mirror of https://github.com/minio/minio.git
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
func TestGetHistogramMetrics(t *testing.T) {
|
|
histBuckets := []float64{0.05, 0.1, 0.25, 0.5, 0.75}
|
|
labels := []string{"GetObject", "PutObject", "CopyObject", "CompleteMultipartUpload"}
|
|
ttfbHist := prometheus.NewHistogramVec(
|
|
prometheus.HistogramOpts{
|
|
Name: "s3_ttfb_seconds",
|
|
Help: "Time taken by requests served by current MinIO server instance",
|
|
Buckets: histBuckets,
|
|
},
|
|
[]string{"api"},
|
|
)
|
|
observations := []struct {
|
|
val float64
|
|
label string
|
|
}{
|
|
{
|
|
val: 0.02,
|
|
label: labels[0],
|
|
},
|
|
{
|
|
val: 0.07,
|
|
label: labels[1],
|
|
},
|
|
{
|
|
val: 0.11,
|
|
label: labels[1],
|
|
},
|
|
{
|
|
val: 0.19,
|
|
label: labels[1],
|
|
},
|
|
{
|
|
val: 0.31,
|
|
label: labels[1],
|
|
},
|
|
{
|
|
val: 0.61,
|
|
label: labels[3],
|
|
},
|
|
{
|
|
val: 0.79,
|
|
label: labels[2],
|
|
},
|
|
}
|
|
ticker := time.NewTicker(1 * time.Millisecond)
|
|
defer ticker.Stop()
|
|
for _, obs := range observations {
|
|
// Send observations once every 1ms, to simulate delay between
|
|
// observations. This is to test the channel based
|
|
// synchronization used internally.
|
|
select {
|
|
case <-ticker.C:
|
|
ttfbHist.With(prometheus.Labels{"api": obs.label}).Observe(obs.val)
|
|
}
|
|
}
|
|
|
|
metrics := getHistogramMetrics(ttfbHist, getBucketTTFBDistributionMD(), false)
|
|
// additional labels for +Inf for all histogram metrics
|
|
if expPoints := len(labels) * (len(histBuckets) + 1); expPoints != len(metrics) {
|
|
t.Fatalf("Expected %v data points but got %v", expPoints, len(metrics))
|
|
}
|
|
}
|