| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 cancellable |
| |
| import "context" |
| |
| // Context -- |
| type Context interface { |
| context.Context |
| |
| Cancel() |
| } |
| |
| // NewContext -- |
| func NewContext() Context { |
| return NewContextWithParent(context.TODO()) |
| } |
| |
| // NewContextWithParent -- |
| func NewContextWithParent(parent context.Context) Context { |
| c, cc := context.WithCancel(parent) |
| |
| return &cancellableContext{ |
| Context: c, |
| cancel: cc, |
| } |
| } |
| |
| type cancellableContext struct { |
| context.Context |
| cancel func() |
| } |
| |
| func (c *cancellableContext) Cancel() { |
| c.cancel() |
| } |