mirror of
https://github.com/zrepl/zrepl.git
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74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
package zfscmd
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import (
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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var metrics struct {
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totaltime *prometheus.HistogramVec
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systemtime *prometheus.HistogramVec
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usertime *prometheus.HistogramVec
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}
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var timeLabels = []string{"jobid", "zfsbinary", "zfsverb"}
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var timeBuckets = []float64{0.01, 0.1, 0.2, 0.5, 0.75, 1, 2, 5, 10, 60}
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func init() {
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metrics.totaltime = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: "zrepl",
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Subsystem: "zfscmd",
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Name: "runtime",
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Help: "number of seconds that the command took from start until wait returned",
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Buckets: timeBuckets,
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}, timeLabels)
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metrics.systemtime = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: "zrepl",
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Subsystem: "zfscmd",
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Name: "systemtime",
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Help: "https://golang.org/pkg/os/#ProcessState.SystemTime",
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Buckets: timeBuckets,
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}, timeLabels)
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metrics.usertime = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: "zrepl",
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Subsystem: "zfscmd",
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Name: "usertime",
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Help: "https://golang.org/pkg/os/#ProcessState.UserTime",
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Buckets: timeBuckets,
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}, timeLabels)
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}
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func RegisterMetrics(r prometheus.Registerer) {
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r.MustRegister(metrics.totaltime)
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r.MustRegister(metrics.systemtime)
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r.MustRegister(metrics.usertime)
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}
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func waitPostPrometheus(c *Cmd, err error, now time.Time) {
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if len(c.cmd.Args) < 2 {
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getLogger(c.ctx).WithField("args", c.cmd.Args).
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Warn("prometheus: cannot turn zfs command into metric")
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return
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}
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// Note: do not start parsing other aspects
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// of the ZFS command line. This is not the suitable layer
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// for such a task.
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jobid := getJobIDOrDefault(c.ctx, "_nojobid")
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labelValues := []string{jobid, c.cmd.Args[0], c.cmd.Args[1]}
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metrics.totaltime.
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WithLabelValues(labelValues...).
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Observe(c.Runtime().Seconds())
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metrics.systemtime.WithLabelValues(labelValues...).
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Observe(c.cmd.ProcessState.SystemTime().Seconds())
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metrics.usertime.WithLabelValues(labelValues...).
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Observe(c.cmd.ProcessState.UserTime().Seconds())
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}
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