aethermagic 0.0.9

AetherMagic - Communications between microservices over MQTT

AetherMagic

Communications between microservices over MQTT

The goal is to create communication between microservices, using such advantages as:

• Scaling (multiple microservices to perform one group of tasks)
• Distribution of tasks (only one microserver receives a task in a group)
• Distribution of access rights for specific tasks/roles (setting or execution) and division, if necessary, by projects (by configuring access rights on the server side in the MQTT broker)

Installation

pip install aethermagic

Example

To launch a task on master-server / separate process:

from aethermagic import AetherTask

async def complete(ae, success, output_data):
  print('complete')

async def status(ae, complete, success, progress, output_data):
  print('status')

input_data = {}
await AetherTask(None, 'worker', 'collect', on_complete=complete, on_status=status).perform(input_data)

Variables and values:

• complete True / False
• success True / False
• progress 0...100
• input_data user-defined data to serialize into JSON
• output_data user-defined data unserialized from JSON

To perform task on worker-server / separate process:

from aethermagic import AetherTask


async def perform(ae, input_data):
  print('perform')

  await ae.status(100) # Optional

  output_data = {}
  success = True
  await ae.complete(success, output_data)
  

await AetherTask(None, 'worker', 'collect', on_perform=perform).idle()

Variables and values:

• input_data user-defined data to serialize into JSON
• output_data user-defined data unserialized from JSON

AetherMagic requires running or joining an existing async loop:

For example, in simple python app you can do it with the following code:

import threading
import asyncio
from aethermagic import AetherMagic

def startloop(self, args=[None]) -> None:

  async def starttask() -> None:

    aem = AetherMagic(server=settings.MQTT_BROKER, port=settings.MQTT_PORT, ssl=True, user=settings.MQTT_USER, password=settings.MQTT_PASSWORD, union=settings.AETHER_UNION)

    async with asyncio.TaskGroup() as group:
      group.create_task(aem.main())
      #group.create_task(your_loop.main()) # Optional: You can create your own async loop

  asyncio.run(starttask())

thread = threading.Thread(target=startloop, args=[None])
thread.start()
thread.join() # Will wait for thread execution to complete ==> never