Update to latest Substrate master (#703)

* Update to latest Substrate master

* Fix tests

polkadot/runtime/src/attestations.rs

@@ -21,7 +21,7 @@
 
 use rstd::prelude::*;
 use codec::{Encode, Decode};
-use frame_support::{decl_storage, decl_module, ensure, dispatch::Result, traits::Get};
+use frame_support::{decl_storage, decl_module, ensure, dispatch::DispatchResult, traits::Get};
 
 use primitives::{Hash, parachain::{AttestedCandidate, CandidateReceipt, Id as ParaId}};
 use sp_runtime::RuntimeDebug;
@@ -110,7 +110,7 @@ decl_module! {
 	/// Parachain-attestations module.
 	pub struct Module<T: Trait> for enum Call where origin: <T as system::Trait>::Origin {
 		/// Provide candidate receipts for parachains, in ascending order by id.
-		fn more_attestations(origin, _more: MoreAttestations) -> Result {
+		fn more_attestations(origin, _more: MoreAttestations) -> DispatchResult {
 			ensure_none(origin)?;
 			ensure!(!<DidUpdate>::exists(), "More attestations can be added only once in a block.");
 			<DidUpdate>::put(true);

polkadot/runtime/src/claims.rs

@@ -305,6 +305,7 @@ mod tests {
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type MaximumBlockLength = MaximumBlockLength;
 		type Version = ();
+		type ModuleToIndex = ();
 	}
 
 	parameter_types! {
@@ -407,7 +408,7 @@ mod tests {
 		new_test_ext().execute_with(|| {
 			assert_noop!(
 				Claims::mint_claim(Origin::signed(42), eth(&bob()), 200, None),
-				"RequireRootOrigin"
+				sp_runtime::traits::BadOrigin,
 			);
 			assert_eq!(Balances::free_balance(&42), 0);
 			assert_noop!(
@@ -426,7 +427,7 @@ mod tests {
 		new_test_ext().execute_with(|| {
 			assert_noop!(
 				Claims::mint_claim(Origin::signed(42), eth(&bob()), 200, Some((50, 10, 1))),
-				"RequireRootOrigin"
+				sp_runtime::traits::BadOrigin,
 			);
 			assert_eq!(Balances::free_balance(&42), 0);
 			assert_noop!(
@@ -446,7 +447,7 @@ mod tests {
 			assert_eq!(Balances::free_balance(&42), 0);
 			assert_err!(
 				Claims::claim(Origin::signed(42), 42, sig(&alice(), &42u64.encode())),
-				"RequireNoOrigin",
+				sp_runtime::traits::BadOrigin,
 			);
 		});
 	}

polkadot/runtime/src/crowdfund.rs

@@ -506,7 +506,7 @@ mod tests {
 	// The testing primitives are very useful for avoiding having to work with signatures
 	// or public keys. `u64` is used as the `AccountId` and no `Signature`s are requried.
 	use sp_runtime::{
-		Perbill, Permill, testing::Header,
+		Perbill, Permill, testing::Header, DispatchResult,
 		traits::{BlakeTwo256, OnInitialize, OnFinalize, IdentityLookup},
 	};
 	use crate::registrar::Registrar;
@@ -542,6 +542,7 @@ mod tests {
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
+		type ModuleToIndex = ();
 	}
 	parameter_types! {
 		pub const ExistentialDeposit: u64 = 0;
@@ -594,12 +595,13 @@ mod tests {
 				(*p.borrow() - 1).into()
 			})
 		}
+
 		fn register_para(
 			id: ParaId,
 			_info: ParaInfo,
 			code: Vec<u8>,
 			initial_head_data: Vec<u8>
-		) -> Result<(), &'static str> {
+		) -> DispatchResult {
 			PARACHAINS.with(|p| {
 				if p.borrow().contains_key(&id.into()) {
 					panic!("ID already exists")
@@ -608,7 +610,8 @@ mod tests {
 				Ok(())
 			})
 		}
-		fn deregister_para(id: ParaId) -> Result<(), &'static str> {
+
+		fn deregister_para(id: ParaId) -> DispatchResult {
 			PARACHAINS.with(|p| {
 				if !p.borrow().contains_key(&id.into()) {
 					panic!("ID doesn't exist")

polkadot/runtime/src/lib.rs

@@ -97,7 +97,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 2,
-	spec_version: 1031,
+	spec_version: 1032,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };
@@ -163,6 +163,7 @@ impl system::Trait for Runtime {
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = Version;
+	type ModuleToIndex = ModuleToIndex;
 }
 
