mirror of https://github.com/knative/pkg.git
59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
/*
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Copyright 2019 The Knative Authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 metrics
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import (
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"context"
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"go.opencensus.io/stats"
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)
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// TODO should be properly refactored and pieces should move to eventing and serving, as appropriate.
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// See https://github.com/knative/pkg/issues/608
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// Record stores the given Measurement from `ms` in the current metrics backend.
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func Record(ctx context.Context, ms stats.Measurement, ros ...stats.Options) {
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getCurMetricsConfig().record(ctx, []stats.Measurement{ms}, ros...)
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}
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// RecordBatch stores the given Measurements from `mss` in the current metrics backend.
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// All metrics should be reported using the same Resource.
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func RecordBatch(ctx context.Context, mss ...stats.Measurement) {
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getCurMetricsConfig().record(ctx, mss)
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}
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// Buckets125 generates an array of buckets with approximate powers-of-two
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// buckets that also aligns with powers of 10 on every 3rd step. This can
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// be used to create a view.Distribution.
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func Buckets125(low, high float64) []float64 {
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buckets := []float64{low}
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for last := low; last < high; last *= 10 {
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buckets = append(buckets, 2*last, 5*last, 10*last)
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}
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return buckets
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}
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// BucketsNBy10 generates an array of N buckets starting from low and
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// multiplying by 10 n times.
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func BucketsNBy10(low float64, n int) []float64 {
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buckets := []float64{low}
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for last, i := low, len(buckets); i < n; last, i = 10*last, i+1 {
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buckets = append(buckets, 10*last)
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}
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return buckets
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}
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