feat(): format & proper startup (make main async for uvicorn to inherit current asyncio event loop)

pyproject.toml

@@ -13,6 +13,7 @@ dependencies = [
     "argon2_cffi==23.1.0",
     "cryptography==46.0.3",
     "httpx==0.28.1",
+    "psycopg[binary]>=3.2.12",
 ]
 
 [dependency-groups]
@@ -37,7 +38,7 @@ tests = [
 dev = [
     { include-group = "tests" },
     { include-group = "linters" },
-    { include-group = "migrations"},
+    { include-group = "migrations" },
 ]
 
 [project.scripts]
@@ -61,17 +62,17 @@ exclude = [
     "src/template_project/migrations",
 ]
 enable_error_code = [
-  "truthy-bool",
-  "truthy-iterable",
-  "redundant-expr",
-  "unused-awaitable",
-  "ignore-without-code",
-  "possibly-undefined",
-  "redundant-self",
-  "explicit-override",
-  "mutable-override",
-  "unimported-reveal",
-  "deprecated",
+    "truthy-bool",
+    "truthy-iterable",
+    "redundant-expr",
+    "unused-awaitable",
+    "ignore-without-code",
+    "possibly-undefined",
+    "redundant-self",
+    "explicit-override",
+    "mutable-override",
+    "unimported-reveal",
+    "deprecated",
 ]
 
 [tool.ruff]
@@ -86,63 +87,63 @@ exclude = [
 
 [tool.ruff.lint]
 select = [
-  "A",    # flake8-builtins
-  "B",    # flake8-bugbear
-  "C4",   # flake8-comprehensions
-  "C90",  # maccabe
-  "COM",  # flake8-commas
-  "D",    # pydocstyle
-  "DTZ",  # flake8-datetimez
-  "E",    # pycodestyle
-  "ERA",  # flake8-eradicate
-  "EXE",  # flake8-executable
-  "F",    # pyflakes
-  "FA",   # flake8-future-annotations
-  "FBT",  # flake8-boolean-trap
-  "FLY",  # pyflint
-  "FURB", # refurb
-  "G",    # flake8-logging-format
-  "I",    # isort
-  "ICN",  # flake8-import-conventions
-  "ISC",  # flake8-implicit-str-concat
-  "LOG",  # flake8-logging
-  "N",    # pep8-naming
-  "PERF", # perflint
-  "PIE",  # flake8-pie
-  "PL",   # pylint
-  "PT",   # flake8-pytest-style
-  "PTH",  # flake8-use-pathlib
-  "Q",    # flake8-quotes
-  "RET",  # flake8-return
-  "RSE",  # flake8-raise
-  "RUF",  # ruff
-  "S",    # flake8-bandit
-  "SIM",  # flake8-simpify
-  "SLF",  # flake8-self
-  "SLOT", # flake8-slots
-  "T100", # flake8-debugger
-  "TRY",  # tryceratops
-  "UP",   # pyupgrade
-  "W",    # pycodestyle
-  "YTT",  # flake8-2020
+    "A", # flake8-builtins
+    "B", # flake8-bugbear
+    "C4", # flake8-comprehensions
+    "C90", # maccabe
+    "COM", # flake8-commas
+    "D", # pydocstyle
+    "DTZ", # flake8-datetimez
+    "E", # pycodestyle
+    "ERA", # flake8-eradicate
+    "EXE", # flake8-executable
+    "F", # pyflakes
+    "FA", # flake8-future-annotations
+    "FBT", # flake8-boolean-trap
+    "FLY", # pyflint
+    "FURB", # refurb
+    "G", # flake8-logging-format
+    "I", # isort
+    "ICN", # flake8-import-conventions
+    "ISC", # flake8-implicit-str-concat
+    "LOG", # flake8-logging
+    "N", # pep8-naming
+    "PERF", # perflint
+    "PIE", # flake8-pie
+    "PL", # pylint
+    "PT", # flake8-pytest-style
+    "PTH", # flake8-use-pathlib
+    "Q", # flake8-quotes
+    "RET", # flake8-return
+    "RSE", # flake8-raise
+    "RUF", # ruff
+    "S", # flake8-bandit
+    "SIM", # flake8-simpify
+    "SLF", # flake8-self
+    "SLOT", # flake8-slots
+    "T100", # flake8-debugger
+    "TRY", # tryceratops
+    "UP", # pyupgrade
+    "W", # pycodestyle
+    "YTT", # flake8-2020
 ]
 ignore = [
-  "A005",   # allow to shadow stdlib and builtin module names
-  "COM812", # trailing comma, conflicts with `ruff format`
-  # Different doc rules that we don't really care about:
-  "D",
-  "ISC001",  # implicit string concat conflicts with `ruff format`
-  "ISC003",  # prefer explicit string concat over implicit concat
-  "PLR09",   # we have our own complexity rules
-  "PLR2004", # do not report magic numbers
-  "PLR6301", # do not require classmethod / staticmethod when self not used
-  "TRY003",  # long exception messages from `tryceratops`
+    "A005", # allow to shadow stdlib and builtin module names
+    "COM812", # trailing comma, conflicts with `ruff format`
+    # Different doc rules that we don't really care about:
+    "D",
+    "ISC001", # implicit string concat conflicts with `ruff format`
+    "ISC003", # prefer explicit string concat over implicit concat
+    "PLR09", # we have our own complexity rules
+    "PLR2004", # do not report magic numbers
+    "PLR6301", # do not require classmethod / staticmethod when self not used
+    "TRY003", # long exception messages from `tryceratops`
 ]
-external = [ "WPS" ]
+external = ["WPS"]
 
