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// Package implements a Graylog-backed handler.
package graylog
import (
"github.com/apex/log"
"github.com/aphistic/golf"
)
// Handler implementation.
type Handler struct {
logger *golf.Logger
client *golf.Client
}
// New handler.
// Connection string should be in format "udp://<ip_address>:<port>".
// Server should have GELF input enabled on that port.
func New(url string) (*Handler, error) {
c, err := golf.NewClient()
if err != nil {
return nil, err
}
err = c.Dial(url)
if err != nil {
return nil, err
}
l, err := c.NewLogger()
if err != nil {
return nil, err
}
return &Handler{
logger: l,
client: c,
}, nil
}
// HandleLog implements log.Handler.
func (h *Handler) HandleLog(e *log.Entry) error {
switch e.Level {
case log.DebugLevel:
return h.logger.Dbgm(e.Fields, e.Message)
case log.InfoLevel:
return h.logger.Infom(e.Fields, e.Message)
case log.WarnLevel:
return h.logger.Warnm(e.Fields, e.Message)
case log.ErrorLevel:
return h.logger.Errm(e.Fields, e.Message)
case log.FatalLevel:
return h.logger.Critm(e.Fields, e.Message)
}
return nil
}
// Closes connection to server, flushing message queue.
func (h *Handler) Close() error {
return h.client.Close()
}
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