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Developer documentation

This page provides the following documentation for developers of the Risk Data Library Standard:

How-to guides

This section contains the following how-to guides:

Propose changes

Before completing the steps below, you first need to set up a local development environment so that you can resolve build errors and test failures before pushing your changes to GitHub. Alternatively, if your change is simple, you can use the GitHub web editor and skip the running the pre-commit script, running the tests and building the documentation locally.

  1. Agree on a proposal in a GitHub issue.
  2. Create a branch from the dev branch.
  3. Make your changes. Do not use normative keywords in non-normative content. For more information, see normative and non-normative content in RDLS.
  4. Run the pre-commit script (./manage.py pre-commit) to update reference documentation and format markdown files.
  5. Run the tests (pytest) and resolve any errors.
  6. Build the documentation, resolve any errors and preview your changes locally.
  7. Commit your changes to your branch and push it to GitHub. Your changes are available for anyone to preview at [https://rdl-standard.readthedocs.io/en/{branch name}](https://rdl-standard.readthedocs.io/en/{branch name}).
  8. Create a pull request:
  • Set the base branch to dev.
  • Reference the issue number in the description.

Once the pull request is merged, the updated documentation is available to preview at https://rdl-standard.readthedocs.io/en/dev.

Set up a local development environment

Clone the repository

git clone git@github.com:GFDRR/rdl-standard.git
cd rdl-standard

Subsequent instructions assume that your current working directory is rdl-standard, unless otherwise stated.

Update submodules

git submodule init
git submodule update

Create and activate a Python virtual environment

The following instructions assume you have Python 3.8 or newer installed on your machine.

You can use either pyenv or python3-venv:

pyenv

  1. Install pyenv. The pyenv installer is recommended.

  2. Create a virtual environment.

    pyenv virtualenv rdl-standard

  3. Activate the virtual environment

    pyenv activate rdl-standard

  4. Set the local application-specific virtual environment. Once set, navigating to the rdl-standard directory will automatically activate the environment.

    pyenv local rdl-standard
python3-venv

If you are using Python 3.3 or newer, venv is included in the standard Python installation.

  1. Create a virtual environment called .ve. a. Linux/MacOS users

    python3 -m venv .ve

    a. Windows users

    py -m venv .ve

  2. Activate the virtual environment. You must run this command for each new terminal session. a. Linux/MacOS users

    source .ve/bin/activate

    b. Windows users

    .\.ve\Scripts\activate

Install requirements

pip install --upgrade pip setuptools
pip install -r requirements.txt

Install Flatten Tool:

pip install ./flatten-tool

Resolve check failures

mdformat

If this check fails, run the following command to fix markdown formatting:

mdformat docs

tests

If this check fails, review the output to identify which test failed:

test_json.py::test_empty

Review the warnings to identify the empty JSON files and remove the files.

test_json.py::test_indent

Run the following command to indent JSON files:

ocdskit indent -r .
test_json.py::test_invalid_json

Review the warnings to identify the invalid JSON files and correct the errors.

test_schema.py (all tests)

Review the warnings to identify and correct the errors. For more information on each test, see https://jscc.readthedocs.io/en/latest/api/testing/checks.html#module-jscc.testing.checks.

Build the documentation

Sphinx, which builds the documentation, doesn’t watch directories for changes. To regenerate the documentation, start an HTML server, and refresh the browser whenever changes are made, run:

cd docs
make autobuild

Alternatively, build the documentation and view it using a local web server:

cd docs
make html
python -m http.server --directory _readthedocs/html

Deploy changes

To deploy the dev branch to the live documentation site, create a pull request to merge the dev branch into the main branch. Once the pull request is merged, the changes are automatically deployed to the live site at https://rdl-standard.readthedocs.io/en/.

Release a new version

  1. Update the MAJOR.MINOR version in conf.py.
  2. Update the MAJOR.MINOR.PATCH version number in the following files:
  • docs/conf.py: update release
  • docs/reference/schema.md: update the canonical schema URL
  • schema/rdls_schema.json: update id and properties/links/prefixItems/properties/href/const
  • schema/rdls_package_schema.json: update id and properties/networks/items/$ref

  1. Update the version number and date in docs/about/changelog.md

  2. Create a tag. For example:

  git tag -a 0__2__0 -m '0.2.0 release'
  1. Push the tag:
  git push --follow-tags

Update requirements

  1. Install pip-tools. 
    pip install pip-tools
  2. Edit requirements.in.
  3. Update requirements.txt. 
    pip-compile
  4. Install requirements. 
    pip-sync requirements.txt
  5. Commit your changes.

