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CONTRIBUTING.md

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MaRDA Metadata Extractors: Registry

Contributing guidelines

Contributions to this registry are welcome. We pledge to follow the Contributor Covenant Code of Conduct.

You can contribute FileType and Extractor entries to this registry by creating pull requests (PRs), which should include YAML files under ./data/filetypes and ./data/extractors, respectively. These YAML files must follow the schemas at marda-alliance/metadata_extractors_schema (see the online documentation for more details).

An example of the process can be seen in this pull request. The workflow steps are as follows:

Opening a pull request

  • One pull request (PR) per Extractor, please.
    • You can include multiple versions of one Extractor in separate .yml files.
    • Do not include multiple unrelated Extractors in a single PR.
  • Include any missing FileTypes supported by the Extractor in the same PR.
  • Please add the appropriate labels (Extractor and FileType).

Example files

  • If you are adding new FileTypes in this PR, add example files of those FileTypes using git-lfs into marda_registry/data/lfs. Do not commit example files into the repository directly. For example, to add a new file called xmpl.tpe (corresponding to the FileType with ID example-type) you would:

      mkdir marda_registry/data/lfs/example-type  # create the dir using FileType ID
  cp xmpl.tpe marda_registry/data/lfs/example-type  # copy the example file
  git lfs install  # setup git-lfs, only necessary if you haven't used git-lfs before
  git add marda_registry/data/lfs/example-type/*  # track files
  ...
  git lfs ls-files  # check that your new example files are tracked before committing
  git commit
  git push

Validation of Definitions

  • Your PR will have to pass the testing using our continuous integration (CI) set-up. The CI checks the following three things:

    • lint, making sure the yml files you added are properly formatted,
    • validate, which validates the yml files against their schemas, and
    • build, which makes sure the new registry website can be built.

    Therefore, it is mainly the lint and validate actions you will have to pay attention to. In case anything is unclear or you cannot find the error, ping one of the Registry Maintainers.

  • You can of course validate your definitions locally, by using the Schema package, see the Usage section of the documentation.

Testing of Extraction

  • You should check that your yml definitions can be used to install the Extractor and and extract any example files from the supported FileTypes locally, by using our Schema package, see the Installation and Usage sections.

At the moment, the above CI is not checking whether the extraction of the example files actually works. See this issue for further details.

Approval and Deployment

  • If you are a first-time contributor to the project, we will need to pre-approve your PR so that the CI can be run. Ping one of the Registry Maintainers.
  • Once the CI passes, and all issues that are raised during the review are addressed, your PR can be merged.
  • Once your PR is merged into the Registry, your new definitions should be available at the Registry Website. Cheers!