telegraf/internal/syslog/framing.go

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package syslog
import (
"fmt"
"strings"
)
// Framing represents the framing technique we expect the messages to come.
type Framing int
const (
// OctetCounting indicates the transparent framing technique for syslog transport.
OctetCounting Framing = iota
// NonTransparent indicates the non-transparent framing technique for syslog transport.
NonTransparent
)
func (f Framing) String() string {
switch f {
case OctetCounting:
return "OCTET-COUNTING"
case NonTransparent:
return "NON-TRANSPARENT"
}
return ""
}
// UnmarshalTOML implements ability to unmarshal framing from TOML files.
func (f *Framing) UnmarshalTOML(data []byte) (err error) {
return f.UnmarshalText(data)
}
// UnmarshalText implements encoding.TextUnmarshaler
func (f *Framing) UnmarshalText(data []byte) (err error) {
s := string(data)
switch strings.ToUpper(s) {
case `OCTET-COUNTING`:
fallthrough
case `"OCTET-COUNTING"`:
fallthrough
case `'OCTET-COUNTING'`:
*f = OctetCounting
return
case `NON-TRANSPARENT`:
fallthrough
case `"NON-TRANSPARENT"`:
fallthrough
case `'NON-TRANSPARENT'`:
*f = NonTransparent
return
}
*f = -1
return fmt.Errorf("unknown framing")
}
// MarshalText implements encoding.TextMarshaler
func (f Framing) MarshalText() ([]byte, error) {
s := f.String()
if s != "" {
return []byte(s), nil
}
return nil, fmt.Errorf("unknown framing")
}