handle error when deleting non existing key

internal/rpc/rpc.go

@@ -140,6 +140,9 @@ func (t *Query) Delete(np *VaultService, success *bool) error {
 	err := val.Delete(np.Service)
 	if err != nil {
 		*success = false
+		if err == storage.ErrNotFound {
+			return nil
+		}
 		return err
 	}
 

internal/storage/vault.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"time"
+	"errors"
 
 	"github.com/ipfs/go-datastore/query"
 	pubsub "github.com/libp2p/go-libp2p-pubsub"
@@ -18,6 +19,8 @@ import (
 	. "github.com/k4lipso/pentapass/internal/log"
 )
 
+var ErrNotFound error = errors.New("Not found")
+
 type Vault struct {
 	ID string
 	Datastore *crdt.Datastore
@@ -73,8 +76,15 @@ func (n *Vault) Put(k string, v string) error {
 }
 
 func (n *Vault) Delete(k string) error {
+	_, err := n.GetPassword(k)
+
+	if err != nil {
+		return ErrNotFound
+	}
+
 	key := ds.NewKey(k)
-	err := n.Datastore.Delete(n.ctx, key)
+
+	err = n.Datastore.Delete(n.ctx, key)
 
 	if err != nil {
 		printErr(err)