gaiacli, keys: Improve error message when deleting non-existant key

CHANGELOG.md

@@ -80,8 +80,9 @@ IMPROVEMENTS
 * [stake] module reorganized to include `types` and `keeper` package
 * [stake] keeper always loads the store (instead passing around which doesn't really boost efficiency)
 * [stake] edit-validator changes now can use the keyword [do-not-modify] to not modify unspecified `--flag` (aka won't set them to `""` value)
-* [types] added common tag constants
 * [stake] offload more generic functionality from the handler into the keeper
+* [types] added common tag constants
+* [keys] improve error message when deleting non-existent key
 * added contributing guidelines
 
 BUG FIXES

client/keys/delete.go

@@ -25,14 +25,19 @@ func deleteKeyCommand() *cobra.Command {
 func runDeleteCmd(cmd *cobra.Command, args []string) error {
 	name := args[0]
 
-	buf := client.BufferStdin()
-	oldpass, err := client.GetPassword(
-		"DANGER - enter password to permanently delete key:", buf)
+	kb, err := GetKeyBase()
 	if err != nil {
 		return err
 	}
 
-	kb, err := GetKeyBase()
+	_, err = kb.Get(name)
+	if err != nil {
+		return err
+	}
+
+	buf := client.BufferStdin()
+	oldpass, err := client.GetPassword(
+		"DANGER - enter password to permanently delete key:", buf)
 	if err != nil {
 		return err
 	}

crypto/keys/keybase.go

@@ -188,6 +188,9 @@ func (kb dbKeybase) List() ([]Info, error) {
 // Get returns the public information about one key.
 func (kb dbKeybase) Get(name string) (Info, error) {
 	bs := kb.db.Get(infoKey(name))
+	if len(bs) == 0 {
+		return nil, fmt.Errorf("Key %s not found", name)
+	}
 	return readInfo(bs)
 }