open-nomad/vendor/github.com/RackSec/srslog/framer.go
2016-08-31 23:05:15 +02:00

25 lines
810 B
Go

package srslog
import (
"fmt"
)
// Framer is a type of function that takes an input string (typically an
// already-formatted syslog message) and applies "message framing" to it. We
// have different framers because different versions of the syslog protocol
// and its transport requirements define different framing behavior.
type Framer func(in string) string
// DefaultFramer does nothing, since there is no framing to apply. This is
// the original behavior of the Go syslog package, and is also typically used
// for UDP syslog.
func DefaultFramer(in string) string {
return in
}
// RFC5425MessageLengthFramer prepends the message length to the front of the
// provided message, as defined in RFC 5425.
func RFC5425MessageLengthFramer(in string) string {
return fmt.Sprintf("%d %s", len(in), in)
}