109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
package k8s
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import (
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/client-go/dynamic"
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"k8s.io/client-go/rest"
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)
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// Resource represents a Kubernetes Resource
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type Resource struct {
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*base
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Connection
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group, version, name string
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}
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// NewResource returns a new Resource.
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func NewResource(c Connection, group, version, name string) *Resource {
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return &Resource{base: &base{}, Connection: c, group: group, version: version, name: name}
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}
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// GetInfo returns info about apigroup.
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func (r *Resource) GetInfo() (string, string, string) {
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return r.group, r.version, r.name
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}
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func (r *Resource) nsRes() dynamic.NamespaceableResourceInterface {
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g := schema.GroupVersionResource{
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Group: r.group,
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Version: r.version,
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Resource: r.name,
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}
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return r.DynDialOrDie().Resource(g)
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}
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// Get a Resource.
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func (r *Resource) Get(ns, n string) (interface{}, error) {
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return r.nsRes().Namespace(ns).Get(n, metav1.GetOptions{})
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}
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// List all Resources in a given namespace.
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func (r *Resource) List(ns string) (Collection, error) {
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obj, err := r.listAll(ns, r.name)
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if err != nil {
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return nil, err
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}
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return Collection{obj.(*metav1beta1.Table)}, nil
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}
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// Delete a Resource.
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func (r *Resource) Delete(ns, n string) error {
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return r.nsRes().Namespace(ns).Delete(n, nil)
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}
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// ----------------------------------------------------------------------------
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// Helpers...
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const gvFmt = "application/json;as=Table;v=%s;g=%s, application/json"
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func (r *Resource) listAll(ns, n string) (runtime.Object, error) {
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a := fmt.Sprintf(gvFmt, metav1beta1.SchemeGroupVersion.Version, metav1beta1.GroupName)
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_, codec := r.codecs()
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c, err := r.getClient()
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if err != nil {
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return nil, err
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}
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return c.Get().
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SetHeader("Accept", a).
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Namespace(ns).
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Resource(n).
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VersionedParams(&metav1beta1.TableOptions{}, codec).
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Do().Get()
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}
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func (r *Resource) getClient() (*rest.RESTClient, error) {
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crConfig := r.RestConfigOrDie()
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crConfig.GroupVersion = &schema.GroupVersion{Group: r.group, Version: r.version}
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crConfig.APIPath = "/apis"
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if len(r.group) == 0 {
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crConfig.APIPath = "/api"
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}
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codecs, _ := r.codecs()
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crConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: codecs}
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crRestClient, err := rest.RESTClientFor(crConfig)
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if err != nil {
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return nil, err
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}
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return crRestClient, nil
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}
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func (r *Resource) codecs() (serializer.CodecFactory, runtime.ParameterCodec) {
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scheme := runtime.NewScheme()
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gv := schema.GroupVersion{Group: r.group, Version: r.version}
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metav1.AddToGroupVersion(scheme, gv)
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scheme.AddKnownTypes(gv, &metav1beta1.Table{}, &metav1beta1.TableOptions{})
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scheme.AddKnownTypes(metav1beta1.SchemeGroupVersion, &metav1beta1.Table{}, &metav1beta1.TableOptions{})
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return serializer.NewCodecFactory(scheme), runtime.NewParameterCodec(scheme)
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}
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