Update existing tests and test actual pruning

* Bump github.com/Azure/azure-sdk-for-go/sdk/storage/azblob

Bumps [github.com/Azure/azure-sdk-for-go/sdk/storage/azblob](https://github.com/Azure/azure-sdk-for-go) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-go/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-go/blob/main/documentation/release.md)
- [Commits](https://github.com/Azure/azure-sdk-for-go/compare/sdk/storage/azblob/v1.4.1...sdk/azcore/v1.5.0)

---
updated-dependencies:
- dependency-name: github.com/Azure/azure-sdk-for-go/sdk/storage/azblob
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update azurite image to match updated client capabilities

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Frederik Ring <frederik.ring@gmail.com>

.github/FUNDING.yml

@@ -1,3 +0,0 @@
-github: offen
-patreon: offen
-

.github/workflows/deploy-docs.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           JEKYLL_ENV: production
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           path: 'docs/_site/'
 
@@ -52,4 +52,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4

.github/workflows/golangci-lint.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: false
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
@@ -26,7 +26,7 @@ jobs:
           # Require: The version of golangci-lint to use.
           # When `install-mode` is `binary` (default) the value can be v1.2 or v1.2.3 or `latest` to use the latest version.
           # When `install-mode` is `goinstall` the value can be v1.2.3, `latest`, or the hash of a commit.
-          version: v1.57
+          version: v1.60
 
           # Optional: working directory, useful for monorepos
           # working-directory: somedir

.github/workflows/unit.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.22.x'
+          go-version: '1.23.x'
       - name: Install dependencies
         run: go mod download
       - name: Test with the Go CLI

.golangci.yml

@@ -5,4 +5,5 @@ linters:
     - staticcheck
     - govet
 output:
-  format: github-actions
+  formats:
+    - format: colored-line-number

Dockerfile

@@ -1,7 +1,7 @@
 # Copyright 2022 - offen.software <hioffen@posteo.de>
 # SPDX-License-Identifier: MPL-2.0
 
-FROM golang:1.22-alpine as builder
+FROM golang:1.23-alpine as builder
 
 WORKDIR /app
 COPY . .
@@ -9,7 +9,7 @@ RUN go mod download
 WORKDIR /app/cmd/backup
 RUN go build -o backup .
 
