48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"strings"
|
|
"time"
|
|
"unicode"
|
|
)
|
|
|
|
// Sanitizer is a MetricDest that replaces nonalphanumeric characters with
|
|
// underscores.
|
|
type Sanitizer struct {
|
|
dest MetricDest
|
|
}
|
|
|
|
// NewSanitizer creates a Sanitizer that sends sanitized metrics to dest.
|
|
func NewSanitizer(dest MetricDest) *Sanitizer { return &Sanitizer{dest: dest} }
|
|
|
|
// Metric implements MetricDest
|
|
func (s *Sanitizer) Metric(application, instance string, key []byte, val float64, ts time.Time) error {
|
|
return s.dest.Metric(sanitize(application), sanitize(instance), sanitizeb(key), val, ts)
|
|
}
|
|
|
|
func sanitize(val string) string {
|
|
return strings.Replace(strings.Map(safechar, val), "..", ".", -1)
|
|
}
|
|
|
|
func sanitizeb(val []byte) []byte {
|
|
return bytes.Replace(bytes.Map(safechar, val), []byte(".."), []byte("."), -1)
|
|
}
|
|
|
|
func safechar(r rune) rune {
|
|
if unicode.IsLetter(r) || unicode.IsNumber(r) {
|
|
return r
|
|
}
|
|
|
|
switch r {
|
|
case '/':
|
|
return '.'
|
|
case '.', '-':
|
|
return r
|
|
}
|
|
return '_'
|
|
}
|