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65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import logging
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from datetime import datetime, timedelta
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from functools import partial
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from flask import current_app as app
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from sqlalchemy.exc import SQLAlchemyError
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from superset.commands.distributed_lock.base import BaseDistributedLockCommand
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from superset.daos.key_value import KeyValueDAO
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from superset.exceptions import CreateKeyValueDistributedLockFailedException
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from superset.key_value.exceptions import (
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KeyValueCodecEncodeException,
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KeyValueUpsertFailedError,
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)
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from superset.key_value.types import KeyValueResource
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from superset.utils.decorators import on_error, transaction
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logger = logging.getLogger(__name__)
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stats_logger = app.config["STATS_LOGGER"]
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class CreateDistributedLock(BaseDistributedLockCommand):
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lock_expiration = timedelta(seconds=30)
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def validate(self) -> None:
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pass
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@transaction(
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on_error=partial(
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on_error,
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catches=(
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KeyValueCodecEncodeException,
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KeyValueUpsertFailedError,
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SQLAlchemyError,
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),
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reraise=CreateKeyValueDistributedLockFailedException,
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),
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)
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def run(self) -> None:
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KeyValueDAO.delete_expired_entries(self.resource)
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KeyValueDAO.create_entry(
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resource=KeyValueResource.LOCK,
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value={"value": True},
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codec=self.codec,
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key=self.key,
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expires_on=datetime.now() + self.lock_expiration,
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)
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