Mateusz Gruszczyński
77 lines
1.7 KiB
Python
77 lines
1.7 KiB
Python
from __future__ import annotations
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from collections.abc import Callable
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from dataclasses import dataclass
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from sqlalchemy import inspect, text
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from .extensions import db
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@dataclass(frozen=True)
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class Migration:
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version: str
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upgrade: Callable[[], None]
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MIGRATIONS: tuple[Migration, ...] = ()
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def ensure_migration_table() -> None:
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inspector = inspect(db.engine)
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if inspector.has_table("schema_migration"):
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return
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db.session.execute(text("""
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CREATE TABLE schema_migration (
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version VARCHAR(100) PRIMARY KEY,
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applied_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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)
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"""))
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db.session.commit()
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def migrate_database() -> list[str]:
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"""Uruchamia wyłącznie niewykonane migracje."""
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ensure_migration_table()
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applied = {
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row[0]
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for row in db.session.execute(text("SELECT version FROM schema_migration"))
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}
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completed: list[str] = []
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for migration in MIGRATIONS:
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if migration.version in applied:
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continue
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try:
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migration.upgrade()
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db.session.execute(
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text("INSERT INTO schema_migration (version) VALUES (:version)"),
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{"version": migration.version},
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)
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db.session.commit()
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completed.append(migration.version)
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except Exception:
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db.session.rollback()
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raise
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return completed
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def main() -> None:
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from . import create_app
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app = create_app()
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with app.app_context():
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applied = migrate_database()
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if applied:
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print("Wykonane migracje: " + ", ".join(applied))
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else:
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print("Brak nowych migracji.")
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if __name__ == "__main__":
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main()
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