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/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.mq;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.Externalizable;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.security.PrivilegedAction;
import java.security.AccessController;
import java.util.ArrayList;
import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.MessageEOFException;
import javax.jms.MessageFormatException;
import javax.jms.MessageNotReadableException;
import javax.jms.MessageNotWriteableException;
/**
* This class implements javax.jms.BytesMessage
*
* @author Norbert Lataille ([email protected])
* @author Adrian Brock
* @version $Revision: 41445 $
*/
public class SpyBytesMessage extends SpyMessage
implements Cloneable, BytesMessage, Externalizable
{
/** The org.jboss.mq.useWriteUTF boolean system property defines whether the
* writeObject(String) call encodes the string using the pre-4.0.3 format
* of a series of writeChar calls(=false), or as a writeUTF call(=true).
* This defaults to true.
*/
private final static String USE_WRITE_UTF = "org.jboss.mq.useWriteUTF";
private static boolean useWriteUTF = true;
/**
* The org.jboss.mq.chunkUTF boolean system property defines whether
* UTF strings greater than 64K are chunked.
* The default is true.
*/
private final static String CHUNK_UTF = "org.jboss.mq.chunkUTF";
private static boolean chunkUTF = true;
/** The chunkSize */
private final static int chunkSize = 16384;
/** The serialVersionUID */
private final static long serialVersionUID = -6572727147964701014L;
static
{
PrivilegedAction action = new PrivilegedAction()
{
public Object run()
{
return System.getProperty(USE_WRITE_UTF, "true");
}
};
try
{
String flag = (String) AccessController.doPrivileged(action);
useWriteUTF = Boolean.valueOf(flag).booleanValue();
}
catch(Throwable ignore)
{
}
action = new PrivilegedAction()
{
public Object run()
{
return System.getProperty(CHUNK_UTF, "true");
}
};
try
{
String flag = (String) AccessController.doPrivileged(action);
chunkUTF = Boolean.valueOf(flag).booleanValue();
}
catch(Throwable ignore)
{
}
}
/** The internal representation */
byte[] InternalArray = null;
private transient ByteArrayOutputStream ostream = null;
private transient DataOutputStream p = null;
private transient ByteArrayInputStream istream = null;
private transient DataInputStream m = null;
/**
* Create a new SpyBytesMessage
*/
public SpyBytesMessage()
{
header.msgReadOnly = false;
ostream = new ByteArrayOutputStream();
p = new DataOutputStream(ostream);
}
public boolean readBoolean() throws JMSException
{
checkRead();
try
{
return m.readBoolean();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public byte readByte() throws JMSException
{
checkRead();
try
{
return m.readByte();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public int readUnsignedByte() throws JMSException
{
checkRead();
try
{
return m.readUnsignedByte();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public short readShort() throws JMSException
{
checkRead();
try
{
return m.readShort();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public int readUnsignedShort() throws JMSException
{
checkRead();
try
{
return m.readUnsignedShort();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public char readChar() throws JMSException
{
checkRead();
try
{
return m.readChar();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public int readInt() throws JMSException
{
checkRead();
try
{
return m.readInt();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public long readLong() throws JMSException
{
checkRead();
try
{
return m.readLong();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public float readFloat() throws JMSException
{
checkRead();
try
{
return m.readFloat();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public double readDouble() throws JMSException
{
checkRead();
try
{
return m.readDouble();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public String readUTF() throws JMSException
{
checkRead();
try
{
if (chunkUTF == false)
return m.readUTF();
byte type = m.readByte();
if (type == NULL)
return null;
// apply workaround for string > 64K bug in jdk's 1.3.*
// Read the no. of chunks this message is split into, allocate
// a StringBuffer that can hold all chunks, read the chunks
// into the buffer and set 'content' accordingly
int chunksToRead = m.readInt();
int bufferSize = chunkSize * chunksToRead;
// special handling for single chunk
if (chunksToRead == 1)
{
// The text size is likely to be much smaller than the chunkSize
// so set bufferSize to the min of the input stream available
// and the maximum buffer size. Since the input stream
// available() can be <= 0 we check for that and default to
// a small msg size of 256 bytes.
int inSize = m.available();
if (inSize <= 0)
{
inSize = 256;
}
bufferSize = Math.min(inSize, bufferSize);
}
// read off all of the chunks
StringBuffer sb = new StringBuffer(bufferSize);
for (int i = 0; i < chunksToRead; i++)
{
sb.append(m.readUTF());
}
return sb.toString();
}
catch (EOFException e)
{
throw new MessageEOFException("");
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public int readBytes(byte[] value) throws JMSException
{
checkRead();
try
{
return m.read(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public int readBytes(byte[] value, int length) throws JMSException
{
checkRead();
try
{
return m.read(value, 0, length);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeBoolean(boolean value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeBoolean(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeByte(byte value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeByte(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeShort(short value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeShort(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeChar(char value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeChar(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeInt(int value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeInt(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeLong(long value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeLong(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeFloat(float value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeFloat(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeDouble(double value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.writeDouble(value);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeUTF(String value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
if (chunkUTF == false)
p.writeUTF(value);
else
{
if (value == null)
p.writeByte(NULL);
else
{
// apply workaround for string > 64K bug in jdk's 1.3.*
// Split content into chunks of size 'chunkSize' and assemble
// the pieces into a List ...