 parameter_types! {

polkadot/runtime/src/parachains.rs

@@ -23,7 +23,7 @@ use codec::{Encode, Decode};
 
 use sp_runtime::traits::{
 	Hash as HashT, BlakeTwo256, Saturating, One, Zero, Dispatchable,
-	AccountIdConversion,
+	AccountIdConversion, BadOrigin,
 };
 use frame_support::weights::SimpleDispatchInfo;
 use primitives::{
@@ -34,7 +34,7 @@ use primitives::{
 	},
 };
 use frame_support::{
-	Parameter, dispatch::Result, decl_storage, decl_module, ensure,
+	Parameter, dispatch::DispatchResult, decl_storage, decl_module, ensure,
 	traits::{Currency, Get, WithdrawReason, ExistenceRequirement, Randomness},
 };
 
@@ -74,7 +74,7 @@ fn number_range<N>(low: N, high: N) -> BlockNumberRange<N> {
 // doesn't work.`
 pub trait ParachainCurrency<AccountId> {
 	fn free_balance(para_id: ParaId) -> Balance;
-	fn deduct(para_id: ParaId, amount: Balance) -> Result;
+	fn deduct(para_id: ParaId, amount: Balance) -> DispatchResult;
 }
 
 impl<AccountId, T: Currency<AccountId>> ParachainCurrency<AccountId> for T where
@@ -86,7 +86,7 @@ impl<AccountId, T: Currency<AccountId>> ParachainCurrency<AccountId> for T where
 		T::free_balance(&para_account).into()
 	}
 
-	fn deduct(para_id: ParaId, amount: Balance) -> Result {
+	fn deduct(para_id: ParaId, amount: Balance) -> DispatchResult {
 		let para_account = para_id.into_account();
 
 		// burn the fee.
@@ -197,7 +197,7 @@ decl_module! {
 	pub struct Module<T: Trait> for enum Call where origin: <T as system::Trait>::Origin {
 		/// Provide candidate receipts for parachains, in ascending order by id.
 		#[weight = SimpleDispatchInfo::FixedNormal(1_000_000)]
-		pub fn set_heads(origin, heads: Vec<AttestedCandidate>) -> Result {
+		pub fn set_heads(origin, heads: Vec<AttestedCandidate>) -> DispatchResult {
 			ensure_none(origin)?;
 			ensure!(!<DidUpdate>::exists(), "Parachain heads must be updated only once in the block");
 
@@ -350,7 +350,7 @@ impl<T: Trait> Module<T> {
 		upward_messages: &[UpwardMessage],
 		max_queue_count: usize,
 		watermark_queue_size: usize,
-	) -> Result {
+	) -> DispatchResult {
 		// Either there are no more messages to add...
 		if !upward_messages.is_empty() {
 			let (count, size) = <RelayDispatchQueueSize>::get(id);
@@ -616,32 +616,32 @@ impl<T: Trait> Module<T> {
 	fn check_egress_queue_roots(
 		head: &AttestedCandidate,
 		active_parachains: &[(ParaId, Option<(CollatorId, Retriable)>)]
-	) -> Result {
+	) -> DispatchResult {
 		let mut last_egress_id = None;
 		let mut iter = active_parachains.iter().map(|x| x.0);
 		for (egress_para_id, root) in &head.candidate.egress_queue_roots {
 			// egress routes should be ascending order by parachain ID without duplicate.
 			ensure!(
 				last_egress_id.as_ref().map_or(true, |x| x < &egress_para_id),
-				"Egress routes out of order by ID"
+				"Egress routes out of order by ID",
 			);
 
 			// a parachain can't route to self
 			ensure!(
 				*egress_para_id != head.candidate.parachain_index,
-				"Parachain routing to self"
+				"Parachain routing to self",
 			);
 
 			// no empty trie roots
 			ensure!(
 				*root != EMPTY_TRIE_ROOT.into(),
-				"Empty trie root included"
+				"Empty trie root included",
 			);
 
