mirror of
https://github.com/offen/docker-volume-backup.git
synced 2024-11-10 00:30:29 +01:00
implement deletion of local backups
This commit is contained in:
parent
3f7c08d616
commit
29f8a078bc
38
src/main.go
38
src/main.go
@ -8,6 +8,8 @@ import (
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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@ -134,7 +136,6 @@ func (s *script) stopContainers() error {
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fmt.Printf("Stopping %d out of %d running containers\n", len(containersToStop), len(allContainers))
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if len(containersToStop) != 0 {
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fmt.Println("Stopping containers")
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for _, container := range s.stoppedContainers {
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if err := s.cli.ContainerStop(s.ctx, container.ID, nil); err != nil {
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return fmt.Errorf("stopContainers: error stopping container %s: %w", container.Names[0], err)
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@ -241,16 +242,49 @@ func (s *script) pruneOldBackups() error {
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if retention == "" {
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return nil
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}
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retentionDays, err := strconv.Atoi(retention)
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if err != nil {
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return fmt.Errorf("pruneOldBackups: error parsing BACKUP_RETENTION_DAYS as int: %w", err)
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}
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sleepFor, err := time.ParseDuration(os.Getenv("BACKUP_PRUNING_LEEWAY"))
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if err != nil {
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return fmt.Errorf("pruneBackups: error parsing given leeway value: %w", err)
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}
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time.Sleep(sleepFor)
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deadline := time.Now().AddDate(0, 0, -retentionDays)
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if bucket := os.Getenv("AWS_S3_BUCKET_NAME"); bucket != "" {
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}
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if archive := os.Getenv("BACKUP_ARCHIVE"); archive != "" {
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matches, err := filepath.Glob(
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path.Join(archive, fmt.Sprintf("%s%s", os.Getenv("BACKUP_PRUNING_PREFIX"), "*")),
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)
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if err != nil {
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return fmt.Errorf("pruneOldBackups: error looking up matching files: %w", err)
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}
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var candidates []os.FileInfo
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for _, match := range matches {
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fi, err := os.Stat(match)
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if err != nil {
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return fmt.Errorf("pruneOldBackups: error calling stat on file %s: %w", match, err)
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}
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if fi.ModTime().Before(deadline) {
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candidates = append(candidates, fi)
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}
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}
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if len(candidates) != len(matches) {
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for _, candidate := range candidates {
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if err := os.Remove(candidate.Name()); err != nil {
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return fmt.Errorf("pruneOldBackups: error deleting file %s: %w", candidate.Name(), err)
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}
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}
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} else if len(matches) != 0 {
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fmt.Println("Refusing to delete all backups. Check your configuration.")
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}
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}
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return nil
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}
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@ -23,12 +23,11 @@ services:
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AWS_ENDPOINT: minio:9000
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AWS_ENDPOINT_PROTO: http
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AWS_S3_BUCKET_NAME: backup
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BACKUP_FILENAME: test.tar.gz
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# BACKUP_FILENAME: test.tar.gz
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BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
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BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
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BACKUP_FORCE_PRUNE: ${BACKUP_FORCE_PRUNE:-}
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BACKUP_PRUNING_LEEWAY: 5s
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BACKUP_PRUNING_PREFIX: test
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# BACKUP_PRUNING_PREFIX: test
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volumes:
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- ./local:/archive
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- app_data:/backup/app_data:ro
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