A Custom Logger

nlogger is a custom logger package to make a log. The logs will be written inside the log directory. Here is a sample log file text.

2021.08.13 20:24:08 [ Error ]		strconv.Atoi: parsing "ab": invalid syntax - 2021.08.13 20:24:08
2021.08.13 20:24:08 [ Warn ]		This is a sample warning message! - 2021.08.13 20:24:08
2021.08.13 20:24:08 [ Update ]		Product - pr1031: Product updated. - 2021.08.13 20:24:08
2021.08.13 20:24:08 [ Delete ]		Order - or4116: Order deleted. - 2021.08.13 20:24:08
2021.08.13 20:24:08 [ Endpoint ]	/api/order/delete/3 - 127.0.0.1 - 2021.08.13 20:24:08

Install

go get github.com/nahidhasan98/nlogger

Examples

Let's start by instantiating a new logger service.

import "github.com/nahidhasan98/nlogger"

func main() {
    //to write log in a default log file
    cLog := nlogger.NewLogger()

    //to write log in a provided file named file
    cLog := nlogger.NewLoggerName("mylog.log")
}

1. Error Log

Error() creates an error log describing the provided error and time.

func main() {
    //writing an error log
    cLog.Error(err, time.Now())
}

2. Warn Log

Warn() creates an warning log describing the provided warning message and time.

func main() {
    //writing an warning log
    cLog.Warn("This is a sample warning message!", time.Now())
}

3. Update Log

Update() creates a log for an updated item. Here entity indicates what type of item is updated such as: user, product, cart etc. And id indicates the id of updated item and msg for providing a custom message.

func main() {
    //writing an update log
    cLog.Update("Product", "pr1031", "Product updated.", time.Now())
}

4. Delete Log

Delete() creates a log for a deleted item. Here entity indicates what type of item is deleted such as: user, product, cart etc. And id indicates the id of deleted item and msg for providing a custom message.

func main() {
    //writing a delete log
    cLog.Delete("Order", "or4116", "Order deleted.", time.Now())
}

5. Endpoint Log

Endpoint() creates a log describing the provided endpoint that is visited by a client. It also mention the client's ip address and the visiting time.

func main() {
    //writing an endpoint log
    cLog.Endpoint("/api/order/delete/3", "127.0.0.1", time.Now())
}