feat: add quotas (#4779)

adds possibilities to cap authenticated requests and execution seconds of actions on a defined intervall

internal/command/quota_notifications.go

@@ -0,0 +1,59 @@
+package command
+
+import (
+	"context"
+	"math"
+	"time"
+
+	"github.com/zitadel/zitadel/internal/eventstore"
+	"github.com/zitadel/zitadel/internal/repository/quota"
+)
+
+func (c *Commands) GetDueQuotaNotifications(ctx context.Context, config *quota.AddedEvent, periodStart time.Time, usedAbs uint64) ([]*quota.NotifiedEvent, error) {
+	if len(config.Notifications) == 0 {
+		return nil, nil
+	}
+
+	aggregate := config.Aggregate()
+	wm, err := c.getQuotaNotificationsWriteModel(ctx, aggregate, periodStart)
+	if err != nil {
+		return nil, err
+	}
+
+	usedRel := uint16(math.Floor(float64(usedAbs*100) / float64(config.Amount)))
+
+	var dueNotifications []*quota.NotifiedEvent
+	for _, notification := range config.Notifications {
+		if notification.Percent > usedRel {
+			continue
+		}
+
+		threshold := notification.Percent
+		if notification.Repeat {
+			threshold = uint16(math.Min(1, math.Floor(float64(usedRel)/float64(notification.Percent)))) * notification.Percent
+		}
+
+		if wm.latestNotifiedThresholds[notification.ID] < threshold {
+			dueNotifications = append(
+				dueNotifications,
+				quota.NewNotifiedEvent(
+					ctx,
+					&aggregate,
+					config.Unit,
+					notification.ID,
+					notification.CallURL,
+					periodStart,
+					threshold,
+					usedAbs,
+				),
+			)
+		}
+	}
+
+	return dueNotifications, nil
+}
+
+func (c *Commands) getQuotaNotificationsWriteModel(ctx context.Context, aggregate eventstore.Aggregate, periodStart time.Time) (*quotaNotificationsWriteModel, error) {
+	wm := newQuotaNotificationsWriteModel(aggregate.ID, aggregate.InstanceID, aggregate.ResourceOwner, periodStart)
+	return wm, c.eventstore.FilterToQueryReducer(ctx, wm)
+}