need callback functionality

[Hmm90]

Hello is it possible to add/implemente to usage of callbacks?

Like descripted in.

Using the Callback/Continuation Passing based API https://github.com/fusesource/mqtt-client

Thx

[Hmm90]

Or better need the possibility to see to content of the callback message

[rende2005]

@Hmm90 Actually in the "separate_conn" branch of this project, we already applied the "callback" flavor APIs across connect/pub/sub sampler. With SubSampler, you can still get the messages based on either "time interval" or "count of messages".

Please give it a try at https://github.com/emqtt/mqtt-jmeter/releases/tag/v1.0.1

If this is not what you're looking for, please give us more details on your thoughts. Thanks!

[Hmm90]

during MQTT Connect the client is getting a callback with a uuid. Actual it is not possible to see that uuid as callback message.

[rende2005]

1. When connecting, sampler can specify a clientId, a random suffix can be generated if you will (to distinguish each connecting client).
2. When CallbackConnection instance is created, it's a unique object instance, you can see sampler response message like this: "Connection org.fusesource.mqtt.client.CallbackConnection@70612f5d".

Not clear on the "uuid" concept you mentioned. Where did you see it, and what is your usage scenario?

[Hmm90]

I need the payload of the callnack message mqttMessage.getpayload() (org.eclipse.paho.client.mqttv3.MqttMessage)

in my case the payload contains a uuid.

[rende2005]

We don't expect a callback message during the ordinary mqtt connection setup process.
If this is your specific scenario, feel free to extend the plugin code on your own.