https://www.youtube.com/watch?v=XWJWJfTWjSs&list=PLYnH8mpFQ4akzzS1D9IHkMuXacb-bD4Cl&index=9

.gitignore

@@ -1,6 +1,7 @@
-.vscode
+!alembic/
+.vscode/
 .env
-.venv
+.venv/
 .log
-.idea
+.idea/
 *.idea

docker-compose.yml

@@ -0,0 +1,9 @@
+services:
+  pg:
+    image: postgres
+    environment:
+      POSTGRES_DB: sipi
+      POSTGRES_USER: sys.sipidb
+      POSTGRES_PASSWORD: password
+    ports:
+      - "5432:5432"

poetry.lock

@@ -18,6 +18,25 @@ PyMySQL = ">=1.0"
 rsa = ["PyMySQL[rsa] (>=1.0)"]
 sa = ["sqlalchemy (>=1.3,<1.4)"]
 
+[[package]]
+name = "alembic"
+version = "1.13.2"
+description = "A database migration tool for SQLAlchemy."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "alembic-1.13.2-py3-none-any.whl", hash = "sha256:6b8733129a6224a9a711e17c99b08462dbf7cc9670ba8f2e2ae9af860ceb1953"},
+    {file = "alembic-1.13.2.tar.gz", hash = "sha256:1ff0ae32975f4fd96028c39ed9bb3c867fe3af956bd7bb37343b54c9fe7445ef"},
+]
+
+[package.dependencies]
+Mako = "*"
+SQLAlchemy = ">=1.3.0"
+typing-extensions = ">=4"
+
+[package.extras]
+tz = ["backports.zoneinfo"]
+
 [[package]]
 name = "annotated-types"
 version = "0.7.0"
@@ -103,6 +122,50 @@ files = [
 docs = ["Sphinx (>=5.3.0,<5.4.0)", "sphinx-rtd-theme (>=1.2.2)", "sphinxcontrib-asyncio (>=0.3.0,<0.4.0)"]
 test = ["flake8 (>=6.1,<7.0)", "uvloop (>=0.15.3)"]
 
+[[package]]
+name = "black"
+version = "24.4.2"
+description = "The uncompromising code formatter."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "black-24.4.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:dd1b5a14e417189db4c7b64a6540f31730713d173f0b63e55fabd52d61d8fdce"},
+    {file = "black-24.4.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8e537d281831ad0e71007dcdcbe50a71470b978c453fa41ce77186bbe0ed6021"},
+    {file = "black-24.4.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:eaea3008c281f1038edb473c1aa8ed8143a5535ff18f978a318f10302b254063"},
+    {file = "black-24.4.2-cp310-cp310-win_amd64.whl", hash = "sha256:7768a0dbf16a39aa5e9a3ded568bb545c8c2727396d063bbaf847df05b08cd96"},
+    {file = "black-24.4.2-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:257d724c2c9b1660f353b36c802ccece186a30accc7742c176d29c146df6e474"},
+    {file = "black-24.4.2-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:bdde6f877a18f24844e381d45e9947a49e97933573ac9d4345399be37621e26c"},
+    {file = "black-24.4.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:e151054aa00bad1f4e1f04919542885f89f5f7d086b8a59e5000e6c616896ffb"},
+    {file = "black-24.4.2-cp311-cp311-win_amd64.whl", hash = "sha256:7e122b1c4fb252fd85df3ca93578732b4749d9be076593076ef4d07a0233c3e1"},
+    {file = "black-24.4.2-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:accf49e151c8ed2c0cdc528691838afd217c50412534e876a19270fea1e28e2d"},
+    {file = "black-24.4.2-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:88c57dc656038f1ab9f92b3eb5335ee9b021412feaa46330d5eba4e51fe49b04"},
+    {file = "black-24.4.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:be8bef99eb46d5021bf053114442914baeb3649a89dc5f3a555c88737e5e98fc"},
+    {file = "black-24.4.2-cp312-cp312-win_amd64.whl", hash = "sha256:415e686e87dbbe6f4cd5ef0fbf764af7b89f9057b97c908742b6008cc554b9c0"},
+    {file = "black-24.4.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:bf10f7310db693bb62692609b397e8d67257c55f949abde4c67f9cc574492cc7"},
+    {file = "black-24.4.2-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:98e123f1d5cfd42f886624d84464f7756f60ff6eab89ae845210631714f6db94"},
+    {file = "black-24.4.2-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:48a85f2cb5e6799a9ef05347b476cce6c182d6c71ee36925a6c194d074336ef8"},
+    {file = "black-24.4.2-cp38-cp38-win_amd64.whl", hash = "sha256:b1530ae42e9d6d5b670a34db49a94115a64596bc77710b1d05e9801e62ca0a7c"},
+    {file = "black-24.4.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:37aae07b029fa0174d39daf02748b379399b909652a806e5708199bd93899da1"},
+    {file = "black-24.4.2-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:da33a1a5e49c4122ccdfd56cd021ff1ebc4a1ec4e2d01594fef9b6f267a9e741"},
+    {file = "black-24.4.2-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ef703f83fc32e131e9bcc0a5094cfe85599e7109f896fe8bc96cc402f3eb4b6e"},
+    {file = "black-24.4.2-cp39-cp39-win_amd64.whl", hash = "sha256:b9176b9832e84308818a99a561e90aa479e73c523b3f77afd07913380ae2eab7"},
+    {file = "black-24.4.2-py3-none-any.whl", hash = "sha256:d36ed1124bb81b32f8614555b34cc4259c3fbc7eec17870e8ff8ded335b58d8c"},
+    {file = "black-24.4.2.tar.gz", hash = "sha256:c872b53057f000085da66a19c55d68f6f8ddcac2642392ad3a355878406fbd4d"},
+]
+
+[package.dependencies]
+click = ">=8.0.0"
+mypy-extensions = ">=0.4.3"
+packaging = ">=22.0"
+pathspec = ">=0.9.0"
+platformdirs = ">=2"
+
+[package.extras]
+colorama = ["colorama (>=0.4.3)"]
+d = ["aiohttp (>=3.7.4)", "aiohttp (>=3.7.4,!=3.9.0)"]
+jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
+uvloop = ["uvloop (>=0.15.2)"]
+
 [[package]]
 name = "certifi"
 version = "2024.7.4"
@@ -432,6 +495,25 @@ MarkupSafe = ">=2.0"
 [package.extras]
 i18n = ["Babel (>=2.7)"]
 
