AbstractBinaryMemcacheDecoder.java — netty Source File

Source Code

/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.memcache.binary;

import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.DecoderResult;
import io.netty.handler.codec.memcache.AbstractMemcacheObjectDecoder;
import io.netty.handler.codec.memcache.DefaultLastMemcacheContent;
import io.netty.handler.codec.memcache.DefaultMemcacheContent;
import io.netty.handler.codec.memcache.LastMemcacheContent;
import io.netty.handler.codec.memcache.MemcacheContent;
import io.netty.util.internal.UnstableApi;

import java.util.List;

/**
 * Decoder for both {@link BinaryMemcacheRequest} and {@link BinaryMemcacheResponse}.
 * <p/>
 * The difference in the protocols (header) is implemented by the subclasses.
 */
@UnstableApi
public abstract class AbstractBinaryMemcacheDecoder<M extends BinaryMemcacheMessage>
    extends AbstractMemcacheObjectDecoder {

    public static final int DEFAULT_MAX_CHUNK_SIZE = 8192;

    private final int chunkSize;

    private M currentMessage;
    private int alreadyReadChunkSize;

    private State state = State.READ_HEADER;

    /**
     * Create a new {@link AbstractBinaryMemcacheDecoder} with default settings.
     */
    protected AbstractBinaryMemcacheDecoder() {
        this(DEFAULT_MAX_CHUNK_SIZE);
    }

    /**
     * Create a new {@link AbstractBinaryMemcacheDecoder} with custom settings.
     *
// ... (209 more lines)