Files

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Python

"""Session model — PostgreSQL audit trail for sessions."""
from __future__ import annotations
import uuid
from datetime import datetime
from sqlalchemy import DateTime, ForeignKey, String, func
from sqlalchemy.dialects.postgresql import UUID as PGUUID
from sqlalchemy.orm import Mapped, mapped_column
from app.core.db import Base, TenantMixin
class Session(Base, TenantMixin):
"""Immutable session audit record. Runtime session lookup uses Redis."""
__tablename__ = "sessions"
id: Mapped[uuid.UUID] = mapped_column(
PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
)
user_id: Mapped[uuid.UUID] = mapped_column(
PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True
)
csrf_token: Mapped[str] = mapped_column(String(255), nullable=False)
expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)