+[[package]]
+name = "mako"
+version = "1.3.5"
+description = "A super-fast templating language that borrows the best ideas from the existing templating languages."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "Mako-1.3.5-py3-none-any.whl", hash = "sha256:260f1dbc3a519453a9c856dedfe4beb4e50bd5a26d96386cb6c80856556bb91a"},
+    {file = "Mako-1.3.5.tar.gz", hash = "sha256:48dbc20568c1d276a2698b36d968fa76161bf127194907ea6fc594fa81f943bc"},
+]
+
+[package.dependencies]
+MarkupSafe = ">=0.9.2"
+
+[package.extras]
+babel = ["Babel"]
+lingua = ["lingua"]
+testing = ["pytest"]
+
 [[package]]
 name = "markdown-it-py"
 version = "3.0.0"
@@ -536,6 +618,17 @@ files = [
     {file = "mdurl-0.1.2.tar.gz", hash = "sha256:bb413d29f5eea38f31dd4754dd7377d4465116fb207585f97bf925588687c1ba"},
 ]
 
+[[package]]
+name = "mypy-extensions"
+version = "1.0.0"
+description = "Type system extensions for programs checked with the mypy type checker."
+optional = false
+python-versions = ">=3.5"
+files = [
+    {file = "mypy_extensions-1.0.0-py3-none-any.whl", hash = "sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d"},
+    {file = "mypy_extensions-1.0.0.tar.gz", hash = "sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782"},
+]
+
 [[package]]
 name = "orjson"
 version = "3.10.6"
@@ -607,6 +700,33 @@ files = [
     {file = "packaging-24.1.tar.gz", hash = "sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"},
 ]
 
+[[package]]
+name = "pathspec"
+version = "0.12.1"
+description = "Utility library for gitignore style pattern matching of file paths."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pathspec-0.12.1-py3-none-any.whl", hash = "sha256:a0d503e138a4c123b27490a4f7beda6a01c6f288df0e4a8b79c7eb0dc7b4cc08"},
+    {file = "pathspec-0.12.1.tar.gz", hash = "sha256:a482d51503a1ab33b1c67a6c3813a26953dbdc71c31dacaef9a838c4e29f5712"},
+]
+
+[[package]]
+name = "platformdirs"
+version = "4.2.2"
+description = "A small Python package for determining appropriate platform-specific dirs, e.g. a `user data dir`."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "platformdirs-4.2.2-py3-none-any.whl", hash = "sha256:2d7a1657e36a80ea911db832a8a6ece5ee53d8de21edd5cc5879af6530b1bfee"},
+    {file = "platformdirs-4.2.2.tar.gz", hash = "sha256:38b7b51f512eed9e84a22788b4bce1de17c0adb134d6becb09836e37d8654cd3"},
+]
+
+[package.extras]
+docs = ["furo (>=2023.9.10)", "proselint (>=0.13)", "sphinx (>=7.2.6)", "sphinx-autodoc-typehints (>=1.25.2)"]
+test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.4.3)", "pytest-cov (>=4.1)", "pytest-mock (>=3.12)"]
+type = ["mypy (>=1.8)"]
+
 [[package]]
 name = "pluggy"
 version = "1.5.0"
@@ -1401,4 +1521,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.12"
-content-hash = "3bede1020d1a7fb055f4332cb83dd555c5edb67f8c6afb67ad02a6e839655ec6"
+content-hash = "b805d7217d4a5f810fa35f95f5c0525af761ce3cd4b71676ae11a309feb547f4"

