74f24a5c19
Motivation: Our http2 child channel implementation was not 100 % complete and had a few bugs. Beside this the performance overhead was non-trivial. Modifications: There are a lot of modifications, the most important.... * Http2FrameCodec extends Http2ConnectionHandler and Http2MultiplexCodec extends Http2FrameCodec to reduce performance heads and inter-dependencies on handlers in the pipeline * Correctly handle outbound flow control for child channels * Support unknow frame types in Http2FrameCodec and Http2MultiplexCodec * Use a consistent way how to create Http2ConnectionHandler, Http2FrameCodec and Http2MultiplexCodec (via a builder) * Remove Http2Codec and Http2CodecBuilder as the user should just use Http2MultipleCodec and Http2MultiplexCodecBuilder now * Smart handling of flushes from child channels to reduce overhead * Reduce object allocations * child channels always use the same EventLoop as the parent Channel to reduce overhead and simplify implementation. * Not extend AbstractChannel for the child channel implementation to reduce overhead in terms of performance and memory usage * Remove Http2FrameStream.managedState(...) as the user of the child channel api should just use Channel.attr(...) Result: Http2MultiplexCodec (and so child channels) and Http2FrameCodec are more correct, faster and more feature complete.
139 lines
3.8 KiB
Java
139 lines
3.8 KiB
Java
/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http2;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.DefaultByteBufHolder;
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import io.netty.buffer.Unpooled;
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import io.netty.util.internal.StringUtil;
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import io.netty.util.internal.UnstableApi;
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@UnstableApi
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public final class DefaultHttp2UnknownFrame extends DefaultByteBufHolder implements Http2UnknownFrame {
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private final byte frameType;
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private final Http2Flags flags;
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private Http2FrameStream stream;
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public DefaultHttp2UnknownFrame(byte frameType, Http2Flags flags) {
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this(frameType, flags, Unpooled.EMPTY_BUFFER);
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}
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public DefaultHttp2UnknownFrame(byte frameType, Http2Flags flags, ByteBuf data) {
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super(data);
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this.frameType = frameType;
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this.flags = flags;
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}
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@Override
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public Http2FrameStream stream() {
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return stream;
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}
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@Override
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public DefaultHttp2UnknownFrame stream(Http2FrameStream stream) {
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this.stream = stream;
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return this;
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}
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@Override
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public byte frameType() {
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return frameType;
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}
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@Override
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public Http2Flags flags() {
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return flags;
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}
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@Override
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public String name() {
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return "UNKNOWN";
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}
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@Override
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public DefaultHttp2UnknownFrame copy() {
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return replace(content().copy());
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}
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@Override
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public DefaultHttp2UnknownFrame duplicate() {
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return replace(content().duplicate());
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}
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@Override
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public DefaultHttp2UnknownFrame retainedDuplicate() {
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return replace(content().retainedDuplicate());
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}
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@Override
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public DefaultHttp2UnknownFrame replace(ByteBuf content) {
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return new DefaultHttp2UnknownFrame(frameType, flags, content).stream(stream());
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}
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@Override
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public DefaultHttp2UnknownFrame retain() {
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super.retain();
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return this;
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}
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@Override
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public DefaultHttp2UnknownFrame retain(int increment) {
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super.retain(increment);
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return this;
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}
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@Override
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public String toString() {
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return StringUtil.simpleClassName(this) + "(frameType=" + frameType() + ", stream=" + stream() +
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", flags=" + flags() + ", content=" + contentToString() + ')';
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}
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@Override
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public DefaultHttp2UnknownFrame touch() {
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super.touch();
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return this;
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}
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@Override
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public DefaultHttp2UnknownFrame touch(Object hint) {
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super.touch(hint);
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return this;
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}
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@Override
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public boolean equals(Object o) {
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if (!(o instanceof DefaultHttp2UnknownFrame)) {
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return false;
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}
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DefaultHttp2UnknownFrame other = (DefaultHttp2UnknownFrame) o;
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return super.equals(other) && flags().equals(other.flags())
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&& frameType() == other.frameType() && (stream() == null && other.stream() == null) ||
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stream().equals(other.stream());
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}
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@Override
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public int hashCode() {
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int hash = super.hashCode();
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hash = hash * 31 + frameType();
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hash = hash * 31 + flags().hashCode();
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if (stream() != null) {
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hash = hash * 31 + stream().hashCode();
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}
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return hash;
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}
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}
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