mirror of
https://github.com/offen/docker-volume-backup.git
synced 2024-11-10 00:30:29 +01:00
67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
// Copyright 2024 - offen.software <hioffen@posteo.de>
|
|
// SPDX-License-Identifier: MPL-2.0
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"slices"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/offen/docker-volume-backup/internal/errwrap"
|
|
"golang.org/x/sync/errgroup"
|
|
)
|
|
|
|
// pruneBackups rotates away backups from local and remote storages using
|
|
// the given configuration. In case the given configuration would delete all
|
|
// backups, it does nothing instead and logs a warning.
|
|
func (s *script) pruneBackups() error {
|
|
if s.c.BackupRetentionDays < 0 {
|
|
return nil
|
|
}
|
|
|
|
deadline := time.Now().AddDate(0, 0, -int(s.c.BackupRetentionDays)).Add(s.c.BackupPruningLeeway)
|
|
|
|
eg := errgroup.Group{}
|
|
for _, backend := range s.storages {
|
|
b := backend
|
|
eg.Go(func() error {
|
|
if skipPrune(b.Name(), s.c.BackupSkipBackendsFromPrune) {
|
|
s.logger.Info(
|
|
fmt.Sprintf("Skipping pruning for backend `%s`.", b.Name()),
|
|
)
|
|
return nil
|
|
}
|
|
stats, err := b.Prune(deadline, s.c.BackupPruningPrefix)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
s.stats.Lock()
|
|
s.stats.Storages[b.Name()] = StorageStats{
|
|
Total: stats.Total,
|
|
Pruned: stats.Pruned,
|
|
}
|
|
s.stats.Unlock()
|
|
return nil
|
|
})
|
|
}
|
|
|
|
if err := eg.Wait(); err != nil {
|
|
return errwrap.Wrap(err, "error pruning backups")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// skipPrune returns true if the given backend name is contained in the
|
|
// list of skipped backends.
|
|
func skipPrune(name string, skippedBackends []string) bool {
|
|
return slices.ContainsFunc(
|
|
skippedBackends,
|
|
func(b string) bool {
|
|
return strings.EqualFold(b, name) // ignore case on both sides
|
|
},
|
|
)
|
|
}
|