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authorJoakim Erdfelt2012-08-07 15:16:53 -0400
committerJoakim Erdfelt2012-08-07 15:16:53 -0400
commit7ebab746fecb27b20fce2c8283f31c1e952eb67a (patch)
treea484913e92391be4c307f21bbca692a89548bcc5 /jetty-websocket
parent28bc4794174b6918402da094c9bfd778d5209d1d (diff)
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Reworking stream vs simple message appending into single concept.
+ Removing StreamAppender + Adding MessageAppender + Gain fast-fail on bad UTF8 in text message
Diffstat (limited to 'jetty-websocket')
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/driver/WebSocketEventDriver.java156
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageInputStream.java62
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/StreamAppender.java28
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageAppender.java11
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageInputStream.java114
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageReader.java (renamed from jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageReader.java)16
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleBinaryMessage.java74
-rw-r--r--jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleTextMessage.java61
8 files changed, 293 insertions, 229 deletions
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/driver/WebSocketEventDriver.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/driver/WebSocketEventDriver.java
index 14625596c1..4862b94776 100644
--- a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/driver/WebSocketEventDriver.java
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/driver/WebSocketEventDriver.java
@@ -23,21 +23,21 @@ import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.FutureCallback;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.Utf8Appendable.NotUtf8Exception;
-import org.eclipse.jetty.util.Utf8StringBuilder;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.websocket.annotations.WebSocket;
import org.eclipse.jetty.websocket.api.CloseException;
-import org.eclipse.jetty.websocket.api.MessageTooLargeException;
import org.eclipse.jetty.websocket.api.StatusCode;
import org.eclipse.jetty.websocket.api.WebSocketException;
import org.eclipse.jetty.websocket.api.WebSocketListener;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.io.IncomingFrames;
-import org.eclipse.jetty.websocket.io.MessageInputStream;
-import org.eclipse.jetty.websocket.io.MessageReader;
-import org.eclipse.jetty.websocket.io.StreamAppender;
import org.eclipse.jetty.websocket.io.WebSocketSession;
+import org.eclipse.jetty.websocket.io.message.MessageAppender;
+import org.eclipse.jetty.websocket.io.message.MessageInputStream;
+import org.eclipse.jetty.websocket.io.message.MessageReader;
+import org.eclipse.jetty.websocket.io.message.SimpleBinaryMessage;
+import org.eclipse.jetty.websocket.io.message.SimpleTextMessage;
import org.eclipse.jetty.websocket.protocol.CloseInfo;
import org.eclipse.jetty.websocket.protocol.Frame;
import org.eclipse.jetty.websocket.protocol.OpCode;
@@ -60,8 +60,7 @@ public class WebSocketEventDriver implements IncomingFrames
private final EventMethods events;
private final ByteBufferPool bufferPool;
private WebSocketSession session;
- private ByteBuffer activeMessage;
- private StreamAppender activeStream;
+ private MessageAppender activeMessage;
/**
* Establish the driver for the Websocket POJO
@@ -100,25 +99,6 @@ public class WebSocketEventDriver implements IncomingFrames
}
}
- private void appendBuffer(ByteBuffer msgBuf, ByteBuffer payloadBuf)
- {
- if (payloadBuf == null)
- {
- // nothing to do (empty payload is possible)
- return;
- }
- if (msgBuf.remaining() < payloadBuf.remaining())
- {
- if (LOG.isDebugEnabled())
- {
- LOG.debug(" msgBuf = {}",BufferUtil.toDetailString(msgBuf));
- LOG.debug("payloadBuf = {}",BufferUtil.toDetailString(msgBuf));
- }
- throw new MessageTooLargeException("Message exceeded maximum buffer size of [" + payloadBuf.capacity() + "]");
- }
- msgBuf.put(payloadBuf);
- }
-
public WebSocketPolicy getPolicy()
{
return policy;
@@ -215,66 +195,25 @@ public class WebSocketEventDriver implements IncomingFrames
// not interested in binary events
return;
}
- if (events.onBinary.isStreaming())
- {
- boolean needsNotification = false;
- // Streaming Approach
- if (activeStream == null)
- {
- // Allocate directly, not via ByteBufferPool, as this buffer
- // is ultimately controlled by the end user, and we can't know
- // when they are done using the stream in order to release any
- // buffer allocated from the ByteBufferPool.
