Add String method to all interfaces

registry/consul_registry.go

@@ -212,3 +212,7 @@ func (c *consulRegistry) ListServices() ([]*Service, error) {
 func (c *consulRegistry) Watch() (Watcher, error) {
 	return newConsulWatcher(c)
 }
+
+func (c *consulRegistry) String() string {
+	return "consul"
+}

registry/mock/mock.go

@@ -65,6 +65,10 @@ func (m *MockRegistry) Watch() (registry.Watcher, error) {
 	return nil, nil
 }
 
+func (m *MockRegistry) String() string {
+	return "mock"
+}
+
 func NewRegistry() *MockRegistry {
 	return &MockRegistry{}
 }

registry/registry.go

@@ -6,6 +6,7 @@ type Registry interface {
 	GetService(string) ([]*Service, error)
 	ListServices() ([]*Service, error)
 	Watch() (Watcher, error)
+	String() string
 }
 
 type Option func(*Options)
@@ -37,3 +38,7 @@ func ListServices() ([]*Service, error) {
 func Watch() (Watcher, error) {
 	return DefaultRegistry.Watch()
 }
+
+func String() string {
+	return DefaultRegistry.String()
+}