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introduce metric naming test (#3789)

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* introduce metric naming test

Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

* Update metrics.go

Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>
This commit is contained in:
Zou Nengren 2020-03-31 14:07:36 +08:00 • committed by GitHub
parent 10d176b811
commit 87214a4c5c
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18 changed files with 297 additions and 97 deletions
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45
plugin/cache/handler.go vendored
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@ -10,7 +10,6 @@ import (
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
"github.com/prometheus/client_golang/prometheus"
)
// ServeDNS implements the plugin.Handler interface.
@ -128,47 +127,3 @@ func (c *Cache) exists(state request.Request) *item {
}
return nil
}
var (
cacheSize = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "size",
Help: "The number of elements in the cache.",
}, []string{"server", "type"})
cacheHits = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "hits_total",
Help: "The count of cache hits.",
}, []string{"server", "type"})
cacheMisses = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "misses_total",
Help: "The count of cache misses.",
}, []string{"server"})
cachePrefetches = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "prefetch_total",
Help: "The number of time the cache has prefetched a cached item.",
}, []string{"server"})
cacheDrops = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "drops_total",
Help: "The number responses that are not cached, because the reply is malformed.",
}, []string{"server"})
servedStale = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "cache",
Name: "served_stale_total",
Help: "The number of requests served from stale cache entries.",
}, []string{"server"})
)