[jbosscache-commits] JBoss Cache SVN: r6486 - in core/trunk/src: main/java/org/jboss/cache/io and 4 other directories.

Author: manik.surtani(a)jboss.com Date: 2008-08-04 06:47:51 -0400 (Mon, 04 Aug 2008) New Revision: 6486 Added: core/trunk/src/main/java/org/jboss/cache/io/ core/trunk/src/main/java/org/jboss/cache/io/ByteBuffer.java core/trunk/src/main/java/org/jboss/cache/io/ExposedByteArrayOutputStream.java Removed: core/trunk/src/main/java/org/jboss/cache/util/ExposedByteArrayOutputStream.java Modified: core/trunk/src/main/java/org/jboss/cache/loader/AdjListJDBCCacheLoader.java core/trunk/src/main/java/org/jboss/cache/marshall/AbstractMarshaller.java core/trunk/src/main/java/org/jboss/cache/marshall/CommandAwareRpcDispatcher.java core/trunk/src/main/java/org/jboss/cache/marshall/Marshaller.java core/trunk/src/main/java/org/jboss/cache/marshall/VersionAwareMarshaller.java core/trunk/src/test/java/org/jboss/cache/util/internals/ReplicationListener.java Log: Updated to use new JGroups Marshaller2 interface and Buffer class instead of byte arrays. Also created a new subclass of Buffer - ByteBuffer - that exposes a stream on top of the byte buffer. Finally, moveed EBAOS to o.j.c.io instead of o.j.c.util. Added: core/trunk/src/main/java/org/jboss/cache/io/ByteBuffer.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/io/ByteBuffer.java (rev 0) +++ core/trunk/src/main/java/org/jboss/cache/io/ByteBuffer.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -0,0 +1,25 @@ +package org.jboss.cache.io; + +import org.jgroups.util.Buffer; + +import java.io.ByteArrayInputStream; +import java.io.InputStream; + +/** + * A subclass of a JGroups Buffer + */ +public class ByteBuffer extends Buffer +{ + public ByteBuffer(byte[] bytes, int offset, int length) + { + super(bytes, offset, length); + } + + /** + * @return an input stream for the bytes in the buffer + */ + public InputStream getStream() + { + return new ByteArrayInputStream(getBuf(), getOffset(), getLength()); + } +} Copied: core/trunk/src/main/java/org/jboss/cache/io/ExposedByteArrayOutputStream.java (from rev 6485, core/trunk/src/main/java/org/jboss/cache/util/ExposedByteArrayOutputStream.java) =================================================================== --- core/trunk/src/main/java/org/jboss/cache/io/ExposedByteArrayOutputStream.java (rev 0) +++ core/trunk/src/main/java/org/jboss/cache/io/ExposedByteArrayOutputStream.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -0,0 +1,145 @@ +/* + * JBoss, the OpenSource J2EE webOS + * + * Distributable under LGPL license. + * See terms of license at gnu.org. + */ + +package org.jboss.cache.io; + +import net.jcip.annotations.NotThreadSafe; + +import java.io.ByteArrayOutputStream; + +/** + * Extends ByteArrayOutputStream, but exposes the internal buffer. + * Using this, callers don't need to call toByteArray() which copies the + * internal buffer. + * <p> + * Also overrides the superclass' behavior of always doubling the size of the + * internal buffer any time more capacity is needed. This class doubles the + * size until the internal buffer reaches a configurable max size (default is + * 4MB), after which it begins growing the buffer in 25% increments. This is + * intended to help prevent an OutOfMemoryError during a resize of a large + * buffer. + * </p> + * <p> + * A version of this class was originally created by Bela Ban as part of the + * JGroups library. + * </p> + * This class is not threadsafe as it will not support concurrent readers and writers. + * <p/> + * + * @author <a href="mailto://brian.stansberry@jboss.com">Brian Stansberry</a> + * @version $Id$ + */ +@NotThreadSafe +public class ExposedByteArrayOutputStream extends ByteArrayOutputStream +{ + /** + * Default buffer size after which if more buffer capacity + * is needed the buffer will grow by 25% rather than 100% + */ + public static final int DEFAULT_DOUBLING_SIZE = 4 * 1024 * 1024; // 4MB + + private int maxDoublingSize = DEFAULT_DOUBLING_SIZE; + + public ExposedByteArrayOutputStream() + { + super(); + } + + public ExposedByteArrayOutputStream(int size) + { + super(size); + } + + /** + * Creates a new byte array output stream, with a buffer capacity of + * the specified size, in bytes. + * + * @param size the initial size. + * @param maxDoublingSize the buffer size, after which if more capacity + * is needed the buffer will grow by 25% + * rather than 100% + * @throws IllegalArgumentException if size is negative. + */ + public ExposedByteArrayOutputStream(int size, int maxDoublingSize) + { + super(size); + this.maxDoublingSize = maxDoublingSize; + } + + /** + * Gets the internal buffer array. Note that the length of this array + * will almost certainly be longer than the data written to it; call + * <code>size()</code> to get the number of bytes of actual data. + */ + public byte[] getRawBuffer() + { + return buf; + } + + @Override + public void write(byte[] b, int off, int len) + { + if ((off < 0) || (off > b.length) || (len < 0) || + ((off + len) > b.length) || ((off + len) < 0)) + { + throw new IndexOutOfBoundsException(); + } + else if (len == 0) + { + return; + } + + int newcount = count + len; + if (newcount > buf.length) + { + byte newbuf[] = new byte[getNewBufferSize(buf.length, newcount)]; + System.arraycopy(buf, 0, newbuf, 0, count); + buf = newbuf; + } + + System.arraycopy(b, off, buf, count, len); + count = newcount; + } + + @Override + public void write(int b) + { + int newcount = count + 1; + if (newcount > buf.length) + { + byte newbuf[] = new byte[getNewBufferSize(buf.length, newcount)]; + System.arraycopy(buf, 0, newbuf, 0, count); + buf = newbuf; + } + buf[count] = (byte) b; + count = newcount; + } + + /** + * Gets the highest internal buffer size after which if more capacity + * is needed the buffer will grow in 25% increments rather than 100%. + */ + public int getMaxDoublingSize() + { + return maxDoublingSize; + } + + /** + * Gets the number of bytes to which the internal buffer should be resized. + * + * @param curSize the current number of bytes + * @param minNewSize the minimum number of bytes required + * @return the size to which the internal buffer should be resized + */ + public int getNewBufferSize(int curSize, int minNewSize) + { + if (curSize <= maxDoublingSize) + return Math.max(curSize << 1, minNewSize); + else + return Math.max(curSize + (curSize >> 2), minNewSize); + } +} Property changes on: core/trunk/src/main/java/org/jboss/cache/io/ExposedByteArrayOutputStream.java ___________________________________________________________________ Name: svn:eol-style + native Modified: core/trunk/src/main/java/org/jboss/cache/loader/AdjListJDBCCacheLoader.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/loader/AdjListJDBCCacheLoader.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/loader/AdjListJDBCCacheLoader.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -5,10 +5,10 @@ import org.jboss.cache.Fqn; import org.jboss.cache.Modification; import org.jboss.cache.config.CacheLoaderConfig; +import org.jboss.cache.io.ByteBuffer; import org.jboss.cache.lock.StripedLock; import org.jboss.cache.util.Util; -import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.sql.Connection; @@ -424,13 +424,8 @@ if (node != null) { - // ByteArrayOutputStream baos = new ByteArrayOutputStream(); - // ObjectOutputStream oos = new ObjectOutputStream(baos); - // oos.writeObject(node); - - byte[] byteStream = marshall(node); - ByteArrayInputStream bais = new ByteArrayInputStream(byteStream); - ps.setBinaryStream(2, bais, byteStream.length); + ByteBuffer byteBuffer = marshall(node); + ps.setBinaryStream(2, byteBuffer.getStream(), byteBuffer.getLength()); } else { @@ -499,30 +494,15 @@ con = cf.getConnection(); ps = con.prepareStatement(config.getUpdateNodeSql()); - if (node == null) - { - //ps.setNull(1, Types.BLOB); - // ps.setNull(1, Types.LONGVARBINARY); - // don't set it to null - simply use an empty hash map. - node = new HashMap<Object, Object>(0); - } + if (node == null) node = Collections.emptyMap(); - // ByteArrayOutputStream baos = new ByteArrayOutputStream(); - // ObjectOutputStream oos = new ObjectOutputStream(baos); - // oos.writeObject(node); + ByteBuffer byteBuffer = marshall(node); + ps.setBinaryStream(1, byteBuffer.getStream(), byteBuffer.getLength()); - byte[] byteStream = marshall(node); - ByteArrayInputStream bais = new ByteArrayInputStream(byteStream); - ps.setBinaryStream(1, bais, byteStream.length); - ps.setString(2, name.toString()); /*int rows = */ ps.executeUpdate(); - // if (rows != 1) - // { - // throw new IllegalStateException("Expected one updated row but got " + rows); - // } } catch (Exception e) { @@ -685,9 +665,9 @@ return getMarshaller().objectFromStream(from); } - protected byte[] marshall(Object obj) throws Exception + protected ByteBuffer marshall(Object obj) throws Exception { - return getMarshaller().objectToByteBuffer(obj); + return getMarshaller().objectToBuffer(obj); } private static String toUpperCase(String s) Modified: core/trunk/src/main/java/org/jboss/cache/marshall/AbstractMarshaller.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/marshall/AbstractMarshaller.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/marshall/AbstractMarshaller.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -35,6 +35,7 @@ import org.jboss.cache.config.Configuration; import org.jboss.cache.factories.annotations.Inject; import org.jboss.cache.factories.annotations.Start; +import org.jboss.cache.io.ByteBuffer; import org.jboss.cache.transaction.GlobalTransaction; import org.jgroups.util.Buffer; @@ -90,10 +91,13 @@ // implement the basic contract set in RPCDispatcher.AbstractMarshaller public byte[] objectToByteBuffer(Object obj) throws Exception { - throw new RuntimeException("Needs to be overridden!"); + Buffer b = objectToBuffer(obj); + byte[] bytes = new byte[b.getLength()]; + System.arraycopy(b.getBuf(), b.getOffset(), bytes, 0, b.getLength()); + return bytes; } - public Buffer objectToBuffer(Object o) throws Exception + public ByteBuffer objectToBuffer(Object o) throws Exception { throw new RuntimeException("Needs to be overridden!"); } Modified: core/trunk/src/main/java/org/jboss/cache/marshall/CommandAwareRpcDispatcher.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/marshall/CommandAwareRpcDispatcher.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/marshall/CommandAwareRpcDispatcher.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -70,7 +70,7 @@ * is aware of {@link org.jboss.cache.commands.ReplicableCommand} objects. */ public RspList invokeRemoteCommands(Vector<Address> dests, ReplicableCommand command, int mode, long timeout, - boolean use_anycasting, boolean oob, RspFilter filter) throws NotSerializableException + boolean anycasting, boolean oob, RspFilter filter) throws NotSerializableException { if (dests != null && dests.isEmpty()) { @@ -96,7 +96,7 @@ Message msg = new Message(); msg.setBuffer(buf); if (oob) msg.setFlag(Message.OOB); - RspList retval = super.castMessage(dests, msg, mode, timeout, use_anycasting, filter); + RspList retval = super.castMessage(dests, msg, mode, timeout, anycasting, filter); if (trace) log.trace("responses: " + retval); // a null response is 99% likely to be due to a marshalling problem - we throw a NSE, this needs to be changed when Modified: core/trunk/src/main/java/org/jboss/cache/marshall/Marshaller.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/marshall/Marshaller.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/marshall/Marshaller.