improve error message

Upstream-commit: 8fa6e2b103e436435ad0f0ae00e8cc9af4c58ad4 Component: engine
2013-10-30 11:24:50 -07:00
parent d2b1922a6b
commit 0837dc21f1
1 changed files with 3 additions and 0 deletions
--- a/components/engine/runtime.go
+++ b/components/engine/runtime.go
@ -355,6 +355,9 @@ func (runtime *Runtime) Create(config *Config, name string) (*Container, []strin

 	// Set the enitity in the graph using the default name specified
 	if _, err := runtime.containerGraph.Set(name, id); err != nil {
+		if strings.HasSuffix(err.Error(), "name are not unique") {
+			return nil, nil, fmt.Errorf("Conflict, %s already exists.", name)
+		}
 		return nil, nil, err
 	}