1

Google App Engine と Cloud SQL で SQLAlchemy 0.8 を使用しています。デプロイする前に完全な統合テストをローカルで実行したいのですが、mysql+gaerdbms ダイアレクトを使用して SQLAlchemy を開発中の MySQL サーバーに接続できません。

create_engine(
    'mysql+gaerdbms:///test?instance=homingbox:instance1'
)

次のようにコマンドラインからアプリエンジンを起動します

python dev_appserver.py --mysql_user=username --mysql_password=root ../Source/HomingBox/gae

データベースにアクセスしようとすると、この素敵なスタック トレースが表示されます

ERROR    2013-04-22 21:35:39,987 webapp2.py:1528] (ImportError)  None None
Traceback (most recent call last):
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 1511, in __call__
    rv = self.handle_exception(request, response, e)
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 1505, in __call__
    rv = self.router.dispatch(request, response)
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 1077, in __call__
    return handler.dispatch()
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 547, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/home/leon/Development/google_appengine/lib/webapp2-2.3/webapp2.py", line 545, in dispatch
    return method(*args, **kwargs)
  File "/home/leon/Development/Source/HomingBox/gae/rest.py", line 19, in get_list
    self.response.write(json.dumps(application.get_list()))
  File "/home/leon/Development/Source/HomingBox/gae/dal.py", line 98, in get_list
    return query.all()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/query.py", line 2140, in all
    return list(self)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/query.py", line 2252, in __iter__
    return self._execute_and_instances(context)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/query.py", line 2265, in _execute_and_instances
    close_with_result=True)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/query.py", line 2256, in _connection_from_session
    **kw)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/session.py", line 797, in connection
    close_with_result=close_with_result)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/session.py", line 801, in _connection_for_bind
    return self.transaction._connection_for_bind(engine)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/orm/session.py", line 297, in _connection_for_bind
    conn = bind.contextual_connect()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/engine/base.py", line 1669, in contextual_connect
    self.pool.connect(),
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 272, in connect
    return _ConnectionFairy(self).checkout()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 425, in __init__
    rec = self._connection_record = pool._do_get()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 855, in _do_get
    return self._create_connection()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 225, in _create_connection
    return _ConnectionRecord(self)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 318, in __init__
    self.connection = self.__connect()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/pool.py", line 368, in __connect
    connection = self.__pool._creator()
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/engine/strategies.py", line 80, in connect
    return dialect.connect(*cargs, **cparams)
  File "/home/leon/Development/Source/HomingBox/gae/sqlalchemy/engine/default.py", line 279, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/home/leon/Development/google_appengine/google/storage/speckle/python/api/rdbms_googleapi.py", line 183, in __init__
    super(GoogleApiConnection, self).__init__(*args, **kwargs)
  File "/home/leon/Development/google_appengine/google/storage/speckle/python/api/rdbms.py", line 810, in __init__
    self.OpenConnection()
  File "/home/leon/Development/google_appengine/google/storage/speckle/python/api/rdbms.py", line 832, in OpenConnection
    self.SetupClient()
  File "/home/leon/Development/google_appengine/google/storage/speckle/python/api/rdbms_googleapi.py", line 193, in SetupClient
    self._client = RdbmsGoogleApiClient(**kwargs)
  File "/home/leon/Development/google_appengine/google/storage/speckle/python/api/rdbms_googleapi.py", line 106, in __init__
    rdbms.OAUTH_CREDENTIALS_PATH)
  File "/usr/lib/python2.7/posixpath.py", line 268, in expanduser
    import pwd
  File "/home/leon/Development/google_appengine/google/appengine/tools/devappserver2/python/sandbox.py", line 827, in load_module
    raise ImportError

どんな助けでも大歓迎です

4

1 に答える 1

1

スタック トレースに基づく私の仮説は次のとおりです。アプリケーションが HOME ディレクトリを見つけられない場合、アプリケーションは pwd をインポートし、その方法でホーム ディレクトリ情報を取得しようとします。アプリケーションは、posixpath.py で次のコードを呼び出そうとしています。

if 'HOME' not in os.environ:
        import pwd
        userhome = pwd.getpwuid(os.getuid()).pw_dir
    else:
        userhome = os.environ['HOME']

ただし、 GAE はセキュリティ上の理由から pwd のインポートを許可しないと思います。サンドボックス環境は、許可されたモジュールのホワイトリストに含まれているようには見えずImportError、モジュールがそのリストにない場合に発生します。

import pwd通常のハンドラー モジュールの内部だけを実行しようとすると、GAE はそれを許可しません。

于 2013-04-23T14:35:16.090 に答える