- ByteBuffer buf = ByteBuffer.allocate(policy.getBufferSize());
- this.activeStream = new MessageInputStream(buf);
- needsNotification = true;
- }
-
- activeStream.appendBuffer(frame.getPayload());
-
- if (needsNotification)
+ if (activeMessage == null)
+ {
+ if (events.onBinary.isStreaming())
{
- events.onBinary.call(websocket,session,activeStream);
+ activeMessage = new MessageInputStream(websocket,events.onBinary,session,bufferPool,policy);
}
-
- if (frame.isFin())
+ else
{
- // close the stream.
- activeStream.bufferComplete();
- activeStream = null; // work with a new one
+ activeMessage = new SimpleBinaryMessage(websocket,events.onBinary,session,bufferPool,policy);
}
}
- else
- {
- if (activeMessage == null)
- {
- // Acquire from ByteBufferPool is safe here, as the return
- // from the notification is a good place to release the
- // buffer.
- activeMessage = bufferPool.acquire(policy.getBufferSize(),false);
- BufferUtil.clearToFill(activeMessage);
- }
- appendBuffer(activeMessage,frame.getPayload());
-
- // normal case
- if (frame.isFin())
- {
- // Notify using simple message approach.
- try
- {
- BufferUtil.flipToFlush(activeMessage,0);
- byte buf[] = BufferUtil.toArray(activeMessage);
- events.onBinary.call(websocket,session,buf,0,buf.length);
- }
- finally
- {
- bufferPool.release(activeMessage);
- activeMessage = null;
- }
- }
+ activeMessage.appendMessage(frame.getPayload());
+ if (frame.isFin())
+ {
+ activeMessage.messageComplete();
+ activeMessage = null;
}
return;
}
@@ -285,69 +224,30 @@ public class WebSocketEventDriver implements IncomingFrames
// not interested in text events
return;
}
- if (events.onText.isStreaming())
- {
- boolean needsNotification = false;
- // Streaming Approach
- if (activeStream == null)
+ if (activeMessage == null)
+ {
+ if (events.onText.isStreaming())
{
// Allocate directly, not via ByteBufferPool, as this buffer
// is ultimately controlled by the end user, and we can't know
// when they are done using the stream in order to release any
// buffer allocated from the ByteBufferPool.
ByteBuffer buf = ByteBuffer.allocate(policy.getBufferSize());
- this.activeStream = new MessageReader(buf);
- needsNotification = true;
+ this.activeMessage = new MessageReader(buf);
}
-
- activeStream.appendBuffer(frame.getPayload());
-
- if (needsNotification)
+ else
{
- events.onText.call(websocket,session,activeStream);
- }
-
- if (frame.isFin())
- {
- // close the stream.
- activeStream.bufferComplete();
- activeStream = null; // work with a new one
+ activeMessage = new SimpleTextMessage(websocket,events.onText,session,policy);
}
}
- else
- {
- if (activeMessage == null)
- {
- // Acquire from ByteBufferPool is safe here, as the return
- // from the notification is a good place to release the
- // buffer.
- activeMessage = bufferPool.acquire(policy.getBufferSize(),false);
- BufferUtil.clearToFill(activeMessage);
- }
-
- appendBuffer(activeMessage,frame.getPayload());
- // normal case
- if (frame.isFin())
- {
- // Notify using simple message approach.
