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Elasticsearch subproject :modules:transport-netty4
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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 org.elasticsearch.http.netty4;
import com.carrotsearch.hppc.IntHashSet;
import com.carrotsearch.hppc.IntSet;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.AdaptiveRecvByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.FixedRecvByteBufAllocator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.http.HttpContentCompressor;
import io.netty.handler.codec.http.HttpContentDecompressor;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.timeout.ReadTimeoutException;
import io.netty.handler.timeout.ReadTimeoutHandler;
import org.apache.logging.log4j.message.ParameterizedMessage;
import org.apache.logging.log4j.util.Supplier;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.component.AbstractLifecycleComponent;
import org.elasticsearch.common.network.NetworkAddress;
import org.elasticsearch.common.network.NetworkService;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Setting.Property;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.BoundTransportAddress;
import org.elasticsearch.common.transport.NetworkExceptionHelper;
import org.elasticsearch.common.transport.PortsRange;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.common.util.concurrent.EsExecutors;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.http.BindHttpException;
import org.elasticsearch.http.HttpInfo;
import org.elasticsearch.http.HttpServerTransport;
import org.elasticsearch.http.HttpStats;
import org.elasticsearch.http.netty4.cors.Netty4CorsConfig;
import org.elasticsearch.http.netty4.cors.Netty4CorsConfigBuilder;
import org.elasticsearch.http.netty4.cors.Netty4CorsHandler;
import org.elasticsearch.http.netty4.pipelining.HttpPipeliningHandler;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestUtils;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.BindTransportException;
import org.elasticsearch.transport.netty4.Netty4OpenChannelsHandler;
import org.elasticsearch.transport.netty4.Netty4Utils;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import java.util.regex.Pattern;
import static org.elasticsearch.common.settings.Setting.byteSizeSetting;
import static org.elasticsearch.common.util.concurrent.EsExecutors.daemonThreadFactory;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_ALLOW_CREDENTIALS;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_ALLOW_HEADERS;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_ALLOW_METHODS;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_ALLOW_ORIGIN;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_ENABLED;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_CORS_MAX_AGE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_BIND_HOST;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_COMPRESSION;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_COMPRESSION_LEVEL;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_DETAILED_ERRORS_ENABLED;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_MAX_CHUNK_SIZE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_MAX_CONTENT_LENGTH;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_MAX_HEADER_SIZE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_MAX_INITIAL_LINE_LENGTH;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_PORT;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_PUBLISH_HOST;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_PUBLISH_PORT;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_READ_TIMEOUT;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_RESET_COOKIES;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_TCP_KEEP_ALIVE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_TCP_NO_DELAY;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_TCP_RECEIVE_BUFFER_SIZE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_TCP_REUSE_ADDRESS;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_HTTP_TCP_SEND_BUFFER_SIZE;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_PIPELINING;
import static org.elasticsearch.http.HttpTransportSettings.SETTING_PIPELINING_MAX_EVENTS;
import static org.elasticsearch.http.netty4.cors.Netty4CorsHandler.ANY_ORIGIN;
public class Netty4HttpServerTransport extends AbstractLifecycleComponent implements HttpServerTransport {
static {
Netty4Utils.setup();
}
public static Setting SETTING_HTTP_NETTY_MAX_COMPOSITE_BUFFER_COMPONENTS =
Setting.intSetting("http.netty.max_composite_buffer_components", -1, Property.NodeScope);
public static final Setting SETTING_HTTP_WORKER_COUNT = new Setting<>("http.netty.worker_count",
(s) -> Integer.toString(EsExecutors.numberOfProcessors(s) * 2),
(s) -> Setting.parseInt(s, 1, "http.netty.worker_count"), Property.NodeScope);
public static final Setting SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE =
Setting.byteSizeSetting("http.netty.receive_predictor_size", new ByteSizeValue(64, ByteSizeUnit.KB), Property.NodeScope);
/**
* @deprecated This (undocumented) setting is deprecated to reduce complexity and is removed in 7.0. See #26165 for details.
*/
@Deprecated
public static final Setting SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MIN =
byteSizeSetting("http.netty.receive_predictor_min", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE,
Property.NodeScope, Property.Deprecated);
/**
* @deprecated This (undocumented) setting is deprecated to reduce complexity and is removed in 7.0. See #26165 for details.
