Feature/download from eumds for url adaptor

[ecmwf-cobarzan]

No description provided.

[Copilot]

Pull request overview

This PR adds a pluggable “download interface” layer to the URL adaptor so it can download either via the existing multi-URL downloader or via EUMETSAT Data Store (EUMDAC), with EUMDAC downloads post-processed to extract NetCDF files from zip bundles.

Changes:

• Introduces DownloadInterfaceType with MultiUrlDownloadInterface and EumdacDownloadInterface, plus a get_download_interface(...) factory.
• Refactors UrlCdsAdaptor.retrieve_list_of_results() to delegate downloading + post-processing to the selected interface (download_interface_type, default multiurl).
• Adds unit tests for the interface factory and EUMDAC NetCDF-only zip extraction behavior.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
tests/test_50_url_adaptor.py	Adds tests for download interface selection and EUMDAC post-processing of zip bundles.
cads_adaptors/adaptors/url/download_interface_type.py	Adds the new download interface abstraction with MultiURL + EUMDAC implementations and a factory.
cads_adaptors/adaptors/url/__init__.py	Switches UrlCdsAdaptor to use the new download interface abstraction during retrieval.

Comments suppressed due to low confidence (1)

cads_adaptors/adaptors/url/init.py:57

• retrieve_list_of_results now delegates to download_interface_type (including auth decryption via prepare_credentials() and post_process() behavior), but there’s no test covering that UrlCdsAdaptor selects the correct interface and preserves the previous try_download behavior for the default case. Add a test that monkeypatches get_download_interface (or url_tools.try_download) to assert the correct calls/kwargs for the default multiurl path and for the eumdac path.

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[EddyCMWF]

Approved with option to add per-dataset configurable credentials, and passing the e2e tests

EDIT: Just saw your comment re a single account, so ignore the option suggested above.

[ecmwf-cobarzan]

All cads-e2e-tests passed wrt the URL adaptor.