treasury pallet: remove unused config parameters (paritytech#4831)

Remove unused config parameters `ApproveOrigin` and `OnSlash` from the
treasury pallet. Add `OnSlash` config parameter to the bounties and tips
pallets.

part of paritytech#3800

cumulus/parachains/runtimes/collectives/collectives-westend/src/fellowship/mod.rs

@@ -30,7 +30,7 @@ use frame_support::{
 	parameter_types,
 	traits::{
 		tokens::UnityOrOuterConversion, EitherOf, EitherOfDiverse, FromContains, MapSuccess,
-		NeverEnsureOrigin, OriginTrait, TryWithMorphedArg,
+		OriginTrait, TryWithMorphedArg,
 	},
 	PalletId,
 };
@@ -284,14 +284,6 @@ pub type FellowshipTreasuryPaymaster = PayOverXcm<
 pub type FellowshipTreasuryInstance = pallet_treasury::Instance1;
 
 impl pallet_treasury::Config<FellowshipTreasuryInstance> for Runtime {
-	// The creation of proposals via the treasury pallet is deprecated and should not be utilized.
-	// Instead, public or fellowship referenda should be used to propose and command the treasury
-	// spend or spend_local dispatchables. The parameters below have been configured accordingly to
-	// discourage its use.
-	// TODO: replace with `NeverEnsure` once polkadot-sdk 1.5 is released.
-	type ApproveOrigin = NeverEnsureOrigin<()>;
-	type OnSlash = ();
-
 	type WeightInfo = weights::pallet_treasury::WeightInfo<Runtime>;
 	type PalletId = FellowshipTreasuryPalletId;
 	type Currency = Balances;

polkadot/runtime/common/src/impls.rs

@@ -328,10 +328,8 @@ mod tests {
 
 	impl pallet_treasury::Config for Test {
 		type Currency = pallet_balances::Pallet<Test>;
-		type ApproveOrigin = frame_system::EnsureRoot<AccountId>;
 		type RejectOrigin = frame_system::EnsureRoot<AccountId>;
 		type RuntimeEvent = RuntimeEvent;
-		type OnSlash = ();
 		type SpendPeriod = ();
 		type Burn = ();
 		type BurnDestination = ();

polkadot/runtime/rococo/src/lib.rs

@@ -498,10 +498,8 @@ parameter_types! {
 impl pallet_treasury::Config for Runtime {
 	type PalletId = TreasuryPalletId;
 	type Currency = Balances;
-	type ApproveOrigin = EitherOfDiverse<EnsureRoot<AccountId>, Treasurer>;
 	type RejectOrigin = EitherOfDiverse<EnsureRoot<AccountId>, Treasurer>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = Treasury;
 	type SpendPeriod = SpendPeriod;
 	type Burn = Burn;
 	type BurnDestination = Society;
@@ -560,6 +558,7 @@ impl pallet_bounties::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type MaximumReasonLength = MaximumReasonLength;
 	type WeightInfo = weights::pallet_bounties::WeightInfo<Runtime>;
+	type OnSlash = Treasury;
 }
 
 parameter_types! {

polkadot/runtime/westend/src/lib.rs

@@ -683,10 +683,8 @@ parameter_types! {
 impl pallet_treasury::Config for Runtime {
 	type PalletId = TreasuryPalletId;
 	type Currency = Balances;
-	type ApproveOrigin = EitherOfDiverse<EnsureRoot<AccountId>, Treasurer>;
 	type RejectOrigin = EitherOfDiverse<EnsureRoot<AccountId>, Treasurer>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = Treasury;
 	type SpendPeriod = SpendPeriod;
 	type Burn = Burn;
 	type BurnDestination = ();

prdoc/pr_4831.prdoc

@@ -0,0 +1,25 @@
+title: "treasury pallet: - remove unused config parameters"
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      Remove unused config parameters `ApproveOrigin` and `OnSlash` from the treasury pallet.
+      Add `OnSlash` config parameter to the bounties and tips pallets. 
+
+crates:
+  - name: pallet-treasury
+    bump: major
+  - name: pallet-bounties
+    bump: major
+  - name: pallet-tips
+    bump: major
+  - name: collectives-westend-runtime
+    bump: patch
+  - name: polkadot-runtime-common
+    bump: patch
+  - name: rococo-runtime
+    bump: patch
+  - name: westend-runtime
+    bump: patch
+  - name: kitchensink-runtime
+    bump: patch

