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Support NettyConnector & RequestEntityProcessing.BUFFERED
Signed-off-by: jansupol <jan.supol@oracle.com>
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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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|
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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 | ||
| } | ||
|
|
||
| /** | ||
| * Writes the Object to the channel | ||
| * @param object object to be written | ||
| */ | ||
| void write(Object object); | ||
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|
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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; | ||
| private boolean closed = 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 { | ||
| _flush(); | ||
| if (!closed) { | ||
| closed = true; | ||
| writer.getOutputStream().close(); // Jersey automatically closes DelayedOutputStream not this one! | ||
| } | ||
| writer.flush(); | ||
| } | ||
|
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| private void _flush() throws IOException { | ||
| if (!flushed) { | ||
| flushed = true; | ||
| for (Runnable runnable : delayedOps) { | ||
| runnable.run(); | ||
| } | ||
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| if (outputStream.b != null) { | ||
| writer.getOutputStream().write(outputStream.b, outputStream.off, outputStream.len); | ||
| } | ||
| } | ||
| } | ||
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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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