PDF-accessibility-saas/backend/alembic/versions/001_initial_schema.py
Vadym Samoilenko fc6f4a12e6 Phase 2+3: FastAPI backend + multi-tenancy schema
Backend (replaces PHP api.php + auth.php):
- FastAPI app with routers: jobs, auth, billing
- Supabase JWT authentication in deps.py
- Celery + Redis job queue (process_pdf_task)
- MinIO S3-compatible storage service
- PDF checker wrapper (delegates to enterprise_pdf_checker.py)
- Stripe billing: checkout, portal, webhook handler

Multi-tenancy (Phase 3):
- Alembic migration 001: workspaces, workspace_members, jobs, usage_events
- Row-Level Security on all tenant tables via app.workspace_id session var
- Monthly quota enforcement per workspace (402 on exceeded)
- Plan tiers: free(5) / pro(100) / business(unlimited)

Config:
- pydantic-settings based config.py (no hardcoded values)
- docker-compose.yml rewritten: postgres, redis, minio, api, celery

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-19 14:46:05 +01:00

96 lines
5.1 KiB
Python

"""Initial SaaS schema — workspaces, jobs, usage_events with RLS
Revision ID: 001
Revises:
Create Date: 2026-05-19
"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import UUID, JSONB
revision = "001"
down_revision = None
branch_labels = None
depends_on = None
def upgrade() -> None:
op.execute('CREATE EXTENSION IF NOT EXISTS "pgcrypto"')
# ── Workspaces ───────────────────────────────────────────────────────────
op.create_table(
"workspaces",
sa.Column("id", UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
sa.Column("name", sa.String(255), nullable=False),
sa.Column("slug", sa.String(100), unique=True, nullable=False),
sa.Column("plan_tier", sa.String(50), nullable=False, server_default="free"),
sa.Column("monthly_quota", sa.Integer, nullable=False, server_default="5"),
sa.Column("stripe_customer_id", sa.String(255), nullable=True),
sa.Column("stripe_subscription_id", sa.String(255), nullable=True),
sa.Column("created_at", sa.TIMESTAMP(timezone=True), server_default=sa.text("NOW()")),
)
# ── Workspace Members ────────────────────────────────────────────────────
op.create_table(
"workspace_members",
sa.Column("workspace_id", UUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), primary_key=True),
sa.Column("user_id", sa.String(255), primary_key=True),
sa.Column("role", sa.String(50), nullable=False, server_default="member"),
sa.Column("created_at", sa.TIMESTAMP(timezone=True), server_default=sa.text("NOW()")),
)
# ── Jobs ─────────────────────────────────────────────────────────────────
op.create_table(
"jobs",
sa.Column("id", UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
sa.Column("workspace_id", UUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False),
sa.Column("user_id", sa.String(255), nullable=False),
sa.Column("filename", sa.String(500), nullable=False),
sa.Column("file_size", sa.Integer, nullable=True),
sa.Column("status", sa.String(50), nullable=False, server_default="pending"),
sa.Column("accessibility_score", sa.Float, nullable=True),
sa.Column("result", JSONB, nullable=True),
sa.Column("error_message", sa.Text, nullable=True),
sa.Column("created_at", sa.TIMESTAMP(timezone=True), server_default=sa.text("NOW()")),
sa.Column("updated_at", sa.TIMESTAMP(timezone=True), server_default=sa.text("NOW()")),
sa.Column("completed_at", sa.TIMESTAMP(timezone=True), nullable=True),
)
op.create_index("idx_jobs_workspace", "jobs", ["workspace_id"])
op.create_index("idx_jobs_status", "jobs", ["status"])
# ── Usage Events ─────────────────────────────────────────────────────────
op.create_table(
"usage_events",
sa.Column("id", sa.BigInteger, primary_key=True, autoincrement=True),
sa.Column("workspace_id", UUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False),
sa.Column("event_type", sa.String(100), nullable=False),
sa.Column("job_id", UUID(as_uuid=True), nullable=True),
sa.Column("created_at", sa.TIMESTAMP(timezone=True), server_default=sa.text("NOW()")),
)
op.create_index("idx_usage_workspace_month", "usage_events", ["workspace_id", "created_at"])
# ── Row-Level Security ────────────────────────────────────────────────────
# app.workspace_id is set per-request in FastAPI deps.py
for table in ("jobs", "usage_events"):
op.execute(f"ALTER TABLE {table} ENABLE ROW LEVEL SECURITY")
op.execute(f"""
CREATE POLICY workspace_isolation ON {table}
USING (workspace_id = current_setting('app.workspace_id', true)::uuid)
""")
op.execute("ALTER TABLE workspaces ENABLE ROW LEVEL SECURITY")
op.execute("""
CREATE POLICY workspace_self ON workspaces
USING (id = current_setting('app.workspace_id', true)::uuid)
""")
op.execute("ALTER TABLE workspace_members ENABLE ROW LEVEL SECURITY")
op.execute("""
CREATE POLICY members_workspace ON workspace_members
USING (workspace_id = current_setting('app.workspace_id', true)::uuid)
""")
def downgrade() -> None:
for table in ("usage_events", "jobs", "workspace_members", "workspaces"):
op.execute(f"DROP TABLE IF EXISTS {table} CASCADE")