def post(self):
"""Method to create a device"""
deveui = self.args['deveui']
name = self.args['name']
devclass = self.args['devclass']
enabled = self.args['enabled']
otaa = self.args['otaa']
devaddr = self.args['devaddr']
appeui = self.args['appeui']
nwkskey = self.args['nwkskey']
appskey = self.args['appskey']
message = {}
# Check for required args
required = {'deveui', 'name', 'devclass', 'enabled',
'otaa', 'appeui', 'devaddr', 'nwkskey', 'appskey'}
for r in required:
if otaa is True:
if r in {'devaddr', 'nwkskey', 'appskey'}:
continue
if self.args[r] is None:
message[r] = "Missing the {} parameter.".format(r)
if message:
abort(400, message=message)
# Check this device does not currently exist
exists = yield Device.exists(where=['deveui = ?', deveui])
if exists:
message[r] = "Device {} currently exists.".format(euiString(deveui))
abort(400, message=message)
# Set devaddr to None if this is an otaa device
if otaa:
devaddr = None
# Create and validate
device = Device(deveui=deveui, name=name, devclass=devclass,
enabled=enabled, otaa=otaa, devaddr=devaddr,
appeui=appeui, nwkskey=nwkskey, appskey=appskey,
fcntup=0, fcntdown=0, fcnterror=False)
(valid, message) = yield device.valid(self.server)
if not valid:
abort(400, message=message)
try:
d = yield device.save()
if d is None:
abort(500, message={'error': "Error saving device"})
location = self.restapi.api.prefix + '/device/' + str(device.deveui)
returnValue(({}, 201, {'Location': location}))
except TimeoutError:
# Exception returns 500 to client
log.error("REST API timeout for device POST request")
def processPushDataMessage(self, request, gateway):
"""Process a PUSH_DATA message from a LoraWAN gateway
Args:
request (GatewayMessage): the received gateway message object
gateway (Gateway): the gateway that sent the message
Returns:
True on success, otherwise False
"""
if not request.rxpk:
request.rxpk = []
for rxpk in request.rxpk:
# Decode the MAC message
message = MACMessage.decode(rxpk.data)
if message is None:
log.info(
"MAC message decode error for gateway {gateway}: message "
"timestamp {timestamp}",
gateway=gateway.host,
timestamp=str(rxpk.time))
returnValue(False)
# Check if thisis a duplicate message
if self._checkDuplicateMessage(message):
returnValue(False)
# Join Request
if message.isJoinRequest():
# Get the application using appeui
app = yield Application.find(
where=['appeui = ?', message.appeui], limit=1)
#app = next((a for a in self.applications if
# a.appeui == message.appeui), None)
if app is None:
log.info(
"Message from {deveui} - AppEUI {appeui} "
"does not match any configured applications.",
deveui=euiString(message.deveui),
appeui=message.appeui)
returnValue(False)
# Find the Device
device = yield Device.find(
where=['deveui = ?', message.deveui], limit=1)
if device is None:
#log.info("Message from unregistered device {deveui}",
# deveui=euiString(message.deveui))
#returnValue(False)
# TODO save device to database (cheng)
device = Device(deveui=message.deveui,
name='smk_node',
devclass='A',
enabled=True,
otaa=True,
devaddr=None,
devnonce=[],
appeui=message.appeui,
nwkskey='',
appskey='',
fcntup=0,
fcntdown=0,
fcnterror=False,
snr=[],
snr_average=0)
#device.save()
else:
# Check the device is enabled
if not device.enabled:
log.info("Join request for disabled device {deveui}.",
deveui=euiString(device.deveui))
returnValue(False)
# Process join request
joined = yield self._processJoinRequest(message, app, device)
if joined:
# Update the ADR measures
if self.config.adrenable:
device.updateSNR(rxpk.lsnr)
yield device.update(tx_chan=rxpk.chan,
tx_datr=rxpk.datr,
devaddr=device.devaddr,
nwkskey=device.nwkskey,
appskey=device.appskey,
time=rxpk.time,
tmst=rxpk.tmst,
gw_addr=gateway.host,
fcntup=0,
fcntdown=0,
fcnterror=False,