 			// can't route to a parachain which doesn't exist
 			ensure!(
 				iter.find(|x| x == egress_para_id).is_some(),
-				"Routing to non-existent parachain"
+				"Routing to non-existent parachain",
 			);
 
 			last_egress_id = Some(egress_para_id)
@@ -654,7 +654,7 @@ impl<T: Trait> Module<T> {
 	fn check_candidates(
 		attested_candidates: &[AttestedCandidate],
 		active_parachains: &[(ParaId, Option<(CollatorId, Retriable)>)]
-	) -> rstd::result::Result<IncludedBlocks<T>, &'static str>
+	) -> rstd::result::Result<IncludedBlocks<T>, sp_runtime::DispatchError>
 	{
 		use primitives::parachain::ValidityAttestation;
 		use sp_runtime::traits::AppVerify;
@@ -739,12 +739,12 @@ impl<T: Trait> Module<T> {
 
 			ensure!(
 				candidate.validity_votes.len() >= majority_of(validator_group.len()),
-				"Not enough validity attestations"
+				"Not enough validity attestations",
 			);
 
 			ensure!(
 				candidate.validity_votes.len() <= authorities.len(),
-				"The number of attestations exceeds the number of authorities"
+				"The number of attestations exceeds the number of authorities",
 			);
 
 			let fees = candidate.candidate().fees;
@@ -762,7 +762,7 @@ impl<T: Trait> Module<T> {
 				.enumerate()
 			{
 				let validity_attestation = match candidate.validity_votes.get(vote_index) {
-					None => return Err("Not enough validity votes"),
+					None => Err("Not enough validity votes")?,
 					Some(v) => {
 						expected_votes_len = vote_index + 1;
 						v
@@ -770,7 +770,7 @@ impl<T: Trait> Module<T> {
 				};
 
 				if validator_group.iter().find(|&(idx, _)| *idx == auth_index).is_none() {
-					return Err("Attesting validator not on this chain's validation duty.");
+					Err("Attesting validator not on this chain's validation duty.")?
 				}
 
 				let (payload, sig) = match validity_attestation {
@@ -796,15 +796,15 @@ impl<T: Trait> Module<T> {
 
 				ensure!(
 					sig.verify(&payload[..], &authorities[auth_index]),
-					"Candidate validity attestation signature is bad."
+					"Candidate validity attestation signature is bad.",
 				);
 			}
 
 			para_block_hashes.push(candidate_hash.unwrap_or_else(|| candidate.candidate().hash()));
 
-		ensure!(
+			ensure!(
 				candidate.validity_votes.len() == expected_votes_len,
-				"Extra untagged validity votes along with candidate"
+				"Extra untagged validity votes along with candidate",
 			);
 		}
 
@@ -887,12 +887,12 @@ impl<T: Trait> ProvideInherent for Module<T> {
 
 /// Ensure that the origin `o` represents a parachain.
 /// Returns `Ok` with the parachain ID that effected the extrinsic or an `Err` otherwise.
-pub fn ensure_parachain<OuterOrigin>(o: OuterOrigin) -> result::Result<ParaId, &'static str>
+pub fn ensure_parachain<OuterOrigin>(o: OuterOrigin) -> result::Result<ParaId, BadOrigin>
 	where OuterOrigin: Into<result::Result<Origin, OuterOrigin>>
 {
 	match o.into() {
 		Ok(Origin::Parachain(id)) => Ok(id),
-		_ => Err("bad origin: expected to be a parachain origin"),
+		_ => Err(BadOrigin),
 	}
 }
 
@@ -961,6 +961,7 @@ mod tests {
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
+		type ModuleToIndex = ();
 	}
 
 	parameter_types! {
@@ -1516,7 +1517,7 @@ mod tests {
 			];
 			assert_err!(
 				Parachains::check_upward_messages(0.into(), &messages, 2, 3),
-				"Messages added when queue full"
+				"Messages added when queue full",
 			);
 		});
 	}
@@ -1537,7 +1538,7 @@ mod tests {
 			];
 			assert_err!(
 				Parachains::check_upward_messages(0.into(), &messages, 2, 3),
-				"Messages added when queue full"
+				"Messages added when queue full",
 			);
 		});
 	}
@@ -1967,7 +1968,7 @@ mod tests {
 				Origin::NONE,
 			);
 
-			assert_eq!(Err("Routing to non-existent parachain"), result);
+			assert_eq!(Err("Routing to non-existent parachain".into()), result);
 		});
 	}
 
@@ -1992,7 +1993,7 @@ mod tests {
 				Origin::NONE,
 			);
 
-			assert_eq!(Err("Parachain routing to self"), result);
+			assert_eq!(Err("Parachain routing to self".into()), result);
 		});
 	}
 
@@ -2017,7 +2018,7 @@ mod tests {
 				Origin::NONE,
 			);
 
