/* * 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.plugin.extensions.communication; import org.apache.ignite.plugin.Extension; import org.jetbrains.annotations.Nullable; /** * Factory for communication messages. * <p> * A plugin can provide his own message factory as an extension * if it uses any custom messages (all message must extend * {@link Message} class). */ public interface MessageFactory extends Extension { /** * Creates new message instance of provided type. * <p> * This method should return {@code null} if provided message type * is unknown to this factory. * * @param type Message type. * @return Message instance. */ @Nullable public Message create(short type); }