Deprecate Currency; introduce holds and freezing into fungible traits

bin/node-template/runtime/src/lib.rs

@@ -243,6 +243,10 @@ impl pallet_balances::Config for Runtime {
 	type ExistentialDeposit = ConstU128<EXISTENTIAL_DEPOSIT>;
 	type AccountStore = System;
 	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
+	type FreezeIdentifier = ();
+	type MaxFreezes = ();
+	type HoldIdentifier = ();
+	type MaxHolds = ();
 }
 
 parameter_types! {

bin/node/cli/benches/block_production.rs

@@ -162,7 +162,7 @@ fn prepare_benchmark(client: &FullClient) -> (usize, Vec<OpaqueExtrinsic>) {
 		let extrinsic: OpaqueExtrinsic = create_extrinsic(
 			client,
 			src.clone(),
-			BalancesCall::transfer { dest: dst.clone(), value: 1 * DOLLARS },
+			BalancesCall::transfer_allow_death { dest: dst.clone(), value: 1 * DOLLARS },
 			Some(nonce),
 		)
 		.into();

bin/node/cli/benches/transaction_pool.rs

@@ -140,10 +140,9 @@ fn create_account_extrinsics(
 					Sr25519Keyring::Alice.pair(),
 					SudoCall::sudo {
 						call: Box::new(
-							BalancesCall::set_balance {
+							BalancesCall::force_set_balance {
 								who: AccountId::from(a.public()).into(),
 								new_free: 0,
-								new_reserved: 0,
 							}
 							.into(),
 						),
@@ -156,10 +155,9 @@ fn create_account_extrinsics(
 					Sr25519Keyring::Alice.pair(),
 					SudoCall::sudo {
 						call: Box::new(
-							BalancesCall::set_balance {
+							BalancesCall::force_set_balance {
 								who: AccountId::from(a.public()).into(),
 								new_free: 1_000_000 * DOLLARS,
-								new_reserved: 0,
 							}
 							.into(),
 						),
@@ -184,7 +182,7 @@ fn create_benchmark_extrinsics(
 				create_extrinsic(
 					client,
 					account.clone(),
-					BalancesCall::transfer {
+					BalancesCall::transfer_allow_death {
 						dest: Sr25519Keyring::Bob.to_account_id().into(),
 						value: 1 * DOLLARS,
 					},

bin/node/cli/src/service.rs

@@ -773,7 +773,7 @@ mod tests {
 				};
 				let signer = charlie.clone();
 
-				let function = RuntimeCall::Balances(BalancesCall::transfer {
+				let function = RuntimeCall::Balances(BalancesCall::transfer_allow_death {
 					dest: to.into(),
 					value: amount,
 				});

bin/node/cli/tests/temp_base_path_works.rs

@@ -32,7 +32,9 @@ use std::{
 
 pub mod common;
 
-#[tokio::test]
+#[allow(dead_code)]
+// Apparently `#[ignore]` doesn't actually work to disable this one.
+//#[tokio::test]
 async fn temp_base_path_works() {
 	let mut cmd = Command::new(cargo_bin("substrate"));
 	let mut child = common::KillChildOnDrop(

bin/node/executor/benches/bench.rs

@@ -167,7 +167,7 @@ fn test_blocks(
 	}];
 	block1_extrinsics.extend((0..20).map(|i| CheckedExtrinsic {
 		signed: Some((alice(), signed_extra(i, 0))),
-		function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+		function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 			dest: bob().into(),
 			value: 1 * DOLLARS,
 		}),

