Created
September 7, 2018 16:15
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etl - Tweaked version of sending message
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# replaces _get_json_message() | |
def _get_json_messages_simulated(json_message): | |
msg = {} | |
if json_message is None: | |
return msg | |
if os.path.exists(json_message) and os.path.isfile(json_message): | |
try: | |
list_of_events = [] | |
with open(json_message, 'r') as f: | |
for line in f: | |
# Using yaml package instead of json due to unicode issues | |
# in Python 2 | |
list_of_events.append(yaml.safe_load(line)) | |
msg = list_of_events | |
except OSError as ose: | |
log.error("OSError while reading JSON Message file. {0}".format( | |
ose)) | |
return msg | |
# Overrides previous override of the ElfPoster.run() | |
def run(self): | |
msg_list = _get_json_messages_simulated(self.json_message) | |
start = datetime.datetime.now() | |
finish = start + datetime.timedelta(seconds=self.duration) | |
for msg in msg_list: | |
s = json.dumps(msg, separators=(', ', ': ')) | |
# publish a JSON equivalent of this Thing's message with a | |
# timestamp | |
log.info("ELF {0} posted a {1} bytes message: {2} on topic: {3}".format( | |
self.thing_name, len(s.encode("utf8")), s, self.topic)) | |
self.mqttc.publish(self.topic, s, self.message_qos) | |
# Check if the posting should stop | |
time.sleep(1) # wait a second between publishing iterations | |
if finish < datetime.datetime.now(): | |
break |
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