From 090878c1577f5a4de2f798967fabc8888364b10a Mon Sep 17 00:00:00 2001
From: Bryan Boreham <bjboreham@gmail.com>
Date: Thu, 5 Jan 2017 17:38:05 +0000
Subject: [PATCH] Implement GetCapabilities on IPAM interface to eliminate
 warning message

---
 plugin/ipam/driver.go   |  5 +++++
 plugin/skel/listener.go | 19 +++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/plugin/ipam/driver.go b/plugin/ipam/driver.go
index 417e468f..78a650e7 100644
--- a/plugin/ipam/driver.go
+++ b/plugin/ipam/driver.go
@@ -19,6 +19,11 @@ func NewIpam(weave *api.Client) *Ipam {
 	return &Ipam{weave: weave}
 }
 
+func (i *Ipam) GetCapabilities() (RequiresMACAddress bool, RequiresRequestReplay bool, err error) {
+	i.logReq("GetCapabilities")
+	return false, false, nil
+}
+
 func (i *Ipam) GetDefaultAddressSpaces() (string, string, error) {
 	i.logReq("GetDefaultAddressSpaces")
 	return "weavelocal", "weaveglobal", nil
diff --git a/plugin/skel/listener.go b/plugin/skel/listener.go
index a253ac94..1ad98ba8 100644
--- a/plugin/skel/listener.go
+++ b/plugin/skel/listener.go
@@ -33,6 +33,10 @@ type Driver interface {
 	DiscoverDelete(delete *api.DiscoveryNotification) error
 }
 
+type IpamCapability interface {
+	GetCapabilities() (RequiresMACAddress bool, RequiresRequestReplay bool, err error)
+}
+
 type listener struct {
 	d Driver
 	i ipamapi.Ipam
@@ -65,6 +69,7 @@ func Listen(socket net.Listener, driver Driver, ipamDriver ipamapi.Ipam) error {
 	}
 
 	if ipamDriver != nil {
+		handleMethod(ipamReceiver, "GetCapabilities", listener.getIpamCapabilities)
 		handleMethod(ipamReceiver, "GetDefaultAddressSpaces", listener.getDefaultAddressSpaces)
 		handleMethod(ipamReceiver, "RequestPool", listener.requestPool)
 		handleMethod(ipamReceiver, "ReleasePool", listener.releasePool)
@@ -216,6 +221,20 @@ func (listener *listener) discoverDelete(w http.ResponseWriter, r *http.Request)
 
 // ===
 
+func (listener *listener) getIpamCapabilities(w http.ResponseWriter, r *http.Request) {
+	c, ok := listener.i.(IpamCapability)
+	if !ok {
+		http.NotFound(w, r)
+		return
+	}
+	requiresMACAddress, requiresRequestReplay, err := c.GetCapabilities()
+	response := &ipamapi.Capability{
+		RequiresMACAddress:    requiresMACAddress,
+		RequiresRequestReplay: requiresRequestReplay,
+	}
+	objectOrErrorResponse(w, response, err)
+}
+
 func (listener *listener) getDefaultAddressSpaces(w http.ResponseWriter, r *http.Request) {
 	local, global, err := listener.i.GetDefaultAddressSpaces()
 	response := &iapi.GetAddressSpacesResponse{