gol4ng/logger

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package middleware
 
import (
    "runtime"
 
    "github.com/gol4ng/logger"
)
 
// Caller will add 2 fields in the handled entry context
// eg:
//     _file:/..../file_of_the_handle_caller.go
//     _line:72
func Caller(skip int) logger.MiddlewareInterface {
    return func(handler logger.HandlerInterface) logger.HandlerInterface {
        return func(entry logger.Entry) error {
            _, file, line, ok := runtime.Caller(skip)
 
            if ok {
                if entry.Context == nil {
                    entry.Context = &logger.Context{}
                }
                entry.Context.
                    SetField(logger.String("file", file)).
                    Add("line", line)
            }
            return handler(entry)
        }
    }
}