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package kcpstore
import (
"context"
"encoding/json"
"fmt"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/rest"
)
type ClusterResource[T any] struct {
store *Store
gvr schema.GroupVersionResource
}
func NewClusterResource[T any](store *Store, gvr schema.GroupVersionResource) *ClusterResource[T] {
return &ClusterResource[T]{store: store, gvr: gvr}
}
func (r *ClusterResource[T]) client(cluster string) (rest.Interface, error) {
if r == nil || r.store == nil {
return nil, fmt.Errorf("kcpstore: the kcp store is not configured")
}
return r.store.ClientFor(cluster, r.gvr.GroupVersion())
}
func (r *ClusterResource[T]) Get(ctx context.Context, cluster, name string) (*T, error) {
c, err := r.client(cluster)
if err != nil {
return nil, err
}
raw, err := c.Get().Resource(r.gvr.Resource).Name(name).Do(ctx).Raw()
if err != nil {
return nil, fmt.Errorf("kcpstore: read %s %s in %s: %w", r.gvr.Resource, name, cluster, err)
}
var out T
if err := json.Unmarshal(raw, &out); err != nil {
return nil, fmt.Errorf("kcpstore: decode %s: %w", r.gvr.Resource, err)
}
return &out, nil
}
func (r *ClusterResource[T]) List(ctx context.Context, cluster string) ([]T, error) {
c, err := r.client(cluster)
if err != nil {
return nil, err
}
raw, err := c.Get().Resource(r.gvr.Resource).Do(ctx).Raw()
if err != nil {
return nil, fmt.Errorf("kcpstore: list %s in %s: %w", r.gvr.Resource, cluster, err)
}
var list struct {
Items []T `json:"items"`
}
if err := json.Unmarshal(raw, &list); err != nil {
return nil, fmt.Errorf("kcpstore: decode %s list: %w", r.gvr.Resource, err)
}
return list.Items, nil
}
func (r *ClusterResource[T]) Create(ctx context.Context, cluster string, obj *T) error {
c, err := r.client(cluster)
if err != nil {
return err
}
raw, err := json.Marshal(obj)
if err != nil {
return fmt.Errorf("kcpstore: encode %s: %w", r.gvr.Resource, err)
}
response, err := c.Post().Resource(r.gvr.Resource).Body(raw).Do(ctx).Raw()
if err != nil {
return fmt.Errorf("kcpstore: create %s %s in %s: %w%s", r.gvr.Resource, NameOf(raw), cluster, err, ResponseDetail(response))
}
return nil
}
func (r *ClusterResource[T]) Delete(ctx context.Context, cluster, name string) error {
c, err := r.client(cluster)
if err != nil {
return err
}
err = c.Delete().Resource(r.gvr.Resource).Name(name).Body([]byte(`{"propagationPolicy":"Background"}`)).Do(ctx).Error()
if err != nil && !apierrors.IsNotFound(err) {
return fmt.Errorf("kcpstore: delete %s %s in %s: %w", r.gvr.Resource, name, cluster, err)
}
return nil
}
func (r *ClusterResource[T]) ApplyStatus(ctx context.Context, cluster, kind, name, fieldManager string, status map[string]any) error {
c, err := r.client(cluster)
if err != nil {
return err
}
body, err := json.Marshal(map[string]any{
"apiVersion": r.gvr.GroupVersion().String(),
"kind": kind,
"metadata": map[string]any{"name": name},
"status": status,
})
if err != nil {
return fmt.Errorf("kcpstore: encode %s status: %w", r.gvr.Resource, err)
}
response, err := c.Patch(types.ApplyPatchType).SubResource("status").Resource(r.gvr.Resource).Name(name).
Param("fieldManager", fieldManager).Param("force", "true").Body(body).Do(ctx).Raw()
if err != nil {
return fmt.Errorf("kcpstore: apply %s status for %s in %s: %w%s", r.gvr.Resource, name, cluster, err, ResponseDetail(response))
}
return nil
}
func (r *ClusterResource[T]) ApplySpec(ctx context.Context, cluster, kind, name, fieldManager string, spec map[string]any) error {
c, err := r.client(cluster)
if err != nil {
return err
}
body, err := json.Marshal(map[string]any{
"apiVersion": r.gvr.GroupVersion().String(),
"kind": kind,
"metadata": map[string]any{"name": name},
"spec": spec,
})
if err != nil {
return fmt.Errorf("kcpstore: encode %s spec: %w", r.gvr.Resource, err)
}
response, err := c.Patch(types.ApplyPatchType).Resource(r.gvr.Resource).Name(name).
Param("fieldManager", fieldManager).Param("force", "true").Body(body).Do(ctx).Raw()
if err != nil {
return fmt.Errorf("kcpstore: apply %s spec for %s in %s: %w%s", r.gvr.Resource, name, cluster, err, ResponseDetail(response))
}
return nil
}