-FROM alpine:3.20
+FROM alpine:3.21
 
 WORKDIR /root
 

README.md

@@ -76,7 +76,7 @@ docker run --rm \
   offen/docker-volume-backup:v2
 ```
 
-Alternatively, pass a `--env-file` in order to use a full config as described below.
+Alternatively, pass a `--env-file` in order to use a full config as described [in the docs](https://offen.github.io/docker-volume-backup/reference/).
 
 ---
 

cmd/backup/config.go

@@ -38,6 +38,7 @@ type Config struct {
 	BackupArchive                 string          `split_words:"true" default:"/archive"`
 	BackupCronExpression          string          `split_words:"true" default:"@daily"`
 	BackupRetentionDays           int32           `split_words:"true" default:"-1"`
+	BackupRetentionPeriod         time.Duration   `split_words:"true"`
 	BackupPruningLeeway           time.Duration   `split_words:"true" default:"1m"`
 	BackupPruningPrefix           string          `split_words:"true"`
 	BackupStopContainerLabel      string          `split_words:"true"`
@@ -48,6 +49,8 @@ type Config struct {
 	BackupSkipBackendsFromPrune   []string        `split_words:"true"`
 	GpgPassphrase                 string          `split_words:"true"`
 	GpgPublicKeyRing              string          `split_words:"true"`
+	AgePassphrase                 string          `split_words:"true"`
+	AgePublicKeys                 []string        `split_words:"true"`
 	NotificationURLs              []string        `envconfig:"NOTIFICATION_URLS"`
 	NotificationLevel             string          `split_words:"true" default:"error"`
 	EmailNotificationRecipient    string          `split_words:"true"`

cmd/backup/encrypt_archive.go

@@ -11,109 +11,191 @@ import (
 	"os"
 	"path"
 
+	"filippo.io/age"
 	"github.com/ProtonMail/go-crypto/openpgp/armor"
 	openpgp "github.com/ProtonMail/go-crypto/openpgp/v2"
 	"github.com/offen/docker-volume-backup/internal/errwrap"
 )
 
-func (s *script) encryptAsymmetrically(outFile *os.File) (io.WriteCloser, func() error, error) {
-
-	entityList, err := openpgp.ReadArmoredKeyRing(bytes.NewReader([]byte(s.c.GpgPublicKeyRing)))
-	if err != nil {
-		return nil, nil, errwrap.Wrap(err, "error parsing armored keyring")
+func countTrue(b ...bool) int {
+	c := int(0)
+	for _, v := range b {
+		if v {
+			c++
 		}
-
-	armoredWriter, err := armor.Encode(outFile, "PGP MESSAGE", nil)
-	if err != nil {
-		return nil, nil, errwrap.Wrap(err, "error preparing encryption")
 	}
-
-	_, name := path.Split(s.file)
-	dst, err := openpgp.Encrypt(armoredWriter, entityList, nil, nil, &openpgp.FileHints{
-		FileName: name,
-	}, nil)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	return dst, func() error {
-		if err := dst.Close(); err != nil {
-			return err
-		}
-		return armoredWriter.Close()
-	}, err
-}
-
-func (s *script) encryptSymmetrically(outFile *os.File) (io.WriteCloser, func() error, error) {
-
-	_, name := path.Split(s.file)
-	dst, err := openpgp.SymmetricallyEncrypt(outFile, []byte(s.c.GpgPassphrase), &openpgp.FileHints{
-		FileName: name,
-	}, nil)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	return dst, dst.Close, nil
+	return c
 }
 
 // encryptArchive encrypts the backup file using PGP and the configured passphrase or publickey(s).
 // In case no passphrase or publickey is given it returns early, leaving the backup file
 // untouched.
 func (s *script) encryptArchive() error {
-
-	var encrypt func(outFile *os.File) (io.WriteCloser, func() error, error)
-	var cleanUpErr error
-
-	switch {
-	case s.c.GpgPassphrase != "" && s.c.GpgPublicKeyRing != "":
-		return errwrap.Wrap(nil, "error in selecting asymmetric and symmetric encryption methods: conflicting env vars are set")
-	case s.c.GpgPassphrase != "":
-		encrypt = s.encryptSymmetrically
-	case s.c.GpgPublicKeyRing != "":
-		encrypt = s.encryptAsymmetrically
+	useGPGSymmetric := s.c.GpgPassphrase != ""
+	useGPGAsymmetric := s.c.GpgPublicKeyRing != ""
+	useAgeSymmetric := s.c.AgePassphrase != ""
+	useAgeAsymmetric := len(s.c.AgePublicKeys) > 0
+	switch nconfigured := countTrue(
+		useGPGSymmetric,
+		useGPGAsymmetric,
+		useAgeSymmetric,
+		useAgeAsymmetric,
+	); nconfigured {
+	case 0:
+		return nil
+	case 1:
+		// ok!
 	default:
+		return fmt.Errorf(
+			"error in selecting archive encryption method: expected 0 or 1 to be configured, %d methods are configured",
+			nconfigured,
+		)
+	}
+
+	if useGPGSymmetric {
+		return s.encryptWithGPGSymmetric()
+	} else if useGPGAsymmetric {
+		return s.encryptWithGPGAsymmetric()
+	} else if useAgeSymmetric || useAgeAsymmetric {
+		ar, err := s.getConfiguredAgeRecipients()
+		if err != nil {
+			return errwrap.Wrap(err, "failed to get configured age recipients")
+		}
+		return s.encryptWithAge(ar)
+	}
 	return nil
 }
 
-	gpgFile := fmt.Sprintf("%s.gpg", s.file)
+func (s *script) getConfiguredAgeRecipients() ([]age.Recipient, error) {
+	if s.c.AgePassphrase == "" && len(s.c.AgePublicKeys) == 0 {
+		return nil, fmt.Errorf("no age recipients configured")
+	}
+	recipients := []age.Recipient{}
+	if len(s.c.AgePublicKeys) > 0 {
+		for _, pk := range s.c.AgePublicKeys {
+			pkr, err := age.ParseX25519Recipient(pk)
+			if err != nil {
+				return nil, errwrap.Wrap(err, "failed to parse age public key")
+			}
+			recipients = append(recipients, pkr)
+		}
+	}
+	if s.c.AgePassphrase != "" {
+		if len(recipients) != 0 {
+			return nil, fmt.Errorf("age encryption must only be enabled via passphrase or public key, not both")
+		}
+
+		r, err := age.NewScryptRecipient(s.c.AgePassphrase)
+		if err != nil {
+			return nil, errwrap.Wrap(err, "failed to create scrypt identity from age passphrase")
+		}
+		recipients = append(recipients, r)
+	}
+	return recipients, nil
+}
+
+func (s *script) encryptWithAge(rec []age.Recipient) error {
+	return s.doEncrypt("age", func(ciphertextWriter io.Writer) (io.WriteCloser, error) {
+		return age.Encrypt(ciphertextWriter, rec...)
+	})
+}
+
+func (s *script) encryptWithGPGSymmetric() error {
+	return s.doEncrypt("gpg", func(ciphertextWriter io.Writer) (io.WriteCloser, error) {
+		_, name := path.Split(s.file)
+		return openpgp.SymmetricallyEncrypt(ciphertextWriter, []byte(s.c.GpgPassphrase), &openpgp.FileHints{
+			FileName: name,
+		}, nil)
+	})
+}
+
+type closeAllWriter struct {
+	io.Writer
+	closers []io.Closer
+}
+
+func (c *closeAllWriter) Close() (err error) {
+	for _, cl := range c.closers {
+		err = errors.Join(err, cl.Close())
+	}
+	return
+}
+
+var _ io.WriteCloser = (*closeAllWriter)(nil)
+
+func (s *script) encryptWithGPGAsymmetric() error {
