gol4ng/logger

package middleware

import (
    "fmt"

    "github.com/gol4ng/logger"
)

// Error provide a middleware that will catch underlying handler errors and print it to stdout
// if passThrough is set to true, the error will be printed and then returned in order to be handled elsewhere (in the overlying handler for example)
func Error(passThrough bool) logger.MiddlewareInterface {
    return func(handler logger.HandlerInterface) logger.HandlerInterface {
        return func(entry logger.Entry) error {
            err := handler(entry)
            if err != nil {
                fmt.Printf("[Error middleware] an error occured : %v\n", err)
                if passThrough {
                    return err
                }
            }
            return nil
        }
    }
}