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Add Support for Cache and S3 related metrics in Prometheus endpoint (m…
…inio#8591) This PR adds support below metrics - Cache Hit Count - Cache Miss Count - Data served from Cache (in Bytes) - Bytes received from AWS S3 - Bytes sent to AWS S3 - Number of requests sent to AWS S3 Fixes minio#8549
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * MinIO Cloud Storage, (C) 2019 MinIO, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "go.uber.org/atomic" | ||
| ) | ||
|
|
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| // CacheStats - represents bytes served from cache, | ||
| // cache hits and cache misses. | ||
| type CacheStats struct { | ||
| BytesServed atomic.Uint64 | ||
| Hits atomic.Uint64 | ||
| Misses atomic.Uint64 | ||
| } | ||
|
|
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| // Increase total bytes served from cache | ||
| func (s *CacheStats) incBytesServed(n int64) { | ||
| s.BytesServed.Add(uint64(n)) | ||
| } | ||
|
|
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| // Increase cache hit by 1 | ||
| func (s *CacheStats) incHit() { | ||
| s.Hits.Add(uint64(1)) | ||
| } | ||
|
|
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| // Increase cache miss by 1 | ||
| func (s *CacheStats) incMiss() { | ||
| s.Misses.Add(uint64(1)) | ||
| } | ||
|
|
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| // Get total bytes served | ||
| func (s *CacheStats) getBytesServed() uint64 { | ||
| return s.BytesServed.Load() | ||
| } | ||
|
|
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| // Get total cache hits | ||
| func (s *CacheStats) getHits() uint64 { | ||
| return s.Hits.Load() | ||
| } | ||
|
|
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| // Get total cache misses | ||
| func (s *CacheStats) getMisses() uint64 { | ||
| return s.Misses.Load() | ||
| } | ||
|
|
||
| // Prepare new CacheStats structure | ||
| func newCacheStats() *CacheStats { | ||
| return &CacheStats{} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * MinIO Cloud Storage, (C) 2019 MinIO, Inc. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "sync" | ||
|
|
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| "go.uber.org/atomic" | ||
| ) | ||
|
|
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| // Metrics - represents bytes served from backend | ||
| // only implemented for S3 Gateway | ||
| type Metrics struct { | ||
| BytesReceived atomic.Uint64 | ||
| BytesSent atomic.Uint64 | ||
| RequestStats map[string]int | ||
| sync.RWMutex | ||
| } | ||
|
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| // IncBytesReceived - Increase total bytes received from gateway backend | ||
| func (s *Metrics) IncBytesReceived(n int64) { | ||
| s.BytesReceived.Add(uint64(n)) | ||
| } | ||
|
|
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| // GetBytesReceived - Get total bytes received from gateway backend | ||
| func (s *Metrics) GetBytesReceived() uint64 { | ||
| return s.BytesReceived.Load() | ||
| } | ||
|
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| // IncBytesSent - Increase total bytes sent to gateway backend | ||
| func (s *Metrics) IncBytesSent(n int64) { | ||
| s.BytesSent.Add(uint64(n)) | ||
| } | ||
|
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| // GetBytesSent - Get total bytes received from gateway backend | ||
| func (s *Metrics) GetBytesSent() uint64 { | ||
| return s.BytesSent.Load() | ||
| } | ||
|
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| // IncRequests - Increase request sent to gateway backend by 1 | ||
| func (s *Metrics) IncRequests(method string) { | ||
| s.Lock() | ||
| defer s.Unlock() | ||
| if s == nil { | ||
| return | ||
| } | ||
| if s.RequestStats == nil { | ||
| s.RequestStats = make(map[string]int) | ||
| } | ||
| if _, ok := s.RequestStats[method]; ok { | ||
| s.RequestStats[method]++ | ||
| return | ||
| } | ||
| s.RequestStats[method] = 1 | ||
| } | ||
|
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| // GetRequests - Get total number of requests sent to gateway backend | ||
| func (s *Metrics) GetRequests() map[string]int { | ||
| return s.RequestStats | ||
| } | ||
|
|
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| // NewMetrics - Prepare new Metrics structure | ||
| func NewMetrics() *Metrics { | ||
| return &Metrics{} | ||
| } |
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