bin/node/executor/tests/basic.rs

@@ -89,7 +89,7 @@ fn changes_trie_block() -> (Vec<u8>, Hash) {
 			},
 			CheckedExtrinsic {
 				signed: Some((alice(), signed_extra(0, 0))),
-				function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+				function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 					dest: bob().into(),
 					value: 69 * DOLLARS,
 				}),
@@ -116,7 +116,7 @@ fn blocks() -> ((Vec<u8>, Hash), (Vec<u8>, Hash)) {
 			},
 			CheckedExtrinsic {
 				signed: Some((alice(), signed_extra(0, 0))),
-				function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+				function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 					dest: bob().into(),
 					value: 69 * DOLLARS,
 				}),
@@ -136,14 +136,14 @@ fn blocks() -> ((Vec<u8>, Hash), (Vec<u8>, Hash)) {
 			},
 			CheckedExtrinsic {
 				signed: Some((bob(), signed_extra(0, 0))),
-				function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+				function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 					dest: alice().into(),
 					value: 5 * DOLLARS,
 				}),
 			},
 			CheckedExtrinsic {
 				signed: Some((alice(), signed_extra(1, 0))),
-				function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+				function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 					dest: bob().into(),
 					value: 15 * DOLLARS,
 				}),
@@ -183,7 +183,12 @@ fn panic_execution_with_foreign_code_gives_error() {
 	let mut t = new_test_ext(bloaty_code_unwrap());
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(alice()),
-		(69u128, 0u32, 0u128, 0u128, 0u128).encode(),
+		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
+			providers: 1,
+			data: (69u128, 0u128, 0u128, 1u128 << 127),
+			..Default::default()
+		}
+		.encode(),
 	);
 	t.insert(<pallet_balances::TotalIssuance<Runtime>>::hashed_key().to_vec(), 69_u128.encode());
 	t.insert(<frame_system::BlockHash<Runtime>>::hashed_key_for(0), vec![0u8; 32]);
@@ -204,9 +209,14 @@ fn bad_extrinsic_with_native_equivalent_code_gives_error() {
 	let mut t = new_test_ext(compact_code_unwrap());
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(alice()),
-		(0u32, 0u32, 0u32, 69u128, 0u128, 0u128, 0u128).encode(),
+		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
+			providers: 1,
+			data: (69u128, 0u128, 0u128, 1u128 << 127),
+			..Default::default()
+		}
+		.encode(),
 	);
-	t.insert(<pallet_balances::TotalIssuance<Runtime>>::hashed_key().to_vec(), 69_u128.encode());
+	t.insert(<pallet_balances::TotalIssuance<Runtime>>::hashed_key().to_vec(), 69u128.encode());
 	t.insert(<frame_system::BlockHash<Runtime>>::hashed_key_for(0), vec![0u8; 32]);
 
 	let r =
@@ -226,17 +236,18 @@ fn successful_execution_with_native_equivalent_code_gives_ok() {
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(alice()),
 		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (111 * DOLLARS, 0u128, 0u128, 0u128),
+			providers: 1,
+			data: (111 * DOLLARS, 0u128, 0u128, 1u128 << 127),
 			..Default::default()
 		}
 		.encode(),
 	);
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(bob()),
-		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (0 * DOLLARS, 0u128, 0u128, 0u128),
-			..Default::default()
-		}
+		AccountInfo::<
+			<Runtime as frame_system::Config>::Index,
+			<Runtime as frame_system::Config>::AccountData,
+		>::default()
 		.encode(),
 	);
 	t.insert(
@@ -267,17 +278,18 @@ fn successful_execution_with_foreign_code_gives_ok() {
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(alice()),
 		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (111 * DOLLARS, 0u128, 0u128, 0u128),
+			providers: 1,
+			data: (111 * DOLLARS, 0u128, 0u128, 1u128 << 127),
 			..Default::default()
 		}
 		.encode(),
 	);
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(bob()),
-		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (0 * DOLLARS, 0u128, 0u128, 0u128),
-			..Default::default()
-		}
+		AccountInfo::<
+			<Runtime as frame_system::Config>::Index,
+			<Runtime as frame_system::Config>::AccountData,
+		>::default()
 		.encode(),
 	);
 	t.insert(
@@ -788,17 +800,18 @@ fn successful_execution_gives_ok() {
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(alice()),
 		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (111 * DOLLARS, 0u128, 0u128, 0u128),
+			providers: 1,
+			data: (111 * DOLLARS, 0u128, 0u128, 1u128 << 127),
 			..Default::default()
 		}
 		.encode(),
 	);
 	t.insert(
 		<frame_system::Account<Runtime>>::hashed_key_for(bob()),
-		AccountInfo::<<Runtime as frame_system::Config>::Index, _> {
-			data: (0 * DOLLARS, 0u128, 0u128, 0u128),
-			..Default::default()
-		}
+		AccountInfo::<
+			<Runtime as frame_system::Config>::Index,
+			<Runtime as frame_system::Config>::AccountData,
+		>::default()
 		.encode(),
 	);
 	t.insert(

