minio/cmd/gateway-metrics.go
Nitish Tiwari 3df7285c3c 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 #8549
2019-12-05 23:16:06 -08:00

80 lines
2.0 KiB
Go

/*
* 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"
"go.uber.org/atomic"
)
// 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
}
// IncBytesReceived - Increase total bytes received from gateway backend
func (s *Metrics) IncBytesReceived(n int64) {
s.BytesReceived.Add(uint64(n))
}
// GetBytesReceived - Get total bytes received from gateway backend
func (s *Metrics) GetBytesReceived() uint64 {
return s.BytesReceived.Load()
}
// IncBytesSent - Increase total bytes sent to gateway backend
func (s *Metrics) IncBytesSent(n int64) {
s.BytesSent.Add(uint64(n))
}
// GetBytesSent - Get total bytes received from gateway backend
func (s *Metrics) GetBytesSent() uint64 {
return s.BytesSent.Load()
}
// 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
}
// GetRequests - Get total number of requests sent to gateway backend
func (s *Metrics) GetRequests() map[string]int {
return s.RequestStats
}
// NewMetrics - Prepare new Metrics structure
func NewMetrics() *Metrics {
return &Metrics{}
}