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Code Block |
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// Receiving elements #PARSER PQL #RUNQUERY in = RECEIVE({ transport = 'MQTT', protocol = 'simplecsv', source = 'mqttsource', datahandler = 'Tuple', options = [ ['topic','Test'], ['Broker','tcp://localhost:1883'], ['Client_ID','OdysseusReceiver'] ], schema = [['Message', 'String']] } ) // Sending elements #PARSER PQL #RUNQUERY ping = TIMER({PERIOD = 1000, SOURCE = 'Timer'}) input = MAP({EXPRESSIONS = ['"Hallo " + toString(counter())']}, ping) out = SENDER({ transport = 'MQTT', protocol = 'simplecsv', sink = 'mqttsink', WRAPPER = 'GenericPush', datahandler = 'Tuple', options = [ ['topic','Test'], ['Broker','tcp://localhost:1883'], ['Client_ID','Odysseus_SenderOdysseusSender'] ] }, input ) |
Remark: Protocol and data handler are just examples. MQTT can be used with any other protcol and data handler (e.g. KeyValue).:
Code Block |
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#PARSER PQL
#RUNQUERY
in = RECEIVE({
transport = 'MQTT',
protocol = 'JSON',
source = 'mqttsource',
datahandler = 'KeyValueObject',
options = [
['topic','Test'],
['Broker','tcp://localhost:1883'],
['Client_ID','OdysseusReceiverKV']
]
}
)
#PARSER PQL
#RUNQUERY
ping = TIMER({PERIOD = 1000, SOURCE = 'Timer'})
input = MAP({EXPRESSIONS = [['"Hallo " + toString(counter())','message']]}, ping)
kv_input = TUPLETOKEYVALUE(input)
out = SENDER({
transport = 'MQTT',
protocol = 'JSON',
sink = 'mqttsink',
WRAPPER = 'GenericPush',
datahandler = 'KeyValueObject',
options = [
['topic','Test'],
['Broker','tcp://localhost:1883'],
['Client_ID','OdysseusSenderKV']
]
}, kv_input
)
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