netty5/codec-http2/src/main/java/io/netty/handler/codec/http2/HttpToHttp2ConnectionHandlerBuilder.java
Carl Mastrangelo 65d8ecc3a0 Use Table lookup for HPACK decoder (#9307)
Motivation:
Table based decoding is fast.

Modification:
Use table based decoding in HPACK decoder, inspired by
https://github.com/python-hyper/hpack/blob/master/hpack/huffman_table.py

This modifies the table to be based on integers, rather than 3-tuples of
bytes.  This is for two reasons:

1.  It's faster
2.  Using bytes makes the static intializer too big, and doesn't
compile.

Result:
Faster Huffman decoding.  This only seems to help the ascii case, the
other decoding is about the same.

Benchmarks:

```
Before:
Benchmark                     (limitToAscii)  (sensitive)  (size)   Mode  Cnt        Score       Error  Units
HpackDecoderBenchmark.decode            true         true   SMALL  thrpt   20   426293.636 ±  1444.843  ops/s
HpackDecoderBenchmark.decode            true         true  MEDIUM  thrpt   20    57843.738 ±   725.704  ops/s
HpackDecoderBenchmark.decode            true         true   LARGE  thrpt   20     3002.412 ±    16.998  ops/s
HpackDecoderBenchmark.decode            true        false   SMALL  thrpt   20   412339.400 ±  1128.394  ops/s
HpackDecoderBenchmark.decode            true        false  MEDIUM  thrpt   20    58226.870 ±   199.591  ops/s
HpackDecoderBenchmark.decode            true        false   LARGE  thrpt   20     3044.256 ±    10.675  ops/s
HpackDecoderBenchmark.decode           false         true   SMALL  thrpt   20  2082615.030 ±  5929.726  ops/s
HpackDecoderBenchmark.decode           false         true  MEDIUM  thrpt   10   571640.454 ± 26499.229  ops/s
HpackDecoderBenchmark.decode           false         true   LARGE  thrpt   20    92714.555 ±  2292.222  ops/s
HpackDecoderBenchmark.decode           false        false   SMALL  thrpt   20  1745872.421 ±  6788.840  ops/s
HpackDecoderBenchmark.decode           false        false  MEDIUM  thrpt   20   490420.323 ±  2455.431  ops/s
HpackDecoderBenchmark.decode           false        false   LARGE  thrpt   20    84536.200 ±   398.714  ops/s

After(bytes):
Benchmark                     (limitToAscii)  (sensitive)  (size)   Mode  Cnt        Score      Error  Units
HpackDecoderBenchmark.decode            true         true   SMALL  thrpt   20   472649.148 ± 7122.461  ops/s
HpackDecoderBenchmark.decode            true         true  MEDIUM  thrpt   20    66739.638 ±  341.607  ops/s
HpackDecoderBenchmark.decode            true         true   LARGE  thrpt   20     3139.773 ±   24.491  ops/s
HpackDecoderBenchmark.decode            true        false   SMALL  thrpt   20   466933.833 ± 4514.971  ops/s
HpackDecoderBenchmark.decode            true        false  MEDIUM  thrpt   20    66111.778 ±  568.326  ops/s
HpackDecoderBenchmark.decode            true        false   LARGE  thrpt   20     3143.619 ±    3.332  ops/s
HpackDecoderBenchmark.decode           false         true   SMALL  thrpt   20  2109995.177 ± 6203.143  ops/s
HpackDecoderBenchmark.decode           false         true  MEDIUM  thrpt   20   586026.055 ± 1578.550  ops/s
HpackDecoderBenchmark.decode           false        false   SMALL  thrpt   20  1775723.270 ± 4932.057  ops/s
HpackDecoderBenchmark.decode           false        false  MEDIUM  thrpt   20   493316.467 ± 1453.037  ops/s
HpackDecoderBenchmark.decode           false        false   LARGE  thrpt   10    85726.219 ±  402.573  ops/s

After(ints):
Benchmark                     (limitToAscii)  (sensitive)  (size)   Mode  Cnt        Score       Error  Units
HpackDecoderBenchmark.decode            true         true   SMALL  thrpt   20   615549.006 ±  5282.283  ops/s
HpackDecoderBenchmark.decode            true         true  MEDIUM  thrpt   20    86714.630 ±   654.489  ops/s
HpackDecoderBenchmark.decode            true         true   LARGE  thrpt   20     3984.439 ±    61.612  ops/s
HpackDecoderBenchmark.decode            true        false   SMALL  thrpt   20   602489.337 ±  5397.024  ops/s
HpackDecoderBenchmark.decode            true        false  MEDIUM  thrpt   20    88399.109 ±   241.115  ops/s
HpackDecoderBenchmark.decode            true        false   LARGE  thrpt   20     3875.729 ±   103.057  ops/s
HpackDecoderBenchmark.decode           false         true   SMALL  thrpt   20  2092165.454 ± 11918.859  ops/s
HpackDecoderBenchmark.decode           false         true  MEDIUM  thrpt   20   583465.437 ±  5452.115  ops/s
HpackDecoderBenchmark.decode           false         true   LARGE  thrpt   20    93290.061 ±   665.904  ops/s
HpackDecoderBenchmark.decode           false        false   SMALL  thrpt   20  1758402.495 ± 14677.438  ops/s
HpackDecoderBenchmark.decode           false        false  MEDIUM  thrpt   10   491598.099 ±  5029.698  ops/s
HpackDecoderBenchmark.decode           false        false   LARGE  thrpt   20    85834.290 ±   554.915  ops/s
```
2019-07-02 20:13:19 +02:00

