miner: add gas and fee details to mining logs

miner/worker.go

@@ -780,8 +780,16 @@ func (w *worker) commit(uncles []*types.Header, interval func(), update bool, st
 		select {
 		case w.taskCh <- &task{receipts: receipts, state: s, block: block, createdAt: time.Now()}:
 			w.unconfirmed.Shift(block.NumberU64() - 1)
-			log.Info("Commit new mining work", "number", block.Number(), "txs", w.current.tcount, "uncles", len(uncles),
-				"elapsed", common.PrettyDuration(time.Since(start)))
+
+			feesWei := new(big.Int)
+			for _, tx := range block.Transactions() {
+				feesWei.Add(feesWei, new(big.Int).Mul(new(big.Int).SetUint64(tx.Gas()), tx.GasPrice()))
+			}
+			feesEth := new(big.Float).Quo(new(big.Float).SetInt(feesWei), new(big.Float).SetInt(big.NewInt(params.Ether)))
+
+			log.Info("Commit new mining work", "number", block.Number(), "uncles", len(uncles), "txs", w.current.tcount,
+				"gas", block.GasUsed(), "fees", feesEth, "elapsed", common.PrettyDuration(time.Since(start)))
+
 		case <-w.exitCh:
 			log.Info("Worker has exited")
 		}