github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/metrics/sinks/statsd/formatter.go (about) 1 // Copyright 2016 Google Inc. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package statsd 16 17 import ( 18 "fmt" 19 "k8s.io/heapster/metrics/core" 20 "strings" 21 "unicode" 22 ) 23 24 type Formatter interface { 25 Format(prefix string, name string, labels map[string]string, customizeLabel CustomizeLabel, metricValue core.MetricValue) (res string, err error) 26 } 27 28 type LabelStyle func(string) string 29 type CustomizeLabel func(string) string 30 31 type LabelCustomizer struct { 32 renameLabels map[string]string 33 labelStyle LabelStyle 34 } 35 36 func (customizer LabelCustomizer) Customize(label string) string { 37 if val, ok := customizer.renameLabels[label]; ok { 38 label = val 39 } 40 return (customizer.labelStyle(label)) 41 } 42 43 func NewFormatter(protocolType string) (formatter Formatter, err error) { 44 switch protocolType { 45 case "etsystatsd": 46 return NewEtsystatsdFormatter(), nil 47 case "influxstatsd": 48 return NewInfluxstatsdFormatter(), nil 49 default: 50 return nil, fmt.Errorf("Unknown statd formatter %s", protocolType) 51 } 52 } 53 54 func DefaultLabelStyle(str string) string { 55 return str 56 } 57 58 func SnakeToLowerCamel(str string) string { 59 res := SnakeToUpperCamel(str) 60 61 ustr := []rune(res) 62 ustr[0] = unicode.ToLower(ustr[0]) 63 res = string(ustr) 64 65 return res 66 } 67 68 func SnakeToUpperCamel(str string) string { 69 res := "" 70 words := strings.Split(str, "_") 71 for _, word := range words { 72 res += strings.Title(word) 73 } 74 return res 75 }