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