1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// Copyright 2015 The Prometheus Authors
// 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 collector
import (
"os"
"regexp"
"strconv"
"strings"
)
func readUintFromFile(path string) (uint64, error) {
data, err := os.ReadFile(path)
if err != nil {
return 0, err
}
value, err := strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64)
if err != nil {
return 0, err
}
return value, nil
}
var metricNameRegex = regexp.MustCompile(`_*[^0-9A-Za-z_]+_*`)
// SanitizeMetricName sanitize the given metric name by replacing invalid characters by underscores.
//
// OpenMetrics and the Prometheus exposition format require the metric name
// to consist only of alphanumericals and "_", ":" and they must not start
// with digits. Since colons in MetricFamily are reserved to signal that the
// MetricFamily is the result of a calculation or aggregation of a general
// purpose monitoring system, colons will be replaced as well.
//
// Note: If not subsequently prepending a namespace and/or subsystem (e.g.,
// with prometheus.BuildFQName), the caller must ensure that the supplied
// metricName does not begin with a digit.
func SanitizeMetricName(metricName string) string {
return metricNameRegex.ReplaceAllString(metricName, "_")
}
|
