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How to use test_connection_error method in locust

Best Python code snippet using locust

test_connection.py

Source:test_connection.py

1# Licensed to the Apache Software Foundation (ASF) under one2# or more contributor license agreements.  See the NOTICE file3# distributed with this work for additional information4# regarding copyright ownership.  The ASF licenses this file5# to you under the Apache License, Version 2.0 (the6# "License"); you may not use this file except in compliance7# with the License.  You may obtain a copy of the License at8#9#   http://www.apache.org/licenses/LICENSE-2.010#11# Unless required by applicable law or agreed to in writing,12# software distributed under the License is distributed on an13# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY14# KIND, either express or implied.  See the License for the15# specific language governing permissions and limitations16# under the License.17import logging18import sqlite319from contextlib import closing20from typing import Any, Dict, Optional21from flask import current_app as app22from flask_appbuilder.security.sqla.models import User23from flask_babel import gettext as _24from func_timeout import func_timeout, FunctionTimedOut25from sqlalchemy.engine.url import make_url26from sqlalchemy.exc import DBAPIError, NoSuchModuleError27from superset.commands.base import BaseCommand28from superset.databases.commands.exceptions import (29    DatabaseSecurityUnsafeError,30    DatabaseTestConnectionDriverError,31    DatabaseTestConnectionFailedError,32    DatabaseTestConnectionUnexpectedError,33)34from superset.databases.dao import DatabaseDAO35from superset.errors import ErrorLevel, SupersetErrorType36from superset.exceptions import SupersetSecurityException, SupersetTimeoutException37from superset.extensions import event_logger38from superset.models.core import Database39logger = logging.getLogger(__name__)40class TestConnectionDatabaseCommand(BaseCommand):41    def __init__(self, user: User, data: Dict[str, Any]):42        self._actor = user43        self._properties = data.copy()44        self._model: Optional[Database] = None45    def run(self) -> None:46        self.validate()47        uri = self._properties.get("sqlalchemy_uri", "")48        if self._model and uri == self._model.safe_sqlalchemy_uri():49            uri = self._model.sqlalchemy_uri_decrypted50        # context for error messages51        url = make_url(uri)52        context = {53            "hostname": url.host,54            "password": url.password,55            "port": url.port,56            "username": url.username,57            "database": url.database,58        }59        try:60            database = DatabaseDAO.build_db_for_connection_test(61                server_cert=self._properties.get("server_cert", ""),62                extra=self._properties.get("extra", "{}"),63                impersonate_user=self._properties.get("impersonate_user", False),64                encrypted_extra=self._properties.get("encrypted_extra", "{}"),65            )66            database.set_sqlalchemy_uri(uri)67            database.db_engine_spec.mutate_db_for_connection_test(database)68            username = self._actor.username if self._actor is not None else None69            engine = database.get_sqla_engine(user_name=username)70            event_logger.log_with_context(71                action="test_connection_attempt",72                engine=database.db_engine_spec.__name__,73            )74            with closing(engine.raw_connection()) as conn:75                try:76                    alive = func_timeout(77                        int(78                            app.config[79                                "TEST_DATABASE_CONNECTION_TIMEOUT"80                            ].total_seconds()81                        ),82                        engine.dialect.do_ping,83                        args=(conn,),84                    )85                except sqlite3.ProgrammingError:86                    # SQLite can't run on a separate thread, so ``func_timeout`` fails87                    alive = engine.dialect.do_ping(conn)88                except FunctionTimedOut as ex:89                    raise SupersetTimeoutException(90                        error_type=SupersetErrorType.CONNECTION_DATABASE_TIMEOUT,91                        message=(92                            "Please check your connection details and database settings, "93                            "and ensure that your database is accepting connections, "94                            "then try connecting again."95                        ),96                        level=ErrorLevel.ERROR,97                        extra={"sqlalchemy_uri": database.sqlalchemy_uri},98                    ) from ex99                except Exception:  # pylint: disable=broad-except100                    alive = False101                if not alive:102                    raise DBAPIError(None, None, None)103            # Log succesful connection test with engine104            event_logger.log_with_context(105                action="test_connection_success",106                engine=database.db_engine_spec.__name__,107            )108        except (NoSuchModuleError, ModuleNotFoundError) as ex:109            event_logger.log_with_context(110                action=f"test_connection_error.{ex.__class__.__name__}",111                engine=database.db_engine_spec.__name__,112            )113            raise DatabaseTestConnectionDriverError(114                message=_("Could not load database driver: {}").format(115                    database.db_engine_spec.__name__116                ),117            ) from ex118        except DBAPIError as ex:119            event_logger.log_with_context(120                action=f"test_connection_error.{ex.__class__.__name__}",121                engine=database.db_engine_spec.__name__,122            )123            # check for custom errors (wrong username, wrong password, etc)124            errors = database.db_engine_spec.extract_errors(ex, context)125            raise DatabaseTestConnectionFailedError(errors) from ex126        except SupersetSecurityException as ex:127            event_logger.log_with_context(128                action=f"test_connection_error.{ex.__class__.__name__}",129                engine=database.db_engine_spec.__name__,130            )131            raise DatabaseSecurityUnsafeError(message=str(ex)) from ex132        except SupersetTimeoutException as ex:133            event_logger.log_with_context(134                action=f"test_connection_error.{ex.__class__.__name__}",135                engine=database.db_engine_spec.__name__,136            )137            # bubble up the exception to return a 408138            raise ex139        except Exception as ex:140            event_logger.log_with_context(141                action=f"test_connection_error.{ex.__class__.__name__}",142                engine=database.db_engine_spec.__name__,143            )144            errors = database.db_engine_spec.extract_errors(ex, context)145            raise DatabaseTestConnectionUnexpectedError(errors) from ex146    def validate(self) -> None:147        database_name = self._properties.get("database_name")148        if database_name is not None:...

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