github.com/kubewharf/katalyst-core@v0.5.3/pkg/client/control/eviction.go (about) 1 /* 2 Copyright 2022 The Katalyst Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package control 18 19 import ( 20 "context" 21 22 policy "k8s.io/api/policy/v1beta1" 23 metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" 24 "k8s.io/client-go/kubernetes" 25 ) 26 27 // PodEjector is used to evict Pods 28 type PodEjector interface { 29 DeletePod(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error 30 EvictPod(ctx context.Context, eviction *policy.Eviction) error 31 } 32 33 type DummyPodEjector struct{} 34 35 func (d DummyPodEjector) DeletePod(_ context.Context, _, _ string, _ metav1.DeleteOptions) error { 36 return nil 37 } 38 39 func (d DummyPodEjector) EvictPod(_ context.Context, _ *policy.Eviction) error { 40 return nil 41 } 42 43 type RealPodEjector struct { 44 client kubernetes.Interface 45 } 46 47 func NewRealPodEjector(client kubernetes.Interface) *RealPodEjector { 48 return &RealPodEjector{ 49 client: client, 50 } 51 } 52 53 func (d *RealPodEjector) DeletePod(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error { 54 return d.client.CoreV1().Pods(namespace).Delete(ctx, name, opts) 55 } 56 57 func (d *RealPodEjector) EvictPod(ctx context.Context, eviction *policy.Eviction) error { 58 return d.client.PolicyV1beta1().Evictions(eviction.Namespace).Evict(ctx, eviction) 59 } 60 61 // RealPodEjectorWithMetric todo: implement with emitting metrics on updating 62 type RealPodEjectorWithMetric struct { 63 client kubernetes.Interface 64 RealPodUpdater 65 }