+	return s.doEncrypt("gpg", func(ciphertextWriter io.Writer) (_ io.WriteCloser, outerr error) {
+		entityList, err := openpgp.ReadArmoredKeyRing(bytes.NewReader([]byte(s.c.GpgPublicKeyRing)))
+		if err != nil {
+			return nil, errwrap.Wrap(err, "error parsing armored keyring")
+		}
+
+		armoredWriter, err := armor.Encode(ciphertextWriter, "PGP MESSAGE", nil)
+		if err != nil {
+			return nil, errwrap.Wrap(err, "error preparing encryption")
+		}
+		defer func() {
+			if outerr != nil {
+				_ = armoredWriter.Close()
+			}
+		}()
+
+		_, name := path.Split(s.file)
+		encWriter, err := openpgp.Encrypt(armoredWriter, entityList, nil, nil, &openpgp.FileHints{
+			FileName: name,
+		}, nil)
+		if err != nil {
+			return nil, err
+		}
+		return &closeAllWriter{
+			Writer:  encWriter,
+			closers: []io.Closer{encWriter, armoredWriter},
+		}, nil
+	})
+}
+
+func (s *script) doEncrypt(
+	extension string,
+	encryptor func(ciphertextWriter io.Writer) (io.WriteCloser, error),
+) (outerr error) {
+	encFile := fmt.Sprintf("%s.%s", s.file, extension)
 	s.registerHook(hookLevelPlumbing, func(error) error {
-		if err := remove(gpgFile); err != nil {
-			return errwrap.Wrap(err, "error removing gpg file")
+		if err := remove(encFile); err != nil {
+			return errwrap.Wrap(err, "error removing encrypted file")
 		}
 		s.logger.Info(
-			fmt.Sprintf("Removed GPG file `%s`.", gpgFile),
+			fmt.Sprintf("Removed encrypted file `%s`.", encFile),
 		)
 		return nil
 	})
 
-	outFile, err := os.Create(gpgFile)
+	outFile, err := os.Create(encFile)
 	if err != nil {
 		return errwrap.Wrap(err, "error opening out file")
 	}
 	defer func() {
 		if err := outFile.Close(); err != nil {
-			cleanUpErr = errors.Join(cleanUpErr, errwrap.Wrap(err, "error closing out file"))
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing out file"))
 		}
 	}()
 
-	dst, dstCloseCallback, err := encrypt(outFile)
+	dst, err := encryptor(outFile)
 	if err != nil {
 		return errwrap.Wrap(err, "error encrypting backup file")
 	}
 	defer func() {
-		if err := dstCloseCallback(); err != nil {
-			cleanUpErr = errors.Join(cleanUpErr, errwrap.Wrap(err, "error closing encrypted backup file"))
+		if err := dst.Close(); err != nil {
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing encrypted backup file"))
 		}
 	}()
 
 	src, err := os.Open(s.file)
 	if err != nil {
-		return errwrap.Wrap(err, fmt.Sprintf("error opening backup file `%s`", s.file))
+		return errwrap.Wrap(err, fmt.Sprintf("error opening backup file %q", s.file))
 	}
 	defer func() {
 		if err := src.Close(); err != nil {
-			cleanUpErr = errors.Join(cleanUpErr, errwrap.Wrap(err, "error closing backup file"))
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing backup file"))
 		}
 	}()
 
@@ -121,9 +203,10 @@ func (s *script) encryptArchive() error {
 		return errwrap.Wrap(err, "error writing ciphertext to file")
 	}
 
-	s.file = gpgFile
+	s.file = encFile
 	s.logger.Info(
-		fmt.Sprintf("Encrypted backup using gpg, saving as `%s`.", s.file),
+		fmt.Sprintf("Encrypted backup using %q, saving as %q", extension, s.file),
 	)
-	return cleanUpErr
+
+	return
 }

cmd/backup/exec.go

@@ -24,10 +24,18 @@ import (
 )
 
 func (s *script) exec(containerRef string, command string, user string) ([]byte, []byte, error) {
-	args, _ := argv.Argv(command, nil, nil)
+	args, err := argv.Argv(command, nil, nil)
+	if err != nil {
+		return nil, nil, errwrap.Wrap(err, fmt.Sprintf("error parsing argv from '%s'", command))
+	}
+	if len(args) == 0 {
+		return nil, nil, errwrap.Wrap(nil, "received unexpected empty command")
+	}
+
 	commandEnv := []string{
 		fmt.Sprintf("COMMAND_RUNTIME_ARCHIVE_FILEPATH=%s", s.file),
 	}
+
 	execID, err := s.cli.ContainerExecCreate(context.Background(), containerRef, container.ExecOptions{
 		Cmd:          args[0],
 		AttachStdin:  true,

cmd/backup/prune_backups.go

@@ -17,11 +17,18 @@ import (
 // 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 {
+	if s.c.BackupRetentionDays < 0 && s.c.BackupRetentionPeriod == 0 {
 		return nil
 	}
 
-	deadline := time.Now().AddDate(0, 0, -int(s.c.BackupRetentionDays)).Add(s.c.BackupPruningLeeway)
+	var deadline time.Time
+	if s.c.BackupRetentionPeriod != 0 {
+		deadline = time.Now().Add(-s.c.BackupRetentionPeriod)
+	} else {
+		s.logger.Warn("Using BACKUP_RETENTION_DAYS has been deprecated and will be removed in the next major version. Please use BACKUP_RETENTION_PERIOD instead.")
+		deadline = time.Now().AddDate(0, 0, -int(s.c.BackupRetentionDays))
+	}
+	deadline = deadline.Add(s.c.BackupPruningLeeway)
 
 	eg := errgroup.Group{}
 	for _, backend := range s.storages {

cmd/backup/script.go

@@ -225,6 +225,10 @@ func (s *script) init() error {
 		s.storages = append(s.storages, dropboxBackend)
 	}
 
+	if s.c.BackupRetentionDays > -1 && s.c.BackupRetentionPeriod > 0 {
+		return errwrap.Wrap(nil, "both BACKUP_RETENTION_DAYS and BACKUP_RETENTION_PERIOD were configured, which are mutually exclusive")
+	}
+
 	if s.c.EmailNotificationRecipient != "" {
 		emailURL := fmt.Sprintf(
 			"smtp://%s:%s@%s:%d/?from=%s&to=%s",

docs/Gemfile.lock

@@ -59,13 +59,11 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
-    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.4.2)

docs/how-tos/automatically-prune-old-backups.md

@@ -7,7 +7,8 @@ nav_order: 3
 
 # Automatically prune old backups
 
-When `BACKUP_RETENTION_DAYS` is configured, the command will check if there are any archives in the remote storage backend(s) or local archive that are older than the given retention value and rotate these backups away.
+When `BACKUP_RETENTION_PERIOD` is configured, the command will check if there are any archives in the remote storage backend(s) or local archive that are older than the given retention value and rotate these backups away.
+The value is a duration as per Go's [`time.ParseDuration`][duration].
 
 {: .note }
 Be aware that this mechanism looks at __all files in the target bucket or archive__, which means that other files that are older than the given deadline are deleted as well.
@@ -23,7 +24,7 @@ services:
     environment:
       BACKUP_FILENAME: backup-%Y-%m-%dT%H-%M-%S.tar.gz
       BACKUP_PRUNING_PREFIX: backup-
-      BACKUP_RETENTION_DAYS: '7'
+      BACKUP_RETENTION_PERIOD: '168h'
     volumes:
       - ${HOME}/backups:/archive
       - data:/backup/my-app-backup:ro
@@ -32,3 +33,5 @@ services:
 volumes:
   data:
 ```
+
+[duration]: https://pkg.go.dev/time#ParseDuration

