dc3d1bd238
- eliminate running paths of Predicates in scheduler; use Filter Plugins instead. - refactor all unit tests - adjust the TestPreemptWithPermitPlugin integration test
58 lines
1.9 KiB
Go
58 lines
1.9 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 noderesources
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import (
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"context"
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"fmt"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/kubernetes/pkg/scheduler/algorithm/predicates"
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"k8s.io/kubernetes/pkg/scheduler/framework/plugins/migration"
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framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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"k8s.io/kubernetes/pkg/scheduler/nodeinfo"
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)
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// Fit is a plugin that checks if a node has sufficient resources.
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type Fit struct{}
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var _ framework.FilterPlugin = &Fit{}
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// FitName is the name of the plugin used in the plugin registry and configurations.
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const FitName = "NodeResourcesFit"
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// Name returns name of the plugin. It is used in logs, etc.
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func (f *Fit) Name() string {
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return FitName
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}
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// Filter invoked at the filter extension point.
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func (f *Fit) Filter(ctx context.Context, cycleState *framework.CycleState, pod *v1.Pod, nodeInfo *nodeinfo.NodeInfo) *framework.Status {
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meta, ok := migration.CovertStateRefToPredMeta(migration.PredicateMetadata(cycleState))
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if !ok {
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return migration.ErrorToFrameworkStatus(fmt.Errorf("%+v convert to predicates.Metadata error", cycleState))
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}
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_, reasons, err := predicates.PodFitsResources(pod, meta, nodeInfo)
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return migration.PredicateResultToFrameworkStatus(reasons, err)
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}
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// NewFit initializes a new plugin and returns it.
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func NewFit(_ *runtime.Unknown, _ framework.FrameworkHandle) (framework.Plugin, error) {
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return &Fit{}, nil
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}
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