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condition.go
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condition.go
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package v1alpha1
import (
"fmt"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type ConditionType string
const (
ConditionSubscribed ConditionType = "Subscribed"
ConditionSubscriptionActive ConditionType = "Subscription active"
ConditionAPIRuleStatus ConditionType = "APIRule status"
ConditionWebhookCallStatus ConditionType = "Webhook call status"
ConditionPublisherProxyReady ConditionType = "Publisher Proxy Ready"
ConditionControllerReady ConditionType = "Subscription Controller Ready"
)
var allSubscriptionConditions = MakeSubscriptionConditions()
type Condition struct {
// Short description of the condition.
Type ConditionType `json:"type,omitempty"`
// Status of the condition. The value is either `True`, `False`, or `Unknown`.
Status corev1.ConditionStatus `json:"status"`
// Defines the date of the last condition status change.
LastTransitionTime metav1.Time `json:"lastTransitionTime,omitempty"`
// Defines the reason for the condition status change.
Reason ConditionReason `json:"reason,omitempty"`
// Provides more details about the condition status change.
Message string `json:"message,omitempty"`
}
type ConditionReason string
const (
// BEB Conditions.
ConditionReasonSubscriptionCreated ConditionReason = "BEB Subscription created"
ConditionReasonSubscriptionCreationFailed ConditionReason = "BEB Subscription creation failed"
ConditionReasonSubscriptionActive ConditionReason = "BEB Subscription active"
ConditionReasonSubscriptionNotActive ConditionReason = "BEB Subscription not active"
ConditionReasonSubscriptionDeleted ConditionReason = "BEB Subscription deleted"
ConditionReasonAPIRuleStatusReady ConditionReason = "APIRule status ready"
ConditionReasonAPIRuleStatusNotReady ConditionReason = "APIRule status not ready"
ConditionReasonWebhookCallStatus ConditionReason = "BEB Subscription webhook call no errors status"
ConditionReasonOauth2ClientSyncFailed ConditionReason = "Failed to sync OAuth2 Client Credentials"
// NATS Conditions.
ConditionReasonNATSSubscriptionActive ConditionReason = "NATS Subscription active"
ConditionReasonNATSSubscriptionNotActive ConditionReason = "NATS Subscription not active"
// Common backend Conditions.
ConditionReasonSubscriptionControllerReady ConditionReason = "Subscription controller started"
ConditionReasonSubscriptionControllerNotReady ConditionReason = "Subscription controller not ready"
ConditionReasonPublisherDeploymentReady ConditionReason = "Publisher proxy deployment ready"
ConditionReasonPublisherDeploymentNotReady ConditionReason = "Publisher proxy deployment not ready"
ConditionReasonBackendCRSyncFailed ConditionReason = "Backend CR sync failed"
ConditionReasonPublisherProxySyncFailed ConditionReason = "Publisher Proxy deployment sync failed"
ConditionReasonControllerStartFailed ConditionReason = "Starting the controller failed"
ConditionReasonControllerStopFailed ConditionReason = "Stopping the controller failed"
ConditionReasonPublisherProxySecretError ConditionReason = "Publisher proxy secret sync failed"
ConditionDuplicateSecrets ConditionReason = "Multiple eventing backend labeled secrets exist"
)
// initializeConditions sets unset conditions to Unknown.
func initializeConditions(initialConditions, currentConditions []Condition) []Condition {
givenConditions := make(map[ConditionType]Condition)
// create map of Condition per ConditionType
for _, condition := range currentConditions {
givenConditions[condition.Type] = condition
}
finalConditions := currentConditions
// check if every Condition is present in the current Conditions
for _, expectedCondition := range initialConditions {
if _, ok := givenConditions[expectedCondition.Type]; !ok {
// and add it if it is missing
finalConditions = append(finalConditions, expectedCondition)
}
}
return finalConditions
}
// InitializeConditions sets unset Subscription conditions to Unknown.
func (s *SubscriptionStatus) InitializeConditions() {
initialConditions := MakeSubscriptionConditions()
s.Conditions = initializeConditions(initialConditions, s.Conditions)
}
// InitializeConditions sets all the Backend conditions to true.
func (b *EventingBackendStatus) InitializeConditions() {
initialConditions := makeBackendConditions()
b.Conditions = initializeConditions(initialConditions, b.Conditions)
}
func (s SubscriptionStatus) IsReady() bool {
if !ContainSameConditionTypes(allSubscriptionConditions, s.Conditions) {
return false
}
// the subscription is ready if all its conditions are evaluated to true
for _, c := range s.Conditions {
if c.Status != corev1.ConditionTrue {
return false
}
}
return true
}
func (s SubscriptionStatus) FindCondition(conditionType ConditionType) *Condition {
for _, condition := range s.Conditions {
if conditionType == condition.Type {
return &condition
}
}
return nil
}
func (b EventingBackendStatus) FindCondition(conditionType ConditionType) *Condition {
for _, condition := range b.Conditions {
if conditionType == condition.Type {
return &condition
}
}
return nil
}
// ShouldUpdateReadyStatus checks if there is a mismatch between the
// subscription Ready Status and the Ready status of all the conditions.
func (s SubscriptionStatus) ShouldUpdateReadyStatus() bool {
if !s.Ready && s.IsReady() || s.Ready && !s.IsReady() {
return true
}
return false
}
// MakeSubscriptionConditions creates a map of all conditions which the Subscription should have.
