tag: add func MustNewKey to wrap NewKey with panic (#1141)

census-instrumentation · May 29, 2019 · 9c37759 · 9c37759
1 parent 766cc5b
commit 9c37759
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/tag/key.go b/tag/key.go
@@ -29,6 +29,16 @@ func NewKey(name string) (Key, error) {
 	return Key{name: name}, nil
 }
 
+// MustNewKey creates or retrieves a string key identified by name.
+// An invalid key name raises a panic.
+func MustNewKey(name string) Key {
+	k, err := NewKey(name)
+	if err != nil {
+		panic(err)
+	}
+	return k
+}
+
 // Name returns the name of the key.
 func (k Key) Name() string {
 	return k.name