-			assert_eq!(Err("Egress routes out of order by ID"), result);
+			assert_eq!(Err("Egress routes out of order by ID".into()), result);
 		});
 	}
 
@@ -2042,7 +2043,7 @@ mod tests {
 				Origin::NONE,
 			);
 
-			assert_eq!(Err("Empty trie root included"), result);
+			assert_eq!(Err("Empty trie root included".into()), result);
 		});
 	}
 

polkadot/runtime/src/registrar.rs

@@ -30,7 +30,7 @@ use sp_runtime::{
 
 use frame_support::{
 	decl_storage, decl_module, decl_event, ensure,
-	dispatch::{Result, IsSubType}, traits::{Get, Currency, ReservableCurrency},
+	dispatch::{DispatchResult, IsSubType}, traits::{Get, Currency, ReservableCurrency},
 	weights::{SimpleDispatchInfo, DispatchInfo},
 };
 use system::{self, ensure_root, ensure_signed};
@@ -53,10 +53,10 @@ pub trait Registrar<AccountId> {
 		info: ParaInfo,
 		code: Vec<u8>,
 		initial_head_data: Vec<u8>,
-	) -> Result;
+	) -> DispatchResult;
 
 	/// Deregister a parachain with given `id`. If `id` is not currently registered, an error is returned.
-	fn deregister_para(id: ParaId) -> Result;
+	fn deregister_para(id: ParaId) -> DispatchResult;
 }
 
 impl<T: Trait> Registrar<T::AccountId> for Module<T> {
@@ -69,7 +69,7 @@ impl<T: Trait> Registrar<T::AccountId> for Module<T> {
 		info: ParaInfo,
 		code: Vec<u8>,
 		initial_head_data: Vec<u8>,
-	) -> Result {
+	) -> DispatchResult {
 		ensure!(!Paras::exists(id), "Parachain already exists");
 		if let Scheduling::Always = info.scheduling {
 			Parachains::mutate(|parachains|
@@ -87,7 +87,7 @@ impl<T: Trait> Registrar<T::AccountId> for Module<T> {
 		Ok(())
 	}
 
-	fn deregister_para(id: ParaId) -> Result {
+	fn deregister_para(id: ParaId) -> DispatchResult {
 		let info = Paras::take(id).ok_or("Invalid id")?;
 		if let Scheduling::Always = info.scheduling {
 			Parachains::mutate(|parachains|
@@ -227,7 +227,7 @@ decl_module! {
 			info: ParaInfo,
 			code: Vec<u8>,
 			initial_head_data: Vec<u8>,
-		) -> Result {
+		) -> DispatchResult {
 			ensure_root(origin)?;
 			<Self as Registrar<T::AccountId>>::
 				register_para(id, info, code, initial_head_data)
@@ -235,7 +235,7 @@ decl_module! {
 
 		/// Deregister a parachain with given id
 		#[weight = SimpleDispatchInfo::FixedOperational(10_000)]
-		pub fn deregister_para(origin, #[compact] id: ParaId) -> Result {
+		pub fn deregister_para(origin, #[compact] id: ParaId) -> DispatchResult {
 			ensure_root(origin)?;
 			<Self as Registrar<T::AccountId>>::deregister_para(id)
 		}
@@ -540,7 +540,7 @@ impl<T: Trait + Send + Sync> SignedExtension for LimitParathreadCommits<T> where
 				let thread_count = ThreadCount::get() as usize;
 				ensure!(
 					selected_threads.len() < thread_count,
-					InvalidTransaction::ExhaustsResources.into()
+					InvalidTransaction::ExhaustsResources,
 				);
 
 				// ensure that this is not selecting a duplicate parathread ID
@@ -554,7 +554,7 @@ impl<T: Trait + Send + Sync> SignedExtension for LimitParathreadCommits<T> where
 				let e = TransactionValidityError::from(InvalidTransaction::Custom(Error::InvalidId as u8));
 				let head = <parachains::Module<T>>::parachain_head(id).ok_or(e)?;
 				let actual = T::Hashing::hash(&head);
-				ensure!(&actual == hash, InvalidTransaction::Stale.into());
+				ensure!(&actual == hash, InvalidTransaction::Stale);
 