func MakeSubscriptionConditions() []Condition {
conditions := []Condition{
{
Type: ConditionAPIRuleStatus,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionUnknown,
},
{
Type: ConditionSubscribed,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionUnknown,
},
{
Type: ConditionSubscriptionActive,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionUnknown,
},
{
Type: ConditionWebhookCallStatus,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionUnknown,
},
}
return conditions
}
func ContainSameConditionTypes(conditions1, conditions2 []Condition) bool {
if len(conditions1) != len(conditions2) {
return false
}
for _, condition := range conditions1 {
if !containConditionType(conditions2, condition.Type) {
return false
}
}
return true
}
func containConditionType(conditions []Condition, conditionType ConditionType) bool {
for _, condition := range conditions {
if condition.Type == conditionType {
return true
}
}
return false
}
func MakeCondition(conditionType ConditionType, reason ConditionReason, status corev1.ConditionStatus, message string) Condition {
return Condition{
Type: conditionType,
Status: status,
LastTransitionTime: metav1.Now(),
Reason: reason,
// TODO: https://github.com/kyma-project/kyma/issues/9770
Message: message,
}
}
func (s *SubscriptionStatus) IsConditionSubscribed() bool {
for _, condition := range s.Conditions {
if condition.Type == ConditionSubscribed && condition.Status == corev1.ConditionTrue {
return true
}
}
return false
}
func (s *SubscriptionStatus) IsConditionWebhookCall() bool {
for _, condition := range s.Conditions {
if condition.Type == ConditionWebhookCallStatus &&
(condition.Status == corev1.ConditionTrue || condition.Status == corev1.ConditionUnknown) {
return true
}
}
return false
}
func (s *SubscriptionStatus) GetConditionAPIRuleStatus() corev1.ConditionStatus {
for _, condition := range s.Conditions {
if condition.Type == ConditionAPIRuleStatus {
return condition.Status
}
}
return corev1.ConditionUnknown
}
func (s *SubscriptionStatus) SetConditionAPIRuleStatus(err error) {
reason := ConditionReasonAPIRuleStatusReady
status := corev1.ConditionTrue
message := ""
if err != nil {
reason = ConditionReasonAPIRuleStatusNotReady
status = corev1.ConditionFalse
message = err.Error()
}
newConditions := []Condition{MakeCondition(ConditionAPIRuleStatus, reason, status, message)}
for _, condition := range s.Conditions {
if condition.Type == ConditionAPIRuleStatus {
continue
}
newConditions = append(newConditions, condition)
}
s.Conditions = newConditions
}
func CreateMessageForConditionReasonSubscriptionCreated(bebName string) string {
return fmt.Sprintf("BEB-subscription-name=%s", bebName)
}
// makeBackendConditions creates a map of all conditions which the Backend should have.
func makeBackendConditions() []Condition {
conditions := []Condition{
{
Type: ConditionPublisherProxyReady,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionTrue,
Reason: ConditionReasonPublisherDeploymentReady,
},
{
Type: ConditionControllerReady,
LastTransitionTime: metav1.Now(),
Status: corev1.ConditionTrue,
Reason: ConditionReasonSubscriptionControllerReady,
},
}
return conditions
}
func (b *EventingBackendStatus) SetSubscriptionControllerReadyCondition(ready bool, reason ConditionReason, message string) {
status := corev1.ConditionFalse
if ready {
status = corev1.ConditionTrue
}
newConditions := []Condition{MakeCondition(ConditionControllerReady, reason, status, message)}
for _, condition := range b.Conditions {
if condition.Type == ConditionControllerReady {
continue
}
newConditions = append(newConditions, condition)
}
b.Conditions = newConditions
}
func (b *EventingBackendStatus) SetPublisherReadyCondition(ready bool, reason ConditionReason, message string) {
status := corev1.ConditionFalse
if ready {
status = corev1.ConditionTrue
}
newConditions := []Condition{MakeCondition(ConditionPublisherProxyReady, reason, status, message)}
for _, condition := range b.Conditions {
if condition.Type == ConditionPublisherProxyReady {
continue
}
newConditions = append(newConditions, condition)
}
b.Conditions = newConditions
}
func (b *EventingBackendStatus) IsSubscriptionControllerStatusReady() bool {
for _, condition := range b.Conditions {
if condition.Type == ConditionControllerReady {
return condition.Status == corev1.ConditionTrue
}
}
return false
}
func (b *EventingBackendStatus) IsPublisherStatusReady() bool {
for _, condition := range b.Conditions {
if condition.Type == ConditionPublisherProxyReady {
return condition.Status == corev1.ConditionTrue
}
}
return false
}
// ConditionsEquals checks if two list of conditions are equal.
func ConditionsEquals(existing, expected []Condition) bool {
// not equal if length is different
if len(existing) != len(expected) {
return false
}
// compile map of Conditions per ConditionType
existingMap := make(map[ConditionType]Condition, len(existing))
for _, value := range existing {
existingMap[value.Type] = value
}
for _, value := range expected {
if !ConditionEquals(existingMap[value.Type], value) {
return false
}
}
return true
}
// ConditionEquals checks if two conditions are equal.
func ConditionEquals(existing, expected Condition) bool {
isTypeEqual := existing.Type == expected.Type
isStatusEqual := existing.Status == expected.Status
isReasonEqual := existing.Reason == expected.Reason
isMessageEqual := existing.Message == expected.Message
if !isStatusEqual || !isReasonEqual || !isMessageEqual || !isTypeEqual {
return false
}
return true
}