Convert to Wobby and the new Safir UWS library

Remove the direct database connection and convert to the new Safir
UWS library and the Wobbly backend for job storage. Remove the
command-line tool, since its only purpose was to manage the database
schema. Simplify the application startup now that schema creation is
not required.

Change the dependencies to return the full cutout model, now that
Safir supports this. Move the parsing from strings into a helper
function used by the dependencies, since the cutout model no longer
has to be aware of the SODA input parameters.

Move the `MultiValuedParameterError` exception here from Safir, since
that error code is SODA-specific.

Dockerfile

@@ -52,16 +52,6 @@ RUN useradd --create-home appuser
 # Copy the virtualenv
 COPY --from=install-image /opt/venv /opt/venv
 
-# Copy the Alembic configuration and migrations, and set that path as the
-# working directory so that Alembic can be run with a simple entry command
-# and no extra configuration.
-COPY --from=install-image /workdir/alembic.ini /app/alembic.ini
-COPY --from=install-image /workdir/alembic /app/alembic
-WORKDIR /app
-
-# Copy the startup script
-COPY scripts/start-frontend.sh /start-frontend.sh
-
 # Make sure we use the virtualenv
 ENV PATH="/opt/venv/bin:$PATH"
 
@@ -72,4 +62,4 @@ USER appuser
 EXPOSE 8080
 
 # Run the application.
-CMD ["/start-frontend.sh"]
+CMD ["uvicorn", "vocutouts.main:app", "--host", "0.0.0.0", "--port", "8080"]

changelog.d/20241210_140315_rra_DM_47986.md

@@ -0,0 +1,11 @@
+### Backwards-incompatible changes
+
+- Switch to Wobbly for job storage. All previous job history will be lost unless the vo-cutouts database is converted into Wobbly's storage format and inserted into Wobbly's database.
+
+### Bug fixes
+
+- Append a colon after the error code when reporting UWS errors.
+
+### Other changes
+
+- Render all UWS XML output except for error VOTables using vo-models rather than hand-written XML templates.

pyproject.toml

@@ -21,26 +21,17 @@ classifiers = [
 # be able to install vo-cutouts there so that we can use supporting code.
 requires-python = ">=3.11"
 dependencies = [
-    # FastAPI including some optional features
-    "fastapi",
-    "python-multipart",
-    "uvicorn[standard]",
-    # Other dependencies.
-    "alembic[tz]",
     "astropy",
     "click",
+    "fastapi",
     "pydantic>2",
     "pydantic-settings",
-    "safir[db,uws] @ git+https://github.com/lsst-sqre/safir@main#subdirectory=safir",
+    "safir[uws]>=9.0.1",
     "structlog",
+    "uvicorn[standard]",
 ]
-
-
 dynamic = ["version"]
 
-[project.scripts]
-vo-cutouts = "vocutouts.cli:main"
-
 [project.urls]
 Homepage = "https://github.com/lsst-sqre/vo-cutouts"
 Source = "https://github.com/lsst-sqre/vo-cutouts"
@@ -79,10 +70,7 @@ disallow_untyped_defs = true
 disallow_incomplete_defs = true
 ignore_missing_imports = true
 local_partial_types = true
-plugins = [
-    "pydantic.mypy",
-    "sqlalchemy.ext.mypy.plugin",
-]
+plugins = ["pydantic.mypy"]
 no_implicit_reexport = true
 show_error_codes = true
 strict_equality = true

requirements/dev.txt

@@ -144,7 +144,7 @@ click-log==0.4.0 \
     --hash=sha256:3970f8570ac54491237bcdb3d8ab5e3eef6c057df29f8c3d1151a51a9c23b975 \
     --hash=sha256:a43e394b528d52112af599f2fc9e4b7cf3c15f94e53581f74fa6867e68c91756
     # via scriv
-colorama==0.4.6 ; sys_platform == 'win32' or platform_system == 'Windows' \
+colorama==0.4.6 ; platform_system == 'Windows' or sys_platform == 'win32' \
     --hash=sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44 \
     --hash=sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6
     # via