// FIXME: could calculate the number of chunks first, then
// write as we chunk for efficiency
ArrayList v = new ArrayList();
int contentLength = value.length();
while (contentLength > 0)
{
int beginCopy = (v.size()) * chunkSize;
int endCopy = contentLength <= chunkSize ? beginCopy + contentLength : beginCopy + chunkSize;
String theChunk = value.substring(beginCopy, endCopy);
v.add(theChunk);
contentLength -= chunkSize;
}
// Write out the type (OBJECT), the no. of chunks and finally
// all chunks that have been assembled previously
p.writeByte(OBJECT);
p.writeInt(v.size());
for (int i = 0; i < v.size(); i++)
{
p.writeUTF((String) v.get(i));
}
}
}
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeBytes(byte[] value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.write(value, 0, value.length);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeBytes(byte[] value, int offset, int length) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
p.write(value, offset, length);
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void writeObject(Object value) throws JMSException
{
if (header.msgReadOnly)
{
throw new MessageNotWriteableException("the message body is read-only");
}
try
{
if (value == null)
{
throw new NullPointerException("Attempt to write a new value");
}
if (value instanceof String)
{
String s = (String) value;
if( useWriteUTF == true )
writeUTF(s);
else
p.writeChars(s);
}
else if (value instanceof Boolean)
{
p.writeBoolean(((Boolean) value).booleanValue());
}
else if (value instanceof Byte)
{
p.writeByte(((Byte) value).byteValue());
}
else if (value instanceof Short)
{
p.writeShort(((Short) value).shortValue());
}
else if (value instanceof Integer)
{
p.writeInt(((Integer) value).intValue());
}
else if (value instanceof Long)
{
p.writeLong(((Long) value).longValue());
}
else if (value instanceof Float)
{
p.writeFloat(((Float) value).floatValue());
}
else if (value instanceof Double)
{
p.writeDouble(((Double) value).doubleValue());
}
else if (value instanceof byte[])
{
p.write((byte[]) value, 0, ((byte[]) value).length);
}
else
{
throw new MessageFormatException("Invalid object for properties");
}
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void reset() throws JMSException
{
try
{
if (!header.msgReadOnly)
{
p.flush();
InternalArray = ostream.toByteArray();
ostream.close();
}
ostream = null;
istream = null;
m = null;
p = null;
header.msgReadOnly = true;
}
catch (IOException e)
{
throw new JMSException("IOException");
}
}
public void clearBody() throws JMSException
{
try
{
if (!header.msgReadOnly)
{
ostream.close();
}
else
{
// REVIEW: istream is only initialised on a read.
// It looks like it is possible to acknowledge
// a message without reading it? Guard against
// an NPE in this case.
if (istream != null)
istream.close();
}
}
catch (IOException e)
{
//don't throw an exception
}
ostream = new ByteArrayOutputStream();
p = new DataOutputStream(ostream);
InternalArray = null;
istream = null;
m = null;
super.clearBody();
}
public SpyMessage myClone() throws JMSException
{
SpyBytesMessage result = MessagePool.getBytesMessage();
this.reset();
result.copyProps(this);
if (this.InternalArray != null)
{
result.InternalArray = new byte[this.InternalArray.length];
System.arraycopy(this.InternalArray, 0, result.InternalArray, 0, this.InternalArray.length);
}
return result;
}
public long getBodyLength() throws JMSException
{
checkRead();
return InternalArray.length;
}
public void writeExternal(ObjectOutput out) throws IOException
{
byte[] arrayToSend = null;
if (!header.msgReadOnly)
{
p.flush();
arrayToSend = ostream.toByteArray();
}
else
{
arrayToSend = InternalArray;
}
super.writeExternal(out);
if (arrayToSend == null)
{
out.writeInt(0); //pretend to be empty array
}
else
{
out.writeInt(arrayToSend.length);
out.write(arrayToSend);
}
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
super.readExternal(in);
int length = in.readInt();
if (length < 0)
{
InternalArray = null;
}
else
{
InternalArray = new byte[length];
in.readFully(InternalArray);
}
}
/**
* Check the message is readable
*
* @throws JMSException when not readable
*/
private void checkRead() throws JMSException
{
if (!header.msgReadOnly)
{
throw new MessageNotReadableException("readByte while the buffer is writeonly");
}
//We have just received/reset() the message, and the client is trying to
// read it
if (istream == null || m == null)
{
istream = new ByteArrayInputStream(InternalArray);
m = new DataInputStream(istream);
}
}
}