mirror of
https://github.com/woodpecker-ci/woodpecker.git
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b6e47a3f4a
* update github.com/containerd/containerd v1.5.7 -> v1.5.9 * update github.com/lib/pq v1.10.3 -> v1.10.4 * update github.com/prometheus/client_golang v1.11.0 -> v1.12.0 * update github.com/rs/zerolog v1.25.0 -> v1.26.1 * update golang.org/x/crypto 2021-12-15 -> 2022-01-28
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2021 The Prometheus 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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//
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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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//go:build go1.17
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// +build go1.17
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package internal
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import (
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"path"
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"runtime/metrics"
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"strings"
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"github.com/prometheus/common/model"
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)
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// RuntimeMetricsToProm produces a Prometheus metric name from a runtime/metrics
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// metric description and validates whether the metric is suitable for integration
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// with Prometheus.
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//
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// Returns false if a name could not be produced, or if Prometheus does not understand
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// the runtime/metrics Kind.
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//
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// Note that the main reason a name couldn't be produced is if the runtime/metrics
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// package exports a name with characters outside the valid Prometheus metric name
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// character set. This is theoretically possible, but should never happen in practice.
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// Still, don't rely on it.
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func RuntimeMetricsToProm(d *metrics.Description) (string, string, string, bool) {
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namespace := "go"
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comp := strings.SplitN(d.Name, ":", 2)
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key := comp[0]
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unit := comp[1]
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// The last path element in the key is the name,
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// the rest is the subsystem.
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subsystem := path.Dir(key[1:] /* remove leading / */)
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name := path.Base(key)
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// subsystem is translated by replacing all / and - with _.
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subsystem = strings.ReplaceAll(subsystem, "/", "_")
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subsystem = strings.ReplaceAll(subsystem, "-", "_")
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// unit is translated assuming that the unit contains no
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// non-ASCII characters.
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unit = strings.ReplaceAll(unit, "-", "_")
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unit = strings.ReplaceAll(unit, "*", "_")
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unit = strings.ReplaceAll(unit, "/", "_per_")
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// name has - replaced with _ and is concatenated with the unit and
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// other data.
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name = strings.ReplaceAll(name, "-", "_")
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name = name + "_" + unit
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if d.Cumulative {
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name = name + "_total"
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}
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valid := model.IsValidMetricName(model.LabelValue(namespace + "_" + subsystem + "_" + name))
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switch d.Kind {
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case metrics.KindUint64:
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case metrics.KindFloat64:
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case metrics.KindFloat64Histogram:
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default:
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valid = false
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}
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return namespace, subsystem, name, valid
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}
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