func init() {
dlog.SetLogger(NewLogger(protolog.NewStandardLogger(protolog.NewFileFlusher(os.Stderr))))
}
// SetupLogging sets up logging.
func SetupLogging(appName string, env Env) error {
var pushers []protolog.Pusher
if !env.DisableStderrLog {
pushers = append(
pushers,
protolog.NewStandardWritePusher(
protolog.NewFileFlusher(
os.Stderr,
),
),
)
}
if env.LogDir != "" {
pushers = append(
pushers,
protolog.NewStandardWritePusher(
protolog.NewWriterFlusher(
&lumberjack.Logger{
Filename: filepath.Join(env.LogDir, fmt.Sprintf("%s.log", appName)),
MaxBackups: 3,
},
),
),
)
}
if env.SyslogNetwork != "" && env.SyslogAddress != "" {
writer, err := syslog.Dial(
env.SyslogNetwork,
env.SyslogAddress,
syslog.LOG_INFO,
appName,
)
if err != nil {
return err
}
pushers = append(
pushers,
protosyslog.NewPusher(
writer,
protosyslog.PusherOptions{},
),
)
}
if len(pushers) > 0 {
protolog.SetLogger(
protolog.NewStandardLogger(
protolog.NewMultiPusher(
pushers...,
),
),
)
} else {
protolog.SetLogger(
protolog.DiscardLogger,
)
}
protolog.RedirectStdLogger()
if env.LogLevel != "" {
levelValue, ok := protolog.Level_value[fmt.Sprintf("LEVEL_%s", strings.ToUpper(env.LogLevel))]
if !ok {
return fmt.Errorf("pkglog: unknown log level: %s", env.LogLevel)
}
protolog.SetLevel(protolog.Level(levelValue))
}
return nil
}