fix bug for "duplicated alias"

fix bug “duplicated alias problem” while creating keys concurrently

diff --git a/blockchain/pseudohsm/pseudohsm.go b/blockchain/pseudohsm/pseudohsm.go
index fe18e1a..48ff9b9 100644 (file)
--- a/blockchain/pseudohsm/pseudohsm.go
+++ b/blockchain/pseudohsm/pseudohsm.go
@@ -49,14 +49,14 @@ func New(keypath string) (*HSM, error) {
 
 // XCreate produces a new random xprv and stores it in the db.
 func (h *HSM) XCreate(alias string, auth string) (*XPub, error) {
+       h.cacheMu.Lock()
+       defer h.cacheMu.Unlock()
+
        normalizedAlias := strings.ToLower(strings.TrimSpace(alias))
        if ok := h.cache.hasAlias(normalizedAlias); ok {
                return nil, ErrDuplicateKeyAlias
        }
 
-       h.cacheMu.Lock()
-       defer h.cacheMu.Unlock()
-
        xpub, _, err := h.createChainKDKey(auth, normalizedAlias, false)
        if err != nil {
                return nil, err