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6dc28f5868
* fix(persistence): auto-create the Postgres database only when it is missing init_engine retried bootstrap through CREATE DATABASE whenever the error text contained "does not exist". Postgres words missing relations, columns, functions and roles the same way, so a bootstrap that failed inside an existing database (for example a migration reading a dropped column) went on to CREATE DATABASE. Startup then failed with DuplicateDatabaseError, or with "permission denied to create database" for a role without CREATEDB, and the original error appeared nowhere in the traceback. Recognize a missing database by SQLSTATE 3D000 (invalid_catalog_name) instead, following __cause__ for a wrapped copy, and re-raise every other bootstrap error unchanged. A live PostgreSQL test covers both the missing-database path and an existing database whose migration fails. * docs(changelog): reference #7410 for the Postgres auto-create fix * fix(persistence): walk orig, __cause__ and __context__ for the missing-database SQLSTATE Match _is_unique_violation's chain walk, with its cycle guard, so a wrapper that keeps the driver error only on `orig` or `__context__` still triggers auto-create. Drop the live test's English message assertion; the SQLSTATE check already proves the original error surfaced. --------- Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
95 lines
3.4 KiB
Python
95 lines
3.4 KiB
Python
"""Live PostgreSQL checks for init_engine's missing-database auto-create.
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Opt in with DEERFLOW_TEST_POSTGRES_URL or TEST_POSTGRES_URI (set by the
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backend unit-test CI job). The role must be allowed to create databases.
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"""
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from __future__ import annotations
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import os
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import uuid
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from urllib.parse import parse_qsl, urlencode, urlsplit, urlunsplit
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import pytest
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import pytest_asyncio
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from sqlalchemy import text
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from sqlalchemy.engine.url import make_url
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from sqlalchemy.ext.asyncio import create_async_engine
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from deerflow.persistence import engine as engine_mod
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def _asyncpg_url(url: str | None) -> str | None:
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if not url:
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return url
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parts = urlsplit(url)
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scheme = "postgresql+asyncpg" if parts.scheme in {"postgres", "postgresql"} else parts.scheme
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query = urlencode([(key, value) for key, value in parse_qsl(parts.query, keep_blank_values=True) if key not in {"sslmode", "channel_binding"}])
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return urlunsplit(parts._replace(scheme=scheme, query=query))
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POSTGRES_URL = _asyncpg_url(os.getenv("DEERFLOW_TEST_POSTGRES_URL") or os.getenv("TEST_POSTGRES_URI"))
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pytestmark = [
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pytest.mark.asyncio,
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pytest.mark.skipif(not POSTGRES_URL, reason="set DEERFLOW_TEST_POSTGRES_URL or TEST_POSTGRES_URI to run live PostgreSQL tests"),
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]
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async def _execute_on_server(*statements: str, database: str | None = None) -> None:
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url = make_url(POSTGRES_URL or "")
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if database is not None:
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url = url.set(database=database)
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engine = create_async_engine(url, isolation_level="AUTOCOMMIT")
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try:
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async with engine.connect() as conn:
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for statement in statements:
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await conn.execute(text(statement))
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finally:
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await engine.dispose()
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@pytest_asyncio.fixture
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async def missing_database():
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name = f"deerflow_autocreate_{uuid.uuid4().hex[:12]}"
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url = make_url(POSTGRES_URL or "").set(database=name).render_as_string(hide_password=False)
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try:
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yield name, url
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finally:
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await engine_mod.close_engine()
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await _execute_on_server(f'DROP DATABASE IF EXISTS "{name}" WITH (FORCE)')
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async def test_missing_database_is_created_and_bootstrapped(missing_database) -> None:
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name, url = missing_database
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await engine_mod.init_engine("postgres", url=url)
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async with engine_mod.get_engine().connect() as conn:
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assert (await conn.execute(text("SELECT current_database()"))).scalar_one() == name
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assert (await conn.execute(text("SELECT version_num FROM alembic_version"))).scalar_one()
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async def test_bootstrap_failure_in_an_existing_database_is_not_masked(missing_database) -> None:
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name, url = missing_database
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await engine_mod.init_engine("postgres", url=url)
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await engine_mod.close_engine()
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# Leave an unguarded migration statement to fail: rewind to 0012 and drop
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# the column 0013's backfill UPDATE reads.
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await _execute_on_server(
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"UPDATE alembic_version SET version_num = '0012_mcp_task_results'",
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"ALTER TABLE mcp_tasks DROP COLUMN updated_at CASCADE",
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database=name,
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)
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with pytest.raises(Exception) as raised:
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await engine_mod.init_engine("postgres", url=url)
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# Before the fix, this tried CREATE DATABASE and raised DuplicateDatabaseError.
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sqlstates = []
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error: BaseException | None = raised.value
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while error is not None:
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sqlstates.append(getattr(error, "sqlstate", None))
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error = error.__cause__
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assert "42703" in sqlstates, raised.value
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