How can I create custom formatters in Logrus?

How can I create custom formatters in Logrus?

To create custom formatters in Logrus, you need to implement the Formatter interface. This involves defining a struct and implementing the Format method.

Can you show me a simple example of a custom formatter?

Sure! Here's a basic example:

package main

import (
    "github.com/sirupsen/logrus"
)

type CustomFormatter struct {}

func (f *CustomFormatter) Format(entry *logrus.Entry) ([]byte, error) {
    return []byte(entry.Message + "\n"), nil
}

func main() {
    log := logrus.New()
    log.SetFormatter(&CustomFormatter{})
    log.Info("This is a custom log message")
}

What are some common use cases for custom formatters?

Common use cases include formatting logs for specific output formats, adding timestamps, or including additional metadata.

Is it possible to use multiple formatters?

Yes, you can chain multiple formatters by creating a custom formatter that combines the outputs of other formatters.