Golang Accumulator.AddCounter方法代碼示例

func (_ *SystemStats) Gather(acc telegraf.Accumulator) error {
	loadavg, err := load.Avg()
	if err != nil {
		return err
	}

	hostinfo, err := host.Info()
	if err != nil {
		return err
	}

	users, err := host.Users()
	if err != nil {
		return err
	}

	acc.AddGauge("system", map[string]interface{}{
		"load1":   loadavg.Load1,
		"load5":   loadavg.Load5,
		"load15":  loadavg.Load15,
		"n_users": len(users),
		"n_cpus":  runtime.NumCPU(),
	}, nil)
	acc.AddCounter("system", map[string]interface{}{
		"uptime":        hostinfo.Uptime,
		"uptime_format": format_uptime(hostinfo.Uptime),
	}, nil)

	return nil
}

func (k *Kernel) Gather(acc telegraf.Accumulator) error {
	data, err := k.getProcStat()
	if err != nil {
		return err
	}

	fields := make(map[string]interface{})

	dataFields := bytes.Fields(data)
	for i, field := range dataFields {
		switch {
		case bytes.Equal(field, interrupts):
			m, err := strconv.ParseInt(string(dataFields[i+1]), 10, 64)
			if err != nil {
				return err
			}
			fields["interrupts"] = int64(m)
		case bytes.Equal(field, context_switches):
			m, err := strconv.ParseInt(string(dataFields[i+1]), 10, 64)
			if err != nil {
				return err
			}
			fields["context_switches"] = int64(m)
		case bytes.Equal(field, processes_forked):
			m, err := strconv.ParseInt(string(dataFields[i+1]), 10, 64)
			if err != nil {
				return err
			}
			fields["processes_forked"] = int64(m)
		case bytes.Equal(field, boot_time):
			m, err := strconv.ParseInt(string(dataFields[i+1]), 10, 64)
			if err != nil {
				return err
			}
			fields["boot_time"] = int64(m)
		case bytes.Equal(field, disk_pages):
			in, err := strconv.ParseInt(string(dataFields[i+1]), 10, 64)
			if err != nil {
				return err
			}
			out, err := strconv.ParseInt(string(dataFields[i+2]), 10, 64)
			if err != nil {
				return err
			}
			fields["disk_pages_in"] = int64(in)
			fields["disk_pages_out"] = int64(out)
		}
	}

	acc.AddCounter("kernel", fields, map[string]string{})

	return nil
}

func (s *DiskIOStats) Gather(acc telegraf.Accumulator) error {
	diskio, err := s.ps.DiskIO()
	if err != nil {
		return fmt.Errorf("error getting disk io info: %s", err)
	}

	var restrictDevices bool
	devices := make(map[string]bool)
	if len(s.Devices) != 0 {
		restrictDevices = true
		for _, dev := range s.Devices {
			devices[dev] = true
		}
	}

	for _, io := range diskio {
		_, member := devices[io.Name]
		if restrictDevices && !member {
			continue
		}
		tags := map[string]string{}
		tags["name"] = io.Name
		if !s.SkipSerialNumber {
			if len(io.SerialNumber) != 0 {
				tags["serial"] = io.SerialNumber
			} else {
				tags["serial"] = "unknown"
			}
		}

		fields := map[string]interface{}{
			"reads":       io.ReadCount,
			"writes":      io.WriteCount,
			"read_bytes":  io.ReadBytes,
			"write_bytes": io.WriteBytes,
			"read_time":   io.ReadTime,
			"write_time":  io.WriteTime,
			"io_time":     io.IoTime,
		}
		acc.AddCounter("diskio", fields, tags)
	}

	return nil
}

func (s *SwapStats) Gather(acc telegraf.Accumulator) error {
	swap, err := s.ps.SwapStat()
	if err != nil {
		return fmt.Errorf("error getting swap memory info: %s", err)
	}

	fieldsG := map[string]interface{}{
		"total":        swap.Total,
		"used":         swap.Used,
		"free":         swap.Free,
		"used_percent": swap.UsedPercent,
	}
	fieldsC := map[string]interface{}{
		"in":  swap.Sin,
		"out": swap.Sout,
	}
	acc.AddGauge("swap", fieldsG, nil)
	acc.AddCounter("swap", fieldsC, nil)

