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- # Copyright 2014-2016 OpenMarket Ltd
- # Copyright 2018,2019 New Vector Ltd
- #
- # 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.
- """
- The storage layer is split up into multiple parts to allow Synapse to run
- against different configurations of databases (e.g. single or multiple
- databases). The `DatabasePool` class represents connections to a single physical
- database. The `databases` are classes that talk directly to a `DatabasePool`
- instance and have associated schemas, background updates, etc.
- On top of the databases are the StorageControllers, located in the
- `synapse.storage.controllers` module. These classes provide high level
- interfaces that combine calls to multiple `databases`. They are bundled into the
- `StorageControllers` singleton for ease of use, and exposed via
- `HomeServer.get_storage_controllers()`.
- There are also schemas that get applied to every database, regardless of the
- data stores associated with them (e.g. the schema version tables), which are
- stored in `synapse.storage.schema`.
- """
- from synapse.storage.databases import Databases
- from synapse.storage.databases.main import DataStore
- __all__ = ["Databases", "DataStore"]
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