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affinity.go
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affinity.go
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//
// DISCLAIMER
//
// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//
package pod
import (
core "k8s.io/api/core/v1"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
api "github.com/arangodb/kube-arangodb/pkg/apis/deployment/v1"
shared "github.com/arangodb/kube-arangodb/pkg/apis/shared"
"github.com/arangodb/kube-arangodb/pkg/util/k8sutil"
"github.com/arangodb/kube-arangodb/pkg/util/k8sutil/interfaces"
)
func AppendPodAntiAffinityDefault(p interfaces.PodCreator, a *core.PodAntiAffinity) {
labels := k8sutil.LabelsForDeployment(p.GetName(), p.GetRole())
labelSelector := &meta.LabelSelector{
MatchLabels: labels,
}
if !p.IsDeploymentMode() {
a.RequiredDuringSchedulingIgnoredDuringExecution = append(a.RequiredDuringSchedulingIgnoredDuringExecution, core.PodAffinityTerm{
LabelSelector: labelSelector,
TopologyKey: shared.TopologyKeyHostname,
})
} else {
a.PreferredDuringSchedulingIgnoredDuringExecution = append(a.PreferredDuringSchedulingIgnoredDuringExecution, core.WeightedPodAffinityTerm{
Weight: 1,
PodAffinityTerm: core.PodAffinityTerm{
LabelSelector: labelSelector,
TopologyKey: shared.TopologyKeyHostname,
},
})
}
}
func AppendArchSelector(a *core.NodeAffinity, nodeSelectorForArch core.NodeSelectorTerm) {
if a.RequiredDuringSchedulingIgnoredDuringExecution == nil {
a.RequiredDuringSchedulingIgnoredDuringExecution = &core.NodeSelector{}
}
a.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms = append(a.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms, nodeSelectorForArch)
}
func GetArchFromAffinity(a *core.Affinity) api.ArangoDeploymentArchitectureType {
if a != nil && a.NodeAffinity != nil && a.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution != nil {
for _, nst := range a.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms {
for _, req := range nst.MatchExpressions {
if req.Key == shared.NodeArchAffinityLabel || req.Key == shared.NodeArchAffinityLabelBeta {
for _, arch := range req.Values {
return api.ArangoDeploymentArchitectureType(arch)
}
}
}
}
}
return ""
}
func SetArchInAffinity(a *core.Affinity, arch api.ArangoDeploymentArchitectureType) {
if a != nil && a.NodeAffinity != nil && a.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution != nil {
a.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms = []core.NodeSelectorTerm{arch.AsNodeSelectorRequirement()}
}
}
func AppendAffinityWithRole(p interfaces.PodCreator, a *core.PodAffinity, role string) {
labelSelector := &meta.LabelSelector{
MatchLabels: k8sutil.LabelsForDeployment(p.GetName(), role),
}
a.PreferredDuringSchedulingIgnoredDuringExecution = append(a.PreferredDuringSchedulingIgnoredDuringExecution, core.WeightedPodAffinityTerm{
Weight: 1,
PodAffinityTerm: core.PodAffinityTerm{
LabelSelector: labelSelector,
TopologyKey: shared.TopologyKeyHostname,
},
})
}