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Support NettyConnector & RequestEntityProcessing.BUFFERED
Signed-off-by: jansupol <[email protected]>
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...nector/src/main/java/org/glassfish/jersey/netty/connector/internal/NettyEntityWriter.java
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/* | ||
* Copyright (c) 2023 Oracle and/or its affiliates. All rights reserved. | ||
* | ||
* This program and the accompanying materials are made available under the | ||
* terms of the Eclipse Public License v. 2.0, which is available at | ||
* http://www.eclipse.org/legal/epl-2.0. | ||
* | ||
* This Source Code may also be made available under the following Secondary | ||
* Licenses when the conditions for such availability set forth in the | ||
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License, | ||
* version 2 with the GNU Classpath Exception, which is available at | ||
* https://www.gnu.org/software/classpath/license.html. | ||
* | ||
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 | ||
*/ | ||
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package org.glassfish.jersey.netty.connector.internal; | ||
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import io.netty.channel.Channel; | ||
import io.netty.handler.stream.ChunkedInput; | ||
import org.glassfish.jersey.client.ClientProperties; | ||
import org.glassfish.jersey.client.ClientRequest; | ||
import org.glassfish.jersey.client.RequestEntityProcessing; | ||
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import java.io.IOException; | ||
import java.io.OutputStream; | ||
import java.util.LinkedList; | ||
import java.util.List; | ||
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/** | ||
* The Entity Writer is used to write entity in Netty. One implementation is delayed, | ||
* so that the complete message length can be set to Content-Length header. | ||
*/ | ||
public interface NettyEntityWriter { | ||
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/** | ||
* Type of the entity writer. {@code CHUNKED} is used for chunked data. {@code PRESET} is for buffered data, but the | ||
* content length was pre-set by the customer. {@code DELAYED} is for buffered data where the content-length is unknown. | ||
* The headers must not be written before the entity is provided by MessageBodyWriter to know the exact length. | ||
*/ | ||
enum Type { | ||
CHUNKED, | ||
PRESET, | ||
DELAYED | ||
} | ||
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/** | ||
* Writes the Object to the channel | ||
* @param object object to be written | ||
*/ | ||
void write(Object object); | ||
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/** | ||
* Writes the Object to the channel and flush. | ||
* @param object object to be written | ||
*/ | ||
void writeAndFlush(Object object); | ||
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/** | ||
* Flushes the writen objects. Can throw IOException. | ||
* @throws IOException | ||
*/ | ||
void flush() throws IOException; | ||
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/** | ||
* Get the netty Chunked Input to be written. | ||
* @return The Chunked input instance | ||
*/ | ||
ChunkedInput getChunkedInput(); | ||
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/** | ||
* Get the {@link OutputStream} used to write an entity | ||
* @return the OutputStream to write an entity | ||
*/ | ||
OutputStream getOutputStream(); | ||
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/** | ||
* Get the length of the entity written to the {@link OutputStream} | ||
* @return | ||
*/ | ||
long getLength(); | ||
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/** | ||
* Return Type of | ||
* @return | ||
*/ | ||
Type getType(); | ||
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static NettyEntityWriter getInstance(ClientRequest clientRequest, Channel channel) { | ||
final long lengthLong = clientRequest.getLengthLong(); | ||
final RequestEntityProcessing entityProcessing = clientRequest.resolveProperty( | ||
ClientProperties.REQUEST_ENTITY_PROCESSING, RequestEntityProcessing.class); | ||
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if ((entityProcessing == null && lengthLong == -1) || entityProcessing == RequestEntityProcessing.CHUNKED) { | ||
return new DirectEntityWriter(channel, Type.CHUNKED); | ||
} else if (lengthLong != -1) { | ||
return new DirectEntityWriter(channel, Type.PRESET); | ||
} else { | ||
return new DelayedEntityWriter(channel, Type.DELAYED); | ||
} | ||
} | ||
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class DirectEntityWriter implements NettyEntityWriter { | ||
private final Channel channel; | ||
private final JerseyChunkedInput stream; | ||
private final Type type; | ||
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public DirectEntityWriter(Channel channel, Type type) { | ||
this.channel = channel; | ||
stream = new JerseyChunkedInput(channel); | ||
this.type = type; | ||
} | ||
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@Override | ||
public void write(Object object) { | ||
channel.write(object); | ||
} | ||
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@Override | ||
public void writeAndFlush(Object object) { | ||
channel.writeAndFlush(object); | ||
} | ||
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@Override | ||
public void flush() { | ||
channel.flush(); | ||
} | ||
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@Override | ||
public ChunkedInput getChunkedInput() { | ||
return stream; | ||
} | ||
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@Override | ||
public OutputStream getOutputStream() { | ||
return stream; | ||
} | ||
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@Override | ||
public long getLength() { | ||
return stream.progress(); | ||
} | ||
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@Override | ||
public Type getType() { | ||
return type; | ||
} | ||
} | ||
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class DelayedEntityWriter implements NettyEntityWriter { | ||
private final List<Runnable> delayedOps; | ||
private final DirectEntityWriter writer; | ||
private final DelayedOutputStream outputStream; | ||
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private boolean flushed = false; | ||
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public DelayedEntityWriter(Channel channel, Type type) { | ||
this.writer = new DirectEntityWriter(channel, type); | ||
this.delayedOps = new LinkedList<>(); | ||
this.outputStream = new DelayedOutputStream(); | ||
} | ||
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@Override | ||
public void write(Object object) { | ||
if (!flushed) { | ||
delayedOps.add(() -> writer.write(object)); | ||
} else { | ||
writer.write(object); | ||
} | ||
} | ||
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@Override | ||
public void writeAndFlush(Object object) { | ||
if (!flushed) { | ||
delayedOps.add(() -> writer.writeAndFlush(object)); | ||
} else { | ||
writer.writeAndFlush(object); | ||
} | ||
} | ||
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@Override | ||
public void flush() throws IOException { | ||
if (!flushed) { | ||
flushed = true; | ||
for (Runnable runnable : delayedOps) { | ||
runnable.run(); | ||
} | ||
writer.getOutputStream().write(outputStream.b, outputStream.off, outputStream.len); | ||
} | ||
writer.flush(); | ||
} | ||
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@Override | ||
public ChunkedInput getChunkedInput() { | ||
return writer.getChunkedInput(); | ||
} | ||
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@Override | ||
public OutputStream getOutputStream() { | ||
return outputStream; | ||
} | ||
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@Override | ||
public long getLength() { | ||
return outputStream.len - outputStream.off; | ||
} | ||
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@Override | ||
public Type getType() { | ||
return writer.getType(); | ||
} | ||
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private class DelayedOutputStream extends OutputStream { | ||
private byte[] b; | ||
private int off; | ||
private int len; | ||
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@Override | ||
public void write(int b) throws IOException { | ||
write(new byte[]{(byte) (b & 0xFF)}, 0, 1); | ||
} | ||
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@Override | ||
public void write(byte[] b) throws IOException { | ||
write(b, 0, b.length); | ||
} | ||
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@Override | ||
public void write(byte[] b, int off, int len) throws IOException { | ||
if (!flushed && this.b == null) { | ||
this.b = b; | ||
this.off = off; | ||
this.len = len; | ||
} else { | ||
DelayedEntityWriter.this.flush(); | ||
writer.getOutputStream().write(b, off, len); | ||
} | ||
} | ||
} | ||
} | ||
} |
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