blob: c24445a1069082005784631561ea3040e0a15044 [file] [log] [blame]
Matteo Scandoloa4285862020-12-01 18:10:10 -08001// Copyright (c) 2017 Uber Technologies, Inc.
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
15package metrics
16
17import (
18 "sort"
19)
20
21// GetKey converts name+tags into a single string of the form
22// "name|tag1=value1|...|tagN=valueN", where tag names are
23// sorted alphabetically.
24func GetKey(name string, tags map[string]string, tagsSep string, tagKVSep string) string {
25 keys := make([]string, 0, len(tags))
26 for k := range tags {
27 keys = append(keys, k)
28 }
29 sort.Strings(keys)
30 key := name
31 for _, k := range keys {
32 key = key + tagsSep + k + tagKVSep + tags[k]
33 }
34 return key
35}