sashapolo commented on code in PR #5287: URL: https://github.com/apache/ignite-3/pull/5287#discussion_r1971172155
########## modules/partition-replicator/src/main/java/org/apache/ignite/internal/partition/replicator/raft/handlers/CommandHandlers.java: ########## @@ -0,0 +1,90 @@ +/* + * 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.ignite.internal.partition.replicator.raft.handlers; + +import java.util.HashMap; +import java.util.Map; +import org.apache.ignite.internal.raft.WriteCommand; +import org.jetbrains.annotations.Nullable; + +/** + * This class represents a collection of command handlers. + * + * @see AbstractCommandHandler + */ +public class CommandHandlers { + private final Map<MessageId, AbstractCommandHandler<? extends WriteCommand>> handlers = new HashMap<>(); + + /** + * Adds a command handler to the collection. + * + * @param messageGroup Message group identifier. + * @param messageType Message type identifier. + * @param handler Command handler. + */ + public void addHandler(short messageGroup, short messageType, AbstractCommandHandler<?> handler) { + MessageId id = new MessageId(messageGroup, messageType); + + assert !handlers.containsKey(id) : "Handler already exists [messageGroup=" + messageGroup + ", messageType=" + messageType + "]."; + + handlers.put(id, handler); + } + + /** + * Returns a command handler for the specified message group and message type. + * + * @param messageGroup Message group identifier. + * @param messageType Message type identifier. + * @return Command handler. + */ + public @Nullable AbstractCommandHandler<? extends WriteCommand> handler(short messageGroup, short messageType) { Review Comment: ```suggestion public @Nullable AbstractCommandHandler<?> handler(short messageGroup, short messageType) { ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@ignite.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
