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subscription_conversion.go
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subscription_conversion.go
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package v1alpha1
import (
"fmt"
"strconv"
"strings"
"github.com/kyma-project/kyma/components/eventing-controller/pkg/backend/eventtype"
"github.com/pkg/errors"
"sigs.k8s.io/controller-runtime/pkg/conversion"
"github.com/kyma-project/kyma/components/eventing-controller/api/v1alpha2"
)
const (
ErrorHubVersionMsg = "hub version is not the expected v1alpha2 version"
ErrorMultipleSourceMsg = "subscription contains more than 1 eventSource"
)
var v1alpha1TypeCleaner eventtype.Cleaner //nolint:gochecknoglobals // using global var because there is no runtime
// object to hold this instance.
func InitializeEventTypeCleaner(cleaner eventtype.Cleaner) {
v1alpha1TypeCleaner = cleaner
}
// ConvertTo converts this Subscription in version v1 to the Hub version v2.
func (src *Subscription) ConvertTo(dstRaw conversion.Hub) error {
dst, ok := dstRaw.(*v1alpha2.Subscription)
if !ok {
return errors.Errorf(ErrorHubVersionMsg)
}
return V1ToV2(src, dst)
}
// V1ToV2 copies the v1alpha1-type field values into v1alpha2-type field values.
func V1ToV2(src *Subscription, dst *v1alpha2.Subscription) error {
// ObjectMeta
dst.ObjectMeta = src.ObjectMeta
// SPEC fields
dst.Spec.ID = src.Spec.ID
dst.Spec.Sink = src.Spec.Sink
dst.Spec.Source = ""
src.setV2TypeMatching(dst)
// protocol fields
src.setV2ProtocolFields(dst)
// Types
if err := src.setV2SpecTypes(dst); err != nil {
return err
}
// Config
src.natsSpecConfigToV2(dst)
return nil
}
// ConvertFrom converts this Subscription from the Hub version (v2) to v1.
func (dst *Subscription) ConvertFrom(srcRaw conversion.Hub) error { //nolint:revive
src, ok := srcRaw.(*v1alpha2.Subscription)
if !ok {
return errors.Errorf(ErrorHubVersionMsg)
}
return V2ToV1(dst, src)
}
// V2ToV1 copies the v1alpha2-type field values into v1alpha1-type field values.
func V2ToV1(dst *Subscription, src *v1alpha2.Subscription) error {
// ObjectMeta
dst.ObjectMeta = src.ObjectMeta
dst.Spec.ID = src.Spec.ID
dst.Spec.Sink = src.Spec.Sink
dst.setV1ProtocolFields(src)
dst.Spec.Filter = &BEBFilters{
Filters: []*EventMeshFilter{},
}
for _, eventType := range src.Spec.Types {
filter := &EventMeshFilter{
EventSource: &Filter{
Property: "source",
Type: fmt.Sprint(v1alpha2.TypeMatchingExact),
Value: src.Spec.Source,
},
EventType: &Filter{
Type: fmt.Sprint(v1alpha2.TypeMatchingExact),
Property: "type",
Value: eventType,
},
}
dst.Spec.Filter.Filters = append(dst.Spec.Filter.Filters, filter)
}
if src.Spec.Config != nil {
if err := dst.natsSpecConfigToV1(src); err != nil {
return err
}
}
// Conditions
for _, condition := range src.Status.Conditions {
dst.Status.Conditions = append(dst.Status.Conditions, ConditionV2ToV1(condition))
}
dst.Status.Ready = src.Status.Ready
dst.setV1CleanEvenTypes(src)
dst.bebBackendStatusToV1(src)
dst.natsBackendStatusToV1(src)
return nil
}
// setV2TypeMatching sets the default typeMatching on the v1alpha2 Subscription version.
func (src *Subscription) setV2TypeMatching(dst *v1alpha2.Subscription) {
dst.Spec.TypeMatching = v1alpha2.TypeMatchingExact
}
// setV2ProtocolFields converts the protocol-related fields from v1alpha1 to v1alpha2 Subscription version.
