fix(event handling): use internal pubsub for view update (#1118)

* start sub

* start implement subsciptions

* start subscription

* implementation for member done

* admin done

* fix: tests

* extend handlers

* prepary notification

* no errors in adminapi

* changed current sequence in all packages

* ignore mocks

* works

* subscriptions as singleton

* tests

* refactor: rename function scope var

internal/admin/repository/eventsourcing/handler/label_policy.go

@@ -2,37 +2,69 @@ package handler
 
 import (
 	"github.com/caos/logging"
-
-	"github.com/caos/zitadel/internal/eventstore/models"
+	"github.com/caos/zitadel/internal/eventstore"
 	es_models "github.com/caos/zitadel/internal/eventstore/models"
+	"github.com/caos/zitadel/internal/eventstore/query"
 	"github.com/caos/zitadel/internal/eventstore/spooler"
 	"github.com/caos/zitadel/internal/iam/repository/eventsourcing/model"
 	iam_model "github.com/caos/zitadel/internal/iam/repository/view/model"
 )
 
-type LabelPolicy struct {
-	handler
-}
-
 const (
 	labelPolicyTable = "adminapi.label_policies"
 )
 
+type LabelPolicy struct {
+	handler
+	subscription *eventstore.Subscription
+}
+
+func newLabelPolicy(handler handler) *LabelPolicy {
+	h := &LabelPolicy{
+		handler: handler,
+	}
+
+	h.subscribe()
+
+	return h
+}
+
+func (p *LabelPolicy) subscribe() {
+	p.subscription = p.es.Subscribe(p.AggregateTypes()...)
+	go func() {
+		for event := range p.subscription.Events {
+			query.ReduceEvent(p, event)
+		}
+	}()
+}
+
 func (p *LabelPolicy) ViewModel() string {
 	return labelPolicyTable
 }
 
-func (p *LabelPolicy) EventQuery() (*models.SearchQuery, error) {
-	sequence, err := p.view.GetLatestLabelPolicySequence()
+func (p *LabelPolicy) AggregateTypes() []es_models.AggregateType {
+	return []es_models.AggregateType{model.IAMAggregate}
+}
+
+func (p *LabelPolicy) EventQuery() (*es_models.SearchQuery, error) {
+	sequence, err := p.view.GetLatestLabelPolicySequence("")
 	if err != nil {
 		return nil, err
 	}
 	return es_models.NewSearchQuery().
-		AggregateTypeFilter(model.IAMAggregate).
+		AggregateTypeFilter(p.AggregateTypes()...).
 		LatestSequenceFilter(sequence.CurrentSequence), nil
 }
 
-func (p *LabelPolicy) Reduce(event *models.Event) (err error) {
+func (p *LabelPolicy) CurrentSequence(event *es_models.Event) (uint64, error) {
+	sequence, err := p.view.GetLatestLabelPolicySequence(string(event.AggregateType))
+	if err != nil {
+		return 0, err
+	}
+	return sequence.CurrentSequence, nil
+}
+
+func (p *LabelPolicy) Reduce(event *es_models.Event) (err error) {
 	switch event.AggregateType {
 	case model.IAMAggregate:
 		err = p.processLabelPolicy(event)
@@ -40,7 +72,7 @@ func (p *LabelPolicy) Reduce(event *models.Event) (err error) {
 	return err
 }
 
-func (p *LabelPolicy) processLabelPolicy(event *models.Event) (err error) {
+func (p *LabelPolicy) processLabelPolicy(event *es_models.Event) (err error) {
 	policy := new(iam_model.LabelPolicyView)
 	switch event.Type {
 	case model.LabelPolicyAdded:
@@ -52,15 +84,15 @@ func (p *LabelPolicy) processLabelPolicy(event *models.Event) (err error) {
 		}
 		err = policy.AppendEvent(event)
 	default:
-		return p.view.ProcessedLabelPolicySequence(event.Sequence, event.CreationDate)
+		return p.view.ProcessedLabelPolicySequence(event)
 	}
 	if err != nil {
 		return err
 	}
-	return p.view.PutLabelPolicy(policy, policy.Sequence, event.CreationDate)
+	return p.view.PutLabelPolicy(policy, event)
 }
 
-func (p *LabelPolicy) OnError(event *models.Event, err error) error {
+func (p *LabelPolicy) OnError(event *es_models.Event, err error) error {
 	logging.LogWithFields("SPOOL-Wj8sf", "id", event.AggregateID).WithError(err).Warn("something went wrong in label policy handler")
 	return spooler.HandleError(event, err, p.view.GetLatestLabelPolicyFailedEvent, p.view.ProcessedLabelPolicyFailedEvent, p.view.ProcessedLabelPolicySequence, p.errorCountUntilSkip)
 }