ston1th/node_exporter
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Code Issues Releases Activity

Now also migrate gmond and runit.

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This commit is contained in:
Bjoern Rabenstein 2014-06-26 21:16:21 +02:00
commit 28468bebae
4 changed files with 71 additions and 56 deletions
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37
collector/gmond_collector.go
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@ -24,9 +24,8 @@ const (
)
type gmondCollector struct {
Metrics map[string]prometheus.Gauge
config Config
registry prometheus.Registry
Metrics map[string]*prometheus.GaugeVec
config Config
}
func init() {
@ -36,17 +35,16 @@ func init() {
var illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)
// Takes a config struct and prometheus registry and returns a new Collector scraping ganglia.
func NewGmondCollector(config Config, registry prometheus.Registry) (Collector, error) {
func NewGmondCollector(config Config) (Collector, error) {
c := gmondCollector{
config: config,
Metrics: make(map[string]prometheus.Gauge),
registry: registry,
config: config,
Metrics: map[string]*prometheus.GaugeVec{},
}
return &c, nil
}
func (c *gmondCollector) setMetric(name string, labels map[string]string, metric ganglia.Metric) {
func (c *gmondCollector) setMetric(name, cluster string, metric ganglia.Metric) {
if _, ok := c.Metrics[name]; !ok {
var desc string
var title string
@ -62,12 +60,18 @@ func (c *gmondCollector) setMetric(name string, labels map[string]string, metric
}
}
glog.V(1).Infof("Register %s: %s", name, desc)
gauge := prometheus.NewGauge()
c.Metrics[name] = gauge
c.registry.Register(name, desc, prometheus.NilLabels, gauge) // one gauge per metric!
gv := prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: gangliaMetricsPrefix,
Name: name,
Help: desc,
},
[]string{"cluster"},
)
c.Metrics[name] = prometheus.MustRegisterOrGet(gv).(*prometheus.GaugeVec)
}
glog.V(1).Infof("Set %s{%s}: %f", name, labels, metric.Value)
c.Metrics[name].Set(labels, metric.Value)
glog.V(1).Infof("Set %s{cluster=%q}: %f", name, cluster, metric.Value)
c.Metrics[name].WithLabelValues(cluster).Set(metric.Value)
}
func (c *gmondCollector) Update() (updates int, err error) {
@ -91,12 +95,9 @@ func (c *gmondCollector) Update() (updates int, err error) {
for _, host := range cluster.Hosts {
for _, metric := range host.Metrics {
name := gangliaMetricsPrefix + illegalCharsRE.ReplaceAllString(metric.Name, "_")
name := illegalCharsRE.ReplaceAllString(metric.Name, "_")
var labels = map[string]string{
"cluster": cluster.Name,
}
c.setMetric(name, labels, metric)
c.setMetric(name, cluster.Name, metric)
updates++
}
}