*/
@Deprecated
public static final Setting SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MAX =
byteSizeSetting("http.netty.receive_predictor_max", SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_SIZE,
Property.NodeScope, Property.Deprecated);
protected final NetworkService networkService;
protected final BigArrays bigArrays;
protected final ByteSizeValue maxContentLength;
protected final ByteSizeValue maxInitialLineLength;
protected final ByteSizeValue maxHeaderSize;
protected final ByteSizeValue maxChunkSize;
protected final int workerCount;
protected final boolean pipelining;
protected final int pipeliningMaxEvents;
protected final boolean compression;
protected final int compressionLevel;
protected final boolean resetCookies;
protected final PortsRange port;
protected final String bindHosts[];
protected final String publishHosts[];
protected final boolean detailedErrorsEnabled;
protected final ThreadPool threadPool;
/**
* The registry used to construct parsers so they support {@link XContentParser#namedObject(Class, String, Object)}.
*/
protected final NamedXContentRegistry xContentRegistry;
protected final boolean tcpNoDelay;
protected final boolean tcpKeepAlive;
protected final boolean reuseAddress;
protected final ByteSizeValue tcpSendBufferSize;
protected final ByteSizeValue tcpReceiveBufferSize;
protected final RecvByteBufAllocator recvByteBufAllocator;
private final int readTimeoutMillis;
protected final int maxCompositeBufferComponents;
private final Dispatcher dispatcher;
protected volatile ServerBootstrap serverBootstrap;
protected volatile BoundTransportAddress boundAddress;
protected final List serverChannels = new ArrayList<>();
// package private for testing
Netty4OpenChannelsHandler serverOpenChannels;
private final Netty4CorsConfig corsConfig;
public Netty4HttpServerTransport(Settings settings, NetworkService networkService, BigArrays bigArrays, ThreadPool threadPool,
NamedXContentRegistry xContentRegistry, Dispatcher dispatcher) {
super(settings);
// done by Cassandra
//Netty4Utils.setAvailableProcessors(EsExecutors.PROCESSORS_SETTING.get(settings));
this.networkService = networkService;
this.bigArrays = bigArrays;
this.threadPool = threadPool;
this.xContentRegistry = xContentRegistry;
this.dispatcher = dispatcher;
ByteSizeValue maxContentLength = SETTING_HTTP_MAX_CONTENT_LENGTH.get(settings);
this.maxChunkSize = SETTING_HTTP_MAX_CHUNK_SIZE.get(settings);
this.maxHeaderSize = SETTING_HTTP_MAX_HEADER_SIZE.get(settings);
this.maxInitialLineLength = SETTING_HTTP_MAX_INITIAL_LINE_LENGTH.get(settings);
this.resetCookies = SETTING_HTTP_RESET_COOKIES.get(settings);
this.maxCompositeBufferComponents = SETTING_HTTP_NETTY_MAX_COMPOSITE_BUFFER_COMPONENTS.get(settings);
this.workerCount = SETTING_HTTP_WORKER_COUNT.get(settings);
this.port = SETTING_HTTP_PORT.get(settings);
// we can't make the network.bind_host a fallback since we already fall back to http.host hence the extra conditional here
List httpBindHost = SETTING_HTTP_BIND_HOST.get(settings);
this.bindHosts = (httpBindHost.isEmpty() ? NetworkService.GLOBAL_NETWORK_BINDHOST_SETTING.get(settings) : httpBindHost)
.toArray(Strings.EMPTY_ARRAY);
// we can't make the network.publish_host a fallback since we already fall back to http.host hence the extra conditional here
List httpPublishHost = SETTING_HTTP_PUBLISH_HOST.get(settings);
this.publishHosts = (httpPublishHost.isEmpty() ? NetworkService.GLOBAL_NETWORK_PUBLISHHOST_SETTING.get(settings) : httpPublishHost)
.toArray(Strings.EMPTY_ARRAY);
this.tcpNoDelay = SETTING_HTTP_TCP_NO_DELAY.get(settings);
this.tcpKeepAlive = SETTING_HTTP_TCP_KEEP_ALIVE.get(settings);
this.reuseAddress = SETTING_HTTP_TCP_REUSE_ADDRESS.get(settings);
this.tcpSendBufferSize = SETTING_HTTP_TCP_SEND_BUFFER_SIZE.get(settings);
