[helpers] Support parsing DustLost event (#58)

gear-foundation · Aug 10, 2023 · 6253224 · 6253224
1 parent b5d73b4
commit 6253224
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Showing 3 changed files with 22 additions and 1 deletion.
diff --git a/server/src/helpers/events.ts b/server/src/helpers/events.ts
@@ -19,6 +19,9 @@ export const isDepositEvent = ({ event: { section, method } }: EventRecord) =>
 export const isWithdrawEvent = ({ event: { section, method } }: EventRecord) =>
   isBalanceEvent(section) && method.toLowerCase() === EventMethodsLC.WITHDRAW;
 
+  export const isDustLostEvent = ({ event: { section, method } }: EventRecord) =>
+  isBalanceEvent(section) && method.toLowerCase() === EventMethodsLC.DUST_LOST;
+
 export const isReservedEvent = ({ event: { section, method } }: EventRecord) =>
   isBalanceEvent(section) && method.toLowerCase() === EventMethodsLC.RESERVED;
 

diff --git a/server/src/helpers/transaction.ts b/server/src/helpers/transaction.ts
@@ -10,6 +10,7 @@ import {
   isBalanceEvent,
   isBalanceSetEvent,
   isDepositEvent,
+  isDustLostEvent,
   isExtrinsicFailedEvent,
   isExtrinsicSuccessEvent,
   isReservedEvent,
@@ -161,6 +162,21 @@ export async function getOperations(
       operations.push(depositOperation);
     }
 
+    if (isDustLostEvent(event)) {
+      const account = data[0].toString()
+      const amount = data[1] as u128
+
+      const dustLostOperation = Operation.constructFromObject({
+        operation_identifier: new OperationIdentifier(operations.length),
+        type: OpType.DUST_LOST,
+        status: OperationStatus.SUCCESS,
+        account: new AccountIdentifier(account),
+        amount: new Amount(amount.toString(), currency),
+      })
+
+      operations.push(dustLostOperation);
+    }
+
     if (isReservedEvent(event)) {
       const account = data[0].toString()
       const amount = (data[1] as u128).toBn()

diff --git a/server/src/types/enums.ts b/server/src/types/enums.ts
@@ -20,6 +20,7 @@ export enum EventMethodsLC {
   TRANSFER = 'transfer',
   BALANCE_SET = 'balanceset',
   TRANSACTION_FEE_PAID = 'transactionfeepaid',
+  DUST_LOST = 'dustlost'
 }
 
 export enum EventSectionLC {
@@ -36,7 +37,8 @@ export enum OpType {
   UNRESERVED = 'Unreserved',
   RESERVE_REPATRIATED = 'ReserveRepatriated',
   BALANCE_SET = 'BalanceSet',
-  TRANSACTION_FEE_PAID = 'TransactionFeePaid'
+  TRANSACTION_FEE_PAID = 'TransactionFeePaid',
+  DUST_LOST = 'DustLost'
 }
 
 export const opTypes = Object.values(OpType);