| /* |
| * 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.cache.binary; |
| |
| import java.nio.ByteBuffer; |
| import org.apache.ignite.internal.managers.discovery.DiscoveryCustomMessage; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.plugin.extensions.communication.Message; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| |
| /** |
| * As {@link DiscoveryCustomMessage} messages are delivered to client nodes asynchronously |
| * it is possible that server nodes are allowed to send to clients some BinaryObjects clients don't have metadata for. |
| * |
| * When client detects obsolete metadata (by checking if current version of metadata has schemaId) |
| * it requests up-to-date metadata using communication SPI. |
| * |
| * API to make a request is provided by {@link BinaryMetadataTransport#requestUpToDateMetadata(int)} method. |
| */ |
| public class MetadataRequestMessage implements Message { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** */ |
| private int typeId; |
| |
| /** |
| * Default constructor. |
| */ |
| public MetadataRequestMessage() { |
| //No-op. |
| } |
| |
| /** |
| * @param typeId Type ID. |
| */ |
| MetadataRequestMessage(int typeId) { |
| this.typeId = typeId; |
| } |
| |
| /** {@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.writeInt("typeId", typeId)) |
| 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: |
| typeId = reader.readInt("typeId"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(MetadataRequestMessage.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 80; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 1; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| //No-op. |
| } |
| |
| /** */ |
| public int typeId() { |
| return typeId; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(MetadataRequestMessage.class, this); |
| } |
| } |