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -1,6 +1,7 @@ package org.jboss.cache.marshall; import org.jboss.cache.Fqn; +import org.jboss.cache.io.ByteBuffer; import org.jgroups.blocks.RpcDispatcher; import java.io.InputStream; @@ -90,4 +91,14 @@ * @since 2.1.1 */ RegionalizedMethodCall regionalizedMethodCallFromObjectStream(ObjectInputStream in) throws Exception; + + /** + * A specialized form of {@link org.jgroups.blocks.RpcDispatcher.Marshaller2#objectToBuffer(Object)} that returns an instance + * of {@link ByteBuffer} instead of {@link org.jgroups.util.Buffer}. + * + * @param o object to marshall + * @return a ByteBuffer + * @throws Exception + */ + ByteBuffer objectToBuffer(Object o) throws Exception; } Modified: core/trunk/src/main/java/org/jboss/cache/marshall/VersionAwareMarshaller.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/marshall/VersionAwareMarshaller.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/marshall/VersionAwareMarshaller.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -12,10 +12,10 @@ import org.jboss.cache.factories.ComponentRegistry; import org.jboss.cache.factories.annotations.Inject; import org.jboss.cache.factories.annotations.Start; -import org.jboss.cache.util.ExposedByteArrayOutputStream; +import org.jboss.cache.io.ByteBuffer; +import org.jboss.cache.io.ExposedByteArrayOutputStream; import org.jboss.cache.util.Util; import org.jboss.util.stream.MarshalledValueInputStream; -import org.jgroups.util.Buffer; import java.io.ByteArrayInputStream; import java.io.InputStream; @@ -152,7 +152,7 @@ } @Override - public Buffer objectToBuffer(Object obj) throws Exception + public ByteBuffer objectToBuffer(Object obj) throws Exception { ExposedByteArrayOutputStream baos = new ExposedByteArrayOutputStream(); ObjectOutputStream out = new ObjectOutputStream(baos); @@ -165,7 +165,7 @@ out.close(); // and return bytes. - return new Buffer(baos.toByteArray(), 0, baos.size()); + return new ByteBuffer(baos.toByteArray(), 0, baos.size()); } @Override Deleted: core/trunk/src/main/java/org/jboss/cache/util/ExposedByteArrayOutputStream.java =================================================================== --- core/trunk/src/main/java/org/jboss/cache/util/ExposedByteArrayOutputStream.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/main/java/org/jboss/cache/util/ExposedByteArrayOutputStream.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -1,140 +0,0 @@ -/* - * JBoss, the OpenSource J2EE webOS - * - * Distributable under LGPL license. - * See terms of license at gnu.org. - */ - -package org.jboss.cache.util; - -import java.io.ByteArrayOutputStream; - -/** - * Extends ByteArrayOutputStream, but exposes the internal buffer. - * Using this, callers don't need to call toByteArray() which copies the - * internal buffer. - * <p> - * Also overrides the superclass' behavior of always doubling the size of the - * internal buffer any time more capacity is needed. This class doubles the - * size until the internal buffer reaches a configurable max size (default is - * 4MB), after which it begins growing the buffer in 25% increments. This is - * intended to help prevent an OutOfMemoryError during a resize of a large - * buffer. - * </p> - * <p> - * A version of this class was originally created by Bela Ban as part of the - * JGroups library. - * </p> - * - * @author <a href="mailto://brian.stansberry@jboss.com">Brian Stansberry</a> - * @version $Id$ - */ -public class ExposedByteArrayOutputStream extends ByteArrayOutputStream -{ - /** - * Default buffer size after which if more buffer capacity - * is needed the buffer will grow by 25% rather than 100% - */ - public static final int DEFAULT_DOUBLING_SIZE = 4 * 1024 * 1024; // 4MB - - private int maxDoublingSize = DEFAULT_DOUBLING_SIZE; - - public ExposedByteArrayOutputStream() - { - super(); - } - - public ExposedByteArrayOutputStream(int size) - { - super(size); - } - - /** - * Creates a new byte array output stream, with a buffer capacity of - * the specified size, in bytes. - * - * @param size the