func (src *Subscription) setV2ProtocolFields(dst *v1alpha2.Subscription) {
dst.Spec.Config = map[string]string{}
if src.Spec.Protocol != "" {
dst.Spec.Config[v1alpha2.Protocol] = src.Spec.Protocol
}
// protocol settings
if src.Spec.ProtocolSettings != nil {
if src.Spec.ProtocolSettings.ContentMode != nil {
dst.Spec.Config[v1alpha2.ProtocolSettingsContentMode] = *src.Spec.ProtocolSettings.ContentMode
}
if src.Spec.ProtocolSettings.ExemptHandshake != nil {
dst.Spec.Config[v1alpha2.ProtocolSettingsExemptHandshake] = fmt.Sprint(*src.Spec.ProtocolSettings.ExemptHandshake)
}
if src.Spec.ProtocolSettings.Qos != nil {
dst.Spec.Config[v1alpha2.ProtocolSettingsQos] = *src.Spec.ProtocolSettings.Qos
}
// webhookAuth fields
if src.Spec.ProtocolSettings.WebhookAuth != nil {
if src.Spec.ProtocolSettings.WebhookAuth.Type != "" {
dst.Spec.Config[v1alpha2.WebhookAuthType] = src.Spec.ProtocolSettings.WebhookAuth.Type
}
dst.Spec.Config[v1alpha2.WebhookAuthGrantType] = src.Spec.ProtocolSettings.WebhookAuth.GrantType
dst.Spec.Config[v1alpha2.WebhookAuthClientID] = src.Spec.ProtocolSettings.WebhookAuth.ClientID
dst.Spec.Config[v1alpha2.WebhookAuthClientSecret] = src.Spec.ProtocolSettings.WebhookAuth.ClientSecret
dst.Spec.Config[v1alpha2.WebhookAuthTokenURL] = src.Spec.ProtocolSettings.WebhookAuth.TokenURL
if src.Spec.ProtocolSettings.WebhookAuth.Scope != nil {
dst.Spec.Config[v1alpha2.WebhookAuthScope] = strings.Join(src.Spec.ProtocolSettings.WebhookAuth.Scope, ",")
}
}
}
}
func (src *Subscription) initializeProtocolSettingsIfNil() {
if src.Spec.ProtocolSettings == nil {
src.Spec.ProtocolSettings = &ProtocolSettings{}
}
}
func (src *Subscription) initializeWebhookAuthIfNil() {
src.initializeProtocolSettingsIfNil()
if src.Spec.ProtocolSettings.WebhookAuth == nil {
src.Spec.ProtocolSettings.WebhookAuth = &WebhookAuth{}
}
}
// setV1ProtocolFields converts the protocol-related fields from v1alpha1 to v1alpha2 Subscription version.
func (src *Subscription) setV1ProtocolFields(dst *v1alpha2.Subscription) {
if protocol, ok := dst.Spec.Config[v1alpha2.Protocol]; ok {
src.Spec.Protocol = protocol
}
if currentMode, ok := dst.Spec.Config[v1alpha2.ProtocolSettingsContentMode]; ok {
src.initializeProtocolSettingsIfNil()
src.Spec.ProtocolSettings.ContentMode = ¤tMode
}
if qos, ok := dst.Spec.Config[v1alpha2.ProtocolSettingsQos]; ok {
src.initializeProtocolSettingsIfNil()
src.Spec.ProtocolSettings.Qos = &qos
}
if exemptHandshake, ok := dst.Spec.Config[v1alpha2.ProtocolSettingsExemptHandshake]; ok {
handshake, err := strconv.ParseBool(exemptHandshake)
if err != nil {
handshake = true
}
src.initializeProtocolSettingsIfNil()
src.Spec.ProtocolSettings.ExemptHandshake = &handshake
}
if authType, ok := dst.Spec.Config[v1alpha2.WebhookAuthType]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.Type = authType
}
if grantType, ok := dst.Spec.Config[v1alpha2.WebhookAuthGrantType]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.GrantType = grantType
}
if clientID, ok := dst.Spec.Config[v1alpha2.WebhookAuthClientID]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.ClientID = clientID
}
if secret, ok := dst.Spec.Config[v1alpha2.WebhookAuthClientSecret]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.ClientSecret = secret
}
if token, ok := dst.Spec.Config[v1alpha2.WebhookAuthTokenURL]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.TokenURL = token
}
if scope, ok := dst.Spec.Config[v1alpha2.WebhookAuthScope]; ok {
src.initializeWebhookAuthIfNil()
src.Spec.ProtocolSettings.WebhookAuth.Scope = strings.Split(scope, ",")
}
}
// setV2SpecTypes sets event types in the Subscription Spec in the v1alpha2 way.
