dekun
45 lines
1.9 KiB
Python
45 lines
1.9 KiB
Python
"""给已经上线的库补上认证字段。create_all 不会修改旧表。"""
|
|
|
|
from sqlalchemy import inspect, text
|
|
|
|
from app.database import engine
|
|
|
|
|
|
def upgrade_schema() -> None:
|
|
inspector = inspect(engine)
|
|
tables = set(inspector.get_table_names())
|
|
statements: list[str] = []
|
|
need_username_index = False
|
|
if "users" in tables:
|
|
columns = {column["name"] for column in inspector.get_columns("users")}
|
|
if "username" not in columns:
|
|
statements.append("ALTER TABLE users ADD COLUMN username VARCHAR(32)")
|
|
if "password_hash" not in columns:
|
|
statements.append("ALTER TABLE users ADD COLUMN password_hash VARCHAR(255)")
|
|
if "role" not in columns:
|
|
statements.append("ALTER TABLE users ADD COLUMN role VARCHAR(16) DEFAULT 'user' NOT NULL")
|
|
need_username_index = not _has_username_index(inspector)
|
|
if "compute_nodes" in tables:
|
|
node_columns = {column["name"] for column in inspector.get_columns("compute_nodes")}
|
|
if "node_token" not in node_columns:
|
|
statements.append("ALTER TABLE compute_nodes ADD COLUMN node_token VARCHAR(128)")
|
|
statements.append(
|
|
"CREATE UNIQUE INDEX IF NOT EXISTS uq_compute_nodes_node_token ON compute_nodes (node_token)"
|
|
)
|
|
if not statements and not need_username_index:
|
|
return
|
|
with engine.begin() as conn:
|
|
for statement in statements:
|
|
conn.execute(text(statement))
|
|
if need_username_index:
|
|
conn.execute(text("CREATE UNIQUE INDEX IF NOT EXISTS uq_users_username ON users (username)"))
|
|
|
|
|
|
def _has_username_index(inspector) -> bool:
|
|
if "users" not in inspector.get_table_names():
|
|
return False
|
|
for index in inspector.get_indexes("users"):
|
|
if index.get("column_names") == ["username"] and index.get("unique"):
|
|
return True
|
|
return False
|