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Merge pull request #3 from hendrikKahl/cache-metrics
add prometheus metrics to cache
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // SPDX-FileCopyrightText: 2021 SAP SE or an SAP affiliate company and Gardener contributors. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| package metrics | ||
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| import "github.com/prometheus/client_golang/prometheus" | ||
|
|
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| const ( | ||
| ociClientNamespaceName = "ociclient" | ||
| cacheSubsystemName = "cache" | ||
| ) | ||
|
|
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| var ( | ||
| // CacheMemoryUsage discloses memory used by caches | ||
| CacheMemoryUsage = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Namespace: ociClientNamespaceName, | ||
| Subsystem: cacheSubsystemName, | ||
| Name: "memory_usage_bytes", | ||
| Help: "Bytes in memory currently used by cache instance.", | ||
| }, | ||
| []string{"path"}, | ||
| ) | ||
|
|
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| // CacheDiskUsage discloses disk used by caches | ||
| CacheDiskUsage = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Namespace: ociClientNamespaceName, | ||
| Subsystem: cacheSubsystemName, | ||
| Name: "disk_usage_bytes", | ||
| Help: "Bytes on disk currently used by cache instance.", | ||
| }, | ||
| []string{"path"}, | ||
| ) | ||
|
|
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| // CachedItems discloses the number of items stored by caches | ||
| CachedItems = prometheus.NewGaugeVec( | ||
| prometheus.GaugeOpts{ | ||
| Namespace: ociClientNamespaceName, | ||
| Subsystem: cacheSubsystemName, | ||
| Name: "items_total", | ||
| Help: "Total number of items currently cached by instance.", | ||
| }, | ||
| []string{"path"}, | ||
| ) | ||
|
|
||
| // CacheHitsDisk discloses the number of hits for items cached on disk | ||
| CacheHitsDisk = prometheus.NewCounterVec( | ||
| prometheus.CounterOpts{ | ||
| Namespace: ociClientNamespaceName, | ||
| Subsystem: cacheSubsystemName, | ||
| Name: "disk_hits_total", | ||
| Help: "Total number of hits for items cached on disk by an instance.", | ||
| }, | ||
| []string{"path"}, | ||
| ) | ||
|
|
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| // CacheHitsMemory discloses the number of hits for items cached in memory | ||
| CacheHitsMemory = prometheus.NewCounterVec( | ||
| prometheus.CounterOpts{ | ||
| Namespace: ociClientNamespaceName, | ||
| Subsystem: cacheSubsystemName, | ||
| Name: "memory_hits_total", | ||
| Help: "Total number of hits for items cached in memory by an instance.", | ||
| }, | ||
| []string{"path"}, | ||
| ) | ||
| ) | ||
|
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| // RegisterCacheMetrics allows to register ociclient cache metrics with a given prometheus registerer | ||
| func RegisterCacheMetrics(reg prometheus.Registerer) { | ||
| reg.MustRegister(CacheHitsDisk) | ||
| reg.MustRegister(CacheHitsMemory) | ||
| reg.MustRegister(CachedItems) | ||
| reg.MustRegister(CacheDiskUsage) | ||
| reg.MustRegister(CacheMemoryUsage) | ||
| } |
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