added the k8s network plumbing wg network crd structure

see issue #61 and #62 for more info

Change-Id: I228d17d7b15985fb3a2209799a085bba2b97980c
Co-authored-by: Doug Smith <dougbtv@users.noreply.github.com>
Co-authored-by: Tomofumi Hayashi <s1061123@users.noreply.github.com>
Co-authored-by: Dan Williams <dcbw@users.noreply.github.com>

types/types.go

@@ -13,14 +13,13 @@
 // limitations under the License.
 //
 
-
 package types
 
 import (
 	"net"
 
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"github.com/containernetworking/cni/pkg/types"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 // NetConf for cni config file written in json
@@ -32,11 +31,40 @@ type NetConf struct {
 	UseDefault bool                     `json:"always_use_default"`
 }
 
-type Netplugin struct {
-	metav1.TypeMeta   `json:",inline"`
-	metav1.ObjectMeta `json:"metadata,omitempty" description:"standard object metadata"`
-	Plugin            string `json:"plugin"`
-	Args              string `json:"args"`
+type Network struct {
+	metav1.TypeMeta `json:",inline"`
+	// Note that ObjectMeta is mandatory, as an object
+	// name is required
+	Metadata metav1.ObjectMeta `json:"metadata,omitempty" description:"standard object metadata"`
+
+	// Specification describing how to invoke a CNI plugin to
+	// add or remove network attachments for a Pod.
+	// In the absence of valid keys in a Spec, the runtime (or
+	// meta-plugin) should load and execute a CNI .configlist
+	// or .config (in that order) file on-disk whose JSON
+	// “name” key matches this Network object’s name.
+	// +optional
+	Spec NetworkSpec `json:"spec"`
+}
+
+type NetworkSpec struct {
+	// Config contains a standard JSON-encoded CNI configuration
+	// or configuration list which defines the plugin chain to
+	// execute.  If present, this key takes precedence over
+	// ‘Plugin’.
+	// +optional
+	Config string `json:"config"`
+
+	// Plugin contains the name of a CNI plugin on-disk in a
+	// runtime-defined path (eg /opt/cni/bin and/or other paths.
+	// This plugin should be executed with a basic CNI JSON
+	// configuration on stdin containing the Network object
+	// name and the plugin:
+	//   { “cniVersion”: “0.3.1”, “type”: <Plugin>, “name”: <Network.Name> }
+	// and any additional “runtimeConfig” field per the
+	// CNI specification and conventions.
+	// +optional
+	Plugin string `json:"plugin"`
 }
 
 // K8sArgs is the valid CNI_ARGS used for Kubernetes