func (l *SQSListener) waitForMessages(q *sqs.Queue) {
msgResponse, err := q.ReceiveMessage(1)
if err != nil || len(msgResponse.Messages) < 1 {
time.Sleep(l.PollInterval)
return
}
l.handle(&msgResponse.Messages[0], q)
}
func (r *SQSReader) readFromQueueOnce(q *sqs.Queue) error {
r.Logger.Printf("%s: reading messages from queue\n", r.QueueName)
results, err := q.ReceiveMessage(RECV_MAX_MESSAGES)
if err != nil {
return err
}
r.Logger.Printf("%s: read %d messages\n", r.QueueName, len(results.Messages))
for _, message := range results.Messages {
r.enqueueMessage(message.Body, message.ReceiptHandle)
}
return nil
}
func listenOnQueue(q *sqs.Queue, ch chan *sqs.Message) {
for {
resp, err := q.ReceiveMessage(1)
if err != nil {
log.Panic(err)
}
for _, m := range resp.Messages {
ch <- &m
q.DeleteMessage(&m)
}
}
}
func Start(q *sqs.Queue, h Handler, t time.Duration, receiveMessageNum int, client twilio.Client, sender string) {
fmt.Println(fmt.Sprintf("worker: Start polling [%s]", time.Now().Local()))
for {
resp, err := q.ReceiveMessage(receiveMessageNum)
if err != nil {
log.Println(err)
continue
}
if len(resp.Messages) > 0 {
fmt.Printf("\r")
run(q, h, resp, client, sender)
} else {
fmt.Printf(".")
}
time.Sleep(t)
}
}