circolog/format.go

40 lines
1,001 B
Go
Raw Normal View History

2018-08-23 15:35:55 +02:00
package circolog
import (
"bytes"
"text/template"
"time"
"gopkg.in/mcuadros/go-syslog.v2/format"
)
// Formatter is an interface, so that multiple implementations can exist
type Formatter func(format.LogParts) string
var tmplFuncs template.FuncMap
var syslogTmpl *template.Template
func init() {
tmplFuncs := template.FuncMap{
"dateFormat": func(dt time.Time, fmt string) string {
return dt.Format(fmt)
},
"rfc822": func(dt time.Time) string {
return dt.Format(time.RFC822)
},
}
syslogTmpl = template.Must(template.New("syslog").Funcs(tmplFuncs).Parse(
"{{rfc822 (index . \"timestamp\")}} {{index . \"hostname\"}} " +
"{{index . \"app_name\"}}" +
"{{ if (ne (index . \"proc_id\") \"-\")}}[{{index . \"proc_id\"}}]{{end}}: " +
"{{index . \"message\"}}",
))
}
// FormatSyslog format a message in the typical format used in /var/log/messages
func FormatSyslog(msg format.LogParts) string {
var buf bytes.Buffer
syslogTmpl.Execute(&buf, msg)
return buf.String()
}