 				// updated the selected threads.
 				selected_threads.insert(pos, (*id, collator.clone()));
@@ -635,6 +635,7 @@ mod tests {
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
+		type ModuleToIndex = ();
 	}
 
 	parameter_types! {
@@ -1335,7 +1336,7 @@ mod tests {
 					assert_noop!(
 						LimitParathreadCommits::<Test>(std::marker::PhantomData)
 							.validate(&0, &call, info, 0),
-						InvalidTransaction::ExhaustsResources.into()
+						InvalidTransaction::ExhaustsResources,
 					);
 				}
 			}

polkadot/runtime/src/slots.rs

@@ -25,7 +25,7 @@ use sp_runtime::traits::{
 use frame_support::weights::SimpleDispatchInfo;
 use codec::{Encode, Decode, Codec};
 use frame_support::{
-	decl_module, decl_storage, decl_event, ensure,
+	decl_module, decl_storage, decl_event, ensure, dispatch::DispatchResult,
 	traits::{Currency, ReservableCurrency, WithdrawReason, ExistenceRequirement, Get, Randomness},
 };
 use primitives::parachain::{
@@ -379,7 +379,7 @@ decl_module! {
 			if let IncomingParachain::Unset(ref nb) = details {
 				ensure!(nb.who == who && nb.sub == sub, "parachain not registered by origin");
 			} else {
-				return Err("already registered")
+				Err("already registered")?
 			}
 			let item = (starts, IncomingParachain::Fixed{code_hash, initial_head_data});
 			<Onboarding<T>>::insert(&para_id, item);
@@ -398,7 +398,7 @@ decl_module! {
 		/// - `para_id` is the parachain ID whose code will be elaborated.
 		/// - `code` is the preimage of the registered `code_hash` of `para_id`.
 		#[weight = SimpleDispatchInfo::FixedNormal(5_000_000)]
-		pub fn elaborate_deploy_data(_origin, #[compact] para_id: ParaId, code: Vec<u8>) {
+		pub fn elaborate_deploy_data(_origin, #[compact] para_id: ParaId, code: Vec<u8>) -> DispatchResult {
 			let (starts, details) = <Onboarding<T>>::get(&para_id)
 				.ok_or("parachain id not in onboarding")?;
 			if let IncomingParachain::Fixed{code_hash, initial_head_data} = details {
@@ -414,8 +414,10 @@ decl_module! {
 					let _ = T::Parachains::
 						register_para(para_id, PARACHAIN_INFO, code, initial_head_data);
 				}
+
+				Ok(())
 			} else {
-				return Err("deploy data not yet fixed")
+				Err("deploy data not yet fixed".into())
 			}
 		}
 	}
@@ -680,7 +682,7 @@ impl<T: Trait> Module<T> {
 		first_slot: LeasePeriodOf<T>,
 		last_slot: LeasePeriodOf<T>,
 		amount: BalanceOf<T>
-	) -> Result<(), &'static str> {
+	) -> DispatchResult {
 		// Bidding on latest auction.
 		ensure!(auction_index == <AuctionCounter>::get(), "not current auction");
 		// Assume it's actually an auction (this should never fail because of above).
@@ -706,7 +708,7 @@ impl<T: Trait> Module<T> {
 						.expect("array has SLOT_RANGE_COUNT items; index never reaches that value; qed")
 					)
 				)),
-				"bidder winning non-intersecting range"
+				"bidder winning non-intersecting range",
 			);
 
 			// Ok; we are the new winner of this range - reserve the additional amount and record.
@@ -818,7 +820,7 @@ impl<T: Trait> Module<T> {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use std::{result::Result, collections::HashMap, cell::RefCell};
+	use std::{collections::HashMap, cell::RefCell};
 
 	use sp_core::H256;
 	use sp_runtime::{
@@ -860,6 +862,7 @@ mod tests {
 		type MaximumBlockLength = MaximumBlockLength;
 		type AvailableBlockRatio = AvailableBlockRatio;
 		type Version = ();
+		type ModuleToIndex = ();
 	}
 
 	parameter_types! {
@@ -899,7 +902,7 @@ mod tests {
 			_info: ParaInfo,
 			code: Vec<u8>,
 			initial_head_data: Vec<u8>
-		) -> Result<(), &'static str> {
+		) -> DispatchResult {
 			PARACHAINS.with(|p| {
 				if p.borrow().contains_key(&id.into()) {
 					panic!("ID already exists")
@@ -908,7 +911,7 @@ mod tests {
 				Ok(())
 			})
 		}
-		fn deregister_para(id: ParaId) -> Result<(), &'static str> {
+		fn deregister_para(id: ParaId) -> DispatchResult {
 			PARACHAINS.with(|p| {
 				if !p.borrow().contains_key(&id.into()) {
 					panic!("ID doesn't exist")