Add UWS support to FastAPI Safir app template

Add a new configuration option for the FastAPI Safir app project
template that allows the user to indicate whether they are building
a UWS app with a separate backend and a queuing system (defaulting
to no). If that option is enabled, add in the machinery for a UWS
application, including stub models and a stub worker function.

This template uncovered a Ruff diagnostic for unused class method
parameters that would fire on the initial application as generated
from the template. Add an ignore rule for that diagnostic for the
same reason as the similar diagnostic for unused method arguments.

project_templates/fastapi_safir_app/SConscript

@@ -6,3 +6,14 @@ from templatekit.builder import cookiecutter_project_builder
 env = Environment(BUILDERS={'Cookiecutter': cookiecutter_project_builder})
 env.Cookiecutter(AlwaysBuild(Dir('example')),
                  'cookiecutter.json')
+
+# Run cookiecutter to generate the 'example-uws' package
+# This represents an IVOA UWS service that does work via an arq queue
+# The explicit target directory, with AlwaysBuild, is needed for Scons to
+# differentiate this build from the example build above. We can't use Scons'
+# default build caching because we'd have to compute the cookiecutter
+# template anyways.
+env.Cookiecutter(AlwaysBuild(Dir('example-uws')),
+                 'cookiecutter.json',
+                 cookiecutter_context={'name': 'example-uws',
+                                       'uws_service': 'True'})

project_templates/fastapi_safir_app/cookiecutter.json

@@ -16,6 +16,7 @@
     "lsst-dm",
     "lsst-sqre-testing"
   ],
+  "uws_service": ["False", "True"],
   "uses_helm": ["True", "False"],
   "_extensions": ["jinja2_time.TimeExtension", "templatekit.TemplatekitExtension"]
 }

project_templates/fastapi_safir_app/example-uws/.dockerignore

@@ -0,0 +1,142 @@
+# VSCode
+.vscode/
+
+# Everything below this point is a copy of .gitignore.
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# macOS
+.DS_Store

project_templates/fastapi_safir_app/example-uws/.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"

project_templates/fastapi_safir_app/example-uws/.github/workflows/ci.yaml

@@ -0,0 +1,87 @@
+name: CI
+
+env:
+  # Current supported Python version. For applications, there is generally no
+  # reason to support multiple Python versions, so all actions are run with
+  # this version. Quote the version to avoid interpretation as a floating
+  # point number.
+  PYTHON_VERSION: "3.12"
+
+"on":
+  merge_group: {}
+  pull_request: {}
+  push:
+    branches-ignore:
+      # These should always correspond to pull requests, so ignore them for
+      # the push trigger and let them be triggered by the pull_request
+      # trigger, avoiding running the workflow twice.  This is a minor
+      # optimization so there's no need to ensure this is comprehensive.
+      - "dependabot/**"
+      - "gh-readonly-queue/**"
+      - "renovate/**"
+      - "tickets/**"
+      - "u/**"
+    tags:
+      - "*"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Run pre-commit
+        uses: pre-commit/[email protected]
+
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run tox
+        uses: lsst-sqre/run-tox@v1
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          tox-envs: "py,coverage-report,typing"
+          tox-requirements: requirements/tox.txt
+
+  build:
+    runs-on: ubuntu-latest
+    needs: [lint, test]
+    timeout-minutes: 10
+
+    # Only do Docker builds of tagged releases and pull requests from ticket
+    # branches.  This will still trigger on pull requests from untrusted
+    # repositories whose branch names match our tickets/* branch convention,
+    # but in this case the build will fail with an error since the secret
+    # won't be set.
+    if: >
+      github.event_name != 'merge_group'
+      && (startsWith(github.ref, 'refs/tags/')
+          || startsWith(github.head_ref, 'tickets/'))
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: lsst-sqre/build-and-push-to-ghcr@v1
+        id: build
+        with:
+          image: ${{ github.repository }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: lsst-sqre/build-and-push-to-ghcr@v1
+        id: build-worker
+        with:
+          image: ${{ github.repository }}-worker
+          github_token: ${{ secrets.GITHUB_TOKEN }}

project_templates/fastapi_safir_app/example-uws/.github/workflows/periodic-ci.yaml

@@ -0,0 +1,57 @@
+# This is a separate run of the Python test suite that runs from a schedule,
+# doesn't cache the tox environment, and updates pinned dependencies first.
+# The purpose is to test compatibility with the latest versions of
+# dependencies.
+
+name: Periodic CI
+
+env:
+  # Current supported Python version. For applications, there is generally no
+  # reason to support multiple Python versions, so all actions are run with
+  # this version. Quote the version to avoid interpretation as a floating
+  # point number.
+  PYTHON_VERSION: "3.12"
+
+"on":
+  schedule:
+    - cron: "0 12 * * 1"
+  workflow_dispatch: {}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Update dependencies
+        run: |
+          pip install --upgrade uv
+          uv venv
+          source .venv/bin/activate
+          make update-deps
+        shell: bash
+
+      - name: Run tests in tox
+        uses: lsst-sqre/run-tox@v1
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          tox-envs: "lint,typing,py"
+          tox-requirements: requirements/tox.txt
+          use-cache: false
+
+      - name: Report status
+        if: failure()
+        uses: ravsamhq/notify-slack-action@v2
+        with:
+          status: ${{ job.status }}
+          notify_when: "failure"
+          notification_title: "Periodic test for {repo} failed"
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_ALERT_WEBHOOK }}