db for mock el

cmd/erigon-el-mock/main.go

@@ -1,17 +1,23 @@
 package main
 
 import (
+	"flag"
 	"net"
 
 	"github.com/c2h5oh/datasize"
 	"github.com/ledgerwatch/erigon-lib/gointerfaces/execution"
+	"github.com/ledgerwatch/erigon-lib/kv"
+	"github.com/ledgerwatch/erigon-lib/kv/mdbx"
 	"github.com/ledgerwatch/erigon-lib/kv/memdb"
 	"google.golang.org/grpc"
 
 	"github.com/ledgerwatch/log/v3"
 )
 
 func main() {
+
+	datadir := flag.String("datadir", "", "non in-memory db for EL simulation")
+	flag.Parse()
 	log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StderrHandler))
 	lis, err := net.Listen("tcp", "127.0.0.1:8989")
 	if err != nil {
@@ -20,7 +26,17 @@ func main() {
 	maxReceiveSize := 500 * datasize.MB
 
 	s := grpc.NewServer(grpc.MaxRecvMsgSize(int(maxReceiveSize)))
-	execution.RegisterExecutionServer(s, NewEth1Execution(memdb.New("" /* tmpDir */)))
+	var db kv.RwDB
+	if *datadir == "" {
+		db = memdb.New("")
+	} else {
+		db, err = mdbx.Open(*datadir, log.Root(), false)
+		if err != nil {
+			log.Error("Could not open database", "err", err)
+			return
+		}
+	}
+	execution.RegisterExecutionServer(s, NewEth1Execution(db))
 	log.Info("Serving mock Execution layer.")
 	if err := s.Serve(lis); err != nil {
 		log.Error("failed to serve", "err", err)