Add github checks

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @fk3

.github/Check-SemilinearHistory.ps1

@@ -0,0 +1,28 @@
+Param(
+    [Parameter(Mandatory)]
+    [string]$targetBranch,
+    [Parameter(Mandatory)]
+    [string]$sourceBranch
+)
+
+$ErrorActionPreference = 'Stop'
+
+git fetch origin $targetBranch
+$commitTarget = git rev-parse "origin/$targetBranch"
+git fetch origin $sourceBranch
+$commitSource = git rev-parse "origin/$sourceBranch"
+
+# verify that source branch originates from the latest commit of the target branch
+# (i.e. a fast-forward merge could be performed)
+git merge-base --is-ancestor $commitTarget $commitSource
+if ($LASTEXITCODE -ne "0")
+{
+   throw "Merge would create a non-semilinear history. Please rebase."
+}
+
+# the target branch should only contain simple commits and no merges
+$numberOfMergeCommits = git rev-list --min-parents=2 --count "${commitTarget}..${commitSource}"
+if ($numberOfMergeCommits -ne "0")
+{
+    Throw "Source Branch contains non-linear history. Please rebase."
+}

.github/check_version_uniqueness.py

@@ -0,0 +1,34 @@
+"""Make sure that the version number has been increased and does not exist on PyPI yet."""
+
+import importlib.metadata
+import subprocess
+
+lib = "interface-proxy"
+
+lib_version = importlib.metadata.version(lib)
+
+not_found = False
+
+try:
+    subprocess.check_call(
+        [  # noqa: S603, S607
+            "python",
+            "-m",
+            "pip",
+            "install",
+            "--no-deps",
+            "--ignore-installed",
+            "--dry-run",
+            f"{lib}=={lib_version}",
+        ],
+    )
+except subprocess.SubprocessError:
+    not_found = True
+
+if not_found is False:
+    exc_msg = (
+        f"Version {lib_version} seems to be published already. "
+        f"Did you forget to increase the version number in interface_proxy/__init__.py?"
+    )
+    print(f"::error::{exc_msg}")  # noqa: T201
+    raise ValueError(exc_msg)

.github/workflows/check_version.yml

@@ -0,0 +1,26 @@
+name: Check Version
+
+on: 
+  pull_request:
+    branches: main
+
+permissions:
+  contents: read
+
+jobs:
+  check_version:
+    name: Check Version
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.9"
+    - name: Install environment
+      run: |
+        python -m pip install --upgrade pip
+        pip install --no-deps .
+    - name: Run version check
+      run: |
+        python .github/check_version_uniqueness.py

.github/workflows/publish.yml

@@ -0,0 +1,70 @@
+name: Publish
+
+on: 
+  workflow_dispatch:
+    inputs:
+      targetenv:
+        description: 'Target Environment'
+        required: true
+        default: 'testpypi'
+        type: choice
+        options:
+        - testpypi
+        - pypi
+
+permissions:
+  contents: write
+
+jobs:
+  overview:
+    name: Overview
+    runs-on: ubuntu-latest
+    steps:
+      - name: Job Summary
+        run: |
+          if [[ "${{ github.ref_name }}" != "main" && "${{ inputs.targetenv || 'testpypi' }}" == "pypi" ]]
+          then
+          {
+              echo "::error::Publishing to PyPI is only allowed from the main branch";
+              exit 1;
+          }
+          fi;
+          echo "### Job Summary" >> $GITHUB_STEP_SUMMARY
+          echo "Publish to ${{ inputs.targetenv || 'testpypi' }} environment from ${{ github.ref_name }} branch." >> $GITHUB_STEP_SUMMARY
+  publish:
+    name: Publish
+    runs-on: windows-2022
+    needs: overview
+    environment: ${{ inputs.targetenv || 'testpypi' }}
+    env:
+      TWINE_USERNAME: '__token__'
+      TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.9"
+    - name: Install build tools
+      run: |
+        python -m pip install --upgrade pip
+        pip install build~=1.0.3 twine~=4.0.2
+    - name: Build 
+      run: |
+        python -m build --wheel
+    - name: Publish distribution
+      run: |
+        twine upload --repository-url ${{ vars.PYPI_API_ENDPOINT }} dist/*
+    - name: Tag commit
+      if: ${{ (github.ref_name == 'main') || ((inputs.targetenv || 'testpypi') == 'pypi') }}
+      run: |
+        pip install --no-index --no-deps --find-links=dist/ interface-proxy
+        $LibVersion = python -c "import importlib.metadata; print(importlib.metadata.version('interface-proxy'))"
+        if ( -not (Get-ChildItem -Path dist -Filter "*${$LibVersion}*.whl"))
+        {
+          Throw "Inspected version $LibVersion could not be found in any wheels in the dist folder."
+        }
+        $TagName = "Release-${$LibVersion}_(${{ inputs.targetenv || 'testpypi' }})"
+        git tag $TagName
+        git push origin $TagName
+      shell: pwsh

.github/workflows/semilinear_history.yml

@@ -0,0 +1,19 @@
+name: Check Semilinear History
+
+on: 
+  pull_request:
+    branches: main
+
+permissions:
+  contents: read
+
+jobs:
+  semilinear_history:
+    name: Check Semilinear History
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Check Semilinear History
+      shell: pwsh
+      run: |
+        .\.github\Check-SemilinearHistory.ps1 -targetBranch ${{ github.base_ref }} -sourceBranch ${{ github.head_ref }}

.github/workflows/tox.yml

@@ -0,0 +1,27 @@
+name: Run Checks
+
+on: 
+  pull_request:
+    branches: main
+
+permissions:
+  contents: read
+
+jobs:
+  checks:
+    name: Run Checks
+    runs-on: windows-2022
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.9"
+    - name: Install tox
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox~=4.12.1
+    - name: Run tox
+      run: |
+        tox run-parallel