gasUsed and gasPrice in a Transaction

Author: benesjan

schema.graphql

@@ -129,6 +129,8 @@ type Transaction @entity {
   id: ID! # txn hash
   blockNumber: BigInt!
   timestamp: BigInt!
+  gasUsed: BigInt!
+  gasPrice: BigInt!
   # This is not the reverse of Mint.transaction; it is only used to
   # track incomplete mints (similar for burns and swaps)
   mints: [Mint]!

src/mappings/core.ts

@@ -57,6 +57,8 @@ export function handleTransfer(event: Transfer): void {
     transaction = new Transaction(transactionHash)
     transaction.blockNumber = event.block.number
     transaction.timestamp = event.block.timestamp
+    transaction.gasUsed = event.transaction.gasUsed
+    transaction.gasPrice = event.transaction.gasPrice
     transaction.mints = []
     transaction.burns = []
     transaction.swaps = []
@@ -465,6 +467,8 @@ export function handleSwap(event: Swap): void {
     transaction = new Transaction(event.transaction.hash.toHexString())
     transaction.blockNumber = event.block.number
     transaction.timestamp = event.block.timestamp
+    transaction.gasUsed = event.transaction.gasUsed
+    transaction.gasPrice = event.transaction.gasPrice
     transaction.mints = []
     transaction.swaps = []
     transaction.burns = []