package preflight import ( "fmt" "io" "os" "path/filepath" "runtime" "time" "github.com/rs/zerolog" "github.com/rs/zerolog/diode" "github.com/rs/zerolog/log" "github.com/spf13/viper" ) func Logs(name string) { zerolog.TimeFieldFormat = "" zerolog.SetGlobalLevel(zerolog.InfoLevel) if viper.GetBool("debug") { zerolog.SetGlobalLevel(zerolog.DebugLevel) } console := zerolog.ConsoleWriter{Out: os.Stdout} if !viper.GetBool("logs") { log.Logger = log.Output(console) } else { logs := filepath.Join(".", "logs") if runtime.GOOS == "linux" { logs = "/var/log/neko" } if _, err := os.Stat(logs); os.IsNotExist(err) { os.Mkdir(logs, os.ModePerm) } latest := filepath.Join(logs, name+"-latest.log") _, err := os.Stat(latest) if err == nil { err = os.Rename(latest, filepath.Join(logs, "neko."+time.Now().Format("2006-01-02T15-04-05Z07-00")+".log")) if err != nil { log.Panic().Err(err).Msg("failed to rotate log file") } } logf, err := os.OpenFile(latest, os.O_RDWR|os.O_CREATE, 0666) if err != nil { log.Panic().Err(err).Msg("failed to create log file") } logger := diode.NewWriter(logf, 1000, 10*time.Millisecond, func(missed int) { fmt.Printf("logger dropped %d messages", missed) }) log.Logger = log.Output(io.MultiWriter(console, logger)) } }