Implement STATUS

This commit implements the STATUS CNI verb. It adds a new function
StatusDetail which returns a list with the status of each network.

Signed-off-by: Michael Zappa <michael.zappa@gmail.com>
Signed-off-by: Archit Kulkarni <architkulkarni@google.com>
Co-authored-by: Michael Zappa <michael.zappa@gmail.com>

Author: architkulkarni

cni.go

@@ -45,6 +45,8 @@ type CNI interface {
 	Status() error
 	// GetConfig returns a copy of the CNI plugin configurations as parsed by CNI
 	GetConfig() *ConfigResult
+	// Status executes the status verb of the cni plugin
+	StatusDetail(context.Context) ([]*NetworkStatus, error)
 }
 
 type ConfigResult struct {
@@ -310,3 +312,23 @@ func (c *libcni) GetConfig() *ConfigResult {
 func (c *libcni) reset() {
 	c.networks = nil
 }
+
+// StatusDetail returns a slice of network statuses
+func (c *libcni) StatusDetail(ctx context.Context) ([]*NetworkStatus, error) {
+	err := c.Status()
+
+	if err != nil {
+		return nil, err
+	}
+
+	var networks []*NetworkStatus
+
+	for _, network := range c.Networks() {
+		networks = append(networks, &NetworkStatus{
+			Network: network,
+			Status:  network.Status(ctx),
+		})
+	}
+
+	return networks, nil
+}

cni_test.go

@@ -342,6 +342,7 @@ func TestLibCNIType120(t *testing.T) {
 		Args:           [][2]string(nil),
 		CapabilityArgs: map[string]interface{}{},
 	}
+	mockCNI.On("GetStatusNetworkList", l.networks[1].config).Return(nil)
 	mockCNI.On("AddNetworkList", l.networks[1].config, expectedRT).Return(&types100.Result{
 		CNIVersion: "1.1.0",
 		Interfaces: []*types100.Interface{

namespace.go

@@ -45,6 +45,10 @@ func (n *Network) Check(ctx context.Context, ns *Namespace) error {
 	return n.cni.CheckNetworkList(ctx, n.config, ns.config(n.ifName))
 }
 
+func (n *Network) Status(ctx context.Context) error {
+	return n.cni.GetStatusNetworkList(ctx, n.config)
+}
+
 type Namespace struct {
 	id             string
 	path           string

types.go

@@ -60,3 +60,8 @@ type DNS struct {
 	// List of DNS options.
 	Options []string
 }
+
+type NetworkStatus struct {
+	Network *Network
+	Status  error
+}