How can I handle errors effectively using Logrus logging in Go?

How can I handle errors effectively using Logrus logging in Go?

To handle errors effectively with Logrus, you can use structured logging to capture error details. Here's a basic example:

if err != nil {
    log.WithFields(log.Fields{
        "error": err,
        "context": "additional context here",
    }).Error("An error occurred")
}

This way, you log the error along with any relevant context.

Can I log different levels of errors with Logrus?

Yes, Logrus supports different log levels such as Info, Warn, Error, and Fatal. You can use them based on the severity of the error. For example:

if err != nil {
    log.Error("Critical error: ", err)
} else {
    log.Info("Operation completed successfully")
}

What if I want to log errors to a file instead of the console?

You can set up Logrus to log to a file by using a file writer. Here's how you can do it:

file, err := os.OpenFile("logfile.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err == nil {
    log.SetOutput(file)
} else {
    log.Info("Failed to log to file, using default stderr")
}

Is it possible to add custom fields to my logs?

Absolutely! You can add custom fields using WithFields. For example:

log.WithFields(log.Fields{
    "user_id": userID,
    "action": "login",
}).Info("User logged in")