pyproject.toml

@@ -15,9 +15,11 @@ pydantic-settings = "^2.3.4"
 sqlalchemy = {extras = ["asyncio"], version = "^2.0.31"}
 aiomysql = "^0.2.0"
 asyncpg = "^0.29.0"
+alembic = "^1.13.2"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.2.2"
+black = "^24.4.2"
 
 [build-system]
 requires = ["poetry-core"]

sipi-app/.env-template

@@ -0,0 +1,2 @@
+SIPI_CONFIG__DB__URL=postgresql+asyncpg://username:password@localhost:5432/dbname
+SIPI_CONFIG__DB__ECHO=0

sipi-app/alembic.ini

@@ -0,0 +1,114 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts.
+# Use forward slashes (/) also on windows to provide an os agnostic path
+script_location = alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python>=3.9 or backports.zoneinfo library.
+# Any required deps can installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to ZoneInfo()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator" below.
+# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+sqlalchemy.url = driver://user:pass@localhost/dbname
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+hooks = black
+black.type = console_scripts
+black.entrypoint = black
+black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# lint with attempts to fix using "ruff" - use the exec runner, execute a binary
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = %(here)s/.venv/bin/ruff
+# ruff.options = --fix REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

sipi-app/alembic/README

@@ -0,0 +1 @@
+Generic single-database configuration with an async dbapi.

sipi-app/alembic/env.py

@@ -0,0 +1,92 @@
+import asyncio
+from logging.config import fileConfig
+
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from alembic import context
+
+from core.config import settings
+from core.models import Base
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = Base.metadata
+
+# 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")
+# ... etc.
+config.set_main_option('sqlalchemy.url', str(settings.db.url))
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    """In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+
+    asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

sipi-app/alembic/script.py.mako

@@ -0,0 +1,26 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

sipi-app/alembic/versions/2024_07_11_2208-799cc8915cb1_create_users_table.py

@@ -0,0 +1,34 @@
+"""create users table
+
+Revision ID: 799cc8915cb1
+Revises: 
+Create Date: 2024-07-11 22:08:25.362239
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "799cc8915cb1"
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "users",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("username", sa.String(), nullable=False),
+        sa.PrimaryKeyConstraint("id", name=op.f("pk_users")),
+        sa.UniqueConstraint("username", name=op.f("uq_users_username")),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("users")
+

sipi-app/alembic/versions/2024_07_11_2211-443e39c236a6_update_users_table.py

@@ -0,0 +1,37 @@
+"""update users table
+
+Revision ID: 443e39c236a6
+Revises: 799cc8915cb1
+Create Date: 2024-07-11 22:11:47.011912
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "443e39c236a6"
+down_revision: Union[str, None] = "799cc8915cb1"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("users", sa.Column("foo", sa.Integer(), nullable=False))
+    op.add_column("users", sa.Column("bar", sa.Integer(), nullable=False))
+    op.create_unique_constraint(
+        op.f("uq_users_foo_bar"), "users", ["foo", "bar"]
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(op.f("uq_users_foo_bar"), "users", type_="unique")
+    op.drop_column("users", "bar")
+    op.drop_column("users", "foo")
+    # ### end Alembic commands ###

sipi-app/api/api_v1/__init__.py

@@ -0,0 +1,13 @@
+from fastapi import APIRouter
+
+from core.config import settings
+
+from .users import router as users_router
+
+router = APIRouter(
+    prefix=settings.api.v1.users,
+)
+
+router.include_router(users_router,
+                      prefix=settings.api.v1.users,
+                      )

sipi-app/api/api_v1/users.py

@@ -0,0 +1,6 @@
+from fastapi import APIRouter
+
+
+router = APIRouter(
+    tags=['Users'],
+)

sipi-app/core/config.py

@@ -14,8 +14,14 @@ class RunConfig(BaseModel):
     reload: bool = True
 
 
+class ApiV1Prefix(BaseModel):
+    prefix: str = '/v1'
+    users: str = '/users'
+
+
 class ApiPrefix(BaseModel):
     prefix: str = '/api'
+    v1: ApiV1Prefix = ApiV1Prefix()
 
 
 class DatabaseConfig(BaseModel):
@@ -26,19 +32,19 @@ class DatabaseConfig(BaseModel):
     max_overflow: int = 10
 
     naming_convention: dict[str, str] = {
-        "ix": "ix_%(column_0_label)s",
+        'ix': 'ix_%(column_0_label)s',
-        "uq": "uq_%(table_name)s_%(column_0_N_name)s",
+        'uq': 'uq_%(table_name)s_%(column_0_N_name)s',
-        "ck": "ck_%(table_name)s_%(constraint_name)s",
+        'ck': 'ck_%(table_name)s_%(constraint_name)s',
-        "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
+        'fk': 'fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s',
-        "pk": "pk_%(table_name)s",
+        'pk': 'pk_%(table_name)s',
     }
 