- try
- {
- BufferUtil.flipToFlush(activeMessage,0);
- byte data[] = BufferUtil.toArray(activeMessage);
- Utf8StringBuilder utf = new Utf8StringBuilder();
- // TODO: FIX EVIL COPY
- utf.append(data,0,data.length);
+ activeMessage.appendMessage(frame.getPayload());
- events.onText.call(websocket,session,utf.toString());
- }
- finally
- {
- bufferPool.release(activeMessage);
- activeMessage = null;
- }
- }
+ if (frame.isFin())
+ {
+ activeMessage.messageComplete();
+ activeMessage = null;
}
return;
}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageInputStream.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageInputStream.java
deleted file mode 100644
index 0bec1613dc..0000000000
--- a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageInputStream.java
+++ /dev/null
@@ -1,62 +0,0 @@
-// ========================================================================
-// Copyright 2011-2012 Mort Bay Consulting Pty. Ltd.
-// ------------------------------------------------------------------------
-// All rights reserved. This program and the accompanying materials
-// are made available under the terms of the Eclipse Public License v1.0
-// and Apache License v2.0 which accompanies this distribution.
-//
-// The Eclipse Public License is available at
-// http://www.eclipse.org/legal/epl-v10.html
-//
-// The Apache License v2.0 is available at
-// http://www.opensource.org/licenses/apache2.0.php
-//
-// You may elect to redistribute this code under either of these licenses.
-//========================================================================
-package org.eclipse.jetty.websocket.io;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-
-import org.eclipse.jetty.util.BufferUtil;
-
-/**
- * Support class for reading binary message data as an InputStream.
- */
-public class MessageInputStream extends InputStream implements StreamAppender
-{
- private final ByteBuffer buffer;
-
- public MessageInputStream(ByteBuffer buf)
- {
- BufferUtil.clearToFill(buf);
- this.buffer = buf;
- }
-
- @Override
- public void appendBuffer(ByteBuffer buf)
- {
- // TODO Auto-generated method stub
- }
-
- @Override
- public void bufferComplete() throws IOException
- {
- // TODO Auto-generated method stub
-
- }
-
- @Override
- public ByteBuffer getBuffer()
- {
- return buffer;
- }
-
- @Override
- public int read() throws IOException
- {
- // TODO Auto-generated method stub
- return 0;
- }
-}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/StreamAppender.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/StreamAppender.java
deleted file mode 100644
index 7f1f93f69f..0000000000
--- a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/StreamAppender.java
+++ /dev/null
@@ -1,28 +0,0 @@
-// ========================================================================
-// Copyright 2011-2012 Mort Bay Consulting Pty. Ltd.
-// ------------------------------------------------------------------------
-// All rights reserved. This program and the accompanying materials
-// are made available under the terms of the Eclipse Public License v1.0
-// and Apache License v2.0 which accompanies this distribution.
-//
-// The Eclipse Public License is available at
-// http://www.eclipse.org/legal/epl-v10.html
-//
-// The Apache License v2.0 is available at
-// http://www.opensource.org/licenses/apache2.0.php
-//
-// You may elect to redistribute this code under either of these licenses.
-//========================================================================
-package org.eclipse.jetty.websocket.io;
-
-import java.io.IOException;
-import java.nio.ByteBuffer;
-
-public interface StreamAppender
-{
- void appendBuffer(ByteBuffer byteBuffer);
-
- void bufferComplete() throws IOException;
-
- ByteBuffer getBuffer();
-}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageAppender.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageAppender.java
new file mode 100644
index 0000000000..d500f888a4
--- /dev/null
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageAppender.java
@@ -0,0 +1,11 @@
+package org.eclipse.jetty.websocket.io.message;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+public interface MessageAppender
+{
+ abstract void appendMessage(ByteBuffer byteBuffer) throws IOException;
+
+ abstract void messageComplete() throws IOException;
+}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageInputStream.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageInputStream.java
new file mode 100644
index 0000000000..08f22071d8
--- /dev/null
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageInputStream.java
@@ -0,0 +1,114 @@
+// ========================================================================
+// Copyright 2011-2012 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+//========================================================================
+package org.eclipse.jetty.websocket.io.message;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+
+import org.eclipse.jetty.io.ByteBufferPool;
+import org.eclipse.jetty.util.BufferUtil;
+import org.eclipse.jetty.websocket.api.WebSocketPolicy;
+import org.eclipse.jetty.websocket.driver.EventMethod;
+import org.eclipse.jetty.websocket.io.WebSocketSession;
+
+/**
+ * Support class for reading binary message data as an InputStream.
