First commit

python-clients/Dockerfile

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+FROM python:onbuild

python-clients/mqtt-consumer.py

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+import paho.mqtt.client as mqtt
+import os
+
+HOST = os.environ.get('MQTT_HOST', 'localhost')
+
+print('Connecting to %s' %HOST)
+
+# The callback for when the client receives a CONNACK response from the server.
+def on_connect(client, userdata, flags, rc):
+    print("Connected with result code "+str(rc))
+
+    # Subscribing in on_connect() means that if we lose the connection and
+    # reconnect then subscriptions will be renewed.
+    #
+    # QOS: 0) no confirmation; 1) at least once; 2) at most once
+
+    client.subscribe("/gsi/#", qos=2)
+
+# The callback for when a PUBLISH message is received from the server.
+def on_message(client, userdata, msg):
+    print(msg.topic+" "+str(msg.payload))
+
+client = mqtt.Client(client_id='mqtt-server', clean_session=False)
+client.on_connect = on_connect
+client.on_message = on_message
+
+client.connect(HOST, 1883, 60)
+
+# Blocking call that processes network traffic, dispatches callbacks and
+# handles reconnecting.
+# Other loop*() functions are available that give a threaded interface and a
+# manual interface.
+client.loop_forever()

python-clients/mqtt-producer.py

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+import paho.mqtt.publish as publish
+import os
+import time
+import socket
+
+HOSTNAME = socket.gethostname()
+
+HOST = os.environ.get('MQTT_HOST', 'localhost')
+
+print('Connecting to %s' %HOST)
+
+topic = "/gsi/test/multiple"
+
+i = 0
+while True:
+    print('%s pushing msg %s' %(HOSTNAME, i))
+    publish.single(topic=topic, payload='%s says %s' %(HOSTNAME, i), qos=1, hostname=HOST)
+    i += 1
+    time.sleep(2)

python-clients/requirements.txt

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+paho-mqtt