modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterMetricsUpdateMessage.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.internal.processors.cluster;

import java.nio.ByteBuffer;
import java.util.Map;
import java.util.UUID;
import org.apache.ignite.internal.GridDirectMap;
import org.apache.ignite.internal.managers.communication.GridIoMessageFactory;
import org.apache.ignite.internal.util.typedef.internal.S;
import org.apache.ignite.plugin.extensions.communication.Message;
import org.apache.ignite.plugin.extensions.communication.MessageCollectionItemType;
import org.apache.ignite.plugin.extensions.communication.MessageReader;
import org.apache.ignite.plugin.extensions.communication.MessageWriter;
import org.jetbrains.annotations.Nullable;

/**
 *
 */
public class ClusterMetricsUpdateMessage implements Message {
    /** */
    private static final long serialVersionUID = 0L;

    /** */
    private byte[] nodeMetrics;

    /** */
    @GridDirectMap(keyType = UUID.class, valueType = byte[].class)
    private Map<UUID, byte[]> allNodesMetrics;

    /**
     * Required by {@link GridIoMessageFactory}.
     */
    public ClusterMetricsUpdateMessage() {
        // No-op.
    }

    /**
     * @param nodeMetrics Node metrics.
     */
    ClusterMetricsUpdateMessage(byte[] nodeMetrics) {
        this.nodeMetrics = nodeMetrics;
    }

    /**
     * @param allNodesMetrics All nodes metrcis.
     */
    ClusterMetricsUpdateMessage(Map<UUID, byte[]> allNodesMetrics) {
        this.allNodesMetrics = allNodesMetrics;
    }

    /**
     * @return Node metrics.
     */
    @Nullable byte[] nodeMetrics() {
        return nodeMetrics;
    }

    /**
     * @return All nodes metrics.
     */
    @Nullable Map<UUID, byte[]> allNodesMetrics() {
        return allNodesMetrics;
    }

    /** {@inheritDoc} */
    @Override public boolean writeTo(ByteBuffer buf, MessageWriter writer) {
        writer.setBuffer(buf);

        if (!writer.isHeaderWritten()) {
            if (!writer.writeHeader(directType(), fieldsCount()))
                return false;

            writer.onHeaderWritten();
        }

        switch (writer.state()) {
            case 0:
                if (!writer.writeMap("allNodesMetrics", allNodesMetrics, MessageCollectionItemType.UUID, MessageCollectionItemType.BYTE_ARR))
                    return false;

                writer.incrementState();

            case 1:
                if (!writer.writeByteArray("nodeMetrics", nodeMetrics))
                    return false;

                writer.incrementState();

        }

        return true;
    }

    /** {@inheritDoc} */
    @Override public boolean readFrom(ByteBuffer buf, MessageReader reader) {
        reader.setBuffer(buf);

        if (!reader.beforeMessageRead())
            return false;

        switch (reader.state()) {
            case 0:
                allNodesMetrics = reader.readMap("allNodesMetrics", MessageCollectionItemType.UUID, MessageCollectionItemType.BYTE_ARR, false);

                if (!reader.isLastRead())
                    return false;

                reader.incrementState();

            case 1:
                nodeMetrics = reader.readByteArray("nodeMetrics");

                if (!reader.isLastRead())
                    return false;

                reader.incrementState();

        }

        return reader.afterMessageRead(ClusterMetricsUpdateMessage.class);
    }

    /** {@inheritDoc} */
    @Override public short directType() {
        return 133;
    }

    /** {@inheritDoc} */
    @Override public byte fieldsCount() {
        return 2;
    }

    /** {@inheritDoc} */
    @Override public void onAckReceived() {
        // No-op.
    }

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