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condition.go
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condition.go
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package status
import (
"fmt"
"sort"
"strings"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
configv1 "github.com/openshift/api/config/v1"
operatorv1 "github.com/openshift/api/operator/v1"
)
// UnionCondition returns a single operator condition that is the union of multiple operator conditions.
//
// defaultConditionStatus indicates whether you want to merge all Falses or merge all Trues. For instance, Failures merge
// on true, but Available merges on false. Thing of it like an anti-default.
//
// If inertia is non-nil, then resist returning a condition with a status opposite the defaultConditionStatus.
func UnionCondition(conditionType string, defaultConditionStatus operatorv1.ConditionStatus, inertia Inertia, allConditions ...operatorv1.OperatorCondition) operatorv1.OperatorCondition {
var oppositeConditionStatus operatorv1.ConditionStatus
if defaultConditionStatus == operatorv1.ConditionTrue {
oppositeConditionStatus = operatorv1.ConditionFalse
} else {
oppositeConditionStatus = operatorv1.ConditionTrue
}
interestingConditions := []operatorv1.OperatorCondition{}
badConditions := []operatorv1.OperatorCondition{}
badConditionStatus := operatorv1.ConditionUnknown
for _, condition := range allConditions {
if strings.HasSuffix(condition.Type, conditionType) {
interestingConditions = append(interestingConditions, condition)
if condition.Status != defaultConditionStatus {
badConditions = append(badConditions, condition)
if condition.Status == oppositeConditionStatus {
badConditionStatus = oppositeConditionStatus
}
}
}
}
sort.Sort(byConditionType(badConditions))
unionedCondition := operatorv1.OperatorCondition{Type: conditionType, Status: operatorv1.ConditionUnknown}
if len(interestingConditions) == 0 {
unionedCondition.Status = operatorv1.ConditionUnknown
unionedCondition.Reason = "NoData"
return unionedCondition
}
var elderBadConditions []operatorv1.OperatorCondition
if inertia == nil {
elderBadConditions = badConditions
} else {
now := time.Now()
for _, condition := range badConditions {
if condition.LastTransitionTime.Time.Before(now.Add(-inertia(condition))) {
elderBadConditions = append(elderBadConditions, condition)
}
}
}
if len(elderBadConditions) == 0 {
unionedCondition.Status = defaultConditionStatus
unionedCondition.Message = unionMessage(interestingConditions)
if unionedCondition.Message == "" {
unionedCondition.Message = "All is well"
}
unionedCondition.Reason = "AsExpected"
unionedCondition.LastTransitionTime = latestTransitionTime(interestingConditions)
return unionedCondition
}
// at this point we have bad conditions
unionedCondition.Status = badConditionStatus
unionedCondition.Message = unionMessage(badConditions)
unionedCondition.Reason = unionReason(conditionType, badConditions)
unionedCondition.LastTransitionTime = latestTransitionTime(badConditions)
return unionedCondition
}
// UnionClusterCondition returns a single cluster operator condition that is the union of multiple operator conditions.
//
// defaultConditionStatus indicates whether you want to merge all Falses or merge all Trues. For instance, Failures merge
// on true, but Available merges on false. Thing of it like an anti-default.
//
// If inertia is non-nil, then resist returning a condition with a status opposite the defaultConditionStatus.
func UnionClusterCondition(conditionType configv1.ClusterStatusConditionType, defaultConditionStatus operatorv1.ConditionStatus, inertia Inertia, allConditions ...operatorv1.OperatorCondition) configv1.ClusterOperatorStatusCondition {
cnd := UnionCondition(string(conditionType), defaultConditionStatus, inertia, allConditions...)
return OperatorConditionToClusterOperatorCondition(cnd)
}
func OperatorConditionToClusterOperatorCondition(condition operatorv1.OperatorCondition) configv1.ClusterOperatorStatusCondition {
return configv1.ClusterOperatorStatusCondition{
Type: configv1.ClusterStatusConditionType(condition.Type),
Status: configv1.ConditionStatus(condition.Status),
LastTransitionTime: condition.LastTransitionTime,
Reason: condition.Reason,
Message: condition.Message,
}
}
func latestTransitionTime(conditions []operatorv1.OperatorCondition) metav1.Time {
latestTransitionTime := metav1.Time{}
for _, condition := range conditions {
if latestTransitionTime.Before(&condition.LastTransitionTime) {
latestTransitionTime = condition.LastTransitionTime
}
}
return latestTransitionTime
}
func uniq(s []string) []string {
seen := make(map[string]struct{}, len(s))
j := 0
for _, v := range s {
if _, ok := seen[v]; ok {
continue
}
seen[v] = struct{}{}
s[j] = v
j++
}
return s[:j]
}
func unionMessage(conditions []operatorv1.OperatorCondition) string {
messages := []string{}
for _, condition := range conditions {
if len(condition.Message) == 0 {
continue
}
for _, message := range uniq(strings.Split(condition.Message, "\n")) {
messages = append(messages, fmt.Sprintf("%s: %s", condition.Type, message))
}
}
return strings.Join(messages, "\n")
}
func unionReason(unionConditionType string, conditions []operatorv1.OperatorCondition) string {
typeReasons := []string{}
for _, curr := range conditions {
currType := curr.Type[:len(curr.Type)-len(unionConditionType)]
if len(curr.Reason) > 0 {
typeReasons = append(typeReasons, currType+"_"+curr.Reason)
} else {
typeReasons = append(typeReasons, currType)
}
}
sort.Strings(typeReasons)
return strings.Join(typeReasons, "::")
}
type byConditionType []operatorv1.OperatorCondition
var _ sort.Interface = byConditionType{}
func (s byConditionType) Len() int {
return len(s)
}
func (s byConditionType) Less(i, j int) bool {
return s[i].Type < s[j].Type
}
func (s byConditionType) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}