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delete-expired-subscriptions.go
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delete-expired-subscriptions.go
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// Copyright (c) 2021 6 River Systems
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package actions
import (
"context"
"time"
"github.com/google/uuid"
"go.6river.tech/mmmbbb/ent"
"go.6river.tech/mmmbbb/ent/subscription"
"go.6river.tech/mmmbbb/logging"
)
type DeleteExpiredSubscriptions struct {
pruneAction
}
var _ Action[PruneCommonParams, PruneCommonResults] = (*DeleteExpiredSubscriptions)(nil)
func NewDeleteExpiredSubscriptions(params PruneCommonParams) *DeleteExpiredSubscriptions {
return &DeleteExpiredSubscriptions{
pruneAction: newPruneAction(params),
}
}
var DeleteExpiredSubscriptionsCounter, DeleteExpiredSubscriptionsHistogram = pruneMetrics("expired_subscriptions")
func (a *DeleteExpiredSubscriptions) Execute(ctx context.Context, tx *ent.Tx) error {
timer := startActionTimer(DeleteExpiredSubscriptionsHistogram, tx)
defer timer.Ended()
now := time.Now()
// NOTE: notification requires knowing the subs affected, so we require a
// specific MaxDelete for now. if ent could do limit on delete, plus returning
// clauses, then we could do this without the pre-query
subs, err := tx.Subscription.Query().
Where(
subscription.ExpiresAtLT(now),
subscription.DeletedAtIsNil(),
// NOTE: we don't use MinAge here: we could use it as a grace period, but
// that doesn't seem helpful
).
Limit(a.params.MaxDelete).
All(ctx)
if err != nil {
return err
}
ids := make([]uuid.UUID, len(subs))
logger := logging.GetLogger("actions/delete-expired-subscriptions")
for i, s := range subs {
ids[i] = s.ID
logger.Info().
Str("subscriptionName", s.Name).
Stringer("subscriptionID", s.ID).
Msg("deleting expired subscription")
}
numDeleted, err := tx.Subscription.Update().
Where(subscription.IDIn(ids...)).
SetDeletedAt(now).
ClearLive().
Save(ctx)
if err != nil {
return err
}
for _, sub := range subs {
NotifyModifySubscription(tx, sub.ID, sub.Name)
}
a.results = &PruneCommonResults{
NumDeleted: numDeleted,
}
timer.Succeeded(func() { DeleteExpiredSubscriptionsCounter.Add(float64(numDeleted)) })
return nil
}