feat: update global farm

integration-tests/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "runtime-integration-tests"
-version = "1.23.3"
+version = "1.23.4"
 description = "Integration tests"
 authors = ["GalacticCouncil"]
 edition = "2021"

integration-tests/src/omnipool_liquidity_mining.rs

@@ -1238,6 +1238,134 @@ fn liquidity_mining_should_work_when_farm_distribute_bonds() {
 	});
 }
 
+#[test]
+fn claim_rewards_should_work_when_farm_is_updated() {
+	TestNet::reset();
+
+	Hydra::execute_with(|| {
+		let global_farm_1_id = 1;
+		let yield_farm_1_id = 2;
+		let yield_farm_2_id = 3;
+
+		//Arrange
+		init_omnipool();
+		seed_lm_pot();
+		//necessary for oracle to have a price.
+		do_lrna_hdx_trade();
+
+		//NOTE: necessary to get oracle price.
+		hydradx_run_to_block(100);
+		set_relaychain_block_number(100);
+		create_global_farm(None, None);
+
+		set_relaychain_block_number(200);
+		create_yield_farm(global_farm_1_id, ETH);
+		create_yield_farm(global_farm_1_id, DOT);
+
+		set_relaychain_block_number(300);
+
+		assert_ok!(hydradx_runtime::Currencies::update_balance(
+			hydradx_runtime::RuntimeOrigin::root(),
+			CHARLIE.into(),
+			ETH,
+			10_000 * UNITS as i128,
+		));
+
+		let position_id = omnipool_add_liquidity(CHARLIE.into(), ETH, 1_000 * UNITS);
+		assert_nft_owner!(
+			hydradx_runtime::OmnipoolCollectionId::get(),
+			position_id,
+			CHARLIE.into()
+		);
+
+		set_relaychain_block_number(400);
+		let deposit_id = 1;
+		assert_ok!(hydradx_runtime::OmnipoolLiquidityMining::deposit_shares(
+			RuntimeOrigin::signed(CHARLIE.into()),
+			global_farm_1_id,
+			yield_farm_1_id,
+			position_id
+		));
+
+		set_relaychain_block_number(500);
+		assert_ok!(hydradx_runtime::Currencies::update_balance(
+			hydradx_runtime::RuntimeOrigin::root(),
+			CHARLIE.into(),
+			DOT,
+			10_000 * UNITS as i128,
+		));
+
+		let position_id = omnipool_add_liquidity(CHARLIE.into(), DOT, 1 * UNITS);
+		assert_nft_owner!(
+			hydradx_runtime::OmnipoolCollectionId::get(),
+			position_id,
+			CHARLIE.into()
+		);
+
+		set_relaychain_block_number(550);
+		let deposit_id_2 = 2;
+		assert_ok!(hydradx_runtime::OmnipoolLiquidityMining::deposit_shares(
+			RuntimeOrigin::signed(CHARLIE.into()),
+			global_farm_1_id,
+			yield_farm_2_id,
+			position_id
+		));
+
+		//Act - update farm
+		let planned_yielding_periods: BlockNumber = 2_000_000_u32;
+		let yield_per_period = Perquintill::from_parts(550_776_255_707);
+		let min_deposit = 5_000;
+		assert_ok!(hydradx_runtime::OmnipoolLiquidityMining::update_global_farm(
+			RuntimeOrigin::root(),
+			global_farm_1_id,
+			planned_yielding_periods,
+			yield_per_period,
+			min_deposit
+		));
+		//Assert
+		let g_farm =
+			warehouse_liquidity_mining::GlobalFarm::<hydradx_runtime::Runtime, Instance1>::get(global_farm_1_id)
+				.unwrap();
+		assert_eq!(g_farm.planned_yielding_periods, planned_yielding_periods);
+		assert_eq!(g_farm.yield_per_period, yield_per_period);
+		assert_eq!(g_farm.min_deposit, min_deposit);
+
+		let charlie_hdx_balance_0 = hydradx_runtime::Currencies::free_balance(HDX, &CHARLIE.into());
+		//Act 1 - claim rewards for 2-nd yield-farm-entry
+		set_relaychain_block_number(600);
+		assert_ok!(hydradx_runtime::OmnipoolLiquidityMining::claim_rewards(
+			RuntimeOrigin::signed(CHARLIE.into()),
+			deposit_id_2,
+			yield_farm_2_id
+		));
+
+		//Assert
+		//NOTE: can't assert state in the deposit because fields are private
+		let charlie_new_hdx_balance_after_first_claim = hydradx_runtime::Currencies::free_balance(HDX, &CHARLIE.into());
+		assert!(
+			charlie_new_hdx_balance_after_first_claim > charlie_hdx_balance_0,
+			"Charlie's balance should be increased"
+		);
+		assert_eq!(charlie_new_hdx_balance_after_first_claim, 1000030740535405);
+
+		//Act 2 - claim rewards for differnt yield-farm-entry in the same period should work.
+		assert_ok!(hydradx_runtime::OmnipoolLiquidityMining::claim_rewards(
+			RuntimeOrigin::signed(CHARLIE.into()),
+			deposit_id,
+			yield_farm_1_id
+		));
+
+		//Assert
+		//NOTE: can't assert state in the deposit because fields are private
+		let charlie_new_hdx_balance_after_2nd_claim = hydradx_runtime::Currencies::free_balance(HDX, &CHARLIE.into());
+		assert!(
+			charlie_new_hdx_balance_after_2nd_claim > charlie_new_hdx_balance_after_first_claim,
+			"Charlie's balance should be increased"
+		);
+		assert_eq!(charlie_new_hdx_balance_after_2nd_claim, 1000031130694537);
+	});
+}
+
 pub fn expect_reward_claimed_events(e: Vec<RuntimeEvent>) {
 	let last_events = test_utils::last_events::<hydradx_runtime::RuntimeEvent, hydradx_runtime::Runtime>(10);
 