 [tool.ruff.lint.per-file-ignores]
 "tests/*.py" = [
-  "S101", # asserts
+    "S101", # asserts
 ]
 
 [tool.ruff.lint.isort]

src/template_project/migrations/env.py

@@ -1,3 +1,5 @@
+import asyncio
+import sys
 from logging.config import fileConfig
 import os
 from pathlib import Path
@@ -7,6 +9,9 @@ from sqlalchemy import pool
 
 from alembic import context
 
+if sys.platform == "win32":
+    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
+
 from template_project.web_api.configuration import load_configuration
 
 # this is the Alembic Config object, which provides
@@ -23,11 +28,13 @@ if config.config_file_name is not None:
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
 from template_project.adapters.data_gateways.tables import meta_data
+
 target_metadata = meta_data
 
 configuration = load_configuration(Path(os.environ["CONFIGURATION_PATH"]))
 config.set_main_option("sqlalchemy.url", configuration.database.url.get_value())
 
+
 # other values from the config, defined by the needs of env.py,
 # can be acquired:
 # my_important_option = config.get_main_option("my_important_option")

src/template_project/web_api/entry_point.py

@@ -1,6 +1,7 @@
 import argparse
 import asyncio
 import os
+import selectors
 import sys
 from collections.abc import AsyncIterator
 from contextlib import asynccontextmanager
@@ -70,27 +71,27 @@ def make_asgi_application(
     return app
 
 
-def _main(
+async def _main(
     configuration_path: Path,
 ) -> None:
     configuration = load_configuration(configuration_path)
     ioc = make_ioc(configuration)
     asgi_application = make_asgi_application(ioc)
 
-    uvicorn.run(
-        asgi_application,
-        port=configuration.server.port,
+    config = uvicorn.Config(
+        app=asgi_application,
         host=configuration.server.host,
+        port=configuration.server.port,
         log_config=LOG_CONFIG,
         access_log=configuration.server.access_log,
     )
+    server = uvicorn.Server(config)
+    await server.serve()
 
 
 def main() -> None:
     if sys.platform == "win32":
-        from asyncio import WindowsSelectorEventLoopPolicy  # noqa: PLC0415
-
-        asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())
+        asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
 
     arg_parser = argparse.ArgumentParser()
     arg_parser.add_argument("configuration", default=None)
@@ -103,7 +104,7 @@ def main() -> None:
             "pass the path to the config or specify it in the environment variables `CONFIGURATION_PATH`",
         )
 
-    _main(Path(configuration_path))
+    asyncio.run(_main(Path(configuration_path)))
 
 
 if __name__ == "__main__":

src/template_project/web_api/routes/user.py

@@ -1,3 +1,5 @@
+import asyncio
+
 from dishka import FromDishka
 from dishka.integrations.fastapi import DishkaRoute
 from fastapi import APIRouter