modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/messages/TcpDiscoveryCustomEventMessage.java

/*
 * 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.spi.discovery.tcp.messages;

import java.util.UUID;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.internal.util.typedef.internal.S;
import org.apache.ignite.marshaller.Marshaller;
import org.apache.ignite.spi.discovery.DiscoverySpiCustomMessage;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * Wrapped for custom message.
 */
@TcpDiscoveryRedirectToClient
@TcpDiscoveryEnsureDelivery
public class TcpDiscoveryCustomEventMessage extends TcpDiscoveryAbstractMessage {
    /** */
    private static final long serialVersionUID = 0L;

    /** */
    private transient volatile DiscoverySpiCustomMessage msg;

    /** */
    private byte[] msgBytes;

    /**
     * @param creatorNodeId Creator node id.
     * @param msg Message.
     * @param msgBytes Serialized message.
     */
    public TcpDiscoveryCustomEventMessage(UUID creatorNodeId, @Nullable DiscoverySpiCustomMessage msg,
        @NotNull byte[] msgBytes) {
        super(creatorNodeId);

        this.msg = msg;
        this.msgBytes = msgBytes;
    }

    /**
     * @return Serialized message.
     */
    public byte[] messageBytes() {
        return msgBytes;
    }

    /**
     * @param msg Message.
     * @param msgBytes Serialized message.
     */
    public void message(@Nullable DiscoverySpiCustomMessage msg, @NotNull byte[] msgBytes) {
        this.msg = msg;
        this.msgBytes = msgBytes;
    }

    /**
     * @return Deserialized message,
     * @throws java.lang.Throwable if unmarshal failed.
     */
    @Nullable public DiscoverySpiCustomMessage message(@NotNull Marshaller marsh) throws Throwable {
        return message(marsh, null);
    }

    /**
     * @return Deserialized message,
     * @throws java.lang.Throwable if unmarshal failed.
     */
    @Nullable public DiscoverySpiCustomMessage message(@NotNull Marshaller marsh, ClassLoader ldr) throws Throwable {
        if (msg == null) {
            msg = marsh.unmarshal(msgBytes, ldr);

            assert msg != null;
        }

        return msg;
    }

    /** {@inheritDoc} */
    @Override public boolean equals(Object obj) {
        return super.equals(obj) &&
            obj instanceof TcpDiscoveryCustomEventMessage &&
            F.eq(
                ((TcpDiscoveryCustomEventMessage)obj).verifierNodeId(),
                verifierNodeId());
    }

    /** {@inheritDoc} */
    @Override public String toString() {
        return S.toString(TcpDiscoveryCustomEventMessage.class, this, "super", super.toString());
    }
}