substrate/bin/node/runtime/src/lib.rs

@@ -1229,16 +1229,11 @@ parameter_types! {
 impl pallet_treasury::Config for Runtime {
 	type PalletId = TreasuryPalletId;
 	type Currency = Balances;
-	type ApproveOrigin = EitherOfDiverse<
-		EnsureRoot<AccountId>,
-		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 3, 5>,
-	>;
 	type RejectOrigin = EitherOfDiverse<
 		EnsureRoot<AccountId>,
 		pallet_collective::EnsureProportionMoreThan<AccountId, CouncilCollective, 1, 2>,
 	>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = SpendPeriod;
 	type Burn = Burn;
 	type BurnDestination = ();
@@ -1292,6 +1287,7 @@ impl pallet_bounties::Config for Runtime {
 	type MaximumReasonLength = MaximumReasonLength;
 	type WeightInfo = pallet_bounties::weights::SubstrateWeight<Runtime>;
 	type ChildBountyManager = ChildBounties;
+	type OnSlash = Treasury;
 }
 
 parameter_types! {
@@ -1336,6 +1332,7 @@ impl pallet_tips::Config for Runtime {
 	type TipReportDepositBase = TipReportDepositBase;
 	type MaxTipAmount = ConstU128<{ 500 * DOLLARS }>;
 	type WeightInfo = pallet_tips::weights::SubstrateWeight<Runtime>;
+	type OnSlash = Treasury;
 }
 
 parameter_types! {

substrate/frame/bounties/src/benchmarking.rs

@@ -177,7 +177,7 @@ benchmarks_instance_pallet! {
 		Bounties::<T, I>::propose_bounty(RawOrigin::Signed(caller).into(), value, reason)?;
 		let bounty_id = BountyCount::<T, I>::get() - 1;
 		let approve_origin =
-			T::ApproveOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
+			T::RejectOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
 	}: close_bounty<T::RuntimeOrigin>(approve_origin, bounty_id)
 
 	close_bounty_active {
@@ -186,7 +186,7 @@ benchmarks_instance_pallet! {
 		Treasury::<T, I>::on_initialize(BlockNumberFor::<T>::zero());
 		let bounty_id = BountyCount::<T, I>::get() - 1;
 		let approve_origin =
-			T::ApproveOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
+			T::RejectOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
 	}: close_bounty<T::RuntimeOrigin>(approve_origin, bounty_id)
 	verify {
 		assert_last_event::<T, I>(Event::BountyCanceled { index: bounty_id }.into())

substrate/frame/bounties/src/lib.rs

@@ -245,6 +245,9 @@ pub mod pallet {
 
 		/// The child bounty manager.
 		type ChildBountyManager: ChildBountyManager<BalanceOf<Self, I>>;
+
+		/// Handler for the unbalanced decrease when slashing for a rejected bounty.
+		type OnSlash: OnUnbalanced<pallet_treasury::NegativeImbalanceOf<Self, I>>;
 	}
 
 	#[pallet::error]

substrate/frame/bounties/src/tests.rs

@@ -83,10 +83,8 @@ parameter_types! {
 impl pallet_treasury::Config for Test {
 	type PalletId = TreasuryPalletId;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
@@ -107,10 +105,8 @@ impl pallet_treasury::Config for Test {
 impl pallet_treasury::Config<Instance1> for Test {
 	type PalletId = TreasuryPalletId2;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
@@ -149,6 +145,7 @@ impl Config for Test {
 	type MaximumReasonLength = ConstU32<16384>;
 	type WeightInfo = ();
 	type ChildBountyManager = ();
+	type OnSlash = ();
 }
 
