timestamper

text transformer to put timestamps. It is very useful for logging.

Description

The text transformer to put timestamps. The timestamper implements golang.org/x/text/transform.Transform interface.

Synopsis

Easy Usage

var s transform.Transformer = timestamper.New()
var w io.WriteCloser = transform.NewWriter(os.Stdout, s)
fmt.Fprint(w, "Hello\nWorld!")
// Output:
// 2019-02-11T01:14:54.093021+09:00 Hello
// 2019-02-11T01:14:54.093151+09:00 World!

Functional Option

s1 := timestamper.New(timestamper.UTC()) // use UTC timestamp
s2 := timestamper.New(timestamper.Layout("06-01-02 15:04:05 ")) // specify custom layout

Installation

% go get github.com/Songmu/timestamper
% go install github.com/Songmu/timestamper/cmd/timestamp

Usage

How to use the included command line tool called timestamp.

% tail -f path/to/log | timestamp
...log with timestamp here...

Author

Songmu