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# Copyright 2024-present MongoDB, Inc.
#
# Licensed 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.
from pymongocrypt.mongocrypt import MongoCrypt
from pymongocrypt.synchronous.state_machine import run_state_machine
class AutoEncrypter:
def __init__(self, callback, mongo_crypt_opts):
"""Encrypts and decrypts MongoDB commands.
This class is used by a driver to support automatic encryption and
decryption of MongoDB commands.
:Parameters:
- `callback`: A :class:`MongoCryptCallback`.
- `mongo_crypt_opts`: A :class:`MongoCryptOptions`.
"""
self.callback = callback
self.mongocrypt = MongoCrypt(mongo_crypt_opts, callback)
def encrypt(self, database, cmd):
"""Encrypt a MongoDB command.
:Parameters:
- `database`: The database for this command.
- `cmd`: A MongoDB command as BSON.
:Returns:
The encrypted command.
"""
with self.mongocrypt.encryption_context(database, cmd) as ctx:
return run_state_machine(ctx, self.callback)
def decrypt(self, response):
"""Decrypt a MongoDB command response.
:Parameters:
- `response`: A MongoDB command response as BSON.
:Returns:
The decrypted command response.
"""
with self.mongocrypt.decryption_context(response) as ctx:
return run_state_machine(ctx, self.callback)
def close(self):
"""Cleanup resources."""
self.mongocrypt.close()
self.callback.close()
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