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intervallist.go
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/
intervallist.go
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package testrunner
import (
"fmt"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sort"
)
//An IntervalList is a partitioning of (1...global end) into [start, end] pairs
type IntervalList []struct{start, end int64}
func (list *IntervalList) append(start, end int64) {
*list = append(*list, struct{start, end int64}{start, end})
}
func (list IntervalList) sort() {
sort.Slice(list, func(i, j int) bool {
return list[i].end < list[j].end
})
}
func (list IntervalList) validGivenEnd(end int64) bool {
var expectedStart int64 = 1
for _, interval := range list {
if interval.start != expectedStart {
return false
}
expectedStart = interval.end+1
}
return expectedStart == end+1
}
func (runner *TestRunner) LoadPreviousIntervals() (*IntervalList, error) {
podList, err := runner.kubeCli.CoreV1().Pods(runner.testNamespace).List(metav1.ListOptions{
LabelSelector: "knoci-test-name="+runner.testName,
})
if err != nil {
return nil, fmt.Errorf("error loading pods: %s", err.Error())
}
intervalList := new(IntervalList)
for _, pod := range podList.Items {
startTime, endTime, err := parsePodStartEndTests(&pod)
if err != nil {
return nil, err
}
intervalList.append(startTime, endTime)
}
intervalList.sort()
if !intervalList.validGivenEnd(runner.NumberOfTests) {
return nil, fmt.Errorf("the number of pods has changed")
}
return intervalList, nil
}