/
metrics.go
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/
metrics.go
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package ingest
import (
"time"
"github.com/uber-go/tally"
)
// LatencyBuckets are a set of latency buckets useful for measuring things.
type LatencyBuckets struct {
WriteLatencyBuckets tally.DurationBuckets
IngestLatencyBuckets tally.DurationBuckets
}
// NewLatencyBuckets returns write and ingest latency buckets useful for
// measuring ingest latency (i.e. time from datapoint/sample created to time
// ingested) and write latency (i.e. time from received a sample from remote
// source to completion of that write locally).
func NewLatencyBuckets() (LatencyBuckets, error) {
upTo1sBuckets, err := tally.LinearDurationBuckets(0, 100*time.Millisecond, 10)
if err != nil {
return LatencyBuckets{}, err
}
upTo10sBuckets, err := tally.LinearDurationBuckets(time.Second, 500*time.Millisecond, 18)
if err != nil {
return LatencyBuckets{}, err
}
upTo60sBuckets, err := tally.LinearDurationBuckets(10*time.Second, 5*time.Second, 11)
if err != nil {
return LatencyBuckets{}, err
}
upTo60mBuckets, err := tally.LinearDurationBuckets(0, 5*time.Minute, 12)
if err != nil {
return LatencyBuckets{}, err
}
upTo60mBuckets = upTo60mBuckets[1:] // Remove the first 0s to get 5 min aligned buckets
upTo6hBuckets, err := tally.LinearDurationBuckets(time.Hour, 30*time.Minute, 12)
if err != nil {
return LatencyBuckets{}, err
}
upTo24hBuckets, err := tally.LinearDurationBuckets(6*time.Hour, time.Hour, 19)
if err != nil {
return LatencyBuckets{}, err
}
upTo24hBuckets = upTo24hBuckets[1:] // Remove the first 6h to get 1 hour aligned buckets
var writeLatencyBuckets tally.DurationBuckets
writeLatencyBuckets = append(writeLatencyBuckets, upTo1sBuckets...)
writeLatencyBuckets = append(writeLatencyBuckets, upTo10sBuckets...)
writeLatencyBuckets = append(writeLatencyBuckets, upTo60sBuckets...)
writeLatencyBuckets = append(writeLatencyBuckets, upTo60mBuckets...)
var ingestLatencyBuckets tally.DurationBuckets
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo1sBuckets...)
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo10sBuckets...)
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo60sBuckets...)
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo60mBuckets...)
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo6hBuckets...)
ingestLatencyBuckets = append(ingestLatencyBuckets, upTo24hBuckets...)
return LatencyBuckets{
WriteLatencyBuckets: writeLatencyBuckets,
IngestLatencyBuckets: ingestLatencyBuckets,
}, nil
}