mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
25 lines
810 B
Go
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)
|
||
|
|
}
|