MD 306 - add pallet treasury

Cargo.toml

@@ -98,6 +98,7 @@ pallet-staking = { git = "https://github.com/moondance-labs/polkadot-sdk", branc
 pallet-sudo = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
 pallet-timestamp = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
 pallet-transaction-payment = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
+pallet-treasury = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
 pallet-tx-pause = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
 pallet-utility = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-v1.3.0", default-features = false }
 parity-scale-codec = { version = "3.0.0", default-features = false, features = [ "derive", "max-encoded-len" ] }

node/src/chain_spec/dancebox.rs

@@ -291,6 +291,7 @@ fn testnet_genesis(
         polkadot_xcm: PolkadotXcmConfig::default(),
         transaction_payment: Default::default(),
         tx_pause: Default::default(),
+        treasury: Default::default(),
     }
 }
 

node/src/chain_spec/flashbox.rs

@@ -289,6 +289,7 @@ fn testnet_genesis(
         },
         transaction_payment: Default::default(),
         tx_pause: Default::default(),
+        treasury: Default::default(),
     }
 }
 

pallets/collator-assignment/src/tests.rs

@@ -14,9 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with Tanssi.  If not, see <http://www.gnu.org/licenses/>
 
-use dp_collator_assignment::AssignedCollators;
 use {
     crate::{mock::*, CollatorContainerChain, Event, PendingCollatorContainerChain},
+    dp_collator_assignment::AssignedCollators,
     std::collections::BTreeMap,
 };
 

pallets/collator-assignment/src/tests/assign_full.rs

@@ -14,9 +14,11 @@
 // You should have received a copy of the GNU General Public License
 // along with Tanssi.  If not, see <http://www.gnu.org/licenses/>
 
-use crate::assignment::AssignmentError;
 use {
-    crate::{assignment::Assignment, tests::Test},
+    crate::{
+        assignment::{Assignment, AssignmentError},
+        tests::Test,
+    },
     sp_std::collections::btree_map::BTreeMap,
 };
 

runtime/dancebox/Cargo.toml

@@ -60,6 +60,7 @@ pallet-sudo = { workspace = true }
 pallet-timestamp = { workspace = true }
 pallet-transaction-payment = { workspace = true }
 pallet-transaction-payment-rpc-runtime-api = { workspace = true }
+pallet-treasury = { workspace = true }
 pallet-tx-pause = { workspace = true }
 pallet-utility = { workspace = true }
 sp-api = { workspace = true }
@@ -193,6 +194,7 @@ std = [
 	"pallet-timestamp/std",
 	"pallet-transaction-payment-rpc-runtime-api/std",
 	"pallet-transaction-payment/std",
+	"pallet-treasury/std",
 	"pallet-tx-pause/std",
 	"pallet-utility/std",
 	"pallet-xcm-benchmarks?/std",
@@ -276,6 +278,7 @@ runtime-benchmarks = [
 	"pallet-staking/runtime-benchmarks",
 	"pallet-sudo/runtime-benchmarks",
 	"pallet-timestamp/runtime-benchmarks",
+	"pallet-treasury/runtime-benchmarks",
 	"pallet-tx-pause/runtime-benchmarks",
 	"pallet-utility/runtime-benchmarks",
 	"pallet-xcm-benchmarks/runtime-benchmarks",
@@ -339,6 +342,7 @@ try-runtime = [
 	"pallet-sudo/try-runtime",
 	"pallet-timestamp/try-runtime",
 	"pallet-transaction-payment/try-runtime",
+	"pallet-treasury/try-runtime",
 	"pallet-tx-pause/try-runtime",
 	"pallet-utility/try-runtime",
 	"pallet-xcm/try-runtime",

