func (p *MNSWriter) Write(data []byte) (n int, err error) {
resource := fmt.Sprintf("queues/%s/%s", p.conf.Queue, "messages")
reqData := ali_mns.MessageSendRequest{
MessageBody: ali_mns.Base64Bytes(data),
DelaySeconds: int64(p.conf.DelaySeconds),
Priority: int64(p.conf.Priority),
}
var resp *http.Response
if resp, err = p.client.Send(ali_mns.POST, nil, reqData, resource); err != nil {
return
}
if resp != nil {
defer resp.Body.Close()
if resp.StatusCode != http.StatusCreated &&
resp.StatusCode != http.StatusOK &&
resp.StatusCode != http.StatusNoContent {
err = ErrMNSWriteMessageError
if body, e := ioutil.ReadAll(resp.Body); e == nil {
spirit.Logger().WithField("actor", spirit.ActorWriter).
WithField("urn", msnWriterURN).
WithField("event", "write").
WithField("url", p.conf.URL).
WithField("queue", p.conf.Queue).
WithField("status_code", resp.StatusCode).
WithField("response", string(body)).
Debugln(err)
}
return
}
}
return
}
func (p *MNSSender) callFlow(delivery spirit.Delivery, flowMetadata *MNSFlowMetadata) {
if flowMetadata == nil {
return
}
sendDeliveryFunc := func(ignoreSendError bool, delivery spirit.Delivery, queueURN map[string]string, queues ...string) (err error) {
if queues == nil || len(queues) == 0 {
return
}
backupURN := delivery.URN()
backupParallel := new(MNSParallelFlowMetadata)
delivery.Payload().Context().Object(mnsSenderQueueParallelIdContext, backupParallel)
// recover
defer func() {
delivery.SetURN(backupURN)
delivery.Payload().SetContext(mnsSenderQueueParallelIdContext, backupParallel)
}()
for _, q := range queues {
if q == "" {
continue
}
parallelQueues := strings.Split(q, "||")
parallelCount := len(parallelQueues)
parallelQueuePid := ""
if parallelCount > 0 {
parallelQueuePid = xid.New().String()
}
for index, queue := range parallelQueues {
// recover
delivery.SetURN(backupURN)
delivery.Payload().SetContext(mnsSenderQueueParallelIdContext, backupParallel)
urn := ""
if queueURN != nil {
urn, _ = queueURN[queue]
}
buf := bytes.Buffer{}
delivery.SetURN(urn)
if parallelCount > 0 {
delivery.Payload().SetContext(mnsSenderQueueParallelIdContext, MNSParallelFlowMetadata{Id: parallelQueuePid, Index: index, Count: parallelCount})
}
if err = p.translator.Out(&buf, delivery); err != nil {
spirit.Logger().
WithField("actor", spirit.ActorSender).
WithField("urn", mnsSenderURN).
WithField("event", "translate delivery").
Errorln(err)
return
} else {
reqData := ali_mns.MessageSendRequest{
MessageBody: ali_mns.Base64Bytes(buf.Bytes()),
DelaySeconds: int64(p.conf.DelaySeconds),
Priority: int64(p.conf.Priority),
}
client := p.getMNSClient(queue)
if _, err = client.SendMessage(reqData); err != nil {
spirit.Logger().
WithField("actor", spirit.ActorSender).
WithField("urn", mnsSenderURN).
WithField("event", "send mns message").
Errorln(err)
if ignoreSendError {
err = nil
continue
}
return
}
}
}
}
return
}
currentQueueURN := map[string]string{}
if err := delivery.Metadata().Object(mnsSenderQueueURNMetadata, ¤tQueueURN); err != nil {
spirit.Logger().
WithField("actor", spirit.ActorSender).
WithField("urn", mnsSenderURN).
WithField("event", "get queue urn").
Errorln(err)
}
if delivery.Payload().LastError() != nil {
// run error flow
if flowMetadata.Error != nil && len(flowMetadata.Error) > 0 {
queueURN := map[string]string{}
for _, queue := range flowMetadata.Error {
if urn, exist := currentQueueURN[queue]; exist {
queueURN[queue] = urn
}
}
delivery.SetMetadata(mnsSenderFlowMetadata, nil)
sendDeliveryFunc(true, delivery, queueURN, flowMetadata.Error...)
}
} else {
// run normal flow
if flowMetadata.Normal != nil && len(flowMetadata.Normal) > 0 {
nextQueue := flowMetadata.Normal[flowMetadata.CurrentFlowId]
queueURN := map[string]string{}
if len(flowMetadata.Normal) > flowMetadata.CurrentFlowId {
tmpRemainQueues := flowMetadata.Normal[flowMetadata.CurrentFlowId:]
remainQueues := []string{}
for _, queue := range tmpRemainQueues {
queues := strings.Split(queue, "||")
remainQueues = append(remainQueues, queues...)
}
for _, queue := range remainQueues {
if urn, exist := currentQueueURN[queue]; exist {
queueURN[queue] = urn
}
}
}
flowMetadata.CurrentFlowId += 1
defer func() { flowMetadata.CurrentFlowId -= 1 }()
delivery.SetMetadata(mnsSenderFlowMetadata, flowMetadata)
sendDeliveryFunc(false, delivery, queueURN, nextQueue)
}
}
}