mikrotik-exporter/collector/interface_collector.go

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package collector
import (
"strconv"
"strings"
"github.com/prometheus/client_golang/prometheus"
log "github.com/sirupsen/logrus"
"gopkg.in/routeros.v2/proto"
)
type interfaceCollector struct {
props []string
descriptions map[string]*prometheus.Desc
}
func newInterfaceCollector() routerOSCollector {
c := &interfaceCollector{}
c.init()
return c
}
func (c *interfaceCollector) init() {
c.props = []string{"name", "type", "disabled", "comment", "slave", "actual-mtu", "running", "rx-byte", "tx-byte", "rx-packet", "tx-packet", "rx-error", "tx-error", "rx-drop", "tx-drop", "link-downs"}
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labelNames := []string{"name", "address", "interface", "type", "disabled", "comment", "running", "slave"}
c.descriptions = make(map[string]*prometheus.Desc)
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for _, p := range c.props[5:] {
c.descriptions[p] = descriptionForPropertyName("interface", p, labelNames)
}
}
func (c *interfaceCollector) describe(ch chan<- *prometheus.Desc) {
for _, d := range c.descriptions {
ch <- d
}
}
func (c *interfaceCollector) collect(ctx *collectorContext) error {
stats, err := c.fetch(ctx)
if err != nil {
return err
}
for _, re := range stats {
c.collectForStat(re, ctx)
}
return nil
}
func (c *interfaceCollector) fetch(ctx *collectorContext) ([]*proto.Sentence, error) {
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reply, err := ctx.client.Run("/interface/print", "=.proplist="+strings.Join(c.props, ","))
if err != nil {
log.WithFields(log.Fields{
"device": ctx.device.Name,
"error": err,
}).Error("error fetching interface metrics")
return nil, err
}
return reply.Re, nil
}
func (c *interfaceCollector) collectForStat(re *proto.Sentence, ctx *collectorContext) {
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for _, p := range c.props[5:] {
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c.collectMetricForProperty(p, re, ctx)
}
}
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func (c *interfaceCollector) collectMetricForProperty(property string, re *proto.Sentence, ctx *collectorContext) {
desc := c.descriptions[property]
if value := re.Map[property]; value != "" {
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var (
v float64
vtype prometheus.ValueType
err error
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)
vtype = prometheus.CounterValue
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switch property {
case "running":
vtype = prometheus.GaugeValue
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if value == "true" {
v = 1
} else {
v = 0
}
case "actual-mtu":
vtype = prometheus.GaugeValue
fallthrough
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default:
v, err = strconv.ParseFloat(value, 64)
if err != nil {
log.WithFields(log.Fields{
"device": ctx.device.Name,
"interface": re.Map["name"],
"property": property,
"value": value,
"error": err,
}).Error("error parsing interface metric value")
return
}
}
ctx.ch <- prometheus.MustNewConstMetric(desc, vtype, v, ctx.device.Name, ctx.device.Address,
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re.Map["name"], re.Map["type"], re.Map["disabled"], re.Map["comment"], re.Map["running"], re.Map["slave"])
}
}