docs/how-tos/encrypt-backups-using-gpg.md

@@ -3,15 +3,7 @@ title: Encrypt backups using GPG
 layout: default
 parent: How Tos
 nav_order: 7
+nav_exclude: true
 ---
 
-# Encrypt backups using GPG
-
-The image supports encrypting backups using GPG out of the box.
-In case a `GPG_PASSPHRASE` or `GPG_PUBLIC_KEY_RING` environment variable is set, the backup archive will be encrypted using the given key and saved as a `.gpg` file instead.
-
-Assuming you have `gpg` installed, you can decrypt such a backup using (your OS will prompt for the passphrase before decryption can happen):
-
-```console
-gpg -o backup.tar.gz -d backup.tar.gz.gpg
-```
+See: [Encrypt Backups](encrypt-backups)

docs/how-tos/encrypt-backups.md

@@ -0,0 +1,32 @@
+---
+title: Encrypting backups
+layout: default
+parent: How Tos
+nav_order: 7
+---
+
+# Encrypting backups
+
+The image supports encrypting backups using one of two available methods: **GPG** or **[age](https://age-encryption.org/)**
+
+## Using GPG encryption
+
+In case a `GPG_PASSPHRASE` or `GPG_PUBLIC_KEY_RING` environment variable is set, the backup archive will be encrypted using the given key and saved as a `.gpg` file instead.
+
+Assuming you have `gpg` installed, you can decrypt such a backup using (your OS will prompt for the passphrase before decryption can happen):
+
+```console
+gpg -o backup.tar.gz -d backup.tar.gz.gpg
+```
+
+## Using age encryption
+
+{: .note }
+Even though the `age` CLI tools supports encryption using SSH keys, this is not supported by this tool.
+`AGE_PUBLIC_KEYS` currently expects `age` keys to be given.
+
+age allows backups to be encrypted with either a symmetric key (password) or a public key. One of those options are available for use.
+
+Given `AGE_PASSPHRASE` being provided, the backup archive will be encrypted with the passphrase and saved as a `.age` file instead. Refer to age documentation for how to properly decrypt.
+
+Given `AGE_PUBLIC_KEYS` being provided (allowing multiple by separating each public key with `,`), the backup archive will be encrypted with the provided public keys. It will also result in the archive being saved as a `.age` file.

docs/how-tos/set-up-dropbox.md

@@ -33,5 +33,7 @@ Note: Using the "Generated access token" in the app console is not supported, as
 
 ## Other parameters
 
-Important: If you chose `App folder` access during the creation of your Dropbox app in step 1 above, you can only write in the app's directory!
-This means, that `DROPBOX_REMOTE_PATH` must start with e.g. `/Apps/YOUR_APP_NAME` or `/Apps/YOUR_APP_NAME/some_sub_dir`
+Important: If you chose `App folder` access during the creation of your Dropbox app in step 1 above, `DROPBOX_REMOTE_PATH` will be a relative path under the App folder!
+(_For example, DROPBOX_REMOTE_PATH=/somedir means the backup file will be uploaded to /Apps/myapp/somedir_)
+On the other hand if you chose `Full Dropbox` access, the value for `DROPBOX_REMOTE_PATH` will represent an absolute path inside your Dropbox storage area.
+(_Still considering the same example above, the backup file will be uploaded to /somedir in your Dropbox root_)

docs/recipes/index.md

@@ -190,7 +190,7 @@ services:
       DROPBOX_REFRESH_TOKEN: REFRESH_KEY  # replace
       DROPBOX_APP_KEY: APP_KEY  # replace
       DROPBOX_APP_SECRET: APP_SECRET  # replace
-      DROPBOX_REMOTE_PATH: /Apps/my-test-app/some_subdir  # replace
+      DROPBOX_REMOTE_PATH: /somedir  # replace
     volumes:
       - data:/backup/my-app-backup:ro
       - /var/run/docker.sock:/var/run/docker.sock:ro
@@ -280,7 +280,7 @@ services:
       AWS_SECRET_ACCESS_KEY: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
       BACKUP_FILENAME: backup-%Y-%m-%dT%H-%M-%S.tar.gz
       BACKUP_PRUNING_PREFIX: backup-
-      BACKUP_RETENTION_DAYS: 7
+      BACKUP_RETENTION_PERIOD: 168h
     volumes:
       - data:/backup/my-app-backup:ro
       - /var/run/docker.sock:/var/run/docker.sock:ro
@@ -338,7 +338,7 @@ volumes:
   data:
 ```
 
-## Using mysqldump to prepare the backup
+## Using mariadb-dump/mysqldump to prepare the backup
 
 ```yml
 version: '3'
@@ -347,7 +347,7 @@ services:
   database:
     image: mariadb:latest
     labels:
-      - docker-volume-backup.archive-pre=/bin/sh -c 'mysqldump -psecret --all-databases > /tmp/dumps/dump.sql'
+      - docker-volume-backup.archive-pre=/bin/sh -c 'mariadb-dump -psecret --all-databases > /tmp/dumps/dump.sql'
     volumes:
       - data:/tmp/dumps
   backup:

docs/reference/index.md

@@ -312,9 +312,10 @@ You can populate below template according to your requirements and use it as you
 # removal to certain files.
 
 # Define this value to enable automatic rotation of old backups. The value
-# declares the number of days for which a backup is kept.
+# declares the duration for which a backup is kept. It is formatted as per
+# https://pkg.go.dev/time#ParseDuration, e.g. 1 day turns into `24h`
 
-# BACKUP_RETENTION_DAYS="7"
+# BACKUP_RETENTION_PERIOD="168h"
 
 # In case the duration a backup takes fluctuates noticeably in your setup
 # you can adjust this setting to make sure there are no race conditions
@@ -337,6 +338,9 @@ You can populate below template according to your requirements and use it as you
 
 ########### BACKUP ENCRYPTION
 
+# All of the encryption options are mutually exclusive. Provide a single option
+# for the encryption scheme of your choice.
+
 # Backups can be encrypted symmetrically using gpg in case a passphrase is given.
 
