain: MultiLocation = X1(Parent);
-	pub Ancestry: MultiLocation = X1(Parachain(1u32.into()));
+	pub const RelayChain: MultiLocation = MultiLocation::parent();
+	pub Ancestry: MultiLocation = X1(Parachain(1u32.into())).into();
 	pub UnitWeightCost: Weight = 1_000_000;
 }
 

polkadot-parachains/pallets/ping/src/lib.rs

@@ -23,7 +23,7 @@ use sp_runtime::traits::Saturating;
 use frame_system::Config as SystemConfig;
 use cumulus_primitives_core::ParaId;
 use cumulus_pallet_xcm::{Origin as CumulusOrigin, ensure_sibling_para};
-use xcm::latest::{Xcm, Error as XcmError, SendXcm, OriginKind, MultiLocation, Junction};
+use xcm::latest::{Xcm, Error as XcmError, SendXcm, OriginKind, Junction};
 
 pub use pallet::*;
 
@@ -101,7 +101,7 @@ pub mod pallet {
 			for (para, payload) in Targets::<T>::get().into_iter() {
 				let seq = PingCount::<T>::mutate(|seq| { *seq += 1; *seq });
 				match T::XcmSender::send_xcm(
-					MultiLocation::X2(Junction::Parent, Junction::Parachain(para.into())),
+					(1, Junction::Parachain(para.into())).into(),
 					Xcm::Transact {
 						origin_type: OriginKind::Native,
 						require_weight_at_most: 1_000,
@@ -163,7 +163,7 @@ pub mod pallet {
 
 			Self::deposit_event(Event::Pinged(para, seq, payload.clone()));
 			match T::XcmSender::send_xcm(
-				MultiLocation::X2(Junction::Parent, Junction::Parachain(para.into())),
+				(1, Junction::Parachain(para.into())).into(),
 				Xcm::Transact {
 					origin_type: OriginKind::Native,
 					require_weight_at_most: 1_000,

polkadot-parachains/rococo/src/lib.rs

@@ -257,10 +257,10 @@ impl parachain_info::Config for Runtime {}
 impl cumulus_pallet_aura_ext::Config for Runtime {}
 
 parameter_types! {
-	pub const RocLocation: MultiLocation = X1(Parent);
+	pub const RocLocation: MultiLocation = MultiLocation::parent();
 	pub const RococoNetwork: NetworkId = NetworkId::Polkadot;
 	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
-	pub Ancestry: MultiLocation = X1(Parachain(ParachainInfo::parachain_id().into()));
+	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
 }
 
 /// Type for specifying how a `MultiLocation` can be converted into an `AccountId`. This is used
@@ -317,12 +317,13 @@ parameter_types! {
 	// One XCM operation is 1_000_000 weight - almost certainly a conservative estimate.
 	pub UnitWeightCost: Weight = 1_000_000;
 	// One ROC buys 1 second of weight.
-	pub const WeightPrice: (MultiLocation, u128) = (X1(Parent), ROC);
+	pub const WeightPrice: (MultiLocation, u128) = (MultiLocation::parent(), ROC);
 }
 
 match_type! {
 	pub type ParentOrParentsUnitPlurality: impl Contains<MultiLocation> = {
-		X1(Parent) | X2(Parent, Plurality { id: BodyId::Unit, .. })
+		MultiLocation { parents: 1, interior: Here } |
+		MultiLocation { parents: 1, interior: X1(Plurality { id: BodyId::Unit, .. }) }
 	};
 }
 

polkadot-parachains/shell/src/lib.rs

@@ -172,7 +172,7 @@ impl cumulus_pallet_parachain_system::Config for Runtime {
 impl parachain_info::Config for Runtime {}
 
 parameter_types! {
-	pub const RococoLocation: MultiLocation = X1(Parent);
+	pub const RococoLocation: MultiLocation = MultiLocation::parent();
 	pub const RococoNetwork: NetworkId = NetworkId::Polkadot;
 	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
 }
@@ -191,7 +191,7 @@ pub type XcmOriginToTransactDispatchOrigin = (
 );
 
 match_type! {
-	pub type JustTheParent: impl Contains<MultiLocation> = { X1(Parent) };
+	pub type JustTheParent: impl Contains<MultiLocation> = { MultiLocation { parents:1, interior: Here } };
 }
 
 parameter_types! {

polkadot-parachains/statemine/src/lib.rs

@@ -466,7 +466,7 @@ impl parachain_info::Config for Runtime {}
 impl cumulus_pallet_aura_ext::Config for Runtime {}
 
 parameter_types! {
-	pub const KsmLocation: MultiLocation = X1(Parent);
+	pub const KsmLocation: MultiLocation = MultiLocation::parent();
 	pub const RelayNetwork: NetworkId = NetworkId::Kusama;
 	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
 	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
@@ -529,8 +529,8 @@ parameter_types! {
 