this.tcpReceiveBufferSize = SETTING_HTTP_TCP_RECEIVE_BUFFER_SIZE.get(settings);
this.detailedErrorsEnabled = SETTING_HTTP_DETAILED_ERRORS_ENABLED.get(settings);
this.readTimeoutMillis = Math.toIntExact(SETTING_HTTP_READ_TIMEOUT.get(settings).getMillis());
// See AdaptiveReceiveBufferSizePredictor#DEFAULT_XXX for default values in netty..., we can use higher ones for us, even fixed one
ByteSizeValue receivePredictorMin = SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MIN.get(settings);
ByteSizeValue receivePredictorMax = SETTING_HTTP_NETTY_RECEIVE_PREDICTOR_MAX.get(settings);
if (receivePredictorMax.getBytes() == receivePredictorMin.getBytes()) {
recvByteBufAllocator = new FixedRecvByteBufAllocator(Math.toIntExact(receivePredictorMax.getBytes()));
} else {
recvByteBufAllocator = new AdaptiveRecvByteBufAllocator(
Math.toIntExact(receivePredictorMin.getBytes()),
Math.toIntExact(receivePredictorMin.getBytes()),
Math.toIntExact(receivePredictorMax.getBytes()));
}
this.compression = SETTING_HTTP_COMPRESSION.get(settings);
this.compressionLevel = SETTING_HTTP_COMPRESSION_LEVEL.get(settings);
this.pipelining = SETTING_PIPELINING.get(settings);
this.pipeliningMaxEvents = SETTING_PIPELINING_MAX_EVENTS.get(settings);
this.corsConfig = buildCorsConfig(settings);
// validate max content length
if (maxContentLength.getBytes() > Integer.MAX_VALUE) {
logger.warn("maxContentLength[{}] set to high value, resetting it to [100mb]", maxContentLength);
maxContentLength = new ByteSizeValue(100, ByteSizeUnit.MB);
}
this.maxContentLength = maxContentLength;
logger.debug("using max_chunk_size[{}], max_header_size[{}], max_initial_line_length[{}], max_content_length[{}], " +
"receive_predictor[{}->{}], pipelining[{}], pipelining_max_events[{}]",
maxChunkSize, maxHeaderSize, maxInitialLineLength, this.maxContentLength,
receivePredictorMin, receivePredictorMax, pipelining, pipeliningMaxEvents);
}
public Settings settings() {
return this.settings;
}
@Override
protected void doStart() {
boolean success = false;
try {
this.serverOpenChannels = new Netty4OpenChannelsHandler(logger);
serverBootstrap = new ServerBootstrap();
serverBootstrap.group(new NioEventLoopGroup(workerCount, daemonThreadFactory(settings,
HTTP_SERVER_WORKER_THREAD_NAME_PREFIX)));
serverBootstrap.channel(NioServerSocketChannel.class);
serverBootstrap.childHandler(configureServerChannelHandler());
serverBootstrap.childOption(ChannelOption.TCP_NODELAY, SETTING_HTTP_TCP_NO_DELAY.get(settings));
serverBootstrap.childOption(ChannelOption.SO_KEEPALIVE, SETTING_HTTP_TCP_KEEP_ALIVE.get(settings));
final ByteSizeValue tcpSendBufferSize = SETTING_HTTP_TCP_SEND_BUFFER_SIZE.get(settings);
if (tcpSendBufferSize.getBytes() > 0) {
serverBootstrap.childOption(ChannelOption.SO_SNDBUF, Math.toIntExact(tcpSendBufferSize.getBytes()));
}
final ByteSizeValue tcpReceiveBufferSize = SETTING_HTTP_TCP_RECEIVE_BUFFER_SIZE.get(settings);
if (tcpReceiveBufferSize.getBytes() > 0) {
serverBootstrap.childOption(ChannelOption.SO_RCVBUF, Math.toIntExact(tcpReceiveBufferSize.getBytes()));
}
serverBootstrap.option(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);
serverBootstrap.childOption(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);
final boolean reuseAddress = SETTING_HTTP_TCP_REUSE_ADDRESS.get(settings);
serverBootstrap.option(ChannelOption.SO_REUSEADDR, reuseAddress);
serverBootstrap.childOption(ChannelOption.SO_REUSEADDR, reuseAddress);
this.boundAddress = createBoundHttpAddress();
if (logger.isInfoEnabled()) {
logger.info("{}", boundAddress);
}
success = true;
} finally {
if (success == false) {
doStop(); // otherwise we leak threads since we never moved to started
}
}
}
private BoundTransportAddress createBoundHttpAddress() {
// Bind and start to accept incoming connections.
