test2.py

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import paho_mqtt3a as mqttv3, time, random
import contextlib

print dir(mqttv3)

hostname = "localhost"
clientid = "myclientid"
topic = "test2_topic"

def deliveryComplete(context, msgid):
        print "deliveryComplete", msgid

def connectionLost(context, cause):
        print "connectionLost"
        print "rc from reconnect is", mqttv3.connect(self.client)

def messageArrived(context, topicName, message):
        print "messageArrived", message
        #print "clientid", context
        #print "topicName", topicName
        return 1

def onSuccess(context, successData):
        print "onSuccess for", context["clientid"], context["state"], successData
        responseOptions = {"context": context, "onSuccess": onSuccess, "onFailure" : onFailure}
        #responseOptions = {"context": context}
        if context["state"] == "connecting":
                context["state"] = "subscribing"
                print "rc from subscribe is", mqttv3.subscribe(client, topic, 2, responseOptions)
        elif context["state"] == "subscribing":
                context["state"] = "publishing qos 0"
                print "rc from publish is", mqttv3.send(client, topic, "a QoS 0 message", 0, 0, responseOptions)
        elif context["state"] == "publishing qos 0":
                context["state"] = "publishing qos 1"
                print "rc from publish is", mqttv3.send(client, topic, "a QoS 1 message", 1, 0, responseOptions)
        elif context["state"] == "publishing qos 1":
                context["state"] = "publishing qos 2"
                print "rc from publish is", mqttv3.send(client, topic, "a QoS 2 message", 2, 0, responseOptions)
        elif context["state"] == "publishing qos 2":
                context["state"] = "finished"
        print "leaving onSuccess"
        
def onFailure(context, failureData):
        print "onFailure for", context["clientid"]
        context["state"] = "finished"

noclients = 1
myclientid = None
clients = []
for i in range(noclients):
        myclientid = clientid+str(i)
        rc, client = mqttv3.create("tcp://"+hostname+":1883", myclientid)
        #print "client is", hex(client)
        print "rc from create is", rc
        print "rc from setcallbacks is", mqttv3.setcallbacks(client, client, connectionLost, messageArrived, deliveryComplete)
        
        context = {"client" : client, "clientid" : clientid, "state" : "connecting"}
        
        print "rc from connect is", mqttv3.connect(client, {"context": context, "onSuccess": onSuccess, "onFailure": onFailure})
        
        clients.append(context)

while [x for x in clients if x["state"] != "finished"]:
        print [x for x in clients if x["state"] != "finished"]
        time.sleep(1)

for client in clients:
        if mqttv3.isConnected(client["client"]):
                print "rc from disconnect is", mqttv3.disconnect(client["client"], 1000)
        time.sleep(1)
        mqttv3.destroy(client["client"])
        print "after destroy"