Add network attachment methods to cluster provider

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>

libnetwork/cluster/provider.go

@@ -1,5 +1,10 @@
 package cluster
 
+import (
+	"github.com/docker/engine-api/types/network"
+	"golang.org/x/net/context"
+)
+
 // Provider provides clustering config details
 type Provider interface {
 	IsManager() bool
@@ -8,4 +13,8 @@ type Provider interface {
 	GetAdvertiseAddress() string
 	GetRemoteAddress() string
 	ListenClusterEvents() <-chan struct{}
+	AttachNetwork(string, string, []string) (*network.NetworkingConfig, error)
+	DetachNetwork(string, string) error
+	UpdateAttachment(string, string, *network.NetworkingConfig) error
+	WaitForDetachment(context.Context, string, string, string) error
 }

libnetwork/cmd/dnet/dnet.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/Sirupsen/logrus"
 	"github.com/docker/docker/pkg/term"
+	"github.com/docker/engine-api/types/network"
 	"github.com/docker/libnetwork"
 	"github.com/docker/libnetwork/api"
 	"github.com/docker/libnetwork/config"
@@ -34,6 +35,7 @@ import (
 	"github.com/docker/libnetwork/options"
 	"github.com/docker/libnetwork/types"
 	"github.com/gorilla/mux"
+	"golang.org/x/net/context"
 )
 
 const (
@@ -329,6 +331,22 @@ func (d *dnetConnection) ListenClusterEvents() <-chan struct{} {
 	return d.configEvent
 }
 
+func (d *dnetConnection) AttachNetwork(string, string, []string) (*network.NetworkingConfig, error) {
+	return nil, nil
+}
+
+func (d *dnetConnection) DetachNetwork(string, string) error {
+	return nil
+}
+
+func (d *dnetConnection) UpdateAttachment(string, string, *network.NetworkingConfig) error {
+	return nil
+}
+
+func (d *dnetConnection) WaitForDetachment(context.Context, string, string, string) error {
+	return nil
+}
+
 func handleSignals(controller libnetwork.NetworkController) {
 	c := make(chan os.Signal, 1)
 	signals := []os.Signal{os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT}