cli-utils/internal/pkg/client/interface.go

76 lines
2.9 KiB
Go

/*
Copyright 2019 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package client
import (
"context"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
)
// Patch is a patch that can be applied to a Kubernetes object.
type Patch interface {
// Type is the PatchType of the patch.
Type() types.PatchType
// Data is the raw data representing the patch.
Data(obj runtime.Object) ([]byte, error)
}
// Reader knows how to read and list Kubernetes objects.
type Reader interface {
// Get retrieves an obj for the given object key from the Kubernetes Cluster.
// obj must be a struct pointer so that obj can be updated with the response
// returned by the Server.
Get(ctx context.Context, key types.NamespacedName, obj runtime.Object) error
// List retrieves list of objects for a given namespace and list options. On a
// successful call, Items field in the list will be populated with the
// result returned from the server.
List(ctx context.Context, list runtime.Object, namespace string, options metav1.ListOptions) error
}
// Writer knows how to create, delete, and update Kubernetes objects.
type Writer interface {
// Create saves the object obj in the Kubernetes cluster.
Create(ctx context.Context, obj runtime.Object, options metav1.CreateOptions) error
// Delete deletes the given obj from Kubernetes cluster.
Delete(ctx context.Context, obj runtime.Object, options *metav1.DeleteOptions) error
// Update updates the given obj in the Kubernetes cluster. obj must be a
// struct pointer so that obj can be updated with the content returned by the Server.
Update(ctx context.Context, obj runtime.Object, options metav1.UpdateOptions) error
// Patch patches the given obj in the Kubernetes cluster. obj must be a
// struct pointer so that obj can be updated with the content returned by the Server.
Patch(ctx context.Context, obj runtime.Object, patch Patch, options metav1.PatchOptions) error
}
// StatusWriter knows how to update status subresource of a Kubernetes object.
type StatusWriter interface {
// UpdateStatus updates the fields corresponding to the status subresource for the
// given obj. obj must be a struct pointer so that obj can be updated
// with the content returned by the Server.
UpdateStatus(ctx context.Context, obj runtime.Object) error
}
// Client knows how to perform CRUD operations on Kubernetes objects.
type Client interface {
Reader
Writer
StatusWriter
}