 # GPG_PASSPHRASE="<xxx>"
@@ -350,6 +354,16 @@ You can populate below template according to your requirements and use it as you
 #...
 #-----END PGP PUBLIC KEY BLOCK-----
 
+# Backups can be encrypted symmetrically using age in case a passphrase is given.
+
+# AGE_PASSPHRASE="<xxx>"
+
+# Backups can be encrypted asymmetrically using age in case publickeys are given.
+# Multiple keys need to be provided as a comma separated list. Right now, this only
+# support passing age keys, with no support for ssh keys.
+
+# AGE_PUBLIC_KEYS="<xxx>"
+
 ########### STOPPING CONTAINERS AND SERVICES DURING BACKUP
 
 # Containers or services can be stopped by applying a

go.mod

@@ -1,28 +1,29 @@
 module github.com/offen/docker-volume-backup
 
-go 1.22
+go 1.23
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0
-	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0
+	filippo.io/age v1.2.1
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.1
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0
 	github.com/containrrr/shoutrrr v0.8.0
 	github.com/cosiner/argv v0.1.0
-	github.com/docker/cli v27.1.1+incompatible
+	github.com/docker/cli v27.5.1+incompatible
 	github.com/docker/docker v27.1.1+incompatible
 	github.com/gofrs/flock v0.12.1
 	github.com/joho/godotenv v1.5.1
-	github.com/klauspost/compress v1.17.9
+	github.com/klauspost/compress v1.17.11
 	github.com/leekchan/timeutil v0.0.0-20150802142658-28917288c48d
-	github.com/minio/minio-go/v7 v7.0.74
+	github.com/minio/minio-go/v7 v7.0.84
 	github.com/offen/envconfig v1.5.0
-	github.com/otiai10/copy v1.14.0
-	github.com/pkg/sftp v1.13.6
+	github.com/otiai10/copy v1.14.1
+	github.com/pkg/sftp v1.13.7
 	github.com/robfig/cron/v3 v3.0.1
-	github.com/studio-b12/gowebdav v0.9.0
-	golang.org/x/crypto v0.25.0
-	golang.org/x/oauth2 v0.22.0
-	golang.org/x/sync v0.8.0
-	mvdan.cc/sh/v3 v3.8.0
+	github.com/studio-b12/gowebdav v0.10.0
+	golang.org/x/crypto v0.32.0
+	golang.org/x/oauth2 v0.25.0
+	golang.org/x/sync v0.10.0
+	mvdan.cc/sh/v3 v3.10.0
 )
 
 require (
@@ -34,10 +35,11 @@ require (
 	github.com/go-ini/ini v1.67.0 // indirect
 	github.com/go-logr/logr v1.4.1 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/goccy/go-json v0.10.3 // indirect
+	github.com/goccy/go-json v0.10.4 // indirect
 	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/otiai10/mint v1.6.3 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.51.0 // indirect
 	go.opentelemetry.io/otel v1.26.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.26.0 // indirect
@@ -50,9 +52,9 @@ require (
 )
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2 // indirect
 	github.com/Microsoft/go-winio v0.5.2 // indirect
 	github.com/ProtonMail/go-crypto v1.1.0-alpha.1
 	github.com/docker/go-connections v0.4.0 // indirect
@@ -62,7 +64,7 @@ require (
 	github.com/fatih/color v1.17.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.9 // indirect
 	github.com/klauspost/pgzip v1.2.6
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
@@ -75,10 +77,10 @@ require (
 	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/rs/xid v1.5.0 // indirect
+	github.com/rs/xid v1.6.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
-	golang.org/x/net v0.27.0 // indirect
-	golang.org/x/sys v0.22.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/net v0.34.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
 	gotest.tools/v3 v3.0.3 // indirect
 )

