windows_exporter/internal/collector/udp/udp.go
Jan-Otto Kröpke e6a15d4ec4
chore: Remove registry based perfdata collector (#1742)
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
2024-11-17 21:51:12 +01:00

173 lines
4.3 KiB
Go

//go:build windows
package udp
import (
"errors"
"fmt"
"log/slog"
"github.com/alecthomas/kingpin/v2"
"github.com/prometheus-community/windows_exporter/internal/mi"
"github.com/prometheus-community/windows_exporter/internal/perfdata"
"github.com/prometheus-community/windows_exporter/internal/types"
"github.com/prometheus/client_golang/prometheus"
)
const Name = "udp"
type Config struct{}
var ConfigDefaults = Config{}
// A Collector is a Prometheus Collector for WMI Win32_PerfRawData_Tcpip_TCPv{4,6} metrics.
type Collector struct {
config Config
perfDataCollector4 *perfdata.Collector
perfDataCollector6 *perfdata.Collector
datagramsNoPortTotal *prometheus.Desc
datagramsReceivedTotal *prometheus.Desc
datagramsReceivedErrorsTotal *prometheus.Desc
datagramsSentTotal *prometheus.Desc
}
func New(config *Config) *Collector {
if config == nil {
config = &ConfigDefaults
}
c := &Collector{
config: *config,
}
return c
}
func NewWithFlags(_ *kingpin.Application) *Collector {
c := &Collector{
config: ConfigDefaults,
}
return c
}
func (c *Collector) GetName() string {
return Name
}
func (c *Collector) Close() error {
c.perfDataCollector4.Close()
c.perfDataCollector6.Close()
return nil
}
func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
counters := []string{
datagramsNoPortPerSec,
datagramsReceivedPerSec,
datagramsReceivedErrors,
datagramsSentPerSec,
}
var err error
c.perfDataCollector4, err = perfdata.NewCollector("UDPv4", nil, counters)
if err != nil {
return fmt.Errorf("failed to create UDPv4 collector: %w", err)
}
c.perfDataCollector6, err = perfdata.NewCollector("UDPv6", nil, counters)
if err != nil {
return fmt.Errorf("failed to create UDPv6 collector: %w", err)
}
c.datagramsNoPortTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "datagram_no_port_total"),
"Number of received UDP datagrams for which there was no application at the destination port",
[]string{"af"},
nil,
)
c.datagramsReceivedTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "datagram_received_total"),
"UDP datagrams are delivered to UDP users",
[]string{"af"},
nil,
)
c.datagramsReceivedErrorsTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "datagram_received_errors_total"),
"Number of received UDP datagrams that could not be delivered for reasons other than the lack of an application at the destination port",
[]string{"af"},
nil,
)
c.datagramsSentTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "datagram_sent_total"),
"UDP datagrams are sent from the entity",
[]string{"af"},
nil,
)
return nil
}
// Collect sends the metric values for each metric
// to the provided prometheus Metric channel.
func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
return c.collect(ch)
}
func (c *Collector) collect(ch chan<- prometheus.Metric) error {
data, err := c.perfDataCollector4.Collect()
if err != nil {
return fmt.Errorf("failed to collect UDPv4 metrics: %w", err)
}
if _, ok := data[perfdata.EmptyInstance]; !ok {
return errors.New("no data for UDPv4")
}
c.writeUDPCounters(ch, data[perfdata.EmptyInstance], []string{"ipv4"})
data, err = c.perfDataCollector6.Collect()
if err != nil {
return fmt.Errorf("failed to collect UDPv6 metrics: %w", err)
}
if _, ok := data[perfdata.EmptyInstance]; !ok {
return errors.New("no data for UDPv6")
}
c.writeUDPCounters(ch, data[perfdata.EmptyInstance], []string{"ipv6"})
return nil
}
func (c *Collector) writeUDPCounters(ch chan<- prometheus.Metric, metrics map[string]perfdata.CounterValues, labels []string) {
ch <- prometheus.MustNewConstMetric(
c.datagramsNoPortTotal,
prometheus.CounterValue,
metrics[datagramsNoPortPerSec].FirstValue,
labels...,
)
ch <- prometheus.MustNewConstMetric(
c.datagramsReceivedErrorsTotal,
prometheus.CounterValue,
metrics[datagramsReceivedErrors].FirstValue,
labels...,
)
ch <- prometheus.MustNewConstMetric(
c.datagramsReceivedTotal,
prometheus.GaugeValue,
metrics[datagramsReceivedPerSec].FirstValue,
labels...,
)
ch <- prometheus.MustNewConstMetric(
c.datagramsSentTotal,
prometheus.CounterValue,
metrics[datagramsSentPerSec].FirstValue,
labels...,
)
}