runtime/dancebox/src/lib.rs

@@ -49,9 +49,10 @@ use {
         parameter_types,
         traits::{
             fungible::{Balanced, Credit, Inspect},
+            tokens::{PayFromAccount, UnityAssetBalanceConversion},
             ConstBool, ConstU128, ConstU32, ConstU64, ConstU8, Contains, EitherOfDiverse,
-            InsideBoth, InstanceFilter, OffchainWorker, OnFinalize, OnIdle, OnInitialize,
-            OnRuntimeUpgrade, ValidatorRegistration,
+            Imbalance, InsideBoth, InstanceFilter, OffchainWorker, OnFinalize, OnIdle,
+            OnInitialize, OnRuntimeUpgrade, OnUnbalanced, ValidatorRegistration,
         },
         weights::{
             constants::{
@@ -68,6 +69,7 @@ use {
         EnsureRoot,
     },
     nimbus_primitives::NimbusId,
+    pallet_balances::NegativeImbalance,
     pallet_collator_assignment::{GetRandomnessForNextBlock, RotateCollatorsEveryNSessions},
     pallet_invulnerables::InvulnerableRewardDistribution,
     pallet_pooled_staking::traits::{IsCandidateEligible, Timer},
@@ -86,6 +88,7 @@ use {
         create_runtime_str, generic, impl_opaque_keys,
         traits::{
             AccountIdConversion, AccountIdLookup, BlakeTwo256, Block as BlockT, Hash as HashT,
+            IdentityLookup,
         },
         transaction_validity::{TransactionSource, TransactionValidity},
         AccountId32, ApplyExtrinsicResult,
@@ -412,15 +415,53 @@ impl pallet_balances::Config for Runtime {
     type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
 }
 
+pub struct DealWithFees<R>(sp_std::marker::PhantomData<R>);
+impl<R> OnUnbalanced<NegativeImbalance<R>> for DealWithFees<R>
+where
+    R: pallet_balances::Config + pallet_treasury::Config,
+    pallet_treasury::Pallet<R>: OnUnbalanced<NegativeImbalance<R>>,
+{
+    // this seems to be called for substrate-based transactions
+    fn on_unbalanceds<B>(mut fees_then_tips: impl Iterator<Item = NegativeImbalance<R>>) {
+        if let Some(fees) = fees_then_tips.next() {
+            // 80% is burned, 20% goes to the treasury
+            // Same policy applies for tips as well
+            let burn_percentage = 80;
+            let treasury_percentage = 20;
+
+            let (_, to_treasury) = fees.ration(burn_percentage, treasury_percentage);
+            // Balances pallet automatically burns dropped Negative Imbalances by decreasing total_supply accordingly
+            <pallet_treasury::Pallet<R> as OnUnbalanced<_>>::on_unbalanced(to_treasury);
+
+            // handle tip if there is one
+            if let Some(tip) = fees_then_tips.next() {
+                let (_, to_treasury) = tip.ration(burn_percentage, treasury_percentage);
+                <pallet_treasury::Pallet<R> as OnUnbalanced<_>>::on_unbalanced(to_treasury);
+            }
+        }
+    }
+
+    // this is called from pallet_evm for Ethereum-based transactions
+    // (technically, it calls on_unbalanced, which calls this when non-zero)
+    fn on_nonzero_unbalanced(amount: NegativeImbalance<R>) {
+        // 80% is burned, 20% goes to the treasury
+        let burn_percentage = 80;
+        let treasury_percentage = 20;
+
+        let (_, to_treasury) = amount.ration(burn_percentage, treasury_percentage);
+        <pallet_treasury::Pallet<R> as OnUnbalanced<_>>::on_unbalanced(to_treasury);
+    }
+}
+
 parameter_types! {
     pub const TransactionByteFee: Balance = 1;
     pub const FeeMultiplier: Multiplier = Multiplier::from_u32(1);
 }
 
 impl pallet_transaction_payment::Config for Runtime {
     type RuntimeEvent = RuntimeEvent;
-    // This will burn the fees
-    type OnChargeTransaction = CurrencyAdapter<Balances, ()>;
+    // This will burn 80% from fees & tips and deposit the remainder into the treasury
+    type OnChargeTransaction = CurrencyAdapter<Balances, DealWithFees<Runtime>>;
     type OperationalFeeMultiplier = ConstU8<5>;
     type WeightToFee = WeightToFee;
     type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
@@ -1387,6 +1428,42 @@ impl pallet_identity::Config for Runtime {
     type WeightInfo = pallet_identity::weights::SubstrateWeight<Runtime>;
 }
 
