/
client.go
111 lines (90 loc) · 2.66 KB
/
client.go
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package kubernetes
import (
"context"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/cli-runtime/pkg/resource"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
"github.com/slimtoolkit/slim/pkg/app/master/config"
)
type Client struct {
dynamic dynamic.Interface
static kubernetes.Interface
}
func NewClient(kubeOpts config.KubernetesOptions) (*Client, error) {
config, err := clientcmd.BuildConfigFromFlags("", kubeOpts.Kubeconfig)
if err != nil {
return nil, err
}
client := Client{}
client.dynamic, err = dynamic.NewForConfig(config)
if err != nil {
return nil, err
}
client.static, err = kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
return &client, nil
}
func (c *Client) Dynamic() dynamic.Interface {
return c.dynamic
}
func (c *Client) Static() kubernetes.Interface {
return c.static
}
func (c *Client) CreateOrUpdate(ctx context.Context, info *resource.Info) (err error) {
dto := unstructured.Unstructured{}
dto.Object, err = runtime.DefaultUnstructuredConverter.ToUnstructured(info.Object)
if err != nil {
return
}
// Disable the version check since we don't expect concurrent changes.
dto.SetResourceVersion("")
var obj *unstructured.Unstructured
obj, err = c.dynamic.
Resource(info.Mapping.Resource).
Namespace(info.Namespace).
Create(ctx, &dto, metav1.CreateOptions{})
if apierrors.IsAlreadyExists(err) {
obj, err = c.dynamic.
Resource(info.Mapping.Resource).
Namespace(info.Namespace).
Update(ctx, &dto, metav1.UpdateOptions{})
}
if err != nil {
return
}
err = runtime.DefaultUnstructuredConverter.FromUnstructured(obj.Object, info.Object)
if err == nil {
info.ResourceVersion = obj.GetResourceVersion()
}
return
}
func (c *Client) Delete(ctx context.Context, info *resource.Info) error {
return c.dynamic.
Resource(info.Mapping.Resource).
Namespace(info.Namespace).
Delete(
ctx,
info.Name,
metav1.DeleteOptions{})
}
// ResourceBuilderFunc is a helper function to avoid
// passing KuberneteOptions through unrelated code.
type ResourceBuilderFunc func() *resource.Builder
func NewResourceBuilder(kubeOpts config.KubernetesOptions) *resource.Builder {
configFlags := genericclioptions.NewConfigFlags(true)
configFlags.KubeConfig = &kubeOpts.Kubeconfig
return resource.NewBuilder(configFlags)
}
func NewResourceBuilderFunc(kubeOpts config.KubernetesOptions) ResourceBuilderFunc {
return func() *resource.Builder {
return NewResourceBuilder(kubeOpts)
}
}