servicex_did_demo

Demo the ServiceX DID Library

Usage

This is a demo DID finder for the ServiceX project. It can be run in ServiceX and if given an appropriate dataset name, it will return a fixed set of data files to the system.

It is meant to demo usage of the ServiceX_DID library, and be used as a template to build new ServiceX DID finders. You'll need to add a deployment.yaml to the ServiceX chart in order to get this to work. Please see other did_finder deployment.yaml files and pattern it off this one.

Testing Demo in ServiceX

To test this in ServiceX perform the following steps:

1. Start a servicex instance with the demo did finder running
2. Launch the sample.simple_query.ipynb in a notebook server. If you install all development packages in the toml file, you'll have everything you need.
3. Run the sample. On a home internet, the sample takes about 20 seconds to complete.

Creating a new ServiceX DID Finder

To see how this is created see the following files in this repository:

• src/demo.did.py - Contains the code that returns a single file if the proper dataset name is queried.
• Dockerfile - Builds the container that can run in the ServiceX environment.
• requirements.txt - Contains all the packages required to run the did finder.

Test locally with KinD

• Install kind locally https://kind.sigs.k8s.io/
• Launch the cluster with make createcluster
• Build the Service Demo container with make build
• Make it available inside the KinD cluster with make load
• Install ServiceX via Helm with make servicex
• Create the Service Demo deployment with make demo
• Edit the servicex configuration with make edit and replace cernopendata with demo in DID_FINDER_DEFAULT_SCHEME and VALID_DID_SCHEMES
• Delete the servicex and the codegen pods so that they are re-created with the new configuration
• Setup forwarding of port 5000 locally with make forward &
• Test with make test, you should get a request id back similar to {'request_id': '5847d172-1681-411f-8913-5a1d57aac558'}