| /** |
| * 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.mina; |
| |
| import java.nio.charset.CharacterCodingException; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetEncoder; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.NoTypeConversionAvailableException; |
| import org.apache.mina.common.ByteBuffer; |
| import org.apache.mina.common.IoSession; |
| import org.apache.mina.filter.codec.ProtocolCodecFactory; |
| import org.apache.mina.filter.codec.ProtocolDecoder; |
| import org.apache.mina.filter.codec.ProtocolDecoderOutput; |
| import org.apache.mina.filter.codec.ProtocolEncoder; |
| import org.apache.mina.filter.codec.ProtocolEncoderOutput; |
| |
| /** |
| * @version |
| */ |
| public class MinaUdpProtocolCodecFactory implements ProtocolCodecFactory { |
| |
| private final Charset charset; |
| private final CamelContext context; |
| |
| public MinaUdpProtocolCodecFactory(CamelContext context, Charset charset) { |
| this.context = context; |
| this.charset = charset; |
| } |
| |
| public ProtocolEncoder getEncoder() throws Exception { |
| return new ProtocolEncoder() { |
| private CharsetEncoder encoder; |
| |
| public void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception { |
| if (encoder == null) { |
| encoder = charset.newEncoder(); |
| } |
| ByteBuffer buf = toByteBuffer(message, encoder); |
| buf.flip(); |
| out.write(buf); |
| } |
| |
| public void dispose(IoSession session) throws Exception { |
| // do nothing |
| } |
| }; |
| } |
| |
| public ProtocolDecoder getDecoder() throws Exception { |
| return new ProtocolDecoder() { |
| public void decode(IoSession session, ByteBuffer in, ProtocolDecoderOutput out) throws Exception { |
| // convert to bytes to write, we can not pass in the byte buffer as it could be sent to |
| // multiple mina sessions so we must convert it to bytes |
| byte[] bytes = context.getTypeConverter().convertTo(byte[].class, in); |
| out.write(bytes); |
| } |
| |
| public void finishDecode(IoSession session, ProtocolDecoderOutput out) throws Exception { |
| // do nothing |
| } |
| |
| public void dispose(IoSession session) throws Exception { |
| // do nothing |
| } |
| }; |
| } |
| |
| private ByteBuffer toByteBuffer(Object message, CharsetEncoder encoder) |
| throws CharacterCodingException, NoTypeConversionAvailableException { |
| String value = context.getTypeConverter().convertTo(String.class, message); |
| if (value != null) { |
| ByteBuffer answer = ByteBuffer.allocate(value.length()).setAutoExpand(false); |
| answer.putString(value, encoder); |
| return answer; |
| } |
| |
| // failback to use a byte buffer converter |
| return context.getTypeConverter().mandatoryConvertTo(ByteBuffer.class, message); |
| } |
| |
| } |