Refactor bannerPrintln function to use a mutex for thread safety

main.go

@@ -8,6 +8,7 @@ import (
  "reflect"
  "strconv"
  "strings"
+ "sync"
 
  "github.com/fatih/color"
  "github.com/spf13/cobra"
@@ -25,6 +26,7 @@ var (
  o = &option{}
  log *slog.Logger
  values []string
+ mutex = &sync.Mutex{}
 )
 
 type option struct {
@@ -328,15 +330,15 @@ func run(cmd *cobra.Command, args []string) error {
  }
  result, err := snapshotter.Snap(ctx)
  if err != nil {
- bannerPrintln("FAIL", fmt.Sprintf("chart=%s values=%s err=%v format=%s", ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion, err), color.FgRed, color.BgRed)
+ bannerPrintln("FAIL", fmt.Sprintf("chart=%s values=%s err=%v snapshot_version=%s", ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion, err), color.FgRed, color.BgRed)
  return fmt.Errorf("failed to get snapshot chart=%s values=%s: %w", ht.Chart, ht.ValuesFile, err)
  }
  if !result.Match {
- bannerPrintln("FAIL", fmt.Sprintf("Snapshot does not match chart=%s values=%s format=%s", ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion), color.FgRed, color.BgRed)
+ bannerPrintln("FAIL", fmt.Sprintf("Snapshot does not match chart=%s values=%s snapshot_version=%s", ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion), color.FgRed, color.BgRed)
  fmt.Println(result.FailureMessage)
  return fmt.Errorf("snapshot does not match chart=%s values=%s", ht.Chart, ht.ValuesFile)
  }
- bannerPrintln("PASS", fmt.Sprintf("Snapshot %s chart=%s values=%s format=%s", o.OK(), ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion), color.FgGreen, color.BgGreen)
+ bannerPrintln("PASS", fmt.Sprintf("Snapshot %s chart=%s values=%s snapshot_version=%s", o.OK(), ht.Chart, ht.ValuesFile, snapshotter.SnapshotVersion), color.FgGreen, color.BgGreen)
  return nil
  })
  }
@@ -350,6 +352,8 @@ func run(cmd *cobra.Command, args []string) error {
 }
 
 func bannerPrintln(banner string, message string, fgColor color.Attribute, bgColor color.Attribute) {
+ mutex.Lock()
+ defer mutex.Unlock()
  color.New(color.FgWhite, bgColor).Printf(" %s ", banner)
  color.New(fgColor).Printf(" %s\n", message)
 }