227 lines
9.3 KiB
Python
227 lines
9.3 KiB
Python
"""M0 初始结构：workspace / app_user / member / invitation / audit_log + 行级安全。
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注意：RLS 策略是**安全边界**，不是优化项。改这个文件请同时改
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`tests/test_tenant_isolation.py`，并在 PR 里说明为什么。
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"""
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from __future__ import annotations
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from collections.abc import Sequence
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import sqlalchemy as sa
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from alembic import op
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from sqlalchemy.dialects import postgresql
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from app.roles import APP_ROLE, OWNER_ROLE
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revision: str = "0001"
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down_revision: str | None = None
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branch_labels: str | Sequence[str] | None = None
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depends_on: str | Sequence[str] | None = None
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# 说明：asyncpg 走"预备语句"执行，**一条 execute 里只能有一条 SQL**，
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# 多条语句会报 `cannot insert multiple commands into a prepared statement`。
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# 所以这里按语句拆成元组，逐条执行。
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HELPER_STATEMENTS: tuple[str, ...] = (
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"""
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CREATE OR REPLACE FUNCTION app_ws_id() RETURNS uuid
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LANGUAGE sql STABLE AS $$
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SELECT nullif(current_setting('app.ws_id', true), '')::uuid
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$$
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""",
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"""
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CREATE OR REPLACE FUNCTION app_user_id() RETURNS uuid
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LANGUAGE sql STABLE AS $$
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SELECT nullif(current_setting('app.user_id', true), '')::uuid
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$$
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""",
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)
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POLICY_STATEMENTS: tuple[str, ...] = (
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# ── workspace：本租户 OR 我是其成员（用于"我加入了哪些工作区"）──
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"ALTER TABLE workspace ENABLE ROW LEVEL SECURITY;",
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"""
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CREATE POLICY workspace_isolation ON workspace
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USING (
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id = app_ws_id()
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OR id IN (SELECT m.workspace_id FROM member m WHERE m.user_id = app_user_id())
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)
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WITH CHECK (id = app_ws_id());
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""",
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# ── member：本租户成员 OR 我自己那条 ──
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"ALTER TABLE member ENABLE ROW LEVEL SECURITY;",
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"""
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CREATE POLICY member_isolation ON member
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USING (workspace_id = app_ws_id() OR user_id = app_user_id())
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WITH CHECK (workspace_id = app_ws_id());
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""",
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# ── invitation ──
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"ALTER TABLE invitation ENABLE ROW LEVEL SECURITY;",
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"""
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CREATE POLICY invitation_isolation ON invitation
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USING (workspace_id = app_ws_id())
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WITH CHECK (workspace_id = app_ws_id());
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""",
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# ── audit_log：只增不改，租户内可见 ──
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"ALTER TABLE audit_log ENABLE ROW LEVEL SECURITY;",
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"""
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CREATE POLICY audit_log_isolation ON audit_log
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USING (workspace_id = app_ws_id())
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WITH CHECK (workspace_id = app_ws_id());
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""",
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# ── 授权：应用角色没有 DDL、没有 BYPASSRLS，只能读写到自己该看的数据 ──
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f"GRANT USAGE ON SCHEMA public TO {APP_ROLE};",
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(
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"GRANT SELECT, INSERT, UPDATE, DELETE ON "
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f"workspace, app_user, member, invitation, audit_log TO {APP_ROLE};"
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),
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(
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f"ALTER DEFAULT PRIVILEGES FOR ROLE {OWNER_ROLE} IN SCHEMA public "
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f"GRANT SELECT, INSERT, UPDATE, DELETE ON TABLES TO {APP_ROLE};"
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),
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)
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def _exec_each(statements: tuple[str, ...]) -> None:
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for statement in statements:
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op.execute(statement)
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def upgrade() -> None:
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_exec_each(HELPER_STATEMENTS)
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op.create_table(
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"app_user",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column("phone", sa.String(32), nullable=False, unique=True),
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sa.Column("nickname", sa.String(64), nullable=False, server_default=""),
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sa.Column("avatar_url", sa.String(512)),
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sa.Column("status", sa.String(16), nullable=False, server_default="active"),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("version", sa.Integer, nullable=False, server_default="1"),
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)
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op.create_index("ix_app_user_phone", "app_user", ["phone"])
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op.create_table(
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"workspace",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column("name", sa.String(64), nullable=False),
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sa.Column("slug", sa.String(64), nullable=False, unique=True),
