🔧 Devops: Add CD GitHub Action

.github/workflows/cd.yml

@@ -0,0 +1,46 @@
+name: cd
+
+on:
+    push:
+        tags:
+        -   'v[0-9]+.[0-9]+.[0-9]+*'
+
+jobs:
+
+    validate-release-tag:
+
+        if: github.repository == 'aiidateam/aiida-submission-controller'
+        runs-on: ubuntu-latest
+
+        steps:
+        -   name: Checkout source
+            uses: actions/checkout@v2
+
+        -   name: Set up Python 3.11
+            uses: actions/setup-python@v2
+            with:
+                python-version: '3.11'
+
+        -   name: Validate the tag version against the package version
+            run: python .github/workflows/validate_release_tag.py $GITHUB_REF
+
+    publish:
+
+        name: Publish to PyPI
+        needs: [validate-release-tag]
+        runs-on: ubuntu-latest
+
+        steps:
+        -   name: Checkout source
+            uses: actions/checkout@v2
+
+        -   name: Set up Python 3.11
+            uses: actions/setup-python@v2
+            with:
+                python-version: '3.11'
+
+        -   name: Install flit
+            run: pip install flit~=3.8
+
+        -   name: Build and publish
+            run: flit publish

.github/workflows/validate_release_tag.py

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+# -*- coding: utf-8 -*-
+"""Validate that the version in the tag label matches the version of the package."""
+import argparse
+import ast
+from pathlib import Path
+
+
+def get_version_from_module(content: str) -> str:
+    """Get the ``__version__`` attribute from a module.
+
+    .. note:: This has been adapted from :mod:`setuptools.config`.
+    """
+    try:
+        module = ast.parse(content)
+    except SyntaxError as exception:
+        raise OSError("Unable to parse module.") from exception
+
+    try:
+        return next(
+            ast.literal_eval(statement.value)
+            for statement in module.body
+            if isinstance(statement, ast.Assign)
+            for target in statement.targets
+            if isinstance(target, ast.Name) and target.id == "__version__"
+        )
+    except StopIteration as exception:
+        raise OSError("Unable to find the `__version__` attribute in the module.") from exception
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("GITHUB_REF", help="The GITHUB_REF environmental variable")
+    args = parser.parse_args()
+    assert args.GITHUB_REF.startswith("refs/tags/v"), f'GITHUB_REF should start with "refs/tags/v": {args.GITHUB_REF}'
+    tag_version = args.GITHUB_REF[11:]
+    package_version = get_version_from_module(
+        Path("aiida_submission_controller/__init__.py").read_text(encoding="utf-8")
+    )
+    error_message = f"The tag version `{tag_version}` is different from the package version `{package_version}`"
+    assert tag_version == package_version, error_message