Drop logrus dependency, log using slog package from stdlib (#247)

cmd/backup/exec.go

@@ -160,7 +160,7 @@ func (s *script) runLabeledCommands(label string) error {
 			userLabelName := fmt.Sprintf("%s.user", label)
 			user := c.Labels[userLabelName]
 
-			s.logger.Infof("Running %s command %s for container %s", label, cmd, strings.TrimPrefix(c.Names[0], "/"))
+			s.logger.Info(fmt.Sprintf("Running %s command %s for container %s", label, cmd, strings.TrimPrefix(c.Names[0], "/")))
 			stdout, stderr, err := s.exec(c.ID, cmd, user)
 			if s.c.ExecForwardOutput {
 				os.Stderr.Write(stderr)

cmd/backup/lock.go

@@ -41,9 +41,11 @@ func (s *script) lock(lockfile string) (func() error, error) {
 		}
 
 		if !s.encounteredLock {
-			s.logger.Infof(
+			s.logger.Info(
+				fmt.Sprintf(
 					"Exclusive lock was not available on first attempt. Will retry until it becomes available or the timeout of %s is exceeded.",
 					s.c.LockTimeout,
+				),
 			)
 			s.encounteredLock = true
 		}

cmd/backup/main.go

@@ -4,6 +4,7 @@
 package main
 
 import (
+	"fmt"
 	"os"
 )
 
@@ -21,7 +22,9 @@ func main() {
 		if pArg := recover(); pArg != nil {
 			if err, ok := pArg.(error); ok {
 				if hookErr := s.runHooks(err); hookErr != nil {
-					s.logger.Errorf("An error occurred calling the registered hooks: %s", hookErr)
+					s.logger.Error(
+						fmt.Sprintf("An error occurred calling the registered hooks: %s", hookErr),
+					)
 				}
 				os.Exit(1)
 			}
@@ -29,9 +32,12 @@ func main() {
 		}
 
 		if err := s.runHooks(nil); err != nil {
-			s.logger.Errorf(
+			s.logger.Error(
+				fmt.Sprintf(
+
 					"Backup procedure ran successfully, but an error ocurred calling the registered hooks: %v",
 					err,
+				),
 			)
 			os.Exit(1)
 		}

cmd/backup/script.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
+	"log/slog"
 	"os"
 	"path"
 	"path/filepath"
@@ -32,7 +33,6 @@ import (
 	"github.com/kelseyhightower/envconfig"
 	"github.com/leekchan/timeutil"
 	"github.com/otiai10/copy"
-	"github.com/sirupsen/logrus"
 	"golang.org/x/crypto/openpgp"
 	"golang.org/x/sync/errgroup"
 )
@@ -42,7 +42,7 @@ import (
 type script struct {
 	cli       *client.Client
 	storages  []storage.Backend
-	logger    *logrus.Logger
+	logger    *slog.Logger
 	sender    *router.ServiceRouter
 	template  *template.Template
 	hooks     []hook
@@ -64,12 +64,7 @@ func newScript() (*script, error) {
 	stdOut, logBuffer := buffer(os.Stdout)
 	s := &script{
 		c:      &Config{},
-		logger: &logrus.Logger{
-			Out:       stdOut,
-			Formatter: new(logrus.TextFormatter),
-			Hooks:     make(logrus.LevelHooks),
-			Level:     logrus.InfoLevel,
-		},
+		logger: slog.New(slog.NewTextHandler(stdOut, nil)),
 		stats: &Stats{
 			StartTime: time.Now(),
 			LogOutput: logBuffer,
@@ -114,12 +109,12 @@ func newScript() (*script, error) {
 	logFunc := func(logType storage.LogLevel, context string, msg string, params ...any) {
 		switch logType {
 		case storage.LogLevelWarning:
-			s.logger.Warnf("["+context+"] "+msg, params...)
+			s.logger.Warn(fmt.Sprintf("["+context+"] "+msg, params...))
 		case storage.LogLevelError:
-			s.logger.Errorf("["+context+"] "+msg, params...)
+			s.logger.Error(fmt.Sprintf("["+context+"] "+msg, params...))
 		case storage.LogLevelInfo:
 		default:
-			s.logger.Infof("["+context+"] "+msg, params...)
+			s.logger.Info(fmt.Sprintf("["+context+"] "+msg, params...))
 		}
 	}
 
@@ -306,11 +301,13 @@ func (s *script) stopContainers() (func() error, error) {
 		return noop, nil
 	}
 