+ */
+public class MessageInputStream extends InputStream implements MessageAppender
+{
+ private final Object websocket;
+ private final EventMethod onEvent;
+ private final WebSocketSession session;
+ private final ByteBufferPool bufferPool;
+ private final WebSocketPolicy policy;
+ private final ByteBuffer buf;
+ private int size;
+ private boolean finished;
+ private boolean needsNotification = true;
+
+ public MessageInputStream(Object websocket, EventMethod onEvent, WebSocketSession session, ByteBufferPool bufferPool, WebSocketPolicy policy)
+ {
+ this.websocket = websocket;
+ this.onEvent = onEvent;
+ this.session = session;
+ this.bufferPool = bufferPool;
+ this.policy = policy;
+ this.buf = bufferPool.acquire(policy.getBufferSize(),false);
+ BufferUtil.clearToFill(this.buf);
+ finished = false;
+ }
+
+ @Override
+ public void appendMessage(ByteBuffer payload) throws IOException
+ {
+ if (finished)
+ {
+ throw new IOException("Cannot append to finished buffer");
+ }
+
+ if (payload == null)
+ {
+ // empty payload is valid
+ return;
+ }
+
+ policy.assertValidBinaryMessageSize(size + payload.remaining());
+ size += payload.remaining();
+
+ synchronized (buf)
+ {
+ // TODO: grow buffer till max binary message size?
+ BufferUtil.put(payload,buf);
+ }
+
+ if (needsNotification)
+ {
+ needsNotification = true;
+ this.onEvent.call(websocket,session,this);
+ }
+ }
+
+ @Override
+ public void close() throws IOException
+ {
+ super.close();
+ this.bufferPool.release(this.buf);
+ }
+
+ @Override
+ public void messageComplete() throws IOException
+ {
+ finished = true;
+ }
+
+ @Override
+ public int read() throws IOException
+ {
+ synchronized (buf)
+ {
+ // FIXME: HACKITY HACK HACK HACK
+ // Should really use its own tracking of position, to avoid flipping the
+ // buffer between read/write
+ byte b = buf.get();
+ if (buf.limit() <= (buf.capacity() - 5))
+ {
+ buf.compact();
+ }
+ return b;
+ }
+ }
+}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageReader.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageReader.java
index 7587e2d540..1a49c5d7fa 100644
--- a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/MessageReader.java
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/MessageReader.java
@@ -13,7 +13,7 @@
//
// You may elect to redistribute this code under either of these licenses.
//========================================================================
-package org.eclipse.jetty.websocket.io;
+package org.eclipse.jetty.websocket.io.message;
import java.io.IOException;
import java.io.Reader;
@@ -26,7 +26,7 @@ import org.eclipse.jetty.util.BufferUtil;
* <p>
* Due to the spec, this reader is forced to use the UTF8 charset.