	return nil
}

func (s *NetIOStats) Gather(acc telegraf.Accumulator) error {
	netio, err := s.ps.NetIO()
	if err != nil {
		return fmt.Errorf("error getting net io info: %s", err)
	}

	for _, io := range netio {
		if len(s.Interfaces) != 0 {
			var found bool

			for _, name := range s.Interfaces {
				if name == io.Name {
					found = true
					break
				}
			}

			if !found {
				continue
			}
		} else if !s.skipChecks {
			iface, err := net.InterfaceByName(io.Name)
			if err != nil {
				continue
			}

			if iface.Flags&net.FlagLoopback == net.FlagLoopback {
				continue
			}

			if iface.Flags&net.FlagUp == 0 {
				continue
			}
		}

		tags := map[string]string{
			"interface": io.Name,
		}

		fields := map[string]interface{}{
			"bytes_sent":   io.BytesSent,
			"bytes_recv":   io.BytesRecv,
			"packets_sent": io.PacketsSent,
			"packets_recv": io.PacketsRecv,
			"err_in":       io.Errin,
			"err_out":      io.Errout,
			"drop_in":      io.Dropin,
			"drop_out":     io.Dropout,
		}
		acc.AddCounter("net", fields, tags)
	}

	// Get system wide stats for different network protocols
	// (ignore these stats if the call fails)
	netprotos, _ := s.ps.NetProto()
	fields := make(map[string]interface{})
	for _, proto := range netprotos {
		for stat, value := range proto.Stats {
			name := fmt.Sprintf("%s_%s", strings.ToLower(proto.Protocol),
				strings.ToLower(stat))
			fields[name] = value
		}
	}
	tags := map[string]string{
		"interface": "all",
	}
	acc.AddFields("net", fields, tags)

	return nil
}

func (s *CPUStats) Gather(acc telegraf.Accumulator) error {
	times, err := s.ps.CPUTimes(s.PerCPU, s.TotalCPU)
	if err != nil {
		return fmt.Errorf("error getting CPU info: %s", err)
	}
	now := time.Now()

	for i, cts := range times {
		tags := map[string]string{
			"cpu": cts.CPU,
		}

		total := totalCpuTime(cts)

		if s.CollectCPUTime {
			// Add cpu time metrics
			fieldsC := map[string]interface{}{
				"time_user":       cts.User,
				"time_system":     cts.System,
				"time_idle":       cts.Idle,
				"time_nice":       cts.Nice,
				"time_iowait":     cts.Iowait,
				"time_irq":        cts.Irq,
				"time_softirq":    cts.Softirq,
				"time_steal":      cts.Steal,
				"time_guest":      cts.Guest,
				"time_guest_nice": cts.GuestNice,
			}
			acc.AddCounter("cpu", fieldsC, tags, now)
		}

		// Add in percentage
		if len(s.lastStats) == 0 {
			// If it's the 1st gather, can't get CPU Usage stats yet
			continue
		}
		lastCts := s.lastStats[i]
		lastTotal := totalCpuTime(lastCts)
		totalDelta := total - lastTotal

		if totalDelta < 0 {
			s.lastStats = times
			return fmt.Errorf("Error: current total CPU time is less than previous total CPU time")
		}

		if totalDelta == 0 {
			continue
		}
		fieldsG := map[string]interface{}{
			"usage_user":       100 * (cts.User - lastCts.User) / totalDelta,
			"usage_system":     100 * (cts.System - lastCts.System) / totalDelta,
			"usage_idle":       100 * (cts.Idle - lastCts.Idle) / totalDelta,
			"usage_nice":       100 * (cts.Nice - lastCts.Nice) / totalDelta,
			"usage_iowait":     100 * (cts.Iowait - lastCts.Iowait) / totalDelta,
			"usage_irq":        100 * (cts.Irq - lastCts.Irq) / totalDelta,
			"usage_softirq":    100 * (cts.Softirq - lastCts.Softirq) / totalDelta,
			"usage_steal":      100 * (cts.Steal - lastCts.Steal) / totalDelta,
			"usage_guest":      100 * (cts.Guest - lastCts.Guest) / totalDelta,
			"usage_guest_nice": 100 * (cts.GuestNice - lastCts.GuestNice) / totalDelta,
		}
		acc.AddGauge("cpu", fieldsG, tags, now)
	}

	s.lastStats = times

	return nil
}