Add Release workflow (#80)

* add pep 517 build

* add release workflow

* add step to publish to pypi

* add some comments to the release action

* Limit who can run the release action

.github/workflows/release.yaml

@@ -0,0 +1,103 @@
+name: Release to pypi
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to use. Leave default to use the current version'
+        required: true
+        default: '~~version~~'
+
+
+env:
+  # comment TWINE_REPOSITORY_URL to use the real pypi. NOTE: change also the secret used in TWINE_PASSWORD
+  # TWINE_REPOSITORY_URL: https://test.pypi.org/legacy/
+
+jobs:
+  release:
+    name: Release
+    if: github.actor == 'CaselIT' || github.actor == 'zzzeek'
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Set up python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.9"
+
+      - name: Set version
+        # A specific version was set in the action trigger.
+        # Change the version in setup.cfg to that version
+        if: ${{ github.event.inputs.version != '~~version~~' }}
+        run: |
+          python .github/workflows/scripts/update_version.py --set-version ${{ github.event.inputs.version }}
+
+      - name: Commit version change
+        # If the setup.cfg version was changed commit it.
+        if: ${{ github.event.inputs.version != '~~version~~' }}
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Version ${{ github.event.inputs.version }}
+          file_pattern: setup.cfg
+
+      - name: Get version
+        # Get current version
+        id: get-version
+        run: |
+          version=`grep 'version =' setup.cfg | awk '{print $NF}'`
+          echo $version
+          echo "::set-output name=version::$version"
+
+      - name: Create distribution
+        # Create wheel and sdist
+        run: |
+          python -m pip install --upgrade pip
+          pip --version
+          pip install build
+          pip list
+          python -m build --sdist --wheel .
+
+      - name: Create release
+        # Create github tag and release and upload the distribution wheels and sdist
+        uses: softprops/action-gh-release@v1
+        with:
+          body: Release ${{ steps.get-version.outputs.version }}
+          files: dist/*
+          name: 'v${{ steps.get-version.outputs.version }}'
+          tag_name: v${{ steps.get-version.outputs.version }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Next version
+        # Update the version to the next version
+        run: |
+          python .github/workflows/scripts/update_version.py --update-version
+
+      - name: Get version
+        # Get new current version
+        id: get-new-version
+        run: |
+          version=`grep 'version =' setup.cfg | awk '{print $NF}'`
+          echo $version
+          echo "::set-output name=version::$version"
+
+      - name: Commit next version update
+        # Commit new current version
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Start work on ${{ steps.get-new-version.outputs.version }}
+          file_pattern: setup.cfg
+
+      - name: Publish distribution
+        # Publish to pypi
+        env:
+          TWINE_USERNAME: __token__
+          # replace TWINE_PASSWORD with token for real pypi
+          # TWINE_PASSWORD: ${{ secrets.test_pypi_token }}
+          TWINE_PASSWORD: ${{ secrets.pypi_token }}
+        run: |
+          pip install -U twine
+          twine upload --skip-existing dist/*

.github/workflows/scripts/update_version.py

@@ -0,0 +1,82 @@
+import argparse
+import pathlib
+import re
+
+
+def is_canonical(version):
+    # from https://www.python.org/dev/peps/pep-0440/
+    return (
+        re.match(
+            r"^([1-9][0-9]*!)?(0|[1-9][0-9]*)(\.(0|[1-9][0-9]*))*((a|b|rc)(0|"
+            r"[1-9][0-9]*))?(\.post(0|[1-9][0-9]*))?(\.dev(0|[1-9][0-9]*))?$",
+            version,
+        )
+        is not None
+    )
+
+
+def next_version(current_version: str):
+    major, minor, point = current_version.split(".")
+    if point.isdecimal():
+        # 1.2.3 -> 1.2.4
+        next = int(point) + 1
+        return f"{major}.{minor}.{next}"
+    if not point[-1].isdecimal():
+        # 0.1.2b -> 0.1.2b1
+        return f"{major}.{minor}.{point}1"
+    # 0.1.2b1 -> 0.1.2b2
+    match = re.match(r"(\d+\D*)(\d+)", point)
+    if not match:
+        raise RuntimeError(
+            f"Cannot decode the current version {current_version}"
+        )
+    base, current = match.groups()
+    print(base, current)
+    next = int(current) + 1
+    new_point = f"{base}{next}"
+    return f"{major}.{minor}.{new_point}"
+
+
+def go(args):
+    if args.set_version and not is_canonical(args.set_version):
+        raise RuntimeError(f"Cannot use {args.set_version!r} as version")
+
+    setup = pathlib.Path("setup.cfg")
+    setup_text = setup.read_text()
+    new_setup_text = []
+    found = False
+    for line in setup_text.split("\n"):
+        if not line.startswith("version = "):
+            new_setup_text.append(line)
+            continue
+        if found:
+            raise RuntimeError(
+                "Multiple lines starting with 'version =' found"
+            )
+        if args.set_version:
+            new_setup_text.append(f"version = {args.set_version}")
+            version = args.set_version
+        else:
+            current_version = line.split(" ")[-1]
+            version = next_version(current_version)
+            new_setup_text.append(f"version = {version}")
+        found = True
+    if not found:
+        raise RuntimeError("No line found starting with 'version ='")
+
+    setup.write_text("\n".join(new_setup_text))
+    print("Updated version to", version)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument("--set-version", help="Version to set")
+    group.add_argument(
+        "--update-version",
+        help="Take the current version and update it",
+        action="store_true",
+    )
+
+    args = parser.parse_args()
+    go(args)

.gitignore

@@ -5,6 +5,6 @@
 .vscode/
 dist/
 *.egg-info
-
+build/
 
 sqla

pyproject.toml

@@ -1,3 +1,7 @@
+[build-system]
+requires = ['setuptools >= 44', 'wheel']
+build-backend = 'setuptools.build_meta'
+
 [tool.black]
 line-length = 79
 target-version = ['py36']