Running services locally

Services can be operated locally (e.g. for testing or ad-hoc data processing). You can:

Run your service once (i.e. run one analysis):
Via the octue twined CLI
By using the octue library in a python script
Start your service as a child, allowing it to answer any number of questions from any other Twined service:
Via the CLI

Running a service once

Via the CLI

Ensure you've created a valid octue.yaml file for your service

Run:

octue twined question ask local --input-values='{"some": "input"}'

The output values and/or manifest will be printed to stdout but are also stored in the event store.

Via a python script

Imagine we have a simple app that calculates the area of a square. It could be run locally on a given height and width like this:

from octue.twined.runner import Runner

runner = Runner(app_src="path/to/app.py", twine="path/to/twine.json")
analysis = runner.run(input_values={"height": 5, "width": 10})

analysis.output_values
>>> {"area": 50}

analysis.output_manifest
>>> None

See the Runner API documentation for more advanced usage including providing configuration, children, and an input manifest.

Starting a service as a child

Via the CLI

Ensure you've created a valid octue.yaml file for your service
Run:
```
octue twined service start
```

This will run the service as a child waiting for questions until you press Ctrl + C or an error is encountered. The service will be available to be questioned by other services at the service ID organisation/name as specified in the octue.yaml file.

Tip

You can use the --timeout option to stop the service after a given number of seconds.