// getNextValidTXPayloadForDRFromQueue returns the next valid TXPayload from the
// queue for the given data-rate. When it exceeds the max size, the payload will
// be discarded and a notification will be sent to the application.
func getNextValidTXPayloadForDRFromQueue(ctx Context, ns models.NodeSession, dataRate int) (*models.TXPayload, error) {
for {
txPayload, err := storage.GetTXPayloadFromQueue(ctx.RedisPool, ns.DevEUI)
if err != nil {
if err == common.ErrEmptyQueue {
return nil, nil
}
return nil, err
}
if len(txPayload.Data) <= common.Band.MaxPayloadSize[dataRate].N {
return &txPayload, nil
}
// the payload exceeded the max payload size for the current data-rate
// we'll remove the payload from the queue and notify the application
if _, err = storage.ClearInProcessTXPayload(ctx.RedisPool, ns.DevEUI); err != nil {
return nil, err
}
// log a warning
log.WithFields(log.Fields{
"dev_eui": ns.DevEUI,
"data_rate": dataRate,
"frmpayload_size": len(txPayload.Data),
"max_frmpayload_size": common.Band.MaxPayloadSize[dataRate].N,
"reference": txPayload.Reference,
}).Warning("downlink payload max size exceeded")
// notify the application
err = ctx.Application.SendNotification(ns.AppEUI, ns.DevEUI, models.ErrorNotificationType, models.ErrorPayload{
Reference: txPayload.Reference,
DevEUI: ns.DevEUI,
Message: fmt.Sprintf("downlink payload max size exceeded (dr: %d, allowed: %d, got: %d)", dataRate, common.Band.MaxPayloadSize[dataRate].N, len(txPayload.Data)),
})
if err != nil {
return nil, err
}
}
}
func runDataUpTests(ctx Context, devEUI lorawan.EUI64, devAddr lorawan.DevAddr, tests []dataUpTestCase) {
for i, test := range tests {
Convey(fmt.Sprintf("When testing: %s [%d]", test.Name, i), func() {
ctx.Application.(*testApplicationBackend).err = test.ApplicationBackendError
for _, pl := range test.TXPayloadQueue {
So(storage.AddTXPayloadToQueue(ctx.RedisPool, pl), ShouldBeNil)
}
for _, mac := range test.TXMACPayloadQueue {
So(storage.AddMACPayloadToTXQueue(ctx.RedisPool, mac), ShouldBeNil)
}
if test.TXMACPayloadInProcess != nil {
So(storage.AddTXPayloadToQueue(ctx.RedisPool, *test.TXMACPayloadInProcess), ShouldBeNil)
_, err := storage.GetTXPayloadFromQueue(ctx.RedisPool, devEUI) // getting an item from the queue will put it into in-process
So(err, ShouldBeNil)
}
So(test.PHYPayload.EncryptFRMPayload(test.EncryptFRMPayloadKey), ShouldBeNil)
So(test.PHYPayload.SetMIC(test.SetMICKey), ShouldBeNil)
rxPacket := models.RXPacket{
PHYPayload: test.PHYPayload,
RXInfo: test.RXInfo,
}
So(handleRXPacket(ctx, rxPacket), ShouldResemble, test.ExpectedHandleRXPacketError)
Convey("Then the expected rx-info payloads are sent to the network-controller", func() {
So(ctx.Controller.(*testControllerBackend).rxInfoPayloadChan, ShouldHaveLength, len(test.ExpectedControllerRXInfoPayloads))
for _, expPL := range test.ExpectedControllerRXInfoPayloads {
pl := <-ctx.Controller.(*testControllerBackend).rxInfoPayloadChan
So(pl, ShouldResemble, expPL)
}
})
Convey("Then the expected error payloads are sent to the network-controller", func() {
So(ctx.Controller.(*testControllerBackend).errorPayloadChan, ShouldHaveLength, len(test.ExpectedControllerErrorPayloads))
for _, expPL := range test.ExpectedControllerErrorPayloads {
pl := <-ctx.Controller.(*testControllerBackend).errorPayloadChan
So(pl, ShouldResemble, expPL)
}
})
Convey("Then the expected mac-commands are received by the network-controller", func() {
So(ctx.Controller.(*testControllerBackend).rxMACPayloadChan, ShouldHaveLength, len(test.ExpectedControllerRXMACPayloads))
for _, expPl := range test.ExpectedControllerRXMACPayloads {
pl := <-ctx.Controller.(*testControllerBackend).rxMACPayloadChan
So(pl, ShouldResemble, expPl)
}
})
Convey("Then the expected rx-payloads are received by the application-backend", func() {
So(ctx.Application.(*testApplicationBackend).rxPayloadChan, ShouldHaveLength, len(test.ExpectedApplicationRXPayloads))
for _, expPL := range test.ExpectedApplicationRXPayloads {
pl := <-ctx.Application.(*testApplicationBackend).rxPayloadChan
So(pl, ShouldResemble, expPL)
}
})
Convey("Then the expected notifications are received by the application-backend", func() {
So(ctx.Application.(*testApplicationBackend).notificationPayloadChan, ShouldHaveLength, len(test.ExpectedApplicationNotifications))
for _, expPL := range test.ExpectedApplicationNotifications {
pl := <-ctx.Application.(*testApplicationBackend).notificationPayloadChan
So(pl, ShouldResemble, expPL)
}
})
Convey("Then the expected tx-packets are received by the gateway (FRMPayload decrypted and MIC ignored)", func() {
So(ctx.Gateway.(*testGatewayBackend).txPacketChan, ShouldHaveLength, len(test.ExpectedGatewayTXPackets))
for _, expPL := range test.ExpectedGatewayTXPackets {
pl := <-ctx.Gateway.(*testGatewayBackend).txPacketChan
So(pl.PHYPayload.DecryptFRMPayload(test.DecryptExpectedFRMPayloadKey), ShouldBeNil)
expPL.PHYPayload.MIC = pl.PHYPayload.MIC
So(pl, ShouldResemble, expPL)
}
})
Convey("Then the frame-counters are as expected", func() {
ns, err := storage.GetNodeSessionByDevEUI(ctx.RedisPool, devEUI)
So(err, ShouldBeNil)
So(ns.FCntDown, ShouldEqual, test.ExpectedFCntDown)
So(ns.FCntUp, ShouldEqual, test.ExpectedFCntUp)
})
Convey("Then the MACPayload tx-queue is as expected", func() {
macQueue, err := storage.ReadMACPayloadTXQueue(ctx.RedisPool, devAddr)
So(err, ShouldBeNil)
So(macQueue, ShouldResemble, test.ExpectedTXMACPayloadQueue)
})
Convey("Then the next TXPayload is as expected", func() {
txPL, err := storage.GetTXPayloadFromQueue(ctx.RedisPool, devEUI)
if test.ExpectedGetTXPayloadFromQueue == nil {
So(err, ShouldResemble, common.ErrEmptyQueue)
} else {
So(err, ShouldBeNil)
So(txPL, ShouldResemble, *test.ExpectedGetTXPayloadFromQueue)
}
})
})
}
}