/* * Copyright (C) 2022 The Android Open Source Project * * 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. */ package com.android.libraries.pcc.chronicle.api /** * A [ConnectionProvider] is capable of providing [Connection]s to data. * * For each type of data a [ConnectionProvider] provides connections to, it also must supply * [Chronicle] with information about the capabilities of the storage of said data (See * [ManagedDataType] and [ManagementStrategy]). */ interface ConnectionProvider { val dataType: DataType /** Builds and returns a connection of the provided [connectionRequest]. */ fun getConnection(connectionRequest: ConnectionRequest): Connection @Suppress("UNCHECKED_CAST") fun getTypedConnection(connectionRequest: ConnectionRequest): T { return requireNotNull(getConnection(connectionRequest) as? T) { "Returned connection could not be cast to $connectionRequest" } } }