| // 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 |
| } |