go.sum

@@ -1,3 +1,5 @@
+c2sp.org/CCTV/age v0.0.0-20240306222714-3ec4d716e805 h1:u2qwJeEvnypw+OCPUHmoZE3IqwfuN5kgDfo5MLzpNM0=
+c2sp.org/CCTV/age v0.0.0-20240306222714-3ec4d716e805/go.mod h1:FomMrUJ2Lxt5jCLmZkG3FHa72zUprnhd3v/Z18Snm4w=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
@@ -31,20 +33,26 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0 h1:GJHeeA2N7xrG3q30L2UXDyuWRzDM900/65j70wcM4Ww=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0/go.mod h1:l38EPgmsp71HHLq9j7De57JcKOWPyhrsW1Awm1JS6K0=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0 h1:tfLQ34V6F7tVSwoTf/4lH5sE0o6eCJuNDTmH09nDpbc=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0/go.mod h1:9kIvujWAA58nmPmWB1m23fyWic1kYZMxD9CxaWn4Qpg=
+filippo.io/age v1.2.1 h1:X0TZjehAZylOIj4DubWYU1vWQxv9bJpo+Uu2/LGhi1o=
+filippo.io/age v1.2.1/go.mod h1:JL9ew2lTN+Pyft4RiNGguFfOpewKwSHm5ayKD/A4004=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0 h1:g0EZJwz7xkXQiZAI5xi9f3WWFYBlX1CPTrR+NDToRkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0/go.mod h1:XCW7KnZet0Opnr7HccfUw1PLc4CjHqpcaxW8DHklNkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.1 h1:1mvYtZfWQAnwNah/C+Z+Jb9rQH95LPE2vlmMuWAHJk8=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.1/go.mod h1:75I/mXtme1JyWFtz8GocPHVFyH421IBoZErnO16dd0k=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.1 h1:Bk5uOhSAenHyR5P61D/NzeQCv+4fEVV8mOkJ82NqpWw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.1/go.mod h1:QZ4pw3or1WPmRBxf0cHd1tknzrT54WPBOQoGutCPvSU=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
 github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0 h1:PiSrjRPpkQNjrM8H0WwKMnZUdu1RGMtd/LdGKUrOo+c=
 github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0/go.mod h1:oDrbWx4ewMylP7xHivfgixbfGBT6APAwsSoHRKotnIc=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0 h1:Be6KInmFEKV81c0pOAEbRYehLMwmmGI1exuFj248AMk=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0/go.mod h1:WCPBHsOXfBVnivScjs2ypRfimjEW0qPVLGgJkZlrIOA=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0 h1:UXT0o77lXQrikd1kgwIPQOUect7EoR/+sbP4wQKdzxM=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0/go.mod h1:cTvi54pg19DoT07ekoeMgE/taAwNtCShVeZqA+Iv2xI=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 h1:XHOnouVk1mxXfQidrMEnLlPk9UMeRtyBTnEFtxkV0kU=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2 h1:kYRSnvJju5gYVyhkij+RTJ/VR6QIUaCfWeaFm2ycsjQ=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Microsoft/go-winio v0.5.2 h1:a9IhgEQBCUEk6QCdml9CiJGhAws+YwffDHEMp1VMrpA=
@@ -54,6 +62,8 @@ github.com/ProtonMail/go-crypto v1.1.0-alpha.1/go.mod h1:rA3QumHc/FZ8pAHreoekgiA
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
@@ -70,10 +80,12 @@ github.com/cosiner/argv v0.1.0/go.mod h1:EusR6TucWKX+zFgtdUsKT2Cvg45K5rtpCcWz4hK
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
-github.com/docker/cli v27.1.1+incompatible h1:goaZxOqs4QKxznZjjBWKONQci/MywhtRv2oNn0GkeZE=
-github.com/docker/cli v27.1.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
+github.com/docker/cli v27.5.1+incompatible h1:JB9cieUT9YNiMITtIsguaN55PLOHhBSz3LKVc6cqWaY=
+github.com/docker/cli v27.5.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/docker v27.1.1+incompatible h1:hO/M4MtV36kzKldqnA37IWhebRA+LnqqcqDja6kVaKY=
 github.com/docker/docker v27.1.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
@@ -92,8 +104,6 @@ github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
 github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
-github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
-github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -104,10 +114,12 @@ github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
 github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/go-quicktest/qt v1.101.0 h1:O1K29Txy5P2OK0dGo59b7b0LR6wKfIhttaAhHUyn7eI=
+github.com/go-quicktest/qt v1.101.0/go.mod h1:14Bz/f7NwaXPtdYEgzsx46kqSxVwTbzVZsDC26tQJow=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
-github.com/goccy/go-json v0.10.3 h1:KZ5WoDbxAIgm2HNbYckL0se1fHD6rz5j4ywS6ebzDqA=
-github.com/goccy/go-json v0.10.3/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
+github.com/goccy/go-json v0.10.4 h1:JSwxQzIqKfmFX1swYPpUThQZp/Ka4wzJdK0LWVytLPM=
+github.com/goccy/go-json v0.10.4/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/gofrs/flock v0.12.1 h1:MTLVXXHf8ekldpJk3AKicLij9MdwOWkZ+a/jHHZby9E=
 github.com/gofrs/flock v0.12.1/go.mod h1:9zxTsyu5xtJ9DK+1tFZyibEV7y3uwDxPPfbxeeHCoD0=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
@@ -178,13 +190,15 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/keybase/go-keychain v0.0.0-20231219164618-57a3676c3af6 h1:IsMZxCuZqKuao2vNdfD82fjjgPLfyHLpR41Z88viRWs=
+github.com/keybase/go-keychain v0.0.0-20231219164618-57a3676c3af6/go.mod h1:3VeWNIJaW+O5xpRQbPp0Ybqu1vJd/pm7s2F473HRrkw=
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@@ -208,8 +222,8 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
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@@ -226,27 +240,29 @@ github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8
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@@ -260,10 +276,10 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
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@@ -296,9 +312,9 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
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@@ -330,6 +346,7 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
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@@ -359,17 +376,18 @@ golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -380,8 +398,9 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
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-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
+golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -420,22 +439,28 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
-golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.22.0 h1:BbsgPEJULsl2fV/AT3v15Mjva5yXKQDyKf+TbDz7QJk=
-golang.org/x/term v0.22.0/go.mod h1:F3qCibpT5AMpCRfhfT53vVJwhLtIVHhB9XDjfFvnMI4=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
+golang.org/x/term v0.28.0 h1:/Ts8HFuMR2E6IP/jlo7QVLZHggjKQbhu/7H0LJFr3Gg=
+golang.org/x/term v0.28.0/go.mod h1:Sw/lC2IAUZ92udQNf3WodGtn4k/XoLyZoh8v/8uiwek=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
-golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -485,8 +510,9 @@ golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
-golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/tools v0.22.0 h1:gqSGLZqv+AI9lIQzniJ0nZDRG5GBPsSi+DRNHWNz6yA=
+golang.org/x/tools v0.22.0/go.mod h1:aCwcsjqvq7Yqt6TNyX7QMU2enbQ/Gt0bo6krSeEri+c=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -591,8 +617,8 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-mvdan.cc/sh/v3 v3.8.0 h1:ZxuJipLZwr/HLbASonmXtcvvC9HXY9d2lXZHnKGjFc8=
-mvdan.cc/sh/v3 v3.8.0/go.mod h1:w04623xkgBVo7/IUK89E0g8hBykgEpN0vgOj3RJr6MY=
+mvdan.cc/sh/v3 v3.10.0 h1:v9z7N1DLZ7owyLM/SXZQkBSXcwr2IGMm2LY2pmhVXj4=
+mvdan.cc/sh/v3 v3.10.0/go.mod h1:z/mSSVyLFGZzqb3ZIKojjyqIx/xbmz/UHdCSv9HmqXY=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

