Initial Commit

alembic/README

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

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 db.base import Base
+from db.models import *  # noqa: F403
+
+# 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.
+
+
+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()

alembic/script.py.mako

@@ -0,0 +1,28 @@
+"""${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, Sequence[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:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

alembic/versions/ad794cb94d9c_initial_migration.py

@@ -0,0 +1,101 @@
+"""Initial Migration
+
+Revision ID: ad794cb94d9c
+Revises:
+Create Date: 2026-01-30 21:38:15.534474
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = "ad794cb94d9c"
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "categories",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("name", sa.Text(), nullable=True),
+        sa.Column("parent_id", sa.Integer(), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["parent_id"],
+            ["categories.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "orders",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("customer", sa.BigInteger(), nullable=True),
+        sa.Column(
+            "status",
+            postgresql.ENUM(
+                "CREATED",
+                "PAID",
+                "IN_PROGRESS",
+                "CANCELLED",
+                "DRAFT",
+                name="order_status",
+            ),
+            nullable=False,
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "products",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("category_id", sa.Integer(), nullable=True),
+        sa.Column("name", sa.Text(), nullable=True),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("search_vector", postgresql.TSVECTOR(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["category_id"],
+            ["categories.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        "idx_products_search",
+        "products",
+        ["search_vector"],
+        unique=False,
+        postgresql_using="gin",
+    )
+    op.create_table(
+        "order_items",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("order_id", sa.Integer(), nullable=False),
+        sa.Column("product_id", sa.Integer(), nullable=False),
+        sa.Column("quantity", sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["order_id"],
+            ["orders.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["product_id"],
+            ["products.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("order_items")
+    op.drop_index("idx_products_search", table_name="products", postgresql_using="gin")
+    op.drop_table("products")
+    op.drop_table("orders")
+    op.drop_table("categories")
+    # ### end Alembic commands ###

alembic/versions/af58496e0468_product_search_vector_update_trigger_.py

@@ -0,0 +1,39 @@
+"""Product search vector update trigger addition
+
+Revision ID: af58496e0468
+Revises: ad794cb94d9c
+Create Date: 2026-01-30 21:39:39.839562
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "af58496e0468"
+down_revision: Union[str, Sequence[str], None] = "ad794cb94d9c"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    op.execute("""
+        CREATE TRIGGER products_search_vector_update
+        BEFORE INSERT OR UPDATE
+        ON products
+        FOR EACH ROW
+        EXECUTE FUNCTION
+        tsvector_update_trigger(
+            search_vector,
+            'pg_catalog.simple',
+            name,
+            description
+        );
+    """)
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    op.execute("DROP TRIGGER IF EXISTS products_search_vector_update ON products;")