FINNOMENA LOG

FINNOMENA LOG is a Golang library for logging that compatible with Stackdriver.

Installation

Use the go get or go mod.

go get github.com/finnomena/go-fnlog

Usage

package main

import (
	"github.com/finnomena/go-fnlog"
)


func main() {
	fnlog.Info("global")

	logger := fnlog.NewLogger()
	logger.SetLevel(fnlog.TraceLevel)

	logger.Debug("logging with struct")

	var obj = &test{
		logger: logger,
	}

	obj.logger.Warn("log attribute")
	obj.print()

	custom := fnlog.NewLoggerWithOptions(fnlog.Options{
		Writer: os.Stdout,
		Formatter: &fnlog.JSONFormatter{
			Timeformat: time.RFC822Z,
		},
	})

	custom.Info("custom log")
}

Result will be

{"serverity":"info","timestamp":"2020-02-12T01:40:40.058983+07:00","caller":"github.com/finnomena/go-fnlog.(*standard).print","message":"global"}
{"serverity":"debug","timestamp":"2020-02-12T01:40:40.059154+07:00","caller":"github.com/finnomena/go-fnlog.(*standard).print","message":"logging with struct"}
{"serverity":"warn","timestamp":"2020-02-12T01:40:40.05916+07:00","caller":"github.com/finnomena/go-fnlog.(*standard).print","message":"log attribute"}
{"serverity":"error","timestamp":"2020-02-12T01:40:40.059164+07:00","caller":"github.com/finnomena/go-fnlog.(*standard).print","message":"log with method"}
{"serverity":"info","timestamp":"12 Feb 20 01:40 +0700","caller":"github.com/finnomena/go-fnlog.(*standard).print","message":"custom log"}

Using with Echo

import (
    "github.com/labstack/echo/v4"
    "github.com/finnomena/go-fnlog"
)

func main() {
    e := echo.New()

    e.Use(echo.WrapMiddleware(fnlog.LoggingMiddleware()))
    e.GET("/", func(c echo.Context) error {
        fnlog.Info("test")
        return c.String(http.StatusOK, "Hello, World!")
    })

    e.Logger.Fatal(e.Start(":1323"))
}

Use text formatter for reading easier

import (
	"os"
	"github.com/finnomena/go-fnlog"
)

func main() {
	var logger fnlog.Logger

    if os.Getenv("environment") == "develop" {
		logger = fnlog.NewLoggerWithOptions(fnlog.Options{
			Writer: os.Stdout,
			Formatter: &fnlog.TextFormatter{
				Timeformat: "15:04:05",
			},
		})
	} else {
		logger = fnlog.NewLogger()
	}
}

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT