[EVM] Add logging for expiration (#198)

* add logging for expired txs

* cleanup

internal/mempool/mempool.go

@@ -856,6 +856,32 @@ func (txmp *TxMempool) removeTx(wtx *WrappedTx, removeFromCache bool) {
  wtx.removeHandler(removeFromCache)
 }
 
+func (txmp *TxMempool) expire(blockHeight int64, wtx *WrappedTx) {
+ txmp.metrics.ExpiredTxs.Add(1)
+ txmp.logExpiredTx(blockHeight, wtx)
+ wtx.removeHandler(!txmp.config.KeepInvalidTxsInCache)
+}
+
+func (txmp *TxMempool) logExpiredTx(blockHeight int64, wtx *WrappedTx) {
+ // defensive check
+ if wtx == nil {
+ return
+ }
+
+ txmp.logger.Info(
+ "transaction expired",
+ "priority", wtx.priority,
+ "tx", fmt.Sprintf("%X", wtx.tx.Hash()),
+ "address", wtx.evmAddress,
+ "evm", wtx.isEVM,
+ "nonce", wtx.evmNonce,
+ "height", blockHeight,
+ "tx_height", wtx.height,
+ "tx_timestamp", wtx.timestamp,
+ "age", time.Since(wtx.timestamp),
+ )
+}
+
 // purgeExpiredTxs removes all transactions that have exceeded their respective
 // height- and/or time-based TTLs from their respective indexes. Every expired
 // transaction will be removed from the mempool, but preserved in the cache (except for pending txs).
@@ -902,14 +928,12 @@ func (txmp *TxMempool) purgeExpiredTxs(blockHeight int64) {
  }
 
  for _, wtx := range expiredTxs {
- txmp.metrics.ExpiredTxs.Add(1)
- txmp.removeTx(wtx, !txmp.config.KeepInvalidTxsInCache)
+ txmp.expire(blockHeight, wtx)
  }
 
  // remove pending txs that have expired
  txmp.pendingTxs.PurgeExpired(txmp.config.TTLNumBlocks, blockHeight, txmp.config.TTLDuration, now, func(wtx *WrappedTx) {
- txmp.metrics.ExpiredTxs.Add(1)
- wtx.removeHandler(!txmp.config.KeepInvalidTxsInCache)
+ txmp.expire(blockHeight, wtx)
  })
 }