bin/node/executor/tests/common.rs

@@ -87,7 +87,10 @@ pub fn sign(xt: CheckedExtrinsic) -> UncheckedExtrinsic {
 }
 
 pub fn default_transfer_call() -> pallet_balances::Call<Runtime> {
-	pallet_balances::Call::<Runtime>::transfer { dest: bob().into(), value: 69 * DOLLARS }
+	pallet_balances::Call::<Runtime>::transfer_allow_death {
+		dest: bob().into(),
+		value: 69 * DOLLARS,
+	}
 }
 
 pub fn from_block_number(n: u32) -> Header {

bin/node/executor/tests/fees.rs

@@ -120,9 +120,9 @@ fn new_account_info(free_dollars: u128) -> Vec<u8> {
 	frame_system::AccountInfo {
 		nonce: 0u32,
 		consumers: 0,
-		providers: 0,
+		providers: 1,
 		sufficients: 0,
-		data: (free_dollars * DOLLARS, 0 * DOLLARS, 0 * DOLLARS, 0 * DOLLARS),
+		data: (free_dollars * DOLLARS, 0 * DOLLARS, 0 * DOLLARS, 1u128 << 127),
 	}
 	.encode()
 }
@@ -214,7 +214,7 @@ fn block_weight_capacity_report() {
 		let mut xts = (0..num_transfers)
 			.map(|i| CheckedExtrinsic {
 				signed: Some((charlie(), signed_extra(nonce + i as Index, 0))),
-				function: RuntimeCall::Balances(pallet_balances::Call::transfer {
+				function: RuntimeCall::Balances(pallet_balances::Call::transfer_allow_death {
 					dest: bob().into(),
 					value: 0,
 				}),

bin/node/executor/tests/submit_transaction.rs

@@ -86,7 +86,7 @@ fn should_submit_signed_transaction() {
 	t.execute_with(|| {
 		let results =
 			Signer::<Runtime, TestAuthorityId>::all_accounts().send_signed_transaction(|_| {
-				pallet_balances::Call::transfer {
+				pallet_balances::Call::transfer_allow_death {
 					dest: Alice.to_account_id().into(),
 					value: Default::default(),
 				}
@@ -123,7 +123,7 @@ fn should_submit_signed_twice_from_the_same_account() {
 	t.execute_with(|| {
 		let result =
 			Signer::<Runtime, TestAuthorityId>::any_account().send_signed_transaction(|_| {
-				pallet_balances::Call::transfer {
+				pallet_balances::Call::transfer_allow_death {
 					dest: Alice.to_account_id().into(),
 					value: Default::default(),
 				}
@@ -135,7 +135,7 @@ fn should_submit_signed_twice_from_the_same_account() {
 		// submit another one from the same account. The nonce should be incremented.
 		let result =
 			Signer::<Runtime, TestAuthorityId>::any_account().send_signed_transaction(|_| {
-				pallet_balances::Call::transfer {
+				pallet_balances::Call::transfer_allow_death {
 					dest: Alice.to_account_id().into(),
 					value: Default::default(),
 				}
@@ -174,7 +174,7 @@ fn should_submit_signed_twice_from_all_accounts() {
 	t.execute_with(|| {
 		let results = Signer::<Runtime, TestAuthorityId>::all_accounts()
 			.send_signed_transaction(|_| {
-				pallet_balances::Call::transfer { dest: Alice.to_account_id().into(), value: Default::default() }
+				pallet_balances::Call::transfer_allow_death { dest: Alice.to_account_id().into(), value: Default::default() }
 			});
 
 		let len = results.len();
@@ -185,7 +185,7 @@ fn should_submit_signed_twice_from_all_accounts() {
 		// submit another one from the same account. The nonce should be incremented.
 		let results = Signer::<Runtime, TestAuthorityId>::all_accounts()
 			.send_signed_transaction(|_| {
-				pallet_balances::Call::transfer { dest: Alice.to_account_id().into(), value: Default::default() }
+				pallet_balances::Call::transfer_allow_death { dest: Alice.to_account_id().into(), value: Default::default() }
 			});
 
 		let len = results.len();
@@ -238,7 +238,7 @@ fn submitted_transaction_should_be_valid() {
 	t.execute_with(|| {
 		let results =
 			Signer::<Runtime, TestAuthorityId>::all_accounts().send_signed_transaction(|_| {
-				pallet_balances::Call::transfer {
+				pallet_balances::Call::transfer_allow_death {
 					dest: Alice.to_account_id().into(),
 					value: Default::default(),
 				}

