DAQ Config Server

A service to read files on Diamond's filesystem from a BlueAPI container. Currently this service is only able to read files on /dls_sw/. Writing to configuration files will come in a future release.

Source	https://github.com/DiamondLightSource/daq-config-server
Docker	docker run ghcr.io/DiamondLightSource/daq-config-server:latest
Releases	https://github.com/DiamondLightSource/daq-config-server/releases
Documentation	https://DiamondLightSource.github.io/daq-config-server

Here is a minimal example to read a file from the centrally hosted service after installing this package

from daq_config_server.client import ConfigClient

config_client = ConfigClient("https://daq-config.diamond.ac.uk")

file_contents = config_client.get_file_contents({ABSOLUTE_PATH_TO_CONFIG_FILE}, desired_return_type=str)

The output will come out as a raw string - you should format it as required in your own code. You may also request that the file contents is returned as a dict or in bytes - this will raise an http exception if the file cannot be converted to that type. To be able to read a file, you must first add it to the whitelist.

Testing

To run unit tests, type tox -e unit_tests from within the dev container

There is a convenient script in ./deployment/build_and_push.sh which can be used to easily build and run the container locally for testing, and optionally push the container to a repository. In general we should rely on the CI to be pushing new containers - however it is sometimes useful to push a development image to a private repo for development or debugging.

To run local system tests, start a local container by running ./deployment/build_and_push.sh -r -b. Then, in the dev container, forward port 8555. There are instructions on port forwarding within vscode here. Next, in a terminal in the devcontainer, run tox -e system_tests_local from the daq-config-server directory.

To run a test deployment on argus, log in to argus in your namespace and run:

helm install daq-config ./helmchart/ --values dev-values.yaml

followed by:

kubectl port-forward service/daq-config-server-svc 8555

after which you should be able to access the API on http://localhost:8555/docs

See https://DiamondLightSource.github.io/daq-config-server for more detailed documentation.