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pod_filter.go
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pod_filter.go
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/*
Copyright 2022 The Koordinator Authors.
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.
*/
package framework
import (
"fmt"
corev1 "k8s.io/api/core/v1"
"github.com/koordinator-sh/koordinator/pkg/koordlet/statesinformer"
)
type PodFilter interface {
// FilterPod returns true if the collector should skip collecting the pod.
FilterPod(podMeta *statesinformer.PodMeta) (shouldSkip bool, msg string)
}
// DefaultPodFilter filters nothing and allows collection for all pods.
var DefaultPodFilter PodFilter = &NothingPodFilter{}
type NothingPodFilter struct{}
func (n *NothingPodFilter) FilterPod(podMeta *statesinformer.PodMeta) (bool, string) {
return false, ""
}
type TerminatedPodFilter struct{}
func (t *TerminatedPodFilter) FilterPod(podMeta *statesinformer.PodMeta) (bool, string) {
if podMeta == nil || podMeta.Pod == nil {
return true, "invalid pod meta"
}
pod := podMeta.Pod
if phase := pod.Status.Phase; phase != corev1.PodRunning && phase != corev1.PodPending {
return true, fmt.Sprintf("pod phase %s is terminated", phase)
}
return false, ""
}
type AndPodFilter struct {
Filters []PodFilter
}
func NewAndPodFilter(filters ...PodFilter) PodFilter {
return &AndPodFilter{Filters: filters}
}
func (a *AndPodFilter) FilterPod(podMeta *statesinformer.PodMeta) (bool, string) {
for _, filter := range a.Filters {
if filtered, msg := filter.FilterPod(podMeta); filtered {
return true, msg
}
}
return false, ""
}