+parameter_types! {
+    pub const TreasuryId: PalletId = PalletId(*b"tns/tsry");
+    pub const ProposalBond: Permill = Permill::from_percent(5);
+    pub TreasuryAccount: AccountId = Treasury::account_id();
+}
+
+impl pallet_treasury::Config for Runtime {
+    type PalletId = TreasuryId;
+    type Currency = Balances;
+
+    type ApproveOrigin = EnsureRoot<AccountId>;
+    type RejectOrigin = EnsureRoot<AccountId>;
+    type RuntimeEvent = RuntimeEvent;
+    // If proposal gets rejected, bond goes to treasury
+    type OnSlash = Treasury;
+    type ProposalBond = ProposalBond;
+    type ProposalBondMinimum = ConstU128<{ 1 * currency::DANCE * currency::SUPPLY_FACTOR }>;
+    type SpendPeriod = ConstU32<{ 6 * DAYS }>;
+    type Burn = ();
+    type BurnDestination = ();
+    type MaxApprovals = ConstU32<100>;
+    type WeightInfo = pallet_treasury::weights::SubstrateWeight<Runtime>;
+    type SpendFunds = ();
+    type ProposalBondMaximum = ();
+    type SpendOrigin = frame_support::traits::NeverEnsureOrigin<Balance>; // Same as Polkadot
+    type AssetKind = ();
+    type Beneficiary = AccountId;
+    type BeneficiaryLookup = IdentityLookup<AccountId>;
+    type Paymaster = PayFromAccount<Balances, TreasuryAccount>;
+    // TODO: implement pallet-asset-rate to allow the treasury to spend other assets
+    type BalanceConverter = UnityAssetBalanceConversion;
+    type PayoutPeriod = ConstU32<0>;
+    #[cfg(feature = "runtime-benchmarks")]
+    type BenchmarkHelper = ();
+}
+
 // Create the runtime by composing the FRAME pallets that were previously configured.
 construct_runtime!(
     pub enum Runtime
@@ -1429,6 +1506,9 @@ construct_runtime!(
         // InflationRewards must be after Session and AuthorInherent
         InflationRewards: pallet_inflation_rewards = 35,
 
+        // Treasury stuff.
+        Treasury: pallet_treasury::{Pallet, Storage, Config<T>, Event<T>, Call} = 40,
+
         //XCM
         XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 50,
         CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 51,
@@ -1454,6 +1534,7 @@ mod benches {
         [pallet_sudo, Sudo]
         [pallet_proxy, Proxy]
         [pallet_utility, Utility]
+        [pallet_treasury, Treasury]
         [pallet_tx_pause, TxPause]
         [pallet_balances, Balances]
         [pallet_identity, Identity]

runtime/dancebox/src/xcm_config.rs

@@ -333,11 +333,12 @@ impl pallet_asset_rate::Config for Runtime {
     type BenchmarkHelper = ForeignAssetBenchmarkHelper;
 }
 
-use crate::ForeignAssets;
-use sp_runtime::{traits::CheckedDiv, FixedPointNumber};
-use staging_xcm_builder::FungiblesAdapter;
-use staging_xcm_builder::NoChecking;
-use staging_xcm_executor::traits::JustTry;
+use {
+    crate::ForeignAssets,
+    sp_runtime::{traits::CheckedDiv, FixedPointNumber},
+    staging_xcm_builder::{FungiblesAdapter, NoChecking},
+    staging_xcm_executor::traits::JustTry,
+};
 
 /// Means for transacting foreign assets from different global consensus.
 pub type ForeignFungiblesTransactor = FungiblesAdapter<

runtime/flashbox/Cargo.toml

@@ -55,6 +55,7 @@ pallet-sudo = { workspace = true }
 pallet-timestamp = { workspace = true }
 pallet-transaction-payment = { workspace = true }
 pallet-transaction-payment-rpc-runtime-api = { workspace = true }
+pallet-treasury = { workspace = true }
 pallet-tx-pause = { workspace = true }
 pallet-utility = { workspace = true }
 sp-api = { workspace = true }
@@ -160,6 +161,7 @@ std = [
 	"pallet-timestamp/std",
 	"pallet-transaction-payment-rpc-runtime-api/std",
 	"pallet-transaction-payment/std",
+	"pallet-treasury/std",
 	"pallet-tx-pause/std",
 	"pallet-utility/std",
 	"parachain-info/std",
@@ -225,6 +227,7 @@ runtime-benchmarks = [
 	"pallet-services-payment/runtime-benchmarks",
 	"pallet-sudo/runtime-benchmarks",
 	"pallet-timestamp/runtime-benchmarks",
+	"pallet-treasury/runtime-benchmarks",
 	"pallet-tx-pause/runtime-benchmarks",
 	"pallet-utility/runtime-benchmarks",
 	"polkadot-parachain-primitives/runtime-benchmarks",
@@ -266,6 +269,7 @@ try-runtime = [
 	"pallet-sudo/try-runtime",
 	"pallet-timestamp/try-runtime",
 	"pallet-transaction-payment/try-runtime",
+	"pallet-treasury/try-runtime",
 	"pallet-tx-pause/try-runtime",
 	"pallet-utility/try-runtime",
 	"parachain-info/try-runtime",