Add an RDLS metadata example

  1. Author your example RDLS metadata in JSON format. You can use either a text editor or the RDLS spreadsheet template and Flatten Tool. Your example RDLS metadata must be wrapped in an outer datasets array, e.g.
{
  "datasets": [
    {
      "id": "1",
      "title": "My example RDLS metadata"
    }
  ]
}
  1. Save your example JSON file to examples/{component}/{title}/example.json where {component} is the risk data component the example relates to (hazard, exposure, loss or vulnerability) and {title} is the title of the example.
  2. Run ./manage.py pre-commit to create a CSV version of the example.
  3. Add Sphinx directives to the Markdown files in docs to render your example in the built documentation.

Style guides

Schema style guide

Field descriptions

Codelists

Use the following template, noting that any _ characters in the codelist title need to be replaced with the - character in the codelist URL:

The <semantics>, from the <open|closed> [<codelist_title> codelist](https://docs.riskdatalibrary.org/en/{{version}}/reference/codelists/#codelist-title).

Changelog style guide

  • Use the Keep a Changelog format.
  • Begin each entry with a link to the pull request for the change.

Normative content

Changelog entries should be descriptive:

  • Bad entry: Update schema.
  • Good entry: Make name required.

If changes are made to files under the schema directory, it is assumed that corresponding changes were made to files under the docs directory. Do not add an entry under the "Documentation" heading if the changes directly correspond to entries under the "Codelists" and/or "Schema" headings.

For changes to schema and codelists, preserve schema/codelist ordering when adding new changelog entries. Otherwise, to reduce merge conflicts, add new changelog entries to the end of the relevant bullet list.

Non-normative content

Changelog entries should be descriptive. Do not add an entry like "Improve primer." Instead, simply add the PR number to the "Primer" list item.

Reference

This section contains the following reference documentation:

GitHub repository

The project repository is hosted on GitHub.

Branches

The main branch is used to build the 'live' version of the standard documentation.

The dev branch is used to stage changes to the main branch.

Feature branches branch off the dev branch, with work merged into the dev branch before finally being merged into the main branch.

Branch protection rules are configured for the main and dev branches. The rules prevent commits being made directly by requiring pull requests before commits can be merged. They also require approvals and status checks to pass before merging.

Directory structure

  • .github/: Issue templates and GitHub Actions workflows
  • docs/:
    • *.md, */*.md: English documentation text
    • conf.py: Sphinx configuration
    • _static/: CSS and JavaScript for the documentation
    • _templates/: Jinja templates for the documentation
    • .tx/: Transifex configuration (not yet implemented)
    • img/: Images used in the documentation
    • locale/: Translations of the English documentation (not yet implemented)
  • examples: Example JSON files, CSV files and figures
  • schema/: schema- and codelist-related files
  • specs/: TBD
  • SteeringCommittee/: Minutes of steering committee meetings

The following files are created by running a build and are not version controlled:

  • .ve/: Python virtual environment (if using python3-venv)
  • docs/_readthedocs: Built HTML documentation

Sphinx

Sphinx is the documentation generator used to build the HTML documentation from Markdown source files. It uses the MyST - Markedly Structured Text - Parser to parse the Markdown source files.

Configuration

The Sphinx configuration for this project is based on the Open Data Services Sphinx Base and is defined in docs/conf.py. So that links within the schema work on branches, the configuration replaces {{version}} placeholders in schema/rdls_schema.json and copies the processed schema to docs/_readthedocs/html for inclusion in the built documentation.

Read the Docs

Read the Docs builds and hosts the standard documentation site.

Whenever a commit is pushed to a branch in the GitHub repository, Read the Docs automatically builds the version associated with the branch and hosts it at https://rdl-standard.readthedocs.io/en/.

Configuration

https://rdl-standard.readthedocs.io/en/latest redrirects to https://rdl-standard.readthedocs.io/en/main.

Automation rules are configured to:

  • Activate, build and hide a new version when a commit is pushed to a new branch in the GitHub repository.
  • Delete the associated version when a branch is deleted in the GitHub repository.

Pull request builds are also enabled.

Other than the main branch, all branches are hidden from the flyout menu.

Credentials

You can find credentials for Read the Docs in the Open Data Services password database.

manage.py

The standard repository includes a command-line utility for administrative tasks. For information on the available commands, run ./manage.py --help.