github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/metrics/sinks/statsd/influxstatsd_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  	"bytes"
    19  	"fmt"
    20  	"github.com/golang/glog"
    21  	"k8s.io/heapster/metrics/core"
    22  	"sort"
    23  	"strings"
    24  )
    25  
    26  type InfluxstatsdFormatter struct {
    27  	delimReplacer *strings.Replacer
    28  }
    29  
    30  func (formatter *InfluxstatsdFormatter) Format(prefix string, name string, labels map[string]string, customizeLabel CustomizeLabel, metricValue core.MetricValue) (res string, err error) {
    31  	var buffer bytes.Buffer
    32  	buffer.WriteString(fmt.Sprintf("%s%s", formatter.delimReplacer.Replace(prefix), formatter.delimReplacer.Replace(name)))
    33  	expandedLabels := formatter.expandUserLabels(labels)
    34  	keys := make([]string, len(expandedLabels))
    35  	for k := range expandedLabels {
    36  		keys = append(keys, k)
    37  	}
    38  	sort.Strings(keys)
    39  	for _, k := range keys {
    40  		v := expandedLabels[k]
    41  		if v != "" {
    42  			buffer.WriteString(fmt.Sprintf(",%s=%s", customizeLabel(formatter.delimReplacer.Replace(k)), formatter.delimReplacer.Replace(v)))
    43  		}
    44  	}
    45  	buffer.WriteString(fmt.Sprintf(":%v|g", metricValue.GetValue()))
    46  
    47  	return buffer.String(), nil
    48  }
    49  
    50  func (formatter *InfluxstatsdFormatter) expandUserLabels(labels map[string]string) map[string]string {
    51  	res := make(map[string]string)
    52  	var userLabelStr string
    53  	for k, v := range labels {
    54  		if k == core.LabelLabels.Key {
    55  			userLabelStr = v
    56  		} else {
    57  			res[k] = v
    58  		}
    59  	}
    60  	kvPairs := strings.Split(userLabelStr, ",")
    61  	for _, kvPair := range kvPairs {
    62  		kv := strings.Split(kvPair, ":")
    63  		if len(kv) >= 2 {
    64  			res[kv[0]] = kv[1]
    65  		}
    66  	}
    67  	return res
    68  }
    69  
    70  func NewInfluxstatsdFormatter() Formatter {
    71  	glog.V(2).Info("influxstatsd formatter is created")
    72  	return &InfluxstatsdFormatter{
    73  		delimReplacer: strings.NewReplacer(",", "_", ":", "_", "=", "_", "|", "_"),
    74  	}
    75  }