Ingesting IoT data into Webhook using MQTT and EMQX | MQTT Webhook Integration
This tutorial will show you how to ingest MQTT data and client events to a webserver through EMQX webhook integration.
Using EMQX's Webhook integration can bring the following advantages to your business:
- Pass Data to More Downstream Systems: Webhook can easily integrate MQTT data into more external systems like analytics platforms, cloud services, etc., enabling multi-system data distribution.
- Real-Time Response and Trigger Business Processes: Through Webhook, external systems can receive MQTT data in real-time and trigger business processes, enabling quick responses. For example, receiving alarm data and triggering business workflows.
- Customize Data Processing: External systems can further process the received data as needed, implementing more complex business logic, without being limited by EMQX's functionalities.
- Loosely Coupled Integration Method: Webhook uses a simple HTTP interface, providing a loosely coupled way of system integration.
In summary, Webhook integration provides real-time, flexible, and customized data integration capabilities, satisfying the need for flexible and rich application development.
Webhook is available in EMQX Open Source, but it offers both advantages and disadvantages compared to EMQX Enterprise, which directly integrates with the database.
Advantages
- Webhook + Webserver allows you to customize data processing logic flexibly according to your needs. You can write custom code to handle data and integrate it with other systems, such as writing to a database, to achieve more complex and personalized data processing operations.
Disadvantages
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Complexity: Introducing Webhook and Webserver adds system complexity. Developing and maintaining additional middleware code may require more resources.
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Performance: Webhook + Webserver solution usually has lower performance when handling many requests and data compared to direct database writing(e.g. mqtt-to-timescaledb). Processing delay may increase due to multiple components, impacting response performance.
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Costs: Involving multiple components (Webhook, Webserver) increases deployment and maintenance costs, adding to system complexity.
| Name | Version | Description |
|---|---|---|
| EMQX | 5.5.0+ | MQTT broker used for message exchange between MQTT clients and the webserver. |
| MQTTX CLI | 1.9.3+ | Command-line tool used to generate simulated data for testing. |
| Node.js | 18.17 | Start a webserver to handle requests from EMQX. |
- Please make sure you have installed the docker, and then running the following commands to start the demo:
docker-compose up -d- Webserver will store data in the
webserver/db.jsonfile, and you can view the data via following REST API:
$ curl http://localhost:3000/events
{"deviceCount":1,"messageCount":1,"eventsHistoryCount":1,"devices":[...],"eventsHistory":[...],"messages":[...]}