forked from fluxcd/flux
/
metrics.go
182 lines (161 loc) · 5.5 KB
/
metrics.go
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package registry
import (
"fmt"
"time"
"github.com/bradfitz/gomemcache/memcache"
"github.com/go-kit/kit/metrics/prometheus"
stdprometheus "github.com/prometheus/client_golang/prometheus"
fluxmetrics "github.com/weaveworks/flux/metrics"
)
const (
LabelRequestKind = "kind"
RequestKindTags = "tags"
RequestKindMetadata = "metadata"
)
var (
fetchDuration = prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
Namespace: "flux",
Subsystem: "registry",
Name: "fetch_duration_seconds",
Help: "Duration of Image metadata fetches, in seconds.",
Buckets: stdprometheus.DefBuckets,
}, []string{fluxmetrics.LabelSuccess})
requestDuration = prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
Namespace: "flux",
Subsystem: "registry",
Name: "request_duration_seconds",
Help: "Duration of HTTP requests made in the course of fetching Image metadata",
}, []string{LabelRequestKind, fluxmetrics.LabelSuccess})
memcacheRequestDuration = prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
Namespace: "flux",
Subsystem: "memcache",
Name: "request_duration_seconds",
Help: "Duration of memcache requests, in seconds.",
Buckets: stdprometheus.DefBuckets,
}, []string{fluxmetrics.LabelMethod, fluxmetrics.LabelSuccess})
)
type instrumentedMemcacheClient struct {
c MemcacheClient
}
func InstrumentMemcacheClient(c MemcacheClient) MemcacheClient {
return &instrumentedMemcacheClient{
c: c,
}
}
func (i *instrumentedMemcacheClient) Add(item *memcache.Item) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Add",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Add(item)
}
func (i *instrumentedMemcacheClient) CompareAndSwap(item *memcache.Item) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "CompareAndSwap",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.CompareAndSwap(item)
}
func (i *instrumentedMemcacheClient) Decrement(key string, delta uint64) (newValue uint64, err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Decrement",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Decrement(key, delta)
}
func (i *instrumentedMemcacheClient) Delete(key string) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Delete",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Delete(key)
}
func (i *instrumentedMemcacheClient) DeleteAll() (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "DeleteAll",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.DeleteAll()
}
func (i *instrumentedMemcacheClient) FlushAll() (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "FlushAll",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.FlushAll()
}
func (i *instrumentedMemcacheClient) Get(key string) (item *memcache.Item, err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Get",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Get(key)
}
func (i *instrumentedMemcacheClient) GetMulti(keys []string) (items map[string]*memcache.Item, err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "GetMulti",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.GetMulti(keys)
}
func (i *instrumentedMemcacheClient) Increment(key string, delta uint64) (newValue uint64, err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Increment",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Increment(key, delta)
}
func (i *instrumentedMemcacheClient) Replace(item *memcache.Item) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Replace",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Replace(item)
}
func (i *instrumentedMemcacheClient) Set(item *memcache.Item) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Set",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Set(item)
}
func (i *instrumentedMemcacheClient) Touch(key string, seconds int32) (err error) {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Touch",
fluxmetrics.LabelSuccess, fmt.Sprint(err == nil),
).Observe(time.Since(begin).Seconds())
}(time.Now())
return i.c.Touch(key, seconds)
}
func (i *instrumentedMemcacheClient) Stop() {
defer func(begin time.Time) {
memcacheRequestDuration.With(
fluxmetrics.LabelMethod, "Stop",
fluxmetrics.LabelSuccess, "true",
).Observe(time.Since(begin).Seconds())
}(time.Now())
i.c.Stop()
}