Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/transport/MessageDecoder.java @ 28:4b2f23b6feca
Add a schema compatibility check to indexer that parallels storage.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:11:15 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.remote.transport; |
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2 |
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3 import org.apache.mina.filter.codec.ProtocolDecoderOutput; |
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4 import org.apache.mina.filter.codec.CumulativeProtocolDecoder; |
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5 import org.apache.mina.common.IoSession; |
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6 import org.apache.mina.common.ByteBuffer; |
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7 |
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8 /** |
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9 */ |
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10 public class MessageDecoder extends CumulativeProtocolDecoder { |
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11 private int maxObjectSize = MessageCodecFactory.DEFAULT_MAX_OBJECT_SIZE; |
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12 |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
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13 /** |
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14 * Creates a new instance with the {@link ClassLoader} of |
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15 * the current thread. |
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16 */ |
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17 public MessageDecoder() { |
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18 } |
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19 |
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Dan Creswell <dan.creswell@gmail.com>
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20 /** |
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21 * Returns the allowed maximum size of the object to be decoded. |
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22 * If the size of the object to be decoded exceeds this value, this |
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23 * decoder will throw a {@link org.apache.mina.common.BufferDataException}. The default |
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24 * value is <tt>1048576</tt> (1MB). |
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Dan Creswell <dan.creswell@gmail.com>
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25 */ |
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26 public int getMaxObjectSize() { |
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27 return maxObjectSize; |
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28 } |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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29 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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30 /** |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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parents:
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31 * Sets the allowed maximum size of the object to be decoded. |
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32 * If the size of the object to be decoded exceeds this value, this |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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33 * decoder will throw a {@link org.apache.mina.common.BufferDataException}. The default |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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34 * value is <tt>1048576</tt> (1MB). |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
parents:
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35 */ |
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36 public void setMaxObjectSize(int maxObjectSize) { |
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37 if (maxObjectSize <= 0) { |
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38 throw new IllegalArgumentException( |
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39 "maxObjectSize: " + maxObjectSize); |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
parents:
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40 } |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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41 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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42 this.maxObjectSize = maxObjectSize; |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
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43 } |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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44 |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
parents:
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45 protected boolean doDecode(IoSession session, ByteBuffer in, |
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46 ProtocolDecoderOutput out) throws Exception { |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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47 if (!in.prefixedDataAvailable(4, maxObjectSize)) { |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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48 return false; |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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49 } |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
parents:
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50 |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
parents:
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51 /* |
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52 Read length field |
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53 Read conversation id |
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54 Extract payload array |
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55 Construct Message object and post to "out" |
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56 */ |
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57 int myLength = in.getInt(); |
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58 int myConversationId = in.getInt(); |
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59 byte[] myPayload = new byte[myLength - 4]; |
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60 in.get(myPayload); |
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61 |
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62 out.write(new Message(myConversationId, myPayload)); |
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63 |
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64 return true; |
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65 } |
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66 } |