| // Copyright Istio Authors |
| // |
| // 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 workloadinstances |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/util/sets" |
| ) |
| |
| // MultiValueMap represents a map where each key might be associated with |
| // multiple values. |
| type MultiValueMap map[string]sets.Set |
| |
| // Insert adds given (key, value) pair into the map. |
| func (m MultiValueMap) Insert(key, value string) MultiValueMap { |
| if values, exists := m[key]; exists { |
| values.Insert(value) |
| return m |
| } |
| m[key] = sets.New(value) |
| return m |
| } |
| |
| // Delete removes given (key, value) pair out of the map. |
| func (m MultiValueMap) Delete(key, value string) MultiValueMap { |
| if values, exists := m[key]; exists { |
| values.Delete(value) |
| if values.IsEmpty() { |
| delete(m, key) |
| } |
| } |
| return m |
| } |