| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * 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. |
| */ |
| package org.apache.ratis.server; |
| |
| import org.apache.ratis.protocol.ClientInvocationId; |
| import org.apache.ratis.statemachine.StateMachine.DataStream; |
| |
| import java.util.concurrent.CompletableFuture; |
| import java.util.function.Function; |
| |
| /** A {@link ClientInvocationId}-to-{@link DataStream} map. */ |
| public interface DataStreamMap { |
| /** Similar to {@link java.util.Map#computeIfAbsent(Object, Function)}. */ |
| CompletableFuture<DataStream> computeIfAbsent(ClientInvocationId invocationId, |
| Function<ClientInvocationId, CompletableFuture<DataStream>> newDataStream); |
| |
| /** Similar to {@link java.util.Map#remove(java.lang.Object). */ |
| CompletableFuture<DataStream> remove(ClientInvocationId invocationId); |
| } |