package system import ( "fmt" "syscall" "github.com/influxdata/telegraf" "github.com/influxdata/telegraf/plugins/inputs" ) type NetStats struct { ps PS } func (_ *NetStats) Description() string { return "Read TCP metrics such as established, time wait and sockets counts." } var tcpstatSampleConfig = "" func (_ *NetStats) SampleConfig() string { return tcpstatSampleConfig } func (s *NetStats) Gather(acc telegraf.Accumulator) error { netconns, err := s.ps.NetConnections() if err != nil { return fmt.Errorf("error getting net connections info: %s", err) } counts := make(map[string]int) counts["UDP"] = 0 // TODO: add family to tags or else tags := map[string]string{} for _, netcon := range netconns { if netcon.Type == syscall.SOCK_DGRAM { counts["UDP"] += 1 continue // UDP has no status } c, ok := counts[netcon.Status] if !ok { counts[netcon.Status] = 0 } counts[netcon.Status] = c + 1 } fields := map[string]interface{}{ "tcp_established": counts["ESTABLISHED"], "tcp_syn_sent": counts["SYN_SENT"], "tcp_syn_recv": counts["SYN_RECV"], "tcp_fin_wait1": counts["FIN_WAIT1"], "tcp_fin_wait2": counts["FIN_WAIT2"], "tcp_time_wait": counts["TIME_WAIT"], "tcp_close": counts["CLOSE"], "tcp_close_wait": counts["CLOSE_WAIT"], "tcp_last_ack": counts["LAST_ACK"], "tcp_listen": counts["LISTEN"], "tcp_closing": counts["CLOSING"], "tcp_none": counts["NONE"], "udp_socket": counts["UDP"], } acc.AddFields("netstat", fields, tags) return nil } func init() { inputs.Add("netstat", func() telegraf.Input { return &NetStats{ps: newSystemPS()} }) }