func (src *Subscription) setV2SpecTypes(dst *v1alpha2.Subscription) error {
if v1alpha1TypeCleaner == nil {
return errors.New("event type cleaner is not initialized")
}
if src.Spec.Filter != nil {
for _, filter := range src.Spec.Filter.Filters {
if dst.Spec.Source == "" {
dst.Spec.Source = filter.EventSource.Value
}
if dst.Spec.Source != "" && filter.EventSource.Value != dst.Spec.Source {
return errors.New(ErrorMultipleSourceMsg)
}
// clean the type and merge segments if needed
cleanedType, err := v1alpha1TypeCleaner.Clean(filter.EventType.Value)
if err != nil {
return err
}
// add the type to spec
dst.Spec.Types = append(dst.Spec.Types, cleanedType)
}
}
return nil
}
// natsSpecConfigToV2 converts the v1alpha2 Spec config to v1alpha1.
func (src *Subscription) natsSpecConfigToV1(dst *v1alpha2.Subscription) error {
if maxInFlightMessages, ok := dst.Spec.Config[v1alpha2.MaxInFlightMessages]; ok {
intVal, err := strconv.Atoi(maxInFlightMessages)
if err != nil {
return err
}
src.Spec.Config = &SubscriptionConfig{
MaxInFlightMessages: intVal,
}
}
return nil
}
// natsSpecConfigToV2 converts the hardcoded v1alpha1 Spec config to v1alpha2 generic config version.
func (src *Subscription) natsSpecConfigToV2(dst *v1alpha2.Subscription) {
if src.Spec.Config != nil {
if dst.Spec.Config == nil {
dst.Spec.Config = map[string]string{}
}
dst.Spec.Config[v1alpha2.MaxInFlightMessages] = fmt.Sprint(src.Spec.Config.MaxInFlightMessages)
}
}
// setBEBBackendStatus moves the BEB-related to Backend fields of the Status in the v1alpha2.
func (src *Subscription) bebBackendStatusToV1(dst *v1alpha2.Subscription) {
src.Status.Ev2hash = dst.Status.Backend.Ev2hash
src.Status.Emshash = dst.Status.Backend.EventMeshHash
src.Status.ExternalSink = dst.Status.Backend.ExternalSink
src.Status.FailedActivation = dst.Status.Backend.FailedActivation
src.Status.APIRuleName = dst.Status.Backend.APIRuleName
if dst.Status.Backend.EventMeshSubscriptionStatus != nil {
src.Status.EmsSubscriptionStatus = &EmsSubscriptionStatus{
SubscriptionStatus: dst.Status.Backend.EventMeshSubscriptionStatus.Status,
SubscriptionStatusReason: dst.Status.Backend.EventMeshSubscriptionStatus.StatusReason,
LastSuccessfulDelivery: dst.Status.Backend.EventMeshSubscriptionStatus.LastSuccessfulDelivery,
LastFailedDelivery: dst.Status.Backend.EventMeshSubscriptionStatus.LastFailedDelivery,
LastFailedDeliveryReason: dst.Status.Backend.EventMeshSubscriptionStatus.LastFailedDeliveryReason,
}
}
}
// natsBackendStatusToV1 moves the NATS-related to Backend fields of the Status in the v1alpha2.
func (src *Subscription) natsBackendStatusToV1(dst *v1alpha2.Subscription) {
if maxInFlightMessages, ok := dst.Spec.Config[v1alpha2.MaxInFlightMessages]; ok {
intVal, err := strconv.Atoi(maxInFlightMessages)
if err == nil {
src.Status.Config = &SubscriptionConfig{}
src.Status.Config.MaxInFlightMessages = intVal
}
}
}
// setV1CleanEvenTypes sets the clean event types to v1alpha1 Subscription Status.
func (src *Subscription) setV1CleanEvenTypes(dst *v1alpha2.Subscription) {
src.Status.InitializeCleanEventTypes()
for _, eventType := range dst.Status.Types {
src.Status.CleanEventTypes = append(src.Status.CleanEventTypes, eventType.CleanType)
}
}
// ConditionV2ToV1 converts the v1alpha2 Condition to v1alpha1 version.
func ConditionV2ToV1(condition v1alpha2.Condition) Condition {
return Condition{
Type: ConditionType(condition.Type),
Status: condition.Status,
LastTransitionTime: condition.LastTransitionTime,
Reason: ConditionReason(condition.Reason),
Message: condition.Message,
}
}