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(
-        env_file=(".env.template", ".env"),
+        env_file=('.env-template', '.env'),
         case_sensitive=False,
-        env_nested_delimiter="__",
+        env_nested_delimiter='__',
-        env_prefix="APP_CONFIG__",
+        env_prefix='SIPI_CONFIG__',
     )
     run: RunConfig = RunConfig()
     api: ApiPrefix = ApiPrefix()
@@ -46,3 +52,4 @@ class Settings(BaseSettings):
 
 
 settings = Settings()
+

sipi-app/core/models/__init__.py

@@ -1,5 +1,9 @@
 __all__ = (
-    'db_helper'
+    'db_helper',
+    'Base',
+    'User',
 )
 
 from .db_helper import db_helper
+from .base import Base
+from .user import User

sipi-app/core/models/base.py

@@ -0,0 +1,19 @@
+from sqlalchemy import MetaData
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, declared_attr
+
+from core.config import settings
+from utils import camel_case_to_snake_case
+
+
+
+class Base(DeclarativeBase):
+    __abstract__ = True
+
+    metadata = MetaData(
+        naming_convention=settings.db.naming_convention,
+    )
+    @declared_attr.directive
+    def __tablename__(cls) -> str:
+        return f'{camel_case_to_snake_case(cls.__name__)}s'
+
+    id: Mapped[int] = mapped_column(primary_key=True)

sipi-app/core/models/db_helper.py

@@ -1,4 +1,8 @@
-from sqlalchemy.ext.asyncio import create_async_engine, AsyncEngine, async_sessionmaker, AsyncSession
+from sqlalchemy.ext.asyncio import create_async_engine
+from sqlalchemy.ext.asyncio import AsyncEngine
+from sqlalchemy.ext.asyncio import async_sessionmaker
+from sqlalchemy.ext.asyncio import AsyncSession
+
 from typing import AsyncGenerator
 
 from core.config import settings

sipi-app/core/models/user.py

@@ -0,0 +1,14 @@
+from sqlalchemy import UniqueConstraint
+from sqlalchemy.orm import Mapped
+from sqlalchemy.orm import mapped_column
+from .base import Base
+
+
+class User(Base):
+    username: Mapped[str] = mapped_column(unique=True)
+    foo: Mapped[int]
+    bar: Mapped[int]
+
+    __table_args__ = (
+        UniqueConstraint('foo', 'bar'),
+    )

sipi-app/main.py

@@ -10,15 +10,13 @@ from fastapi import FastAPI
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    #startap
     yield
-    #shutdown
-    print('dispose engine')
     await db_helper.dispose()
 
 main_app = FastAPI(
     lifespan=lifespan,
 )
+
 main_app.include_router(api_router,
                    prefix=settings.api.prefix)
 

sipi-app/utils/__init__.py

@@ -0,0 +1,5 @@
+__all__ = (
+    'camel_case_to_snake_case',
+)
+
+from .case_converter import camel_case_to_snake_case

sipi-app/utils/case_converter.py

@@ -0,0 +1,29 @@
+"""
+Taken from
+https://github.com/mahenzon/ri-sdk-python-wrapper/blob/master/ri_sdk_codegen/utils/case_converter.py
+"""
+
+
+def camel_case_to_snake_case(input_str: str) -> str:
+    """
+    >>> camel_case_to_snake_case("SomeSDK")
+    'some_sdk'
+    >>> camel_case_to_snake_case("RServoDrive")
+    'r_servo_drive'
+    >>> camel_case_to_snake_case("SDKDemo")
+    'sdk_demo'
+    """
+    chars = []
+    for c_idx, char in enumerate(input_str):
+        if c_idx and char.isupper():
+            nxt_idx = c_idx + 1
+            # idea of the flag is to separate abbreviations
+            # as new words, show them in lower case
+            flag = nxt_idx >= len(input_str) or input_str[nxt_idx].isupper()
+            prev_char = input_str[c_idx - 1]
+            if prev_char.isupper() and flag:
+                pass
+            else:
+                chars.append("_")
+        chars.append(char.lower())
+    return "".join(chars)