v0.5.0-rc4: fixing autocert issue, cache ACME registration, added ls-config option

src/docker/client.go

@@ -40,7 +40,7 @@ func ConnectClient(host string) (Client, E.NestedError) {
 		opt = clientOptEnvHost
 	default:
 		helper, err := E.Check(connhelper.GetConnectionHelper(host))
-		if err.IsNotNil() {
+		if err.HasError() {
 			logger.Fatalf("unexpected error: %s", err)
 		}
 		if helper != nil {
@@ -65,7 +65,7 @@ func ConnectClient(host string) (Client, E.NestedError) {
 
 	client, err := E.Check(client.NewClientWithOpts(opt...))
 
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
 

src/docker/client_info.go

@@ -18,7 +18,7 @@ type ClientInfo struct {
 
 func GetClientInfo(clientHost string) (*ClientInfo, E.NestedError) {
 	dockerClient, err := ConnectClient(clientHost)
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, E.Failure("create docker client").With(err)
 	}
 
@@ -26,7 +26,7 @@ func GetClientInfo(clientHost string) (*ClientInfo, E.NestedError) {
 	defer cancel()
 
 	containers, err := E.Check(dockerClient.ContainerList(ctx, container.ListOptions{}))
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, E.Failure("list containers").With(err)
 	}
 
@@ -34,7 +34,7 @@ func GetClientInfo(clientHost string) (*ClientInfo, E.NestedError) {
 	// since the services being proxied to
 	// should have the same IP as the docker client
 	url, err := E.Check(client.ParseHostURL(dockerClient.DaemonHost()))
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, E.Invalid("host url", dockerClient.DaemonHost()).With(err)
 	}
 	if url.Scheme == "unix" {

src/docker/label.go

@@ -63,7 +63,7 @@ func ParseLabel(label string, value string) (*Label, E.NestedError) {
 	}
 	// try to parse value
 	v, err := p(value)
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
 	l.Value = v