servicex-local 1.2.0

Enables a local backend for ServiceX

ServiceX-Local

A drop in to enable local running of the ServiceX codegen and science images. This is mostly geared toward running for debugging and testing.

Installation

Install this as a library in your virtual environment with:

• pip install servicex-local for all the Docker based codegen and science container access.
• pip install servicex-local[xAOD] to get a local xAOD code generator (and the required dependencies) along with the docker based code.

Some science images requires a x509 certificate to run. You'll need to get the x509up into your /tmp area. If you don't have the tools installed locally, do the following:

1. Make sure in your ~/.globus directory (on whatever OS you are no) contains the usercert.pem and userkey.pem files
2. Use the voms_proxy_init to initialize against the atlas voms.

The science image code will pick up the location of the 509 cert.

Usage

Certificates

This will do its best to track x509 certs. If a file called x509up is located in your temp directory (including on windows), that will be copied into the docker image or other places to be used.

Example Code

This text is a DRAFT

To use this, example code is as follows:

    codegen = LocalXAOD()
    science_runner = ScienceWSL2("atlas_al9", "22.2.107")
    adaptor = SXLocalAdaptor(codegen, science_runner)

    # The simple query, take straight from the example in the documentation.
    query = q.FuncADL_ATLASr22()  # type: ignore
    jets_per_event = query.Select(lambda e: e.Jets("AnalysisJets"))
    jet_info_per_event = jets_per_event.Select(
        lambda jets: {
            "pt": jets.Select(lambda j: j.pt()),
            "eta": jets.Select(lambda j: j.eta()),
        }
    )

    spec = {
        "Sample": [
            {
                "Name": "func_adl_xAOD_simple",
                "Dataset": dataset.FileList(
                    [
                        "tests/test.root",  # noqa: E501
                    ]
                ),
                "Query": jet_info_per_event,
            }
        ]
    }
    files = deliver(spec, servicex_name="servicex-uc-af", sx_adaptor=adaptor)
    assert files is not None, "No files returned from deliver! Internal error"

Running tests

If you are on a machine with wsl2 and or docker you can run the complete set of tests with flags:

pytest --wsl2 --docker

Acknowledgments

This docker versions of this code are thanks to @ketan96-m's work on this Service MR.