fix: store oracle transactions properly

src/mappings/handlers/oracleHandlers.ts

@@ -6,14 +6,15 @@ import { OracleTransactionData, OracleTransactionService } from '../services/ora
 export const handleOracleFed = errorHandler(_handleOracleFed)
 async function _handleOracleFed(event: SubstrateEvent<OracleFedEvent>) {
   const [feeder, key, value] = event.event.data
-  logger.info(`Oracle feed: ${feeder.toString()} key: ${key.toString()} value: ${value.toString()}`)
+  logger.info(`Oracle feed: ${feeder.toString()} key: ${key.isin.toString()} value: ${value.toString()}`)
 
   const oracleTxData: OracleTransactionData = {
     hash: event.extrinsic.extrinsic.hash.toString(),
     timestamp: event.block.timestamp,
-    key: key.toString(),
+    key: key.isin.toString(),
     value: value.toBigInt(),
   }
 
-  OracleTransactionService.init(oracleTxData)
+  const oracleTx = OracleTransactionService.init(oracleTxData)
+  await oracleTx.save()
 }

src/mappings/services/oracleTransactionService.ts

@@ -9,12 +9,7 @@ export interface OracleTransactionData {
 
 export class OracleTransactionService extends OracleTransaction {
   static init = (data: OracleTransactionData) => {
-    const tx = new this(
-      `${data.hash}-${data.timestamp.toString()}-${data.key.toString()}`,
-      data.timestamp,
-      data.key.toString(),
-      data.value
-    )
+    const tx = new this(`${data.hash}-${data.key.toString()}`, data.timestamp, data.key.toString(), data.value)
 
     tx.timestamp = data.timestamp ?? null
     tx.key = data.key ?? null