RabbitMq For IOT

[Tushar Kasundra]

Hi,

    I am basically learning RabbitMQ for IOT. I have few questions i would like to ask,

1) Suppose there are many devices like sensors and other devices, that continuously sending data to RabbitMQ broker. How can i store these data to database? Which method do i need to use for storing data? 

2) I googled about AMQP,MQTT and STOMP protocols. What is the difference between these protocols? Which protocol to use in which case?

Thanks, 

Tushar

[Michael Klishin]

1. See RabbitMQ tutorials at http://www.rabbitmq.com/getstarted.html.

2. The differences cannot be listed shortly. TL;DR: you can start with anything.

For most intents and purposes all of those protocols (AMQP is 2 protocols these days, 0-9-1 and 1.0; I'm referring to 0-9-1) can be "used for IoT" and get the job done quite well.

MQTT lacks authorisation and error notifications from server to clients, both are significant limitations if you ask me. Its advertised benefits for IoT only

matter for extremely low power devices, even then not that much, so it's simply marketing noise.

AMQP 0-9-1 overview can be found at http://www.rabbitmq.com/tutorials/amqp-concepts.html. STOMP spec is so short you don't really

need an overview. MQTT 3.1.1 spec has a reasonable intro as well.

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MK

Staff Software Engineer, Pivotal/RabbitMQ

[Tushar Kasundra]

Hi Michael,

                Thanks for your quick reply. I have gone through your specified link to understand RabbitMQ. But i didn't get any information to store device data. Kindly will you elaborate? How to store data from each device at RabbitMQ broker side?

Thanks,

Tushar

[Manish Sasmal]

HI tushar,
so did you successfully use rabbitmq for iot? I just installed rabbitmq and its working but i am not getting how to send data from microcontroller to rabbitmq broker or receiver. Can you help me?

[Ravi Subramanian]

Manish

Sending message from Sensor node to RabbitMQ. It really depends on the protocol you want to use. Is it MQTT or AMQP? 

Does the hardware (microcontoller SDK) that you are using support MQTT? Based on this, the APIs for publish/subscribe to MQQ will vary.

RabbitMQ supports an MQTT plugin. You need to enable it using the command

rabbitmq-plugins enable rabbitmq-mqtt

Then you need to stop restart the rabbitmq service.

Please let me know if you have any further questions.

Regards

Ravi Subramanian

[Manish Sasmal]

Hello ravi,

No i have only http protocol in device.

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[Ravi Subramanian]

Manish

You cannot send MQTT messages if your device does not have the MQTT stack. MQTT stack is available open source, may be for your device as well. If you can share the name of the hardware/kit, I may be able to help.

Regards

Ravi

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[Manish Sasmal]

hi ravi,

thank you very much for your response. I am explaining what i need. Basically i have a device which sense some data from sensor and then i need to store that data into database which is in cloud and do some other task. My device has only http protocol as i am not developing that device i can not implement mqtt on that. Now to store data my server will expose an API like that https://www.manishsasmal.com/api/connect?id=456784

I need to insert the id i.e. 456784 into the database. Simplest solution is to extract the id using get method then connect to db and run an insert query. But here my device will hit the api in every 40 millisecond thus it will be very difficult to handle that much request in server. if i use the simple solution there will be a chance to loose some data. So my solution is i can store these id in a message queue (rabbitmq or in https://www.cloudamqp.com/) then another process will take those id from message queue and perform the job. I can accept some delay in inserting. SO the problem i am facing is how to store those data in rabbitmq.

Any kind of help is very much appreciated.

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thanks & regards ,

manish sasmal. 

Ph No : +91 9007216349 || +91 9650869106

Skype : manish.sasmal

mailto : manishsa...@gmail.com

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[Ravi Subramanian]

Manish

As per the link https://www.rabbitmq.com/protocols.html, RabbitMQ supports HTTP through a plugin. You need to install HTTP plugin through the following

rabbitmq-service stop

rabbitmq-plugins enable rabbitmq-management

rabbitmq-servuce start

You can test with the following on your local installation of RabbitMQ

More details are given in https://www.rabbitmq.com/management.html and https://cdn.rawgit.com/rabbitmq/rabbitmq-management/rabbitmq_v3_6_12/priv/www/api/index.html

Hope this helps. Let me know if are able to make further progress.

Regards

Ravi

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[Ravi Subramanian]

Manish

We you able use the HTTP plug in and send HTTP messages to rabiitmq?

Regards

Ravi

[Manish Sasmal]

Ravi

i am trying that. they have that option. when i will be done i will update here.

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