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sa.Column("plan", sa.String(16), nullable=False, server_default="free"),
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sa.Column(
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"owner_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("app_user.id", ondelete="RESTRICT"),
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nullable=False,
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),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("version", sa.Integer, nullable=False, server_default="1"),
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sa.Column("deleted_at", sa.DateTime(timezone=True)),
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)
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op.create_index("ix_workspace_owner", "workspace", ["owner_id"])
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op.create_table(
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"member",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column(
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"workspace_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("workspace.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column(
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"user_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("app_user.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column("role", sa.String(16), nullable=False, server_default="member"),
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sa.Column("status", sa.String(16), nullable=False, server_default="active"),
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sa.Column("joined_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("version", sa.Integer, nullable=False, server_default="1"),
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sa.UniqueConstraint("workspace_id", "user_id", name="uq_member_ws_user"),
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sa.CheckConstraint("role IN ('owner','admin','member','guest')", name="ck_member_role"),
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sa.CheckConstraint("status IN ('active','removed')", name="ck_member_status"),
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)
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op.create_index("ix_member_user", "member", ["user_id"])
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op.create_index("ix_member_created", "member", ["created_at", "id"])
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op.create_table(
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"invitation",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column(
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"workspace_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("workspace.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column("code", sa.String(32), nullable=False),
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sa.Column("role", sa.String(16), nullable=False, server_default="member"),
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sa.Column(
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"invited_by",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("app_user.id", ondelete="RESTRICT"),
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nullable=False,
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),
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sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
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sa.Column("accepted_at", sa.DateTime(timezone=True)),
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sa.Column(
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"accepted_by",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("app_user.id", ondelete="SET NULL"),
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),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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sa.Column("version", sa.Integer, nullable=False, server_default="1"),
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sa.UniqueConstraint("code", name="uq_invitation_code"),
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)
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op.create_index("ix_invitation_ws", "invitation", ["workspace_id"])
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op.create_table(
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"audit_log",
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sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
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sa.Column(
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"workspace_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("workspace.id", ondelete="SET NULL"),
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),
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sa.Column(
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"actor_user_id",
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postgresql.UUID(as_uuid=True),
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sa.ForeignKey("app_user.id", ondelete="SET NULL"),
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),
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sa.Column("action", sa.String(64), nullable=False),
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sa.Column("target_type", sa.String(32), nullable=False, server_default=""),
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sa.Column("target_id", sa.String(64), nullable=False, server_default=""),
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sa.Column("payload", postgresql.JSONB),
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sa.Column("ip", sa.String(64), nullable=False, server_default=""),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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)
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op.create_index("ix_audit_ws_created", "audit_log", ["workspace_id", "created_at"])
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_exec_each(POLICY_STATEMENTS)
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def downgrade() -> None:
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op.execute(f"REVOKE ALL ON workspace, app_user, member, invitation, audit_log FROM {APP_ROLE};")
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# 必须先删策略：workspace 的策略里引用了 member，直接 drop 表会报
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# "cannot drop table member because other objects depend on it"。
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for table, policy in (
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("workspace", "workspace_isolation"),
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("member", "member_isolation"),
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("invitation", "invitation_isolation"),
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("audit_log", "audit_log_isolation"),
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):
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op.execute(f"DROP POLICY IF EXISTS {policy} ON {table};")
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op.drop_table("audit_log")
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op.drop_table("invitation")
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op.drop_table("member")
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op.drop_table("workspace")
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op.drop_table("app_user")
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op.execute("DROP FUNCTION IF EXISTS app_ws_id();")
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op.execute("DROP FUNCTION IF EXISTS app_user_id();")
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