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notification_cleaner.go
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/
notification_cleaner.go
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/*
* Copyright 2018 The Service Manager Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package storage
import (
"context"
"errors"
"sync"
"time"
"github.com/Peripli/service-manager/pkg/util"
"github.com/Peripli/service-manager/pkg/log"
"github.com/Peripli/service-manager/pkg/query"
"github.com/Peripli/service-manager/pkg/types"
)
// NotificationCleaner schedules a go routine which cleans old notifications
type NotificationCleaner struct {
started bool
Storage Repository
Settings Settings
}
// Start schedules the cleaner. It cannot be used concurrently.
func (nc *NotificationCleaner) Start(ctx context.Context, group *sync.WaitGroup) error {
if nc.started {
return errors.New("notification cleaner already started")
}
nc.started = true
group.Add(1)
go func() {
defer func() {
nc.started = false
group.Done()
}()
cleanInterval := nc.Settings.Notification.CleanInterval
log.C(ctx).Infof("Scheduling notification cleaning every %s", cleanInterval.String())
for {
select {
case <-ctx.Done():
return
case <-time.After(cleanInterval):
nc.clean(ctx)
}
}
}()
return nil
}
func (nc *NotificationCleaner) clean(ctx context.Context) {
cleanTimestamp := time.Now().Add(-nc.Settings.Notification.KeepFor).Format(time.RFC3339)
log.C(ctx).Infof("Deleting notifications created before %s", cleanTimestamp)
q := query.ByField(query.LessThanOperator, "created_at", cleanTimestamp)
deletedNotifications, err := nc.Storage.Delete(ctx, types.NotificationType, q)
if err == util.ErrNotFoundInStorage {
log.C(ctx).Debug("no old notifications to delete")
} else if err != nil {
log.C(ctx).WithError(err).Error("could not delete old notifications")
} else {
log.C(ctx).Infof("successfully deleted %d old notifications", deletedNotifications.Len())
}
}