 match_type! {
 	pub type ParentOrParentsExecutivePlurality: impl Contains<MultiLocation> = {
-		X1(Parent) |
-		X2(Parent, Plurality { id: BodyId::Executive, .. })
+		MultiLocation { parents: 1, interior: Here } |
+		MultiLocation { parents: 1, interior: X1(Plurality { id: BodyId::Executive, .. }) }
 	};
 }
 

polkadot-parachains/statemint/src/lib.rs

@@ -432,7 +432,7 @@ impl parachain_info::Config for Runtime {}
 impl cumulus_pallet_aura_ext::Config for Runtime {}
 
 parameter_types! {
-	pub const DotLocation: MultiLocation = X1(Parent);
+	pub const DotLocation: MultiLocation = MultiLocation::parent();
 	pub const RelayNetwork: NetworkId = NetworkId::Polkadot;
 	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
 	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
@@ -495,8 +495,8 @@ parameter_types! {
 
 match_type! {
 	pub type ParentOrParentsExecutivePlurality: impl Contains<MultiLocation> = {
-		X1(Parent) |
-		X2(Parent, Plurality { id: BodyId::Executive, .. })
+		MultiLocation { parents: 1, interior: Here } |
+		MultiLocation { parents: 1, interior: X1(Plurality { id: BodyId::Executive, .. }) }
 	};
 }
 

polkadot-parachains/westmint/src/lib.rs

@@ -431,7 +431,7 @@ impl parachain_info::Config for Runtime {}
 impl cumulus_pallet_aura_ext::Config for Runtime {}
 
 parameter_types! {
-	pub const WestendLocation: MultiLocation = X1(Parent);
+	pub const WestendLocation: MultiLocation = MultiLocation::parent();
 	pub RelayNetwork: NetworkId = NetworkId::Named(b"Westend".to_vec());
 	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
 	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
@@ -493,8 +493,8 @@ parameter_types! {
 
 match_type! {
 	pub type ParentOrParentsPlurality: impl Contains<MultiLocation> = {
-		X1(Parent) |
-		X2(Parent, Plurality { .. })
+		MultiLocation { parents: 1, interior: Here } |
+		MultiLocation { parents: 1, interior: X1(Plurality { .. }) }
 	};
 }
 

primitives/utility/src/lib.rs

@@ -34,20 +34,19 @@ use xcm::{WrapVersion, latest::prelude::*};
 pub struct ParentAsUmp<T, W>(PhantomData<(T, W)>);
 impl<T: UpwardMessageSender, W: WrapVersion> SendXcm for ParentAsUmp<T, W> {
 	fn send_xcm(dest: MultiLocation, msg: Xcm<()>) -> Result<(), XcmError> {
-		match &dest {
+		if dest.contains_parents_only(1) {
 			// An upward message for the relay chain.
-			MultiLocation::X1(Parent) => {
-				let versioned_xcm = W::wrap_version(&dest, msg)
-					.map_err(|()| XcmError::DestinationUnsupported)?;
-				let data = versioned_xcm.encode();
+			let versioned_xcm = W::wrap_version(&dest, msg)
+				.map_err(|()| XcmError::DestinationUnsupported)?;
+			let data = versioned_xcm.encode();
 
-				T::send_upward_message(data)
-					.map_err(|e| XcmError::SendFailed(e.into()))?;
+			T::send_upward_message(data)
+				.map_err(|e| XcmError::SendFailed(e.into()))?;
 
-				Ok(())
-			}
+			Ok(())
+		} else {
 			// Anything else is unhandled. This includes a message this is meant for us.
-			_ => Err(XcmError::CannotReachDestination(dest, msg)),
+			Err(XcmError::CannotReachDestination(dest, msg))
 		}
 	}
 }

test/service/src/lib.rs

@@ -36,7 +36,7 @@ pub use sc_executor::NativeExecutor;
 use sc_network::{config::TransportConfig, multiaddr, NetworkService};
 use sc_service::{
 	config::{
-		DatabaseConfig, KeepBlocks, KeystoreConfig, MultiaddrWithPeerId, NetworkConfiguration,
+		DatabaseSource, KeepBlocks, KeystoreConfig, MultiaddrWithPeerId, NetworkConfiguration,
 		OffchainWorkerConfig, PruningMode, TransactionStorageMode, WasmExecutionMethod,
 	},
 	BasePath, ChainSpec, Configuration, Error as ServiceError, PartialComponents, Role,
@@ -600,7 +600,7 @@ pub fn node_config(
 		network: network_config,
 		keystore: KeystoreConfig::InMemory,
 		keystore_remote: Default::default(),
-		database: DatabaseConfig::RocksDb {
+		database: DatabaseSource::RocksDb {
 			path: root.join("db"),
 			cache_size: 128,
 		},