Allow non-incremental farming rewards

Author: dio-will

pallets/loans/src/lib.rs

@@ -1425,7 +1425,7 @@ impl<T: Config> Pallet<T> {
         Self::update_reward_supply_index(asset_id)?;
         Self::distribute_supplier_reward(asset_id, who)?;
 
-        let exchange_rate = Self::exchange_rate_stored(asset_id)?;
+        let exchange_rate: FixedU128 = Self::exchange_rate_stored(asset_id)?;
         let redeem_amount = Self::calc_underlying_amount(voucher_amount, exchange_rate)?;
 
         AccountDeposits::<T>::try_mutate_exists(asset_id, who, |deposits| -> DispatchResult {
@@ -1538,11 +1538,16 @@ impl<T: Config> Pallet<T> {
     ) -> DispatchResult {
         let deposits = AccountDeposits::<T>::get(asset_id, who);
         let account_earned = AccountEarned::<T>::get(asset_id, who);
-        let total_earned_prior_new = exchange_rate
-            .checked_sub(&account_earned.exchange_rate_prior)
-            .and_then(|r| r.checked_mul_int(deposits.voucher_balance))
-            .and_then(|r| r.checked_add(account_earned.total_earned_prior))
-            .ok_or(ArithmeticError::Overflow)?;
+
+        let total_earned_prior_new = if exchange_rate >= account_earned.exchange_rate_prior {
+            exchange_rate
+                .checked_sub(&account_earned.exchange_rate_prior)
+                .and_then(|delta| delta.checked_mul_int(deposits.voucher_balance))
+                .and_then(|result| result.checked_add(account_earned.total_earned_prior))
+                .ok_or(ArithmeticError::Overflow)?
+        } else {
+            account_earned.total_earned_prior
+        };
 
         AccountEarned::<T>::insert(
             asset_id,

runtime/heiko/src/lib.rs

@@ -180,7 +180,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("heiko"),
     impl_name: create_runtime_str!("heiko"),
     authoring_version: 1,
-    spec_version: 207,
+    spec_version: 208,
     impl_version: 33,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 17,

runtime/kerria/src/lib.rs

@@ -180,7 +180,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("kerria"),
     impl_name: create_runtime_str!("kerria"),
     authoring_version: 1,
-    spec_version: 207,
+    spec_version: 208,
     impl_version: 33,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 17,

runtime/parallel/src/lib.rs

@@ -185,7 +185,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("parallel"),
     impl_name: create_runtime_str!("parallel"),
     authoring_version: 1,
-    spec_version: 207,
+    spec_version: 208,
     impl_version: 33,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 17,

runtime/vanilla/src/lib.rs

@@ -180,7 +180,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("vanilla"),
     impl_name: create_runtime_str!("vanilla"),
     authoring_version: 1,
-    spec_version: 207,
+    spec_version: 208,
     impl_version: 33,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 17,

scripts/collator.sh

@@ -20,7 +20,7 @@ VOLUME="chains"
 NODE_KEY="$1"
 KEYSTORE_PATH="$2"
 NODE_NAME="$3"
-DOCKER_IMAGE="parallelfinance/parallel:v2.0.7"
+DOCKER_IMAGE="parallelfinance/parallel:v2.0.8"
 BASE_PATH="/data"
 
 if [ $# -lt 3 ]; then