/
dynamic_client.go
58 lines (53 loc) · 1.52 KB
/
dynamic_client.go
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package client
import (
"context"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/restmapper"
)
type DynamicClient struct {
config *rest.Config
dynamicCli dynamic.Interface
mapper meta.RESTMapper
}
func NewDynamicClient(config *rest.Config) (*DynamicClient, error) {
dcli, err := dynamic.NewForConfig(config)
if err != nil {
return nil, err
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
groupResources, err := restmapper.GetAPIGroupResources(clientset.Discovery())
if err != nil {
return nil, err
}
mapper := restmapper.NewDiscoveryRESTMapper(groupResources)
if err != nil {
return nil, err
}
return &DynamicClient{
config: config,
dynamicCli: dcli,
mapper: mapper,
}, nil
}
func (c *DynamicClient) Update(ctx context.Context, namespace string, obj runtime.Object) (*unstructured.Unstructured, error) {
gvk := obj.GetObjectKind().GroupVersionKind()
gk := gvk.GroupKind()
mapping, err := c.mapper.RESTMapping(gk, gvk.Version)
if err != nil {
return nil, err
}
unstructureObj, err := runtime.DefaultUnstructuredConverter.ToUnstructured(obj)
if err != nil {
return nil, err
}
return c.dynamicCli.Resource(mapping.Resource).Namespace(namespace).Update(ctx, &unstructured.Unstructured{unstructureObj}, metav1.UpdateOptions{})
}