internal/errwrap/wrap.go

@@ -21,7 +21,7 @@ func Wrap(err error, msg string) error {
 	chunks := strings.Split(frame.Function, "/")
 	withCaller := fmt.Sprintf("%s: %s", chunks[len(chunks)-1], msg)
 	if err == nil {
-		return fmt.Errorf(withCaller)
+		return errors.New(withCaller)
 	}
 	return fmt.Errorf("%s: %w", withCaller, err)
 }

test/Dockerfile

@@ -1,8 +1,10 @@
 FROM docker:27-dind
 
 RUN apk add \
+  age \
   coreutils \
   curl \
+  expect \
   gpg \
   gpg-agent \
   jq \

test/age-passphrase/docker-compose.yml

@@ -0,0 +1,24 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.age
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
+      AGE_PASSPHRASE: "Dance.0Tonight.Go.Typical"
+    volumes:
+      - ${LOCAL_DIR:-./local}:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/age-passphrase/run.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename "$(pwd)")
+
+export LOCAL_DIR="$(mktemp -d)"
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+expect_running_containers "2"
+
+TMP_DIR=$(mktemp -d)
+
+# complex usage of expect(1) due to age not have a way to programmatically
+# provide the passphrase
+expect -i <<EOL
+spawn age --decrypt -o "$LOCAL_DIR/decrypted.tar.gz" "$LOCAL_DIR/test.tar.gz.age"
+expect -exact "Enter passphrase: "
+send -- "Dance.0Tonight.Go.Typical\r"
+sleep 1
+EOL
+tar -xf "$LOCAL_DIR/decrypted.tar.gz" -C "$TMP_DIR"
+
+if [ ! -f "$TMP_DIR/backup/app_data/offen.db" ]; then
+  fail "Could not find expected file in untared archive."
+fi
+rm -vf "$LOCAL_DIR/decrypted.tar.gz"
+
+pass "Found relevant files in decrypted and untared local backup."
+
+if [ ! -L "$LOCAL_DIR/test-latest.tar.gz.age" ]; then
+  fail "Could not find local symlink to latest encrypted backup."
+fi

test/age-publickey/.gitignore

@@ -0,0 +1 @@
+pk-*.txt

test/age-publickey/docker-compose.yml

@@ -0,0 +1,24 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.age
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
+      AGE_PUBLIC_KEYS: "${BACKUP_AGE_PUBLIC_KEYS}"
+    volumes:
+      - ${LOCAL_DIR:-./local}:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/age-publickey/run.sh

@@ -0,0 +1,43 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename "$(pwd)")
+
+export LOCAL_DIR="$(mktemp -d)"
+
+age-keygen >"$LOCAL_DIR/pk-a.txt"
+PK_A="$(grep -E 'public key' <"$LOCAL_DIR/pk-a.txt" | cut -d: -f2 | xargs)"
+age-keygen >"$LOCAL_DIR/pk-b.txt"
+PK_B="$(grep -E 'public key' <"$LOCAL_DIR/pk-b.txt" | cut -d: -f2 | xargs)"
+
+export BACKUP_AGE_PUBLIC_KEYS="$PK_A,$PK_B"
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+expect_running_containers "2"
+
+do_decrypt() {
+  TMP_DIR=$(mktemp -d)
+  age --decrypt -i "$1" -o "$LOCAL_DIR/decrypted.tar.gz" "$LOCAL_DIR/test.tar.gz.age"
+  tar -xf "$LOCAL_DIR/decrypted.tar.gz" -C "$TMP_DIR"
+
+  if [ ! -f "$TMP_DIR/backup/app_data/offen.db" ]; then
+    fail "Could not find expected file in untared archive."
+  fi
+  rm -vf "$LOCAL_DIR/decrypted.tar.gz"
+
+  pass "Found relevant files in decrypted and untared local backup."
+
+  if [ ! -L "$LOCAL_DIR/test-latest.tar.gz.age" ]; then
+    fail "Could not find local symlink to latest encrypted backup."
+  fi
+}
+
+do_decrypt "$LOCAL_DIR/pk-a.txt"
+do_decrypt "$LOCAL_DIR/pk-b.txt"

test/azure/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   storage:
-    image: mcr.microsoft.com/azure-storage/azurite:3.31.0
+    image: mcr.microsoft.com/azure-storage/azurite:3.33.0
     volumes:
       - ${DATA_DIR:-./data}:/data
     command: azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --location /data
@@ -37,7 +37,7 @@ services:
       AZURE_STORAGE_ACCESS_TIER: Hot
       BACKUP_FILENAME: test.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
     volumes:

test/azure/run.sh

@@ -38,7 +38,7 @@ rm "$LOCAL_DIR/test.tar.gz"
 
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="1s" docker compose up -d
 sleep 5
 
 docker compose exec backup backup
@@ -52,7 +52,7 @@ pass "Remote backups have not been deleted."
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
 
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create first backup with no prune"

test/certs/docker-compose.yml

@@ -26,7 +26,7 @@ services:
       AWS_ENDPOINT_CA_CERT: /root/minio-rootCA.crt
       AWS_S3_BUCKET_NAME: backup
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - app_data:/backup/app_data:ro

test/dropbox/docker-compose.yml

@@ -30,7 +30,7 @@ services:
       BACKUP_FILENAME_EXPAND: 'true'
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
       DROPBOX_ENDPOINT: http://openapi_mock:8080

test/dropbox/run.sh

@@ -29,7 +29,7 @@ fi
 
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="1s" docker compose up -d
 sleep 5
 
 logs=$(docker compose exec -T backup backup)
@@ -43,7 +43,7 @@ fi
 
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create second backup and prune"

test/gpg-asym/docker-compose.yml

@@ -6,7 +6,7 @@ services:
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
       BACKUP_FILENAME: test.tar.gz
       BACKUP_LATEST_SYMLINK: test-latest.tar.gz.gpg
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       GPG_PUBLIC_KEY_RING_FILE: /keys/public_key.asc
     volumes:
       - ${KEY_DIR:-.}/public_key.asc:/keys/public_key.asc

test/gpg/docker-compose.yml

@@ -6,7 +6,7 @@ services:
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
       BACKUP_FILENAME: test.tar.gz
       BACKUP_LATEST_SYMLINK: test-latest.tar.gz.gpg
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       GPG_PASSPHRASE: 1234#$$ecret
     volumes:
       - ${LOCAL_DIR:-./local}:/archive

test/local/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_LATEST_SYMLINK: test-$$HOSTNAME.latest.tar.gz.gpg
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
     volumes:

test/local/run.sh

@@ -41,7 +41,7 @@ pass "Found symlink to latest version in local backup."
 
