| 76 | } |
| 77 | |
| 78 | func (r *Registry) AddAlias(instanceName string, alias string) error { |
| 79 | if instanceName == "" { |
| 80 | panic("cannot add an alias for empty instance name") |
| 81 | } |
| 82 | if alias == "" { |
| 83 | panic("cannot add an empty alias") |
| 84 | } |
| 85 | _, ok := r.aliases[alias] |
| 86 | if ok { |
| 87 | return ErrInstanceNameDuplicate |
| 88 | } |
| 89 | _, ok = r.instances[instanceName] |
| 90 | if ok { |
| 91 | return ErrInstanceNameDuplicate |
| 92 | } |
| 93 | |
| 94 | r.aliases[alias] = instanceName |
| 95 | return nil |
| 96 | } |
| 97 | |
| 98 | func (r *Registry) ensureInitialized(name string, entry *registryEntry) error { |
| 99 | _, ok := r.initialized[name] |