airbnb/caravel

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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
import logging
from functools import partial
from typing import Optional

from superset import is_feature_enabled
from superset.commands.base import BaseCommand
from superset.commands.database.ssh_tunnel.exceptions import (
    SSHTunnelDeleteFailedError,
    SSHTunnelingNotEnabledError,
    SSHTunnelNotFoundError,
)
from superset.daos.database import SSHTunnelDAO
from superset.databases.ssh_tunnel.models import SSHTunnel
from superset.utils.decorators import on_error, transaction

logger = logging.getLogger(__name__)


class DeleteSSHTunnelCommand(BaseCommand):
    def __init__(self, model_id: int):
        self._model_id = model_id
        self._model: Optional[SSHTunnel] = None

    @transaction(on_error=partial(on_error, reraise=SSHTunnelDeleteFailedError))
    def run(self) -> None:
        if not is_feature_enabled("SSH_TUNNELING"):
            raise SSHTunnelingNotEnabledError()
        self.validate()
        assert self._model
        SSHTunnelDAO.delete([self._model])

    def validate(self) -> None:
        # Validate/populate model exists
        self._model = SSHTunnelDAO.find_by_id(self._model_id)
        if not self._model:
            raise SSHTunnelNotFoundError()