 impl Config<Instance1> for Test {
@@ -164,6 +161,7 @@ impl Config<Instance1> for Test {
 	type MaximumReasonLength = ConstU32<16384>;
 	type WeightInfo = ();
 	type ChildBountyManager = ();
+	type OnSlash = ();
 }
 
 type TreasuryError = pallet_treasury::Error<Test>;

substrate/frame/child-bounties/src/tests.rs

@@ -83,10 +83,8 @@ parameter_types! {
 impl pallet_treasury::Config for Test {
 	type PalletId = TreasuryPalletId;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = ();
@@ -123,6 +121,7 @@ impl pallet_bounties::Config for Test {
 	type MaximumReasonLength = ConstU32<300>;
 	type WeightInfo = ();
 	type ChildBountyManager = ChildBounties;
+	type OnSlash = ();
 }
 impl pallet_child_bounties::Config for Test {
 	type RuntimeEvent = RuntimeEvent;

substrate/frame/tips/src/lib.rs

@@ -169,6 +169,9 @@ pub mod pallet {
 		/// update weights file when altering this method.
 		type Tippers: SortedMembers<Self::AccountId> + ContainsLengthBound;
 
+		/// Handler for the unbalanced decrease when slashing for a removed tip.
+		type OnSlash: OnUnbalanced<NegativeImbalanceOf<Self, I>>;
+
 		/// Weight information for extrinsics in this pallet.
 		type WeightInfo: WeightInfo;
 	}

substrate/frame/tips/src/tests.rs

@@ -104,10 +104,8 @@ parameter_types! {
 impl pallet_treasury::Config for Test {
 	type PalletId = TreasuryPalletId;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
@@ -128,10 +126,8 @@ impl pallet_treasury::Config for Test {
 impl pallet_treasury::Config<Instance1> for Test {
 	type PalletId = TreasuryPalletId2;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.
@@ -162,6 +158,7 @@ impl Config for Test {
 	type DataDepositPerByte = ConstU64<1>;
 	type MaxTipAmount = ConstU64<10_000_000>;
 	type RuntimeEvent = RuntimeEvent;
+	type OnSlash = ();
 	type WeightInfo = ();
 }
 
@@ -174,6 +171,7 @@ impl Config<Instance1> for Test {
 	type DataDepositPerByte = ConstU64<1>;
 	type MaxTipAmount = ConstU64<10_000_000>;
 	type RuntimeEvent = RuntimeEvent;
+	type OnSlash = ();
 	type WeightInfo = ();
 }
 

substrate/frame/treasury/src/lib.rs

@@ -205,19 +205,13 @@ pub mod pallet {
 		/// The staking balance.
 		type Currency: Currency<Self::AccountId> + ReservableCurrency<Self::AccountId>;
 
-		/// Origin from which approvals must come.
-		type ApproveOrigin: EnsureOrigin<Self::RuntimeOrigin>;
-
 		/// Origin from which rejections must come.
 		type RejectOrigin: EnsureOrigin<Self::RuntimeOrigin>;
 
 		/// The overarching event type.
 		type RuntimeEvent: From<Event<Self, I>>
 			+ IsType<<Self as frame_system::Config>::RuntimeEvent>;
 
-		/// Handler for the unbalanced decrease when slashing for a rejected proposal or bounty.
-		type OnSlash: OnUnbalanced<NegativeImbalanceOf<Self, I>>;
-
 		/// Period between successive spends.
 		#[pallet::constant]
 		type SpendPeriod: Get<BlockNumberFor<Self>>;

substrate/frame/treasury/src/tests.rs

@@ -164,10 +164,8 @@ impl<N: Get<u64>> ConversionFromAssetBalance<u64, u32, u64> for MulBy<N> {
 impl Config for Test {
 	type PalletId = TreasuryPalletId;
 	type Currency = pallet_balances::Pallet<Test>;
-	type ApproveOrigin = frame_system::EnsureRoot<u128>;
 	type RejectOrigin = frame_system::EnsureRoot<u128>;
 	type RuntimeEvent = RuntimeEvent;
-	type OnSlash = ();
 	type SpendPeriod = ConstU64<2>;
 	type Burn = Burn;
 	type BurnDestination = (); // Just gets burned.