func ExamplePushCollectors() {
hostname, _ := os.Hostname()
completionTime := prometheus.NewGauge(prometheus.GaugeOpts{
Name: "db_backup_last_completion_time",
Help: "The timestamp of the last succesful completion of a DB backup.",
})
completionTime.Set(float64(time.Now().Unix()))
if err := prometheus.PushCollectors(
"db_backup", hostname,
"http://pushgateway:9091",
completionTime,
); err != nil {
fmt.Println("Could not push completion time to Pushgateway:", err)
}
}
func ExampleGauge() {
opsQueued := prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "our_company",
Subsystem: "blob_storage",
Name: "ops_queued",
Help: "Number of blob storage operations waiting to be processed.",
})
prometheus.MustRegister(opsQueued)
// 10 operations queued by the goroutine managing incoming requests.
opsQueued.Add(10)
// A worker goroutine has picked up a waiting operation.
opsQueued.Dec()
// And once more...
opsQueued.Dec()
}