/**
* 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.camel.component.netty4;
import java.nio.charset.Charset;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.serialization.ClassResolvers;
import io.netty.handler.codec.serialization.ObjectDecoder;
import io.netty.handler.codec.serialization.ObjectEncoder;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import org.apache.camel.component.netty4.codec.DatagramPacketDecoder;
import org.apache.camel.component.netty4.codec.DatagramPacketDelimiterDecoder;
import org.apache.camel.component.netty4.codec.DatagramPacketEncoder;
import org.apache.camel.component.netty4.codec.DatagramPacketObjectDecoder;
import org.apache.camel.component.netty4.codec.DatagramPacketObjectEncoder;
import org.apache.camel.component.netty4.codec.DatagramPacketStringDecoder;
import org.apache.camel.component.netty4.codec.DatagramPacketStringEncoder;
/**
* Helper to create commonly used {@link ChannelHandlerFactory} instances.
*/
public final class ChannelHandlerFactories {
private ChannelHandlerFactories() {
}
public static ChannelHandlerFactory newStringEncoder(Charset charset, String protocol) {
if ("udp".equalsIgnoreCase(protocol)) {
return new ShareableChannelHandlerFactory(new DatagramPacketStringEncoder(charset));
} else {
return new ShareableChannelHandlerFactory(new StringEncoder(charset));
}
}
public static ChannelHandlerFactory newStringDecoder(Charset charset, String protocol) {
if ("udp".equalsIgnoreCase(protocol)) {
return new ShareableChannelHandlerFactory(new DatagramPacketStringDecoder(charset));
} else {
return new ShareableChannelHandlerFactory(new StringDecoder(charset));
}
}
public static ChannelHandlerFactory newObjectDecoder(String protocol) {
if ("udp".equalsIgnoreCase(protocol)) {
return new DefaultChannelHandlerFactory() {
@Override
public ChannelHandler newChannelHandler() {
return new DatagramPacketObjectDecoder(ClassResolvers.weakCachingResolver(null));
}
};
} else {
return new DefaultChannelHandlerFactory() {
@Override
public ChannelHandler newChannelHandler() {
return new ObjectDecoder(ClassResolvers.weakCachingResolver(null));
}
};
}
}
public static ChannelHandlerFactory newObjectEncoder(String protocol) {
if ("udp".equals(protocol)) {
return new ShareableChannelHandlerFactory(new DatagramPacketObjectEncoder());
} else {
return new ShareableChannelHandlerFactory(new ObjectEncoder());
}
}
public static ChannelHandlerFactory newDelimiterBasedFrameDecoder(final int maxFrameLength, final ByteBuf[] delimiters, String protocol) {
if ("udp".equals(protocol)) {
return new DefaultChannelHandlerFactory() {
@Override
public ChannelHandler newChannelHandler() {
return new DatagramPacketDelimiterDecoder(maxFrameLength, delimiters);
}
};
} else {
return new DefaultChannelHandlerFactory() {
@Override
public ChannelHandler newChannelHandler() {
return new DelimiterBasedFrameDecoder(maxFrameLength, true, delimiters);
}
};
}
}
public static ChannelHandlerFactory newDatagramPacketDecoder() {
return new ShareableChannelHandlerFactory(new DatagramPacketDecoder());
}
public static ChannelHandlerFactory newDatagramPacketEncoder() {
return new ShareableChannelHandlerFactory(new DatagramPacketEncoder());
}
public static ChannelHandlerFactory newLengthFieldBasedFrameDecoder(final int maxFrameLength, final int lengthFieldOffset,
final int lengthFieldLength, final int lengthAdjustment,
final int initialBytesToStrip) {
return new DefaultChannelHandlerFactory() {
@Override
public ChannelHandler newChannelHandler() {
return new LengthFieldBasedFrameDecoder(maxFrameLength, lengthFieldOffset, lengthFieldLength, lengthAdjustment, initialBytesToStrip);
}
};
}
}