io.netty.handler.codec.memcache.binary.BinaryMemcacheClientCodec Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including
all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and
Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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:
*
* 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 io.netty.handler.codec.memcache.binary;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.CombinedChannelDuplexHandler;
import io.netty.handler.codec.PrematureChannelClosureException;
import io.netty.handler.codec.memcache.LastMemcacheContent;
import io.netty.util.internal.UnstableApi;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
/**
* The client codec that combines the proper encoder and decoder.
*
* Use this codec if you want to implement a memcache client that speaks the binary protocol. It
* combines both the {@link BinaryMemcacheResponseDecoder} and the {@link BinaryMemcacheRequestEncoder}.
*
* Optionally, it counts the number of outstanding responses and raises an exception if - on connection
* close - the list is not 0 (this is turned off by default). You can also define a chunk size for the
* content, which defaults to 8192. This chunk size is the maximum, so if smaller chunks arrive they
* will be passed up the pipeline and not queued up to the chunk size.
*/
@UnstableApi
public final class BinaryMemcacheClientCodec extends
CombinedChannelDuplexHandler {
private final boolean failOnMissingResponse;
private final AtomicLong requestResponseCounter = new AtomicLong();
/**
* Create a new {@link BinaryMemcacheClientCodec} with the default settings applied.
*/
public BinaryMemcacheClientCodec() {
this(AbstractBinaryMemcacheDecoder.DEFAULT_MAX_CHUNK_SIZE);
}
/**
* Create a new {@link BinaryMemcacheClientCodec} and set a custom chunk size.
*
* @param decodeChunkSize the maximum chunk size.
*/
public BinaryMemcacheClientCodec(int decodeChunkSize) {
this(decodeChunkSize, false);
}
/**
* Create a new {@link BinaryMemcacheClientCodec} with custom settings.
*
* @param decodeChunkSize the maximum chunk size.
* @param failOnMissingResponse report if after close there are outstanding requests.
*/
public BinaryMemcacheClientCodec(int decodeChunkSize, boolean failOnMissingResponse) {
this.failOnMissingResponse = failOnMissingResponse;
init(new Decoder(decodeChunkSize), new Encoder());
}
private final class Encoder extends BinaryMemcacheRequestEncoder {
@Override
protected void encode(ChannelHandlerContext ctx, Object msg, List
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