| /* |
| * 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; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.nio.ByteBuffer; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.GridDirectTransient; |
| import org.apache.ignite.internal.pagemem.PageUtils; |
| import org.apache.ignite.internal.util.tostring.GridToStringInclude; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| |
| /** |
| * |
| */ |
| public abstract class CacheObjectAdapter implements CacheObject, Externalizable { |
| /** */ |
| private static final long serialVersionUID = 2006765505127197251L; |
| |
| /** */ |
| @GridToStringInclude(sensitive = true) |
| @GridDirectTransient |
| protected Object val; |
| |
| /** */ |
| protected byte[] valBytes; |
| |
| /** |
| * @param ctx Context. |
| * @return {@code True} need to copy value returned to user. |
| */ |
| protected boolean needCopy(CacheObjectValueContext ctx) { |
| return ctx.copyOnGet() && val != null && !ctx.kernalContext().cacheObjects().immutable(val); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte cacheObjectType() { |
| return TYPE_REGULAR; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeExternal(ObjectOutput out) throws IOException { |
| assert valBytes != null; |
| |
| U.writeByteArray(out, valBytes); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| valBytes = U.readByteArray(in); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean putValue(ByteBuffer buf) throws IgniteCheckedException { |
| assert valBytes != null : "Value bytes must be initialized before object is stored"; |
| |
| return putValue(buf, 0, objectPutSize(valBytes.length)); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int putValue(long addr) throws IgniteCheckedException { |
| assert valBytes != null : "Value bytes must be initialized before object is stored"; |
| |
| return putValue(addr, cacheObjectType(), valBytes); |
| } |
| |
| /** |
| * @param addr Write address. |
| * @param type Object type. |
| * @param valBytes Value bytes array. |
| * @return Offset shift compared to initial address. |
| */ |
| public static int putValue(long addr, byte type, byte[] valBytes) { |
| return putValue(addr, type, valBytes, 0, valBytes.length); |
| } |
| |
| /** |
| * @param addr Write address. |
| * @param type Object type. |
| * @param srcBytes Source value bytes array. |
| * @param srcOff Start position in sourceBytes. |
| * @param len Number of bytes for write. |
| * @return Offset shift compared to initial address. |
| */ |
| public static int putValue(long addr, byte type, byte[] srcBytes, int srcOff, int len) { |
| int off = 0; |
| |
| PageUtils.putInt(addr, off, len); |
| off += 4; |
| |
| PageUtils.putByte(addr, off, type); |
| off++; |
| |
| PageUtils.putBytes(addr, off, srcBytes, srcOff, len); |
| off += len; |
| |
| return off; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean putValue(final ByteBuffer buf, int off, int len) throws IgniteCheckedException { |
| assert valBytes != null : "Value bytes must be initialized before object is stored"; |
| |
| return putValue(cacheObjectType(), buf, off, len, valBytes, 0); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int valueBytesLength(CacheObjectContext ctx) throws IgniteCheckedException { |
| if (valBytes == null) |
| valueBytes(ctx); |
| |
| return objectPutSize(valBytes.length); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean readFrom(ByteBuffer buf, MessageReader reader) { |
| reader.setBuffer(buf); |
| |
| if (!reader.beforeMessageRead()) |
| return false; |
| |
| switch (reader.state()) { |
| case 0: |
| valBytes = reader.readByteArray("valBytes"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(CacheObjectAdapter.class); |
| } |
| |
| /** {@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.writeByteArray("valBytes", valBytes)) |
| return false; |
| |
| writer.incrementState(); |
| |
| } |
| |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 1; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(S.includeSensitive() ? getClass().getSimpleName() : "CacheObject", |
| "val", val, true, |
| "hasValBytes", valBytes != null, false); |
| } |
| |
| /** |
| * @param dataLen Serialized value length. |
| * @return Full size required to store cache object. |
| * @see #putValue(byte, ByteBuffer, int, int, byte[], int) |
| */ |
| public static int objectPutSize(int dataLen) { |
| return dataLen + 5; |
| } |
| |
| /** |
| * @param cacheObjType Cache object type. |
| * @param buf Buffer to write value to. |
| * @param off Offset in source binary data. |
| * @param len Length of the data to write. |
| * @param valBytes Binary data. |
| * @param start Start offset in binary data. |
| * @return {@code True} if data were successfully written. |
| * @throws IgniteCheckedException If failed. |
| */ |
| public static boolean putValue(byte cacheObjType, |
| final ByteBuffer buf, |
| int off, |
| int len, |
| byte[] valBytes, |
| final int start |
| ) throws IgniteCheckedException { |
| int dataLen = valBytes.length; |
| |
| if (buf.remaining() < len) |
| return false; |
| |
| final int headSize = 5; // 4 bytes len + 1 byte type |
| |
| if (off == 0 && len >= headSize) { |
| buf.putInt(dataLen); |
| buf.put(cacheObjType); |
| |
| len -= headSize; |
| } |
| else if (off >= headSize) |
| off -= headSize; |
| else { |
| // Partial header write. |
| final ByteBuffer head = ByteBuffer.allocate(headSize); |
| |
| head.order(buf.order()); |
| |
| head.putInt(dataLen); |
| head.put(cacheObjType); |
| |
| head.position(off); |
| |
| if (len < head.capacity()) |
| head.limit(off + Math.min(len, head.capacity() - off)); |
| |
| buf.put(head); |
| |
| if (head.limit() < headSize) |
| return true; |
| |
| len -= headSize - off; |
| off = 0; |
| } |
| |
| buf.put(valBytes, start + off, len); |
| |
| return true; |
| } |
| } |