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- // Copyright (c) 2017 Uber Technologies, Inc.
- //
- // 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 metrics
- import (
- "sort"
- )
- // GetKey converts name+tags into a single string of the form
- // "name|tag1=value1|...|tagN=valueN", where tag names are
- // sorted alphabetically.
- func GetKey(name string, tags map[string]string, tagsSep string, tagKVSep string) string {
- keys := make([]string, 0, len(tags))
- for k := range tags {
- keys = append(keys, k)
- }
- sort.Strings(keys)
- key := name
- for _, k := range keys {
- key = key + tagsSep + k + tagKVSep + tags[k]
- }
- return key
- }
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