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/auth/repository/eventsourcing/handler/machine_keys.go

@@ -5,73 +5,107 @@ import (
 
 	"github.com/caos/logging"
 
+	"github.com/caos/zitadel/internal/eventstore"
 	"github.com/caos/zitadel/internal/eventstore/models"
 	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/user/repository/eventsourcing/model"
 	usr_model "github.com/caos/zitadel/internal/user/repository/view/model"
 )
 
-type MachineKeys struct {
-	handler
-}
-
 const (
 	machineKeysTable = "auth.machine_keys"
 )
 
-func (d *MachineKeys) ViewModel() string {
+type MachineKeys struct {
+	handler
+	subscription *eventstore.Subscription
+}
+
+func newMachineKeys(handler handler) *MachineKeys {
+	h := &MachineKeys{
+		handler: handler,
+	}
+
+	h.subscribe()
+
+	return h
+}
+
+func (k *MachineKeys) subscribe() {
+	k.subscription = k.es.Subscribe(k.AggregateTypes()...)
+	go func() {
+		for event := range k.subscription.Events {
+			query.ReduceEvent(k, event)
+		}
+	}()
+}
+
+func (k *MachineKeys) ViewModel() string {
 	return machineKeysTable
 }
 
-func (d *MachineKeys) EventQuery() (*models.SearchQuery, error) {
-	sequence, err := d.view.GetLatestMachineKeySequence()
+func (_ *MachineKeys) AggregateTypes() []es_models.AggregateType {
+	return []es_models.AggregateType{model.UserAggregate}
+}
+
+func (k *MachineKeys) CurrentSequence(event *models.Event) (uint64, error) {
+	sequence, err := k.view.GetLatestMachineKeySequence(string(event.AggregateType))
+	if err != nil {
+		return 0, err
+	}
+	return sequence.CurrentSequence, nil
+}
+
+func (k *MachineKeys) EventQuery() (*es_models.SearchQuery, error) {
+	sequence, err := k.view.GetLatestMachineKeySequence("")
 	if err != nil {
 		return nil, err
 	}
 	return es_models.NewSearchQuery().
-		AggregateTypeFilter(model.UserAggregate).
+		AggregateTypeFilter(k.AggregateTypes()...).
 		LatestSequenceFilter(sequence.CurrentSequence), nil
 }
 
-func (d *MachineKeys) Reduce(event *models.Event) (err error) {
+func (k *MachineKeys) Reduce(event *es_models.Event) (err error) {
 	switch event.AggregateType {
 	case model.UserAggregate:
-		err = d.processMachineKeys(event)
+		err = k.processMachineKeys(event)
 	}
 	return err
 }
 
-func (d *MachineKeys) processMachineKeys(event *models.Event) (err error) {
+func (k *MachineKeys) processMachineKeys(event *es_models.Event) (err error) {
 	key := new(usr_model.MachineKeyView)
 	switch event.Type {
 	case model.MachineKeyAdded:
 		err = key.AppendEvent(event)
 		if key.ExpirationDate.Before(time.Now()) {
-			return d.view.ProcessedMachineKeySequence(event.Sequence, event.CreationDate)
+			return k.view.ProcessedMachineKeySequence(event)
 		}
 	case model.MachineKeyRemoved:
 		err = key.SetData(event)
 		if err != nil {
 			return err
 		}
-		return d.view.DeleteMachineKey(key.ID, event.Sequence, event.CreationDate)
+		return k.view.DeleteMachineKey(key.ID, event)
 	case model.UserRemoved:
-		return d.view.DeleteMachineKeysByUserID(event.AggregateID, event.Sequence, event.CreationDate)
+		return k.view.DeleteMachineKeysByUserID(event.AggregateID, event)
 	default:
-		return d.view.ProcessedMachineKeySequence(event.Sequence, event.CreationDate)
+		return k.view.ProcessedMachineKeySequence(event)
 	}
 	if err != nil {
 		return err
 	}
-	return d.view.PutMachineKey(key, key.Sequence, event.CreationDate)
+	return k.view.PutMachineKey(key, event)
 }
 
-func (d *MachineKeys) OnError(event *models.Event, err error) error {
+func (k *MachineKeys) OnError(event *es_models.Event, err error) error {
 	logging.LogWithFields("SPOOL-S9fe", "id", event.AggregateID).WithError(err).Warn("something went wrong in machine key handler")
-	return spooler.HandleError(event, err, d.view.GetLatestMachineKeyFailedEvent, d.view.ProcessedMachineKeyFailedEvent, d.view.ProcessedMachineKeySequence, d.errorCountUntilSkip)
+	return spooler.HandleError(event, err, k.view.GetLatestMachineKeyFailedEvent, k.view.ProcessedMachineKeyFailedEvent, k.view.ProcessedMachineKeySequence, k.errorCountUntilSkip)
 }
 
-func (d *MachineKeys) OnSuccess() error {
-	return spooler.HandleSuccess(d.view.UpdateMachineKeySpoolerRunTimestamp)
+func (k *MachineKeys) OnSuccess() error {
+	return spooler.HandleSuccess(k.view.UpdateMachineKeySpoolerRunTimestamp)
 }