9d0d29ef18
Database Infrastructure: - Added Alembic migration system (alembic.ini, env.py) - Migration 001: Initial schema - Migration 004: Stat materialized views (enhanced) - Migration 005: Composite indexes for performance - operations.py: Session injection support for test isolation - session.py: Enhanced session management Application Updates: - main.py: Integration with new database infrastructure - health.py: Enhanced health checks with pool monitoring Integration Tests: - conftest.py: Session injection pattern for reliable tests - test_operations.py: Database operations tests - test_migrations.py: Migration verification tests Session injection pattern enables: - Production: Auto-commit per operation - Testing: Shared session with automatic rollback - Transactions: Multiple ops, single commit 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
102 lines
2.7 KiB
Python
102 lines
2.7 KiB
Python
"""
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Alembic migration environment configuration.
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Uses synchronous psycopg2 driver for migrations while the application
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uses asyncpg at runtime. This is the standard pattern for Alembic with
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async SQLAlchemy applications.
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"""
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from logging.config import fileConfig
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from sqlalchemy import create_engine, pool
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from sqlalchemy.engine import Connection
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from alembic import context
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# Import Base and all models to ensure metadata is complete
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from app.database.session import Base
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from app.models.db_models import ( # noqa: F401
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Game,
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GameCardsetLink,
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GameSession,
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Lineup,
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Play,
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Roll,
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RosterLink,
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)
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# Load settings for database URL
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from app.config import get_settings
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# Alembic Config object - provides access to the .ini file values
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config = context.config
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# Get database URL from settings and convert for sync driver (psycopg2)
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settings = get_settings()
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# Replace asyncpg with psycopg2 for synchronous migrations
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sync_database_url = settings.database_url.replace("+asyncpg", "+psycopg2")
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config.set_main_option("sqlalchemy.url", sync_database_url)
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# Interpret the config file for Python logging
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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# Target metadata for 'autogenerate' support
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target_metadata = Base.metadata
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def run_migrations_offline() -> None:
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"""
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Run migrations in 'offline' mode.
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This configures the context with just a URL and not an Engine,
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generating SQL scripts without connecting to the database.
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"""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=url,
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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compare_type=True, # Detect column type changes
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compare_server_default=True, # Detect server_default changes
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)
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with context.begin_transaction():
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context.run_migrations()
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def do_run_migrations(connection: Connection) -> None:
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"""Execute migrations using the provided connection."""
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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compare_type=True,
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compare_server_default=True,
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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"""
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Run migrations in 'online' mode.
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Creates a synchronous engine and associates a connection with the context.
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"""
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connectable = create_engine(
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config.get_main_option("sqlalchemy.url"),
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poolclass=pool.NullPool,
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)
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with connectable.connect() as connection:
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do_run_migrations(connection)
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connectable.dispose()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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