pallets/liquidity-mining/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pallet-liquidity-mining"
-version = "4.3.4"
+version = "4.4.0"
 description = "Liquidity mining"
 authors = ["GalacticCouncil"]
 edition = "2021"

pallets/liquidity-mining/src/lib.rs

@@ -569,6 +569,57 @@ impl<T: Config<I>, I: 'static> Pallet<T, I> {
 		})
 	}
 
+	/// Update global farm's main fields.
+	///
+	///
+	/// Parameters:
+	/// - `global_farm_id`: global farm id.
+	/// - `planned_yielding_periods`: planned number of periods to distribute `total_rewards`.
+	/// - `yield_per_period`: percentage return on `reward_currency` of all pools.
+	/// - `min_deposit`: minimum amount of LP shares to be deposited into liquidity mining by each user.
+	fn update_global_farm(
+		global_farm_id: GlobalFarmId,
+		planned_yielding_periods: PeriodOf<T>,
+		yield_per_period: Perquintill,
+		min_deposit: Balance,
+	) -> Result<(), DispatchError> {
+		ensure!(min_deposit.ge(&MIN_DEPOSIT), Error::<T, I>::InvalidMinDeposit);
+		ensure!(
+			planned_yielding_periods >= T::MinPlannedYieldingPeriods::get(),
+			Error::<T, I>::InvalidPlannedYieldingPeriods
+		);
+		ensure!(!yield_per_period.is_zero(), Error::<T, I>::InvalidYieldPerPeriod);
+
+		<GlobalFarm<T, I>>::try_mutate(global_farm_id, |maybe_global_farm| {
+			let global_farm = maybe_global_farm.as_mut().ok_or(Error::<T, I>::GlobalFarmNotFound)?;
+
+			ensure!(global_farm.state.is_active(), Error::<T, I>::GlobalFarmNotFound);
+
+			let current_period = Self::get_current_period(global_farm.blocks_per_period)?;
+			Self::sync_global_farm(global_farm, current_period)?;
+
+			//Calculate the new max reward period
+			let global_farm_account = Self::farm_account_id(global_farm.id)?;
+			let total_rewards = T::MultiCurrency::free_balance(global_farm.reward_currency, &global_farm_account);
+			let planned_periods =
+				TryInto::<u128>::try_into(planned_yielding_periods).map_err(|_| ArithmeticError::Overflow)?;
+			let new_max_reward_period = total_rewards
+				.checked_div(planned_periods)
+				.ok_or(Error::<T, I>::InvalidPlannedYieldingPeriods)?;
+			ensure!(
+				!new_max_reward_period.is_zero(),
+				Error::<T, I>::InvalidPlannedYieldingPeriods
+			);
+
+			global_farm.planned_yielding_periods = planned_yielding_periods;
+			global_farm.yield_per_period = yield_per_period;
+			global_farm.min_deposit = min_deposit;
+			global_farm.max_reward_per_period = new_max_reward_period;
+
+			Ok(())
+		})
+	}
+
 	/// Terminate existing liquidity mining program. Undistributed rewards are transferred to
 	/// owner(`who`).
 	///
@@ -1816,6 +1867,15 @@ impl<T: Config<I>, I: 'static> hydradx_traits::liquidity_mining::Mutate<T::Accou
 		Self::update_global_farm_price_adjustment(who, global_farm_id, price_adjustment)
 	}
 
+	fn update_global_farm(
+		global_farm_id: GlobalFarmId,
+		planned_yielding_periods: Self::Period,
+		yield_per_period: Perquintill,
+		min_deposit: Self::Balance,
+	) -> Result<(), Self::Error> {
+		Self::update_global_farm(global_farm_id, planned_yielding_periods, yield_per_period, min_deposit)
+	}
+
 	fn terminate_global_farm(
 		who: T::AccountId,
 		global_farm_id: u32,

pallets/liquidity-mining/src/tests/claim_rewards.rs

@@ -1263,3 +1263,36 @@ fn claim_rewards_should_claim_correct_amount_when_yield_was_resumed_multiple_tim
 		});
 	});
 }
+
+#[test]
+fn claim_rewards_should_work_when_global_farm_was_updated() {
+	predefined_test_ext_with_deposits().execute_with(|| {
+		let _ = with_transaction(|| {
+			//Arrange
+			let planned_yielding_periods: BlockNumber = 1_000u64;
+			let yield_per_period = Perquintill::from_percent(20);
+			let min_deposit = 20_000;
+
+			set_block_number(100_000);
+
+			//Act
+			assert_ok!(LiquidityMining::update_global_farm(
+				GC_FARM,
+				planned_yielding_periods,
+				yield_per_period,
+				min_deposit,
+			));
+
+			set_block_number(1_000_000);
+
+			//Assert
+			assert_eq!(
+				LiquidityMining::claim_rewards(ALICE, PREDEFINED_DEPOSIT_IDS[0], GC_BSX_TKN1_YIELD_FARM_ID, false)
+					.unwrap(),
+				(GC_FARM, BSX, 28495477087879389002, 142022912120610998)
+			);
+
+			TransactionOutcome::Commit(DispatchResult::Ok(()))
+		});
+	});
+}