53f3c2ae65
This chang creates a GaugeInfo metrics type for registering informational (textual) metrics, e.g. geth version number. It also improves the testing for backend-exporters, and uses a shared subpackage in 'internal' to provide sample datasets and ordered registry. Implements #21783 --------- Co-authored-by: Martin Holst Swende <martin@swende.se>
129 lines
5.8 KiB
Go
129 lines
5.8 KiB
Go
package metrics
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import (
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"bufio"
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"fmt"
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"io"
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"log"
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"net"
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"os"
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"strings"
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"time"
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)
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var shortHostName = ""
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// OpenTSDBConfig provides a container with configuration parameters for
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// the OpenTSDB exporter
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type OpenTSDBConfig struct {
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Addr *net.TCPAddr // Network address to connect to
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Registry Registry // Registry to be exported
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FlushInterval time.Duration // Flush interval
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DurationUnit time.Duration // Time conversion unit for durations
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Prefix string // Prefix to be prepended to metric names
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}
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// OpenTSDB is a blocking exporter function which reports metrics in r
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// to a TSDB server located at addr, flushing them every d duration
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// and prepending metric names with prefix.
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func OpenTSDB(r Registry, d time.Duration, prefix string, addr *net.TCPAddr) {
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OpenTSDBWithConfig(OpenTSDBConfig{
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Addr: addr,
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Registry: r,
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FlushInterval: d,
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DurationUnit: time.Nanosecond,
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Prefix: prefix,
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})
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}
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// OpenTSDBWithConfig is a blocking exporter function just like OpenTSDB,
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// but it takes a OpenTSDBConfig instead.
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func OpenTSDBWithConfig(c OpenTSDBConfig) {
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for range time.Tick(c.FlushInterval) {
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if err := openTSDB(&c); nil != err {
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log.Println(err)
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}
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}
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}
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func getShortHostname() string {
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if shortHostName == "" {
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host, _ := os.Hostname()
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if index := strings.Index(host, "."); index > 0 {
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shortHostName = host[:index]
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} else {
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shortHostName = host
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}
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}
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return shortHostName
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}
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// writeRegistry writes the registry-metrics on the opentsb format.
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func (c *OpenTSDBConfig) writeRegistry(w io.Writer, now int64, shortHostname string) {
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du := float64(c.DurationUnit)
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c.Registry.Each(func(name string, i interface{}) {
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switch metric := i.(type) {
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case Counter:
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fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, metric.Count(), shortHostname)
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case CounterFloat64:
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fmt.Fprintf(w, "put %s.%s.count %d %f host=%s\n", c.Prefix, name, now, metric.Count(), shortHostname)
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case Gauge:
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fmt.Fprintf(w, "put %s.%s.value %d %d host=%s\n", c.Prefix, name, now, metric.Value(), shortHostname)
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case GaugeFloat64:
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fmt.Fprintf(w, "put %s.%s.value %d %f host=%s\n", c.Prefix, name, now, metric.Value(), shortHostname)
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case GaugeInfo:
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fmt.Fprintf(w, "put %s.%s.value %d %s host=%s\n", c.Prefix, name, now, metric.Value().String(), shortHostname)
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case Histogram:
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h := metric.Snapshot()
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ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
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fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, h.Count(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.min %d %d host=%s\n", c.Prefix, name, now, h.Min(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.max %d %d host=%s\n", c.Prefix, name, now, h.Max(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, h.Mean(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.std-dev %d %.2f host=%s\n", c.Prefix, name, now, h.StdDev(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.50-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[0], shortHostname)
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fmt.Fprintf(w, "put %s.%s.75-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[1], shortHostname)
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fmt.Fprintf(w, "put %s.%s.95-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[2], shortHostname)
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fmt.Fprintf(w, "put %s.%s.99-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[3], shortHostname)
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fmt.Fprintf(w, "put %s.%s.999-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[4], shortHostname)
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case Meter:
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m := metric.Snapshot()
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fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, m.Count(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.one-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate1(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.five-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate5(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.fifteen-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate15(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, m.RateMean(), shortHostname)
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case Timer:
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t := metric.Snapshot()
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ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
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fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, t.Count(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.min %d %d host=%s\n", c.Prefix, name, now, t.Min()/int64(du), shortHostname)
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fmt.Fprintf(w, "put %s.%s.max %d %d host=%s\n", c.Prefix, name, now, t.Max()/int64(du), shortHostname)
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fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, t.Mean()/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.std-dev %d %.2f host=%s\n", c.Prefix, name, now, t.StdDev()/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.50-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[0]/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.75-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[1]/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.95-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[2]/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.99-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[3]/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.999-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[4]/du, shortHostname)
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fmt.Fprintf(w, "put %s.%s.one-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate1(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.five-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate5(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.fifteen-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate15(), shortHostname)
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fmt.Fprintf(w, "put %s.%s.mean-rate %d %.2f host=%s\n", c.Prefix, name, now, t.RateMean(), shortHostname)
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}
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})
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}
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func openTSDB(c *OpenTSDBConfig) error {
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conn, err := net.DialTCP("tcp", nil, c.Addr)
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if nil != err {
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return err
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}
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defer conn.Close()
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w := bufio.NewWriter(conn)
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c.writeRegistry(w, time.Now().Unix(), getShortHostname())
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w.Flush()
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return nil
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}
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