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="1s" docker compose up -d
 sleep 5
 
 docker compose exec backup backup
@@ -54,7 +54,7 @@ pass "Local backups have not been deleted."
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
 
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create first backup with no prune"

test/lock/docker-compose.yml

@@ -4,7 +4,7 @@ services:
     restart: always
     environment:
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: '7'
+      BACKUP_RETENTION_PERIOD: 168h
     volumes:
       - app_data:/backup/app_data:ro
       - /var/run/docker.sock:/var/run/docker.sock

test/lock/run.sh

@@ -13,7 +13,7 @@ sleep 5
 
 ec=0
 
-docker compose exec -e BACKUP_RETENTION_DAYS=7 -e BACKUP_FILENAME=test.tar.gz backup backup & \
+docker compose exec -e BACKUP_RETENTION_PERIOD=168h -e BACKUP_FILENAME=test.tar.gz backup backup & \
   { set +e; sleep 0.1; docker compose exec -e BACKUP_FILENAME=test2.tar.gz -e LOCK_TIMEOUT=1s backup backup; ec=$?;}
 
 if [ "$ec" = "0" ]; then

test/pruning/docker-compose.yml

@@ -25,7 +25,7 @@ services:
       BACKUP_FILENAME_EXPAND: 'true'
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: 7
+      BACKUP_RETENTION_PERIOD: 168h
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
       BACKUP_LATEST_SYMLINK: test-$$HOSTNAME.latest.tar.gz

test/retention/docker-compose.yml

@@ -0,0 +1,22 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_RETENTION_PERIOD: 15s
+      BACKUP_PRUNING_LEEWAY: 1s
+    volumes:
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ${LOCAL_DIR:-./local}:/archive
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/retention/run.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename $(pwd))
+
+export LOCAL_DIR=$(mktemp -d)
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+sleep 20
+
+if [ $(ls -1 $LOCAL_DIR | wc -l) != "1" ]; then
+  fail "Unexpected number of backups after initial run"
+fi
+pass "Found 1 backup files."
+
+docker compose exec backup backup
+
+if [ $(ls -1 $LOCAL_DIR | wc -l) != "1" ]; then
+  fail "Unexpected number of backups after initial run"
+fi
+pass "Found 1 backup files."

test/s3/docker-compose.yml

@@ -25,7 +25,7 @@ services:
       BACKUP_FILENAME_EXPAND: 'true'
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
     volumes:

test/s3/run.sh

@@ -22,9 +22,11 @@ docker run --rm \
 
 pass "Found relevant files in untared remote backups."
 
+sleep 5
+
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="5s" docker compose up -d
 sleep 5
 
 docker compose exec backup backup
@@ -39,7 +41,7 @@ pass "Remote backups have not been deleted."
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
 
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create first backup with no prune"

test/secrets/docker-compose.yml

@@ -31,7 +31,7 @@ services:
       AWS_S3_BUCKET_NAME: backup
       BACKUP_FILENAME: test.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: 7
+      BACKUP_RETENTION_PERIOD: 168h
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro

test/services/docker-compose.yml

@@ -25,7 +25,7 @@ services:
       AWS_S3_BUCKET_NAME: backup
       BACKUP_FILENAME: test.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: 7
+      BACKUP_RETENTION_PERIOD: 168h
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro

test/ssh/docker-compose.yml

@@ -19,7 +19,7 @@ services:
       BACKUP_FILENAME_EXPAND: 'true'
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
       SSH_HOST_NAME: ssh

test/ssh/run.sh

@@ -28,7 +28,7 @@ pass "Found relevant files in decrypted and untared remote backups."
 
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="1s" docker compose up -d
 sleep 5
 
 docker compose exec backup backup
@@ -43,7 +43,7 @@ pass "Remote backups have not been deleted."
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
 
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create first backup with no prune"

test/swarm/docker-compose.yml

@@ -31,7 +31,7 @@ services:
       AWS_S3_BUCKET_NAME: backup
       BACKUP_FILENAME: test.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: 7
+      BACKUP_RETENTION_PERIOD: 168h
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro

test/webdav/docker-compose.yml

@@ -18,7 +18,7 @@ services:
       BACKUP_FILENAME_EXPAND: 'true'
       BACKUP_FILENAME: test-$$HOSTNAME.tar.gz
       BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
-      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      BACKUP_RETENTION_PERIOD: ${BACKUP_RETENTION_PERIOD:-168h}
       BACKUP_PRUNING_LEEWAY: 5s
       BACKUP_PRUNING_PREFIX: test
       WEBDAV_URL: http://webdav/

test/webdav/run.sh

@@ -24,7 +24,7 @@ pass "Found relevant files in untared remote backup."
 
 # The second part of this test checks if backups get deleted when the retention
 # is set to 0 days (which it should not as it would mean all backups get deleted)
-BACKUP_RETENTION_DAYS="0" docker compose up -d
+BACKUP_RETENTION_PERIOD="1s" docker compose up -d
 sleep 5
 
 docker compose exec backup backup
@@ -39,7 +39,7 @@ pass "Remote backups have not been deleted."
 # The third part of this test checks if old backups get deleted when the retention
 # is set to 7 days (which it should)
 
-BACKUP_RETENTION_DAYS="7" docker compose up -d
+BACKUP_RETENTION_PERIOD="168h" docker compose up -d
 sleep 5
 
 info "Create first backup with no prune"