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83 lines
2.6 KiB
Go
83 lines
2.6 KiB
Go
/*
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Copyright 2016 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 podanalyzer
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import (
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"fmt"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/kubernetes/federation/pkg/federation-controller/util"
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api_v1 "k8s.io/kubernetes/pkg/api/v1"
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)
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type PodAnalysisResult struct {
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// Total number of pods created.
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Total int
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// Number of pods that are running and ready.
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RunningAndReady int
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// Number of pods that have been in unschedulable state for UnshedulableThreshold seconds.
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Unschedulable int
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// TODO: Handle other scenarios like pod waiting too long for scheduler etc.
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}
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const (
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// TODO: make it configurable
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UnschedulableThreshold = 60 * time.Second
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)
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// A function that calculates how many pods from the list are in one of
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// the meaningful (from the replica set perspective) states. This function is
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// a temporary workaround against the current lack of ownerRef in pods.
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func AnalysePods(selectorv1 *metav1.LabelSelector, allPods []util.FederatedObject, currentTime time.Time) (map[string]PodAnalysisResult, error) {
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selector, err := metav1.LabelSelectorAsSelector(selectorv1)
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if err != nil {
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return nil, fmt.Errorf("invalid selector: %v", err)
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}
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result := make(map[string]PodAnalysisResult)
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for _, fedObject := range allPods {
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pod, isPod := fedObject.Object.(*api_v1.Pod)
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if !isPod {
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return nil, fmt.Errorf("invalid arg content - not a *pod")
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}
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if !selector.Empty() && selector.Matches(labels.Set(pod.Labels)) {
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status := result[fedObject.ClusterName]
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status.Total++
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for _, condition := range pod.Status.Conditions {
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if pod.Status.Phase == api_v1.PodRunning {
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if condition.Type == api_v1.PodReady {
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status.RunningAndReady++
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}
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} else {
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if condition.Type == api_v1.PodScheduled &&
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condition.Status == api_v1.ConditionFalse &&
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condition.Reason == api_v1.PodReasonUnschedulable &&
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condition.LastTransitionTime.Add(UnschedulableThreshold).Before(currentTime) {
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status.Unschedulable++
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}
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}
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}
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result[fedObject.ClusterName] = status
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}
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}
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return result, nil
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}
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