def decode(message):
try:
payload = json.loads(message.payload.decode("utf-8"))
except ValueError as e:
raise InvalidEventException("Unable to parse JSON. payload=\"%s\" error=%s" % (message.payload, str(e)))
data = None
timestamp = None
# Try to parse a timestamp
try:
if 'ts' in payload:
dt = iso8601.parse_date(payload['ts'])
timestamp = dt.astimezone(pytz.timezone('UTC'))
else:
timestamp = datetime.now(pytz.timezone('UTC'))
except iso8601.ParseError as e:
raise InvalidEventException("Unable to parse event timestamp: %s" % str(e))
# Try to parse the data
if 'd' in payload:
data = payload['d']
# TODO: Flatten JSON, covert into array of key/value pairs
return Message(data, timestamp)
def decode(message):
try:
jsonData = json.dumps(xmltodict.parse(message.payload))
data = json.loads(jsonData.decode("utf-8"))
except ValueError as e:
raise InvalidEventException("Unable to parse XML. payload=\"%s\" error=%s" % (message.payload, str(e)))
timestamp = datetime.now(pytz.timezone('UTC'))
return Message(data, timestamp)
def decode(message):
try:
data = json.loads(message.payload.decode("utf-8"))
except ValueError as e:
raise InvalidEventException("Unable to parse JSON. payload=\"%s\" error=%s" % (message.payload, str(e)))
timestamp = datetime.now(pytz.timezone('UTC'))
# TODO: Flatten JSON, covert into array of key/value pairs
return Message(data, timestamp)
def __init__(self, pahoMessage, messageEncoderModules):
result = COMMAND_RE.match(pahoMessage.topic)
if result:
self.command = result.group(1)
self.format = result.group(2)
if self.format in messageEncoderModules:
message = messageEncoderModules[self.format].decode(pahoMessage)
self.timestamp = message.timestamp
self.data = message.data
else:
raise MissingMessageDecoderException(self.format)
else:
raise InvalidEventException("Received command on invalid topic: %s" % (pahoMessage.topic))
def __init__(self, pahoMessage, messageEncoderModules):
result = NOTIFY_RE.match(pahoMessage.topic)
if result:
self.type = result.group(1)
self.id = result.group(2)
self.format = 'json'
if self.format in messageEncoderModules:
message = messageEncoderModules[self.format].decode(
pahoMessage)
self.timestamp = message.timestamp
self.data = message.data
else:
raise MissingMessageDecoderException(self.format)
else:
raise InvalidEventException(
"Received notification on invalid topic: %s" %
(pahoMessage.topic))
def decode(message):
"""
Convert a generic JSON message
* The entire message is converted to JSON and treated as the message data
* The timestamp of the message is the time that the message is RECEIVED
"""
try:
data = json.loads(message.payload.decode("utf-8"))
except ValueError as e:
raise InvalidEventException(
"Unable to parse JSON. payload=\"%s\" error=%s" %
(message.payload, str(e)))
timestamp = datetime.now(pytz.timezone('UTC'))
# TODO: Flatten JSON, covert into array of key/value pairs
return Message(data, timestamp)
def __init__(self, pahoMessage, messageEncoderModules):
result = DEVICE_EVENT_RE.match(pahoMessage.topic)
if result:
self.deviceType = result.group(1)
self.deviceId = result.group(2)
self.device = self.deviceType + ":" + self.deviceId
self.event = result.group(3)
self.format = result.group(4)
self.payload = pahoMessage.payload
if self.format in messageEncoderModules:
message = messageEncoderModules[self.format].decode(
pahoMessage)
self.timestamp = message.timestamp
self.data = message.data
else:
raise MissingMessageDecoderException(self.format)
else:
raise InvalidEventException(
"Received device event on invalid topic: %s" %
(pahoMessage.topic))
def __init__(self, message):
result = DEVICE_STATUS_RE.match(message.topic)
if result:
self.payload = json.loads(message.payload.decode("utf-8"))
self.deviceType = result.group(1)
self.deviceId = result.group(2)
self.device = self.deviceType + ":" + self.deviceId
'''
Properties from the "Connect" status are common in "Disconnect" status too
{
u'ClientAddr': u'195.212.29.68',
u'Protocol': u'mqtt-tcp',
u'ClientID': u'd:bcaxk:psutil:001',
u'User': u'use-token-auth',
u'Time': u'2014-07-07T06:37:56.494-04:00',
u'Action': u'Connect',
u'ConnectTime': u'2014-07-07T06:37:56.493-04:00',
u'Port': 1883
}
'''
self.clientAddr = self.payload['ClientAddr'] if (
'ClientAddr' in self.payload) else None
self.protocol = self.payload['Protocol'] if (
'Protocol' in self.payload) else None
self.clientId = self.payload['ClientID'] if (
'ClientID' in self.payload) else None
self.user = self.payload['User'] if ('User'
in self.payload) else None
self.time = iso8601.parse_date(
self.payload['Time']) if ('Time' in self.payload) else None
self.action = self.payload['Action'] if ('Action'
in self.payload) else None
self.connectTime = iso8601.parse_date(
self.payload['ConnectTime']) if ('ConnectTime'
in self.payload) else None
self.port = self.payload['Port'] if ('Port'
in self.payload) else None
'''
Additional "Disconnect" status properties
{
u'WriteMsg': 0,
u'ReadMsg': 872,
u'Reason': u'The connection has completed normally.',
u'ReadBytes': 136507,
u'WriteBytes': 32,
}
'''
self.writeMsg = self.payload['WriteMsg'] if (
'WriteMsg' in self.payload) else None
self.readMsg = self.payload['ReadMsg'] if (
'ReadMsg' in self.payload) else None
self.reason = self.payload['Reason'] if ('Reason'
in self.payload) else None
self.readBytes = self.payload['ReadBytes'] if (
'ReadBytes' in self.payload) else None
self.writeBytes = self.payload['WriteBytes'] if (
'WriteBytes' in self.payload) else None
self.closeCode = self.payload['CloseCode'] if (
'CloseCode' in self.payload) else None
self.retained = message.retain
else:
raise InvalidEventException(
"Received device status on invalid topic: %s" %
(message.topic))