-	s.logger.Infof(
+	s.logger.Info(
+		fmt.Sprintf(
 			"Stopping %d container(s) labeled `%s` out of %d running container(s).",
 			len(containersToStop),
 			containerLabel,
 			len(allContainers),
+		),
 	)
 
 	var stoppedContainers []types.Container
@@ -382,9 +379,11 @@ func (s *script) stopContainers() (func() error, error) {
 				errors.Join(restartErrors...),
 			)
 		}
-		s.logger.Infof(
+		s.logger.Info(
+			fmt.Sprintf(
 				"Restarted %d container(s) and the matching service(s).",
 				len(stoppedContainers),
+			),
 		)
 		return nil
 	}, stopError
@@ -408,7 +407,9 @@ func (s *script) createArchive() error {
 			if err := remove(backupSources); err != nil {
 				return fmt.Errorf("createArchive: error removing snapshot: %w", err)
 			}
-			s.logger.Infof("Removed snapshot `%s`.", backupSources)
+			s.logger.Info(
+				fmt.Sprintf("Removed snapshot `%s`.", backupSources),
+			)
 			return nil
 		})
 		if err := copy.Copy(s.c.BackupSources, backupSources, copy.Options{
@@ -417,7 +418,9 @@ func (s *script) createArchive() error {
 		}); err != nil {
 			return fmt.Errorf("createArchive: error creating snapshot: %w", err)
 		}
-		s.logger.Infof("Created snapshot of `%s` at `%s`.", s.c.BackupSources, backupSources)
+		s.logger.Info(
+			fmt.Sprintf("Created snapshot of `%s` at `%s`.", s.c.BackupSources, backupSources),
+		)
 	}
 
 	tarFile := s.file
@@ -425,7 +428,9 @@ func (s *script) createArchive() error {
 		if err := remove(tarFile); err != nil {
 			return fmt.Errorf("createArchive: error removing tar file: %w", err)
 		}
-		s.logger.Infof("Removed tar file `%s`.", tarFile)
+		s.logger.Info(
+			fmt.Sprintf("Removed tar file `%s`.", tarFile),
+		)
 		return nil
 	})
 
@@ -453,7 +458,9 @@ func (s *script) createArchive() error {
 		return fmt.Errorf("createArchive: error compressing backup folder: %w", err)
 	}
 
-	s.logger.Infof("Created backup of `%s` at `%s`.", backupSources, tarFile)
+	s.logger.Info(
+		fmt.Sprintf("Created backup of `%s` at `%s`.", backupSources, tarFile),
+	)
 	return nil
 }
 
@@ -470,7 +477,9 @@ func (s *script) encryptArchive() error {
 		if err := remove(gpgFile); err != nil {
 			return fmt.Errorf("encryptArchive: error removing gpg file: %w", err)
 		}
-		s.logger.Infof("Removed GPG file `%s`.", gpgFile)
+		s.logger.Info(
+			fmt.Sprintf("Removed GPG file `%s`.", gpgFile),
+		)
 		return nil
 	})
 
@@ -500,7 +509,9 @@ func (s *script) encryptArchive() error {
 	}
 
 	s.file = gpgFile
-	s.logger.Infof("Encrypted backup using given passphrase, saving as `%s`.", s.file)
+	s.logger.Info(
+		fmt.Sprintf("Encrypted backup using given passphrase, saving as `%s`.", s.file),
+	)
 	return nil
 }
 
@@ -572,7 +583,9 @@ func (s *script) pruneBackups() error {
 // is non-nil.
 func (s *script) must(err error) {
 	if err != nil {
-		s.logger.Errorf("Fatal error running backup: %s", err)
+		s.logger.Error(
+			fmt.Sprintf("Fatal error running backup: %s", err),
+		)
 		panic(err)
 	}
 }

go.mod

@@ -14,7 +14,6 @@ require (
 	github.com/minio/minio-go/v7 v7.0.61
 	github.com/otiai10/copy v1.11.0
 	github.com/pkg/sftp v1.13.5
-	github.com/sirupsen/logrus v1.9.3
 	github.com/studio-b12/gowebdav v0.9.0
 	golang.org/x/crypto v0.11.0
 	golang.org/x/sync v0.3.0
@@ -52,6 +51,7 @@ require (
 	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rs/xid v1.5.0 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
 	golang.org/x/net v0.12.0 // indirect
 	golang.org/x/sys v0.10.0 // indirect
 	golang.org/x/text v0.11.0 // indirect