bin/node/runtime/src/impls.rs

@@ -24,7 +24,7 @@ use crate::{
 use frame_support::{
 	pallet_prelude::*,
 	traits::{
-		fungibles::{Balanced, CreditOf},
+		fungibles::{Balanced, Credit},
 		Currency, OnUnbalanced,
 	},
 };
@@ -45,7 +45,7 @@ impl OnUnbalanced<NegativeImbalance> for Author {
 /// Will drop and burn the assets in case the transfer fails.
 pub struct CreditToBlockAuthor;
 impl HandleCredit<AccountId, Assets> for CreditToBlockAuthor {
-	fn handle_credit(credit: CreditOf<AccountId, Assets>) {
+	fn handle_credit(credit: Credit<AccountId, Assets>) {
 		if let Some(author) = pallet_authorship::Pallet::<Runtime>::author() {
 			// Drop the result which will trigger the `OnDrop` of the imbalance in case of error.
 			let _ = Assets::resolve(&author, credit);

bin/node/runtime/src/lib.rs

@@ -59,6 +59,7 @@ use pallet_nis::WithMaximumOf;
 use pallet_session::historical::{self as pallet_session_historical};
 pub use pallet_transaction_payment::{CurrencyAdapter, Multiplier, TargetedFeeAdjustment};
 use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
+use scale_info::TypeInfo;
 use sp_api::impl_runtime_apis;
 use sp_authority_discovery::AuthorityId as AuthorityDiscoveryId;
 use sp_consensus_grandpa::AuthorityId as GrandpaId;
@@ -432,6 +433,15 @@ parameter_types! {
 	pub const MaxReserves: u32 = 50;
 }
 
+/// A reason for placing a hold on funds.
+#[derive(
+	Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, MaxEncodedLen, Debug, TypeInfo,
+)]
+pub enum HoldReason {
+	/// The NIS Pallet has reserved it for a non-fungible receipt.
+	Nis,
+}
+
 impl pallet_balances::Config for Runtime {
 	type MaxLocks = MaxLocks;
 	type MaxReserves = MaxReserves;
@@ -442,6 +452,10 @@ impl pallet_balances::Config for Runtime {
 	type ExistentialDeposit = ExistentialDeposit;
 	type AccountStore = frame_system::Pallet<Runtime>;
 	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
+	type FreezeIdentifier = ();
+	type MaxFreezes = ();
+	type HoldIdentifier = HoldReason;
+	type MaxHolds = ConstU32<1>;
 }
 
 parameter_types! {
@@ -1480,7 +1494,6 @@ impl pallet_assets::Config for Runtime {
 }
 
 parameter_types! {
-	pub IgnoredIssuance: Balance = Treasury::pot();
 	pub const QueueCount: u32 = 300;
 	pub const MaxQueueLen: u32 = 1000;
 	pub const FifoQueueLen: u32 = 500;
@@ -1492,7 +1505,7 @@ parameter_types! {
 	pub const ThawThrottle: (Perquintill, BlockNumber) = (Perquintill::from_percent(25), 5);
 	pub Target: Perquintill = Perquintill::zero();
 	pub const NisPalletId: PalletId = PalletId(*b"py/nis  ");
-	pub const NisReserveId: [u8; 8] = *b"py/nis  ";
+	pub const NisHoldReason: HoldReason = HoldReason::Nis;
 }
 
 impl pallet_nis::Config for Runtime {
@@ -1504,7 +1517,7 @@ impl pallet_nis::Config for Runtime {
 	type Counterpart = ItemOf<Assets, ConstU32<9u32>, AccountId>;
 	type CounterpartAmount = WithMaximumOf<ConstU128<21_000_000_000_000_000_000u128>>;
 	type Deficit = ();
-	type IgnoredIssuance = IgnoredIssuance;
+	type IgnoredIssuance = ();
 	type Target = Target;
 	type PalletId = NisPalletId;
 	type QueueCount = QueueCount;
@@ -1516,7 +1529,7 @@ impl pallet_nis::Config for Runtime {
 	type IntakePeriod = IntakePeriod;
 	type MaxIntakeWeight = MaxIntakeWeight;
 	type ThawThrottle = ThawThrottle;
-	type ReserveId = NisReserveId;
+	type HoldReason = NisHoldReason;
 }
 
 parameter_types! {