105 lines
3.8 KiB
Java

/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.handler.codec.http2;
import io.netty.handler.codec.http2.Http2HeadersEncoder.SensitivityDetector;
import io.netty.util.internal.UnstableApi;
/**
* Builder which builds {@link HttpToHttp2ConnectionHandler} objects.
*/
@UnstableApi
public final class HttpToHttp2ConnectionHandlerBuilder extends
AbstractHttp2ConnectionHandlerBuilder<HttpToHttp2ConnectionHandler, HttpToHttp2ConnectionHandlerBuilder> {
@Override
public HttpToHttp2ConnectionHandlerBuilder validateHeaders(boolean validateHeaders) {
return super.validateHeaders(validateHeaders);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder initialSettings(Http2Settings settings) {
return super.initialSettings(settings);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder frameListener(Http2FrameListener frameListener) {
return super.frameListener(frameListener);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder gracefulShutdownTimeoutMillis(long gracefulShutdownTimeoutMillis) {
return super.gracefulShutdownTimeoutMillis(gracefulShutdownTimeoutMillis);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder server(boolean isServer) {
return super.server(isServer);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder connection(Http2Connection connection) {
return super.connection(connection);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder codec(Http2ConnectionDecoder decoder,
Http2ConnectionEncoder encoder) {
return super.codec(decoder, encoder);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder frameLogger(Http2FrameLogger frameLogger) {
return super.frameLogger(frameLogger);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder encoderEnforceMaxConcurrentStreams(
boolean encoderEnforceMaxConcurrentStreams) {
return super.encoderEnforceMaxConcurrentStreams(encoderEnforceMaxConcurrentStreams);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder headerSensitivityDetector(
SensitivityDetector headerSensitivityDetector) {
return super.headerSensitivityDetector(headerSensitivityDetector);
}
@Override
@Deprecated
public HttpToHttp2ConnectionHandlerBuilder initialHuffmanDecodeCapacity(int initialHuffmanDecodeCapacity) {
return super.initialHuffmanDecodeCapacity(initialHuffmanDecodeCapacity);
}
@Override
public HttpToHttp2ConnectionHandlerBuilder decoupleCloseAndGoAway(boolean decoupleCloseAndGoAway) {
return super.decoupleCloseAndGoAway(decoupleCloseAndGoAway);
}
@Override
public HttpToHttp2ConnectionHandler build() {
return super.build();
}
@Override
protected HttpToHttp2ConnectionHandler build(Http2ConnectionDecoder decoder, Http2ConnectionEncoder encoder,
Http2Settings initialSettings) {
return new HttpToHttp2ConnectionHandler(decoder, encoder, initialSettings, isValidateHeaders(),
decoupleCloseAndGoAway());
}
}