aka sklog is a wrapper for go-kit/log package that adds some shorthands, loggers and context packages so its easier to start:

package main

import (
	"github.com/piotrkowalczuk/sklog"
	"github.com/go-kit/kit/log"
	"io"
)

var (
	writer io.Writer
)

func main() {
	// allocate writer
	
	logger := log.NewJSONLogger(writer)
	
	sklog.Info(logger, "just an info", "key", "val")
	sklog.Debug(logger, "some debug information", "key", "value")
	sklog.Error(logger, errors.New("example: fake error"), "key", "value")
	// sklog.Fatal(logger, errors.New("example: fake error that exits"), "key", "value")
	// sklog.Panic(logger, errors.New("example: fake error that panics"), "key", "value")
}

• Info - logs message with level=info, msg=msg and given keyval's.
• Debug - same like info but with debug level.
• Error - logs message with level=error, msg=error.Error() and it tries to create a context from given error using NewContextErrorGeneric. It can be changed using SetContextErrorFunc.
• Fatal - same like error but also exits with code 1.
• Panic - same like error but also panics.

Each package provide logic necessary to get information from error objects.

• ctxjson - encoding/json
• ctxpq - lib/pq
• ctxmgo - gopkg.in/mgo.v2

Logger that prints easy to read (for humans) output, usefull for development. Inspired by Sirupsen/logrus. It can be used with DefaultHTTPFormatter that recognize such keys:

• timestamp
• level
• subsystem
• http_method
• http_path
• http_status
• msg

[2015-10-25T13:16:09+01:00] [debug] [api-server] [post] [/login] [200] - request processed    username=email@example.com

Logger that wraps *testing.T object. It is using only msg key value.

Logger that provides API expected grpc.Logger interface.

Logger that aggregates multiple loggers into one.