initial size. - * @param maxDoublingSize the buffer size, after which if more capacity - * is needed the buffer will grow by 25% - * rather than 100% - * @throws IllegalArgumentException if size is negative. - */ - public ExposedByteArrayOutputStream(int size, int maxDoublingSize) - { - super(size); - this.maxDoublingSize = maxDoublingSize; - } - - /** - * Gets the internal buffer array. Note that the length of this array - * will almost certainly be longer than the data written to it; call - * <code>size()</code> to get the number of bytes of actual data. - */ - public byte[] getRawBuffer() - { - return buf; - } - - @Override - public void write(byte[] b, int off, int len) - { - if ((off < 0) || (off > b.length) || (len < 0) || - ((off + len) > b.length) || ((off + len) < 0)) - { - throw new IndexOutOfBoundsException(); - } - else if (len == 0) - { - return; - } - - int newcount = count + len; - if (newcount > buf.length) - { - byte newbuf[] = new byte[getNewBufferSize(buf.length, newcount)]; - System.arraycopy(buf, 0, newbuf, 0, count); - buf = newbuf; - } - - System.arraycopy(b, off, buf, count, len); - count = newcount; - } - - @Override - public void write(int b) - { - int newcount = count + 1; - if (newcount > buf.length) - { - byte newbuf[] = new byte[getNewBufferSize(buf.length, newcount)]; - System.arraycopy(buf, 0, newbuf, 0, count); - buf = newbuf; - } - buf[count] = (byte) b; - count = newcount; - } - - /** - * Gets the highest internal buffer size after which if more capacity - * is needed the buffer will grow in 25% increments rather than 100%. - */ - public int getMaxDoublingSize() - { - return maxDoublingSize; - } - - /** - * Gets the number of bytes to which the internal buffer should be resized. - * - * @param curSize the current number of bytes - * @param minNewSize the minimum number of bytes required - * @return the size to which the internal buffer should be resized - */ - public int getNewBufferSize(int curSize, int minNewSize) - { - if (curSize <= maxDoublingSize) - return Math.max(curSize << 1, minNewSize); - else - return Math.max(curSize + (curSize >> 2), minNewSize); - } -} Modified: core/trunk/src/test/java/org/jboss/cache/util/internals/ReplicationListener.java =================================================================== --- core/trunk/src/test/java/org/jboss/cache/util/internals/ReplicationListener.java 2008-08-02 15:33:59 UTC (rev 6485) +++ core/trunk/src/test/java/org/jboss/cache/util/internals/ReplicationListener.java 2008-08-04 10:47:51 UTC (rev 6486) @@ -8,13 +8,14 @@ import org.jboss.cache.commands.tx.PrepareCommand; import org.jboss.cache.factories.ComponentRegistry; import org.jboss.cache.invocation.InvocationContext; +import org.jboss.cache.io.ByteBuffer; +import org.jboss.cache.marshall.AbstractMarshaller; import org.jboss.cache.marshall.CommandAwareRpcDispatcher; import org.jboss.cache.marshall.InactiveRegionAwareRpcDispatcher; import org.jboss.cache.marshall.Marshaller; import org.jboss.cache.marshall.RegionalizedMethodCall; import org.jboss.cache.util.TestingUtil; import org.jgroups.blocks.RpcDispatcher; -import org.jgroups.util.Buffer; import java.io.InputStream; import java.io.ObjectInputStream; @@ -149,7 +150,7 @@ /** * Needed for region based marshalling. */ - private class RegionMarshallerDelegate implements Marshaller + private class RegionMarshallerDelegate extends AbstractMarshaller { private Marshaller realOne; @@ -194,17 +195,12 @@ return realOne.regionalizedMethodCallFromObjectStream(in); } - public byte[] objectToByteBuffer(Object o) throws Exception - { - return realOne.objectToByteBuffer(o); - } - public Object objectFromByteBuffer(byte[] bytes) throws Exception { return realOne.objectFromByteBuffer(bytes); } - public Buffer objectToBuffer(Object o) throws Exception + public ByteBuffer objectToBuffer(Object o) throws Exception { return realOne.objectToBuffer(o); }