logfile can not output localtime

[cnkmmk]

hi guys, I can not output the localtime in the caddy log file.
the TS alway display UTC.
the server timezone is set,

               Local time: Tue 2022-09-06 15:45:55 CST
           Universal time: Tue 2022-09-06 07:45:55 UTC
                 RTC time: Tue 2022-09-06 07:45:56
                Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

the log content

{"level":"info","ts":"2022/09/06 07:51:40","logger":"http.log.access.log0","msg":"handled request","request":{"remote_addr":"127.0.0.1:55063","uri":"/reflesh/"},"status":204}

[mholt]

(I'm not sure why the docs aren't rendering for this property, but) you can customize the time format: https://caddyserver.com/docs/json/logging/logs/encoder/json/time_format/

[francislavoie]

See https://caddyserver.com/docs/caddyfile/directives/log#format-modules for the supported time format options. I'm not sure if any of those actually use the timezone though, it might just always be UTC.

[mholt]

Those are just presets. You can use any Go-supported time format, which lets you choose the time zone: https://pkg.go.dev/time#pkg-constants

[cnkmmk]

I don't study Golang.
I checked the source code, find this in "encoders.go"

	// time format
	var timeFormatter zapcore.TimeEncoder
	switch lec.TimeFormat {
	case "", "unix_seconds_float":
		timeFormatter = zapcore.EpochTimeEncoder
	case "unix_milli_float":
		timeFormatter = zapcore.EpochMillisTimeEncoder
	case "unix_nano":
		timeFormatter = zapcore.EpochNanosTimeEncoder
	case "iso8601":
		timeFormatter = zapcore.ISO8601TimeEncoder
	default:
		timeFormat := lec.TimeFormat
		switch lec.TimeFormat {
		case "rfc3339":
			timeFormat = time.RFC3339
		case "rfc3339_nano":
			timeFormat = time.RFC3339Nano
		case "wall":
			timeFormat = "2006/01/02 15:04:05"
		case "wall_milli":
			timeFormat = "2006/01/02 15:04:05.000"
		case "wall_nano":
			timeFormat = "2006/01/02 15:04:05.000000000"
		case "common_log":
			timeFormat = "02/Jan/2006:15:04:05 -0700"
		}
		timeFormatter = func(ts time.Time, encoder zapcore.PrimitiveArrayEncoder) {
			encoder.AppendString(ts.UTC().Format(timeFormat))
		}
	}
	cfg.EncodeTime = timeFormatter

[mholt]

Yep, so it's what we told you 👍 Just put in a format that works for you. (Link above describes the format.)

[cnkmmk]

sorry, I mean that the time is UTC in logfile, I want Local.

[cnkmmk]

func (Time) Local
func (t Time) Local() Time
Local returns t with the location set to local time.

func (Time) UTC
func (t Time) UTC() Time
UTC returns t with the location set to UTC.

I can't set the time is Local in log file,
I guess maybe in this

encoder.AppendString(ts.UTC().Format(timeFormat))

[francislavoie]

FYI @cnkmmk I opened #5108 which adds a new option to use local time instead of UTC