func main() {
fields := flag.String("fields", "", "json-encoded map of fields")
out := flag.String("out", "", "output file to use instead of stdout")
interval := flag.Int("i", 1, "interval to check for log rotation")
flag.Parse()
extra, err := parseFields(*fields)
if err != nil {
log.Fatal(err)
}
o, err := getOutput(*out, *interval)
if err != nil {
log.Fatal(err)
}
w := logstasher.NewWriter(o, extra)
s := bufio.NewScanner(os.Stdin)
for s.Scan() {
_, err := w.Write(s.Bytes())
if err != nil {
log.Fatal(err)
}
}
if err := s.Err(); err != nil {
log.Fatal(err)
}
}
func ExampleWriter() {
f := map[string]interface{}{
"app": "myapp",
"things": []string{"something", "another"},
}
w := logstasher.NewWriter(os.Stdout, f)
log.SetFlags(0)
log.SetOutput(w)
log.Println("hey, logstash!")
}