devnonce=device.devnonce,
snr=device.snr,
snr_average=device.snr_average)
log.info(
"Successful Join request from DevEUI {deveui} "
"for AppEUI {appeui} | Assigned address {devaddr}",
deveui=euiString(device.deveui),
appeui=euiString(app.appeui),
devaddr=devaddrString(device.devaddr))
# Send the join response
device.save()
self._sendJoinResponse(request, rxpk, gateway, app, device)
returnValue(True)
else:
log.info(
"Could not process join request from device "
"{deveui}.",
deveui=euiString(device.deveui))
returnValue(False)
# LoRa message. Check this is a registered device
device = yield self._getActiveDevice(message.payload.fhdr.devaddr)
if device is None:
log.info(
"Message from device using unregistered address "
"{devaddr}",
devaddr=devaddrString(message.payload.fhdr.devaddr))
returnValue(False)
# Check the device is enabled
if not device.enabled:
log.info("Message from disabled device {devaddr}",
devaddr=devaddrString(message.payload.fhdr.devaddr))
returnValue(False)
# Check frame counter
if not device.checkFrameCount(message.payload.fhdr.fcnt,
self.band.max_fcnt_gap,
self.config.fcrelaxed):
log.info("Message from {devaddr} failed frame count check.",
devaddr=devaddrString(message.payload.fhdr.devaddr))
log.debug(
"Received frame count {fcnt}, device frame count {dfcnt}",
fcnt=message.payload.fhdr.fcnt,
dfcnt=device.fcntup)
yield device.update(fcntup=device.fcntup,
fcntdown=device.fcntdown,
fcnterror=device.fcnterror)
returnValue(False)
# Perform message integrity check.
if not message.checkMIC(device.nwkskey):
log.info(
"Message from {devaddr} failed message "
"integrity check.",
devaddr=devaddrString(message.payload.fhdr.devaddr))
returnValue(False)
# Update SNR reading and device
device.updateSNR(rxpk.lsnr)
yield device.update(tx_chan=rxpk.chan,
tx_datr=rxpk.datr,
fcntup=device.fcntup,
fcntdown=device.fcntdown,
fcnterror=device.fcnterror,
time=rxpk.time,
tmst=rxpk.tmst,
adr=bool(message.payload.fhdr.adr),
snr=device.snr,
snr_average=device.snr_average,
gw_addr=gateway.host)
# Set the device rx window parameters
device.rx = self.band.rxparams((device.tx_chan, device.tx_datr),
join=False)
# Process MAC Commands
commands = []
# Standalone MAC command
if message.isMACCommand():
message.decrypt(device.nwkskey)
commands = [MACCommand.decode(message.payload.frmpayload)]
# Contains piggybacked MAC command(s)
elif message.hasMACCommands():
commands = message.commands
for command in commands:
if command.isLinkCheckReq():
self._processLinkCheckReq(device, command, request,
rxpk.lsnr)
elif command.isLinkADRAns():
self._processLinkADRAns(device, command)
# TODO: add other MAC commands
# Process application data message
if message.isUnconfirmedDataUp() or message.isConfirmedDataUp():
# Find the app
app = yield Application.find(
where=['appeui = ?', device.appeui], limit=1)
if app is None:
log.info(
"Message from {devaddr} - AppEUI {appeui} "
"does not match any configured applications.",
devaddr=euiString(device.devaddr),
appeui=device.appeui)
returnValue(False)
# Decrypt frmpayload
message.decrypt(device.appskey)
appdata = str(message.payload.frmpayload)
port = message.payload.fport
# Route the data to an application server via the configured interface
log.info("Outbound message from devaddr {devaddr}",
devaddr=devaddrString(device.devaddr))
interface = interfaceManager.getInterface(app.appinterface_id)
if interface is None:
log.error(
"No outbound interface found for application "
"{app}",
app=app.name)
elif not interface.started:
log.error(
"Outbound interface for application "
"{app} is not started",
app=app.name)
else:
self._outboundAppMessage(interface, device, app, port,
appdata)
# Send an ACK if required
if message.isConfirmedDataUp():
yield self.inboundAppMessage(device.devaddr,
'',
acknowledge=True)