// handlePayloadMessage attempts to add each task to the taskengine and, if it can, acks the request.
func handlePayloadMessage(responseChan chan<- string, cluster, containerInstanceArn string, payload *ecsacs.PayloadMessage, taskEngine engine.TaskEngine, client api.ECSClient, saver statemanager.Saver) {
if payload.MessageId == nil {
log.Crit("Recieved a payload with no message id", "payload", payload)
return
}
allTasksHandled := addPayloadTasks(client, cluster, containerInstanceArn, payload, taskEngine)
// save the state of tasks we know about after passing them to the task engine
err := saver.Save()
if err != nil {
log.Error("Error saving state for payload message!", "err", err, "messageId", *payload.MessageId)
// Don't ack; maybe we can save it in the future.
return
}
if allTasksHandled {
go func() {
// Throw the ack in async; it doesn't really matter all that much and this is blocking handling more tasks.
responseChan <- *payload.MessageId
}()
// Record the sequence number as well
if payload.SeqNum != nil {
SequenceNumber.Set(*payload.SeqNum)
}
}
}
