| 26 | } |
| 27 | |
| 28 | func ExampleNewLogger_levelColors() { |
| 29 | // Color by level value |
| 30 | colorFn := func(keyvals ...interface{}) term.FgBgColor { |
| 31 | for i := 0; i < len(keyvals)-1; i += 2 { |
| 32 | if keyvals[i] != "level" { |
| 33 | continue |
| 34 | } |
| 35 | switch keyvals[i+1] { |
| 36 | case "debug": |
| 37 | return term.FgBgColor{Fg: term.DarkGray} |
| 38 | case "info": |
| 39 | return term.FgBgColor{Fg: term.Gray} |
| 40 | case "warn": |
| 41 | return term.FgBgColor{Fg: term.Yellow} |
| 42 | case "error": |
| 43 | return term.FgBgColor{Fg: term.Red} |
| 44 | case "crit": |
| 45 | return term.FgBgColor{Fg: term.Gray, Bg: term.DarkRed} |
| 46 | default: |
| 47 | return term.FgBgColor{} |
| 48 | } |
| 49 | } |
| 50 | return term.FgBgColor{} |
| 51 | } |
| 52 | |
| 53 | logger := term.NewLogger(os.Stdout, log.NewJSONLogger, colorFn) |
| 54 | |
| 55 | logger.Log("level", "warn", "msg", "yellow") |
| 56 | logger.Log("level", "debug", "msg", "dark gray") |
| 57 | } |