74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package interpodaffinity
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/kubernetes/pkg/scheduler/apis/config"
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"k8s.io/kubernetes/pkg/scheduler/apis/config/validation"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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)
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const (
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// Name is the name of the plugin used in the plugin registry and configurations.
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Name = "InterPodAffinity"
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)
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var _ framework.PreFilterPlugin = &InterPodAffinity{}
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var _ framework.FilterPlugin = &InterPodAffinity{}
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var _ framework.PreScorePlugin = &InterPodAffinity{}
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var _ framework.ScorePlugin = &InterPodAffinity{}
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// InterPodAffinity is a plugin that checks inter pod affinity
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type InterPodAffinity struct {
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args config.InterPodAffinityArgs
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sharedLister framework.SharedLister
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}
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// Name returns name of the plugin. It is used in logs, etc.
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func (pl *InterPodAffinity) Name() string {
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return Name
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}
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// New initializes a new plugin and returns it.
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func New(plArgs runtime.Object, h framework.Handle) (framework.Plugin, error) {
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if h.SnapshotSharedLister() == nil {
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return nil, fmt.Errorf("SnapshotSharedlister is nil")
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}
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args, err := getArgs(plArgs)
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if err != nil {
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return nil, err
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}
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if err := validation.ValidateInterPodAffinityArgs(args); err != nil {
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return nil, err
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}
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return &InterPodAffinity{
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args: args,
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sharedLister: h.SnapshotSharedLister(),
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}, nil
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}
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func getArgs(obj runtime.Object) (config.InterPodAffinityArgs, error) {
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ptr, ok := obj.(*config.InterPodAffinityArgs)
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if !ok {
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return config.InterPodAffinityArgs{}, fmt.Errorf("want args to be of type InterPodAffinityArgs, got %T", obj)
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}
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return *ptr, nil
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}
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