Add ReadLastEntryInfo to demo

cmd/dqlite-demo/dqlite-demo.go

@@ -5,7 +5,7 @@
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -14,6 +14,7 @@
 	"path/filepath"
 	"strings"
 
+	"github.com/canonical/go-dqlite/v3"
 	"github.com/canonical/go-dqlite/v3/app"
 	"github.com/canonical/go-dqlite/v3/client"
 	"github.com/pkg/errors"
@@ -65,7 +66,7 @@
 				if err != nil {
 					return err
 				}
-				data, err := ioutil.ReadFile(crt)
+				data, err := os.ReadFile(crt)
 				if err != nil {
 					return err
 				}
@@ -104,7 +105,7 @@
 					err = row.Scan(&result)
 				case "PUT":
 					result = "done"
-					value, _ := ioutil.ReadAll(r.Body)
+					value, _ := io.ReadAll(r.Body)
 					_, err = db.Exec(update, key, string(value[:]))
 				default:
 					err = fmt.Errorf("unsupported method")
@@ -138,6 +139,13 @@
 			app.Handover(context.Background())
 			app.Close()
 
+			lastEntry, err := dqlite.ReadLastEntryInfo(dir)
+			if err != nil {
+				return nil
+			}
+
+			fmt.Printf("dqlite-demo: last entry had term=%d index=%d", lastEntry.Term, lastEntry.Index)
+
 			return nil
 		},
 	}

cmd/dqlite/dqlite.go

@@ -6,7 +6,6 @@
 	"crypto/x509"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 	"time"
@@ -72,7 +71,7 @@
 					return err
 				}
 
-				data, err := ioutil.ReadFile(crt)
+				data, err := os.ReadFile(crt)
 				if err != nil {
 					return err
 				}