Be able to build the logger on windows (#596)

Seems like provider can build for windows for the kairosctl command and
it would fail due to the systemd libs not being available to build under
windows so we need to protect against that

Signed-off-by: Itxaka <itxaka@kairos.io>

types/logger.go

@@ -4,25 +4,14 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"net"
 	"os"
 	"path/filepath"
 	"strings"
 	"time"
 
 	"github.com/rs/zerolog"
-	"github.com/rs/zerolog/journald"
 )
 
-func isJournaldAvailable() bool {
-	conn, err := net.Dial("unixgram", "/run/systemd/journal/socket")
-	if err != nil {
-		return false
-	}
-	defer conn.Close()
-	return true
-}
-
 // NewKairosLogger creates a new logger with the given name and level.
 // The level is used to set the log level, defaulting to info
 // The log level can be overridden by setting the environment variable $NAME_DEBUG to any parseable value.
@@ -32,9 +21,9 @@ func NewKairosLogger(name, level string, quiet bool) KairosLogger {
 	var l zerolog.Level
 	var err error
 
-	// Add journald logger
-	if isJournaldAvailable() {
-		loggers = append(loggers, journald.NewJournalDWriter())
+	// Add journald logger if available
+	if writer := getJournaldWriter(); writer != nil {
+		loggers = append(loggers, writer)
 	} else {
 		// Default to file logging
 		logName := fmt.Sprintf("%s.log", name)

types/logger_linux.go

@@ -0,0 +1,23 @@
+//go:build !windows
+
+package types
+
+import (
+	"io"
+	"net"
+
+	"github.com/rs/zerolog/journald"
+)
+
+func isJournaldAvailable() bool {
+	conn, err := net.Dial("unixgram", "/run/systemd/journal/socket")
+	if err != nil {
+		return false
+	}
+	defer conn.Close()
+	return true
+}
+
+func getJournaldWriter() io.Writer {
+	return journald.NewJournalDWriter()
+}

types/logger_windows.go

@@ -0,0 +1,13 @@
+//go:build windows
+
+package types
+
+import "io"
+
+func isJournaldAvailable() bool {
+	return false
+}
+
+func getJournaldWriter() io.Writer {
+	return nil // No journald on Windows
+}