60c972098c
And remove pod affinity parameter from algorithm provider registry Signed-off-by: Aldo Culquicondor <acondor@google.com>
92 lines
2.7 KiB
Go
92 lines
2.7 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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"sync"
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"k8s.io/apimachinery/pkg/runtime"
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framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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schedulerlisters "k8s.io/kubernetes/pkg/scheduler/listers"
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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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defaultHardPodAffinityWeight int32 = 1
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minHardPodAffinityWeight int32 = 0
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maxHardPodAffinityWeight int32 = 100
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)
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// Args holds the args that are used to configure the plugin.
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type Args struct {
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HardPodAffinityWeight *int32 `json:"hardPodAffinityWeight,omitempty"`
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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.PostFilterPlugin = &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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sharedLister schedulerlisters.SharedLister
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hardPodAffinityWeight int32
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sync.Mutex
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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.Unknown, h framework.FrameworkHandle) (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 := &Args{}
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if err := framework.DecodeInto(plArgs, args); err != nil {
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return nil, err
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}
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if err := validateArgs(args); err != nil {
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return nil, err
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}
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pl := &InterPodAffinity{
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sharedLister: h.SnapshotSharedLister(),
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hardPodAffinityWeight: defaultHardPodAffinityWeight,
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}
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if args.HardPodAffinityWeight != nil {
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pl.hardPodAffinityWeight = *args.HardPodAffinityWeight
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}
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return pl, nil
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}
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func validateArgs(args *Args) error {
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if args.HardPodAffinityWeight == nil {
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return nil
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}
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weight := *args.HardPodAffinityWeight
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if weight < minHardPodAffinityWeight || weight > maxHardPodAffinityWeight {
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return fmt.Errorf("invalid args.hardPodAffinityWeight: %d, must be in the range %d-%d", weight, minHardPodAffinityWeight, maxHardPodAffinityWeight)
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}
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return nil
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}
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