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https://github.com/jcksnvllxr80/mqtt_example

mqtt example in go, rust, and python
https://github.com/jcksnvllxr80/mqtt_example

docker go mqtt python rust

Last synced: 26 days ago
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mqtt example in go, rust, and python

Host: GitHub
URL: https://github.com/jcksnvllxr80/mqtt_example
Owner: jcksnvllxr80
Created: 2024-09-12T20:10:27.000Z (about 2 months ago)
Default Branch: master
Last Pushed: 2024-09-13T12:56:14.000Z (about 2 months ago)
Last Synced: 2024-09-29T08:41:00.071Z (about 1 month ago)
Topics: docker, go, mqtt, python, rust
Language: Python
Homepage:
Size: 10.7 KB
Stars: 0
Watchers: 1
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

Awesome Lists containing this project

README

# MQTT broker with producer/consumer client

MQTT example.
* The broker is MQTT and runs in a container (using docker-compose).
* The client application contains a producer and multiple consumers
* Permanent (consuming all the time)
* Delayed (Consumes after the producer has finished plus a short delay)
* The client application sends 5 messages to a topic `/mqtt`
* the messages are sent with the retain flag set true (`retain=True`)

NOTE: **mqtt only holds the last message to a given topic so if clients are offline for an extended period,
they will likely lose messages.**

## python output

```text
Cleared retained messages on topic `python/mqtt`
Connected to MQTT Broker with client ID: client-642!
Stopped network loop after clearing retained messages.
Starting permanent listener...
Starting to publish messages...
Connected to MQTT Broker with client ID: listener-client-31!
Connected to MQTT Broker with client ID: client-642!
Send `message: 1` to topic `python/mqtt`
Permanent Listener Received `message: 1` from `python/mqtt` topic
Send `message: 2` to topic `python/mqtt`
Permanent Listener Received `message: 2` from `python/mqtt` topic
Send `message: 3` to topic `python/mqtt`
Permanent Listener Received `message: 3` from `python/mqtt` topic
Send `message: 4` to topic `python/mqtt`
Permanent Listener Received `message: 4` from `python/mqtt` topic
Send `message: 5` to topic `python/mqtt`
Stopped publishing messages.
Permanent Listener Received `message: 5` from `python/mqtt` topic
Stopped network loop after publishing.
---- Simulating an offline service by sending messages first and then receiving later ----
Waiting 3 seconds before subscribing...
Starting network loop for receiving messages...
Delayed Subscriber Received `message: 5` from `python/mqtt` topic
Stopped network loop after receiving messages.

Process finished with exit code 0
```

## rust output

```text
Starting the permanent consumer...
Permanent consumer subscribed to `rust/mqtt`
Permanent consumer is ready
Permanent consumer setup completed.
Starting the producer...
Starting to publish messages...
Publishing `message: 1` to topic `rust/mqtt`
Permanent consumer received `message: 1` from `rust/mqtt` topic
Publishing `message: 2` to topic `rust/mqtt`
Permanent consumer received `message: 2` from `rust/mqtt` topic
Publishing `message: 3` to topic `rust/mqtt`
Permanent consumer received `message: 3` from `rust/mqtt` topic
Publishing `message: 4` to topic `rust/mqtt`
Permanent consumer received `message: 4` from `rust/mqtt` topic
Publishing `message: 5` to topic `rust/mqtt`
Permanent consumer received `message: 5` from `rust/mqtt` topic
Stopped publishing messages.
Waiting 3 seconds before starting the delayed consumer...
Delayed consumer subscribed to `rust/mqtt`
Delayed consumer received `message: 5` from `rust/mqtt` topic
```

## go output

```text
Starting the permanent consumer...
permanent-consumer-1192 connected to broker
permanent-consumer-1192 subscribed to `go/mqtt`
Permanent consumer setup completed.
Starting the producer...
producer-9233 connected to broker
Starting to publish messages...
producer-9233 publishing `message: 1` to topic `go/mqtt`
permanent-consumer-1192 received `message: 1` from `go/mqtt` topic
producer-9233 publishing `message: 2` to topic `go/mqtt`
permanent-consumer-1192 received `message: 2` from `go/mqtt` topic
producer-9233 publishing `message: 3` to topic `go/mqtt`
permanent-consumer-1192 received `message: 3` from `go/mqtt` topic
producer-9233 publishing `message: 4` to topic `go/mqtt`
permanent-consumer-1192 received `message: 4` from `go/mqtt` topic
producer-9233 publishing `message: 5` to topic `go/mqtt`
permanent-consumer-1192 received `message: 5` from `go/mqtt` topic
producer-9233 stopped publishing messages.
Waiting 3 seconds before starting the delayed consumer...
delayed-consumer-36 connected to broker
delayed-consumer-36 subscribed to `go/mqtt`
delayed-consumer-36 received `message: 5` from `go/mqtt` topic
```