| /* |
| 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 remote |
| |
| import ( |
| "context" |
| "sync" |
| |
| "github.com/apache/rocketmq-client-go/v2/internal/utils" |
| ) |
| |
| // ResponseFuture |
| type ResponseFuture struct { |
| ResponseCommand *RemotingCommand |
| Err error |
| Opaque int32 |
| callback func(*ResponseFuture) |
| Done chan bool |
| callbackOnce sync.Once |
| ctx context.Context |
| } |
| |
| // NewResponseFuture create ResponseFuture with opaque, timeout and callback |
| func NewResponseFuture(ctx context.Context, opaque int32, callback func(*ResponseFuture)) *ResponseFuture { |
| return &ResponseFuture{ |
| Opaque: opaque, |
| Done: make(chan bool), |
| callback: callback, |
| ctx: ctx, |
| } |
| } |
| |
| func (r *ResponseFuture) executeInvokeCallback() { |
| r.callbackOnce.Do(func() { |
| if r.callback != nil { |
| r.callback(r) |
| } |
| }) |
| } |
| |
| func (r *ResponseFuture) waitResponse() (*RemotingCommand, error) { |
| var ( |
| cmd *RemotingCommand |
| err error |
| ) |
| select { |
| case <-r.Done: |
| cmd, err = r.ResponseCommand, r.Err |
| case <-r.ctx.Done(): |
| err = utils.ErrRequestTimeout |
| r.Err = err |
| } |
| return cmd, err |
| } |