var(MaxWorker=os.Getenv("MAX_WORKERS")MaxQueue=os.Getenv("MAX_QUEUE"))//Job represents the job to be runtypeJobstruct{PayloadPayload}// A buffered channel that we can send work requests on.varJobQueuechanJob// Worker represents the worker that executes the jobtypeWorkerstruct{WorkerPoolchanchanJobJobChannelchanJobquitchanbool}funcNewWorker(workerPoolchanchanJob)Worker{returnWorker{WorkerPool:workerPool,JobChannel:make(chanJob),quit:make(chanbool)}}// Start method starts the run loop for the worker, listening for a quit channel in// case we need to stop itfunc(wWorker)Start(){gofunc(){for{// register the current worker into the worker queue.w.WorkerPool<-w.JobChannelselect{casejob:=<-w.JobChannel:// we have received a work request.iferr:=job.Payload.UploadToS3();err!=nil{log.Errorf("Error uploading to S3: %s",err.Error())}case<-w.quit:// we have received a signal to stopreturn}}}()}// Stop signals the worker to stop listening for work requests.func(wWorker)Stop(){gofunc(){w.quit<-true}()}//HandlerfuncpayloadHandler(whttp.ResponseWriter,r*http.Request){ifr.Method!="POST"{w.WriteHeader(http.StatusMethodNotAllowed)return}// Read the body into a string for json decodingvarcontent=&PayloadCollection{}err:=json.NewDecoder(io.LimitReader(r.Body,MaxLength)).Decode(&content)iferr!=nil{w.Header().Set("Content-Type","application/json; charset=UTF-8")w.WriteHeader(http.StatusBadRequest)return}// Go through each payload and queue items individually to be posted to S3for_,payload:=rangecontent.Payloads{// let's create a job with the payloadwork:=Job{Payload:payload}// Push the work onto the queue.JobQueue<-work}w.WriteHeader(http.StatusOK)}