frostfs-s3-gw/api/metrics_collector.go

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package api
import (
"github.com/TrueCloudLab/frostfs-s3-gw/internal/version"
"github.com/prometheus/client_golang/prometheus"
)
type stats struct {
desc *prometheus.Desc
}
var (
versionInfo = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "frostfs_s3",
Name: "version_info",
Help: "Version of current FrostFS S3 Gate instance",
},
[]string{
// current version
"version",
},
)
statsMetrics = &stats{
desc: prometheus.NewDesc("frostfs_s3_stats", "Statistics exposed by FrostFS S3 Gate instance", nil, nil),
}
)
func init() {
prometheus.MustRegister(versionInfo)
prometheus.MustRegister(statsMetrics)
prometheus.MustRegister(httpRequestsDuration)
}
func collectNetworkMetrics(ch chan<- prometheus.Metric) {
// Network Sent/Received Bytes (Outbound)
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("frostfs_s3", "tx", "bytes_total"),
"Total number of bytes sent by current FrostFS S3 Gate instance",
nil, nil),
prometheus.CounterValue,
float64(httpStatsMetric.getInputBytes()),
)
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("frostfs_s3", "rx", "bytes_total"),
"Total number of bytes received by current FrostFS S3 Gate instance",
nil, nil),
prometheus.CounterValue,
float64(httpStatsMetric.getOutputBytes()),
)
}
func (s *stats) Describe(ch chan<- *prometheus.Desc) {
ch <- s.desc
}
func (s *stats) Collect(ch chan<- prometheus.Metric) {
// Expose current version information
versionInfo.WithLabelValues(version.Version).Set(1.0)
// connect collectors
collectHTTPMetrics(ch)
collectNetworkMetrics(ch)
}