opnsense-exporter/internal/collector/unbound_dns.go

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package collector
import (
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"github.com/st3ga/opnsense-exporter/opnsense"
)
type unboundDNSCollector struct {
log log.Logger
subsystem string
instance string
uptime *prometheus.Desc
}
func init() {
collectorInstances = append(collectorInstances, &unboundDNSCollector{
subsystem: "unbound_dns",
})
}
func (c *unboundDNSCollector) Name() string {
return c.subsystem
}
func (c *unboundDNSCollector) Register(namespace, instanceLabel string, log log.Logger) {
c.log = log
c.instance = instanceLabel
level.Debug(c.log).
Log("msg", "Registering collector", "collector", c.Name())
c.uptime = buildPrometheusDesc(c.subsystem, "uptime_seconds",
"Uptime of the unbound DNS service in seconds",
nil,
)
}
func (c *unboundDNSCollector) Describe(ch chan<- *prometheus.Desc) {
ch <- c.uptime
}
func (c *unboundDNSCollector) Update(client *opnsense.Client, ch chan<- prometheus.Metric) *opnsense.APICallError {
data, err := client.FetchUnboundOverview()
if err != nil {
return err
}
ch <- prometheus.MustNewConstMetric(
c.uptime,
prometheus.GaugeValue,
float64(data.UptimeSeconds),
c.instance,
)
return nil
}