| /* |
| * 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.distributed.dht; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| import org.apache.ignite.internal.GridDirectTransient; |
| import org.apache.ignite.internal.util.GridUnsafe; |
| import org.apache.ignite.plugin.extensions.communication.Message; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| |
| /** |
| * Partition update counters message. |
| */ |
| public class PartitionUpdateCountersMessage implements Message { |
| /** */ |
| private static final int ITEM_SIZE = 4 /* partition */ + 8 /* initial counter */ + 8 /* updates count */; |
| |
| /** */ |
| private static final long serialVersionUID = 193442457510062844L; |
| |
| /** */ |
| private byte data[]; |
| |
| /** */ |
| private int cacheId; |
| |
| /** */ |
| @GridDirectTransient |
| private int size; |
| |
| /** */ |
| public PartitionUpdateCountersMessage() { |
| // No-op. |
| } |
| |
| /** |
| * @param cacheId Cache id. |
| * @param initSize Initial size. |
| */ |
| public PartitionUpdateCountersMessage(int cacheId, int initSize) { |
| assert initSize >= 1; |
| |
| this.cacheId = cacheId; |
| data = new byte[initSize * ITEM_SIZE]; |
| } |
| |
| /** |
| * @return Cache id. |
| */ |
| public int cacheId() { |
| return cacheId; |
| } |
| |
| /** |
| * @return Size. |
| */ |
| public int size() { |
| return size; |
| } |
| |
| /** |
| * @param idx Item number. |
| * @return Partition number. |
| */ |
| public int partition(int idx) { |
| if (idx >= size) |
| throw new ArrayIndexOutOfBoundsException(); |
| |
| long off = GridUnsafe.BYTE_ARR_OFF + idx * ITEM_SIZE; |
| |
| return GridUnsafe.getInt(data, off); |
| } |
| |
| /** |
| * @param idx Item number. |
| * @return Partition number. |
| */ |
| public long initialCounter(int idx){ |
| if (idx >= size) |
| throw new ArrayIndexOutOfBoundsException(); |
| |
| long off = GridUnsafe.BYTE_ARR_OFF + idx * ITEM_SIZE + 4; |
| |
| return GridUnsafe.getLong(data, off); |
| } |
| |
| /** |
| * @param idx Item number. |
| * @param value Initial partition counter. |
| */ |
| public void initialCounter(int idx, long value){ |
| if (idx >= size) |
| throw new ArrayIndexOutOfBoundsException(); |
| |
| long off = GridUnsafe.BYTE_ARR_OFF + idx * ITEM_SIZE + 4; |
| |
| GridUnsafe.putLong(data, off, value); |
| } |
| |
| /** |
| * @param idx Item number. |
| * @return Update counter delta. |
| */ |
| public long updatesCount(int idx){ |
| if (idx >= size) |
| throw new ArrayIndexOutOfBoundsException(); |
| |
| long off = GridUnsafe.BYTE_ARR_OFF + idx * ITEM_SIZE + 12; |
| |
| return GridUnsafe.getLong(data, off); |
| } |
| |
| /** |
| * @param part Partition number. |
| * @param init Init partition counter. |
| * @param updatesCnt Update counter delta. |
| */ |
| public void add(int part, long init, long updatesCnt) { |
| ensureSpace(size + 1); |
| |
| long off = GridUnsafe.BYTE_ARR_OFF + size++ * ITEM_SIZE; |
| |
| GridUnsafe.putInt(data, off, part); off += 4; |
| GridUnsafe.putLong(data, off, init); off += 8; |
| GridUnsafe.putLong(data, off, updatesCnt); |
| } |
| |
| /** |
| * Clears message. |
| */ |
| public void clear() { |
| size = 0; |
| } |
| |
| /** |
| * Check if there is enough space is allocated. |
| * |
| * @param newSize Size to ensure. |
| */ |
| private void ensureSpace(int newSize) { |
| int req = newSize * ITEM_SIZE; |
| |
| if (data.length < req) |
| data = Arrays.copyOf(data, data.length << 1); |
| } |
| |
| /** {@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("cacheId", cacheId)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 1: |
| if (!writer.writeByteArray("data", data, 0, size * ITEM_SIZE)) |
| 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: |
| cacheId = reader.readInt("cacheId"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 1: |
| data = reader.readByteArray("data"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| size = data.length / ITEM_SIZE; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(PartitionUpdateCountersMessage.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 157; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 2; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| // No-op. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| |
| for (int i = 0; i < size; i++) { |
| sb.append("[part=") |
| .append(partition(i)) |
| .append(", initCntr=") |
| .append(initialCounter(i)) |
| .append(", cntr=") |
| .append(updatesCount(i)) |
| .append(']'); |
| } |
| |
| return "PartitionUpdateCountersMessage{" + |
| "cacheId=" + cacheId + |
| ", size=" + size + |
| ", cntrs=" + sb + |
| '}'; |
| } |
| } |