A simple Go client for Khronus.
It works by buffering metrics to send them later in a batch way.
go get -u github.com/despegar/khronus-go-client import . "github.com/despegar/khronus-go-client"
func main() {
client := Client{}
urls := []string{
"http://KhronusHost1:KhronusPort/khronus/metrics",
"http://KhronusHost2:KhronusPort/khronus/metrics",
}
client.Config().Urls(urls).Interval(30)
}The urls array is a list of all api endpoints of the khronus servers The send interval is how often the metrics are sent to Khronus.
client.Timer("metric-name").Record(300)This will push to Khronus a metric named "metric-name" with a measured value of 300 milliseconds with the current timestamp.
client.Timer("metric-name").RecordWithTs(time.Now().Unix()*1000, 300)This will push to Khronus a metric with a particular timestamp (timestamps are in milliseconds).
client.Timer("metric-name").Record(300, 100, 4400, 35)You can also pass multiple value for the same timestamp.
Available type of metrics are Counter, Timer, Gauge. All use the Record() and RecordWithTs() methods to store and send metics1
client.Timer("metric-timer").Record(300)
client.Gauge("metric-gauge").Record(300)
client.Counter("metric-counter").Record(300)You can also use a channel to send metrics
import . "github.com/despegar/khronus-go-client"
func main() {
channel := make(chan *Metric, 10)
client := Client{}
// Leave interval and urls as default
// interval : 30 seconds
// urls :127.0.0.1:80
client.Config().Channel(channel)
channel <- Gauge("test").Record(100)
}1 Of course this is idiomatically incorrect but simplify code. Timer should use RecordTime, counter should use Increment, etc.