*/
-public class MessageReader extends Reader implements StreamAppender
+public class MessageReader extends Reader implements MessageAppender
{
private ByteBuffer buffer;
@@ -37,29 +37,23 @@ public class MessageReader extends Reader implements StreamAppender
}
@Override
- public void appendBuffer(ByteBuffer byteBuffer)
+ public void appendMessage(ByteBuffer byteBuffer) throws IOException
{
// TODO Auto-generated method stub
}
@Override
- public void bufferComplete() throws IOException
+ public void close() throws IOException
{
// TODO Auto-generated method stub
-
}
@Override
- public void close() throws IOException
+ public void messageComplete() throws IOException
{
// TODO Auto-generated method stub
- }
- @Override
- public ByteBuffer getBuffer()
- {
- return buffer;
}
@Override
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleBinaryMessage.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleBinaryMessage.java
new file mode 100644
index 0000000000..e9ad1ddf0a
--- /dev/null
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleBinaryMessage.java
@@ -0,0 +1,74 @@
+package org.eclipse.jetty.websocket.io.message;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.eclipse.jetty.io.ByteBufferPool;
+import org.eclipse.jetty.util.BufferUtil;
+import org.eclipse.jetty.websocket.api.WebSocketPolicy;
+import org.eclipse.jetty.websocket.driver.EventMethod;
+import org.eclipse.jetty.websocket.io.WebSocketSession;
+
+public class SimpleBinaryMessage implements MessageAppender
+{
+ private final Object websocket;
+ private final EventMethod onEvent;
+ private final WebSocketSession session;
+ private final ByteBufferPool bufferPool;
+ private final WebSocketPolicy policy;
+ private final ByteBuffer buf;
+ private int size;
+ private boolean finished;
+
+ public SimpleBinaryMessage(Object websocket, EventMethod onEvent, WebSocketSession session, ByteBufferPool bufferPool, WebSocketPolicy policy)
+ {
+ this.websocket = websocket;
+ this.onEvent = onEvent;
+ this.session = session;
+ this.bufferPool = bufferPool;
+ this.policy = policy;
+ this.buf = bufferPool.acquire(policy.getBufferSize(),false);
+ BufferUtil.clearToFill(this.buf);
+ finished = false;
+ }
+
+ @Override
+ public void appendMessage(ByteBuffer payload) throws IOException
+ {
+ if (finished)
+ {
+ throw new IOException("Cannot append to finished buffer");
+ }
+
+ if (payload == null)
+ {
+ // empty payload is valid
+ return;
+ }
+
+ policy.assertValidBinaryMessageSize(size + payload.remaining());
+ size += payload.remaining();
+
+ // TODO: grow buffer till max binary message size?
+ BufferUtil.put(payload,buf);
+ }
+
+ @Override
+ public void messageComplete() throws IOException
+ {
+ BufferUtil.flipToFlush(this.buf,0);
+ finished = true;
+
+ try
+ {
+ // notify event
+ byte data[] = BufferUtil.toArray(this.buf);
+ this.onEvent.call(websocket,session,data,0,data.length);
+ }
+ finally
+ {
+ // release buffer (we are done with it now)
+ bufferPool.release(this.buf);
+ }
+ }
+}
diff --git a/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleTextMessage.java b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleTextMessage.java
new file mode 100644
index 0000000000..b0a1dc81be
--- /dev/null
+++ b/jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/io/message/SimpleTextMessage.java
@@ -0,0 +1,61 @@
+package org.eclipse.jetty.websocket.io.message;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.eclipse.jetty.util.Utf8StringBuilder;
+import org.eclipse.jetty.websocket.api.WebSocketPolicy;
+import org.eclipse.jetty.websocket.driver.EventMethod;
+import org.eclipse.jetty.websocket.io.WebSocketSession;
+
+public class SimpleTextMessage implements MessageAppender
+{
+ private final Object websocket;
+ private final EventMethod onEvent;
+ private final WebSocketSession session;
+ private final WebSocketPolicy policy;
+ private final Utf8StringBuilder utf;
+ private int size = 0;
+ private boolean finished;
+
+ public SimpleTextMessage(Object websocket, EventMethod onEvent, WebSocketSession session, WebSocketPolicy policy)
+ {
+ this.websocket = websocket;
+ this.onEvent = onEvent;
+ this.session = session;
+ this.policy = policy;
+ this.utf = new Utf8StringBuilder();
+ size = 0;
+ finished = false;
+ }
+
+ @Override
+ public void appendMessage(ByteBuffer payload) throws IOException
+ {
+ if (finished)
+ {
+ throw new IOException("Cannot append to finished buffer");
+ }
+
+ if (payload == null)
+ {
+ // empty payload is valid
+ return;
+ }
+
+ policy.assertValidTextMessageSize(size + payload.remaining());
+ size += payload.remaining();
+
+ // allow for fast fail of BAD utf (incomplete utf will trigger on messageComplete)
+ this.utf.append(payload);
+ }
+
+ @Override
+ public void messageComplete() throws IOException
+ {
+ finished = true;
+
+ // notify event
+ this.onEvent.call(websocket,session,utf.toString());
+ }
+}

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