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hook_udp.go
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/
hook_udp.go
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package qlog
import (
"net"
"reflect"
"github.com/sirupsen/logrus"
)
const (
keyUDPEnabled = "logger.udp.enabled"
keyUDPLevel = "logger.udp.level"
keyUDPHost = "logger.udp.host"
keyUDPUUID = "logger.udp.uuid"
)
// TODO: define a udpLogger as writer, use concurrent module to write data
// type udpLogger struct {
// conn net.Conn
// }
// func newUDPLogger(addr string) (*udpLogger, error) {
// udpAddr, err := net.ResolveUDPAddr("udp", addr)
// if err != nil {
// return nil, err
// }
// conn, err := net.DialUDP("udp", nil, addr)
// if err != nil {
// return nil, err
// }
// return &udpLogger{
// conn: conn,
// }, nil
// }
// UDPHook output message to udp
type UDPHook struct {
b BaseHook
Name string // for new hook
Host string
UUID string
}
// Fire output message to hook writer
func (h *UDPHook) Fire(e *logrus.Entry) error {
if len(h.UUID) > 0 {
e.Data["uuid"] = h.UUID
defer delete(e.Data, "uuid")
}
return h.b.Fire(e)
}
// Levels return all available debug level of a hook
func (h *UDPHook) Levels() []logrus.Level {
return h.b.Levels()
}
// Setup function for UDPHook
func (h *UDPHook) Setup() (err error) {
h.b.Name = h.Name // name is set by reflect
h.b.baseSetup()
h.UUID = v.GetString(keyUDPUUID)
h.Host = v.GetString(keyUDPHost)
udpAddr, err := net.ResolveUDPAddr("udp", h.Host)
if err != nil {
return err
}
conn, err := net.DialUDP("udp", nil, udpAddr)
if err != nil {
return err
}
h.b.writer = conn
return nil
}
var _InitUDPHook = func() interface{} {
cli.Bool(keyUDPEnabled, false, "logger.udp.enabled")
cli.String(keyUDPLevel, "", "logger.udp.level") // DONOT set default level in pflag
registerHook("udp", reflect.TypeOf(UDPHook{}))
return nil
}()