InetAddress hostAddresses[];
try {
hostAddresses = networkService.resolveBindHostAddresses(bindHosts);
} catch (IOException e) {
throw new BindHttpException("Failed to resolve host [" + Arrays.toString(bindHosts) + "]", e);
}
List boundAddresses = new ArrayList<>(hostAddresses.length);
for (InetAddress address : hostAddresses) {
boundAddresses.add(bindAddress(address));
}
final InetAddress publishInetAddress;
try {
publishInetAddress = networkService.resolvePublishHostAddresses(publishHosts);
} catch (Exception e) {
throw new BindTransportException("Failed to resolve publish address", e);
}
final int publishPort = resolvePublishPort(settings, boundAddresses, publishInetAddress);
final InetSocketAddress publishAddress = new InetSocketAddress(publishInetAddress, publishPort);
return new BoundTransportAddress(boundAddresses.toArray(new TransportAddress[0]), new TransportAddress(publishAddress));
}
// package private for tests
static int resolvePublishPort(Settings settings, List boundAddresses, InetAddress publishInetAddress) {
int publishPort = SETTING_HTTP_PUBLISH_PORT.get(settings);
if (publishPort < 0) {
for (TransportAddress boundAddress : boundAddresses) {
InetAddress boundInetAddress = boundAddress.address().getAddress();
if (boundInetAddress.isAnyLocalAddress() || boundInetAddress.equals(publishInetAddress)) {
publishPort = boundAddress.getPort();
break;
}
}
}
// if no matching boundAddress found, check if there is a unique port for all bound addresses
if (publishPort < 0) {
final IntSet ports = new IntHashSet();
for (TransportAddress boundAddress : boundAddresses) {
ports.add(boundAddress.getPort());
}
if (ports.size() == 1) {
publishPort = ports.iterator().next().value;
}
}
if (publishPort < 0) {
throw new BindHttpException("Failed to auto-resolve http publish port, multiple bound addresses " + boundAddresses +
" with distinct ports and none of them matched the publish address (" + publishInetAddress + "). " +
"Please specify a unique port by setting " + SETTING_HTTP_PORT.getKey() + " or " + SETTING_HTTP_PUBLISH_PORT.getKey());
}
return publishPort;
}
// package private for testing
static Netty4CorsConfig buildCorsConfig(Settings settings) {
if (SETTING_CORS_ENABLED.get(settings) == false) {
return Netty4CorsConfigBuilder.forOrigins().disable().build();
}
String origin = SETTING_CORS_ALLOW_ORIGIN.get(settings);
final Netty4CorsConfigBuilder builder;
if (Strings.isNullOrEmpty(origin)) {
builder = Netty4CorsConfigBuilder.forOrigins();
} else if (origin.equals(ANY_ORIGIN)) {
builder = Netty4CorsConfigBuilder.forAnyOrigin();
} else {
Pattern p = RestUtils.checkCorsSettingForRegex(origin);
if (p == null) {
builder = Netty4CorsConfigBuilder.forOrigins(RestUtils.corsSettingAsArray(origin));
} else {
builder = Netty4CorsConfigBuilder.forPattern(p);
}
}
if (SETTING_CORS_ALLOW_CREDENTIALS.get(settings)) {
builder.allowCredentials();
}
String[] strMethods = Strings.tokenizeToStringArray(SETTING_CORS_ALLOW_METHODS.get(settings), ",");
HttpMethod[] methods = Arrays.asList(strMethods)
.stream()
.map(HttpMethod::valueOf)
.toArray(size -> new HttpMethod[size]);
return builder.allowedRequestMethods(methods)
.maxAge(SETTING_CORS_MAX_AGE.get(settings))
.allowedRequestHeaders(Strings.tokenizeToStringArray(SETTING_CORS_ALLOW_HEADERS.get(settings), ","))
.shortCircuit()
.build();
}
private TransportAddress bindAddress(final InetAddress hostAddress) {
final AtomicReference lastException = new AtomicReference<>();
final AtomicReference boundSocket = new AtomicReference<>();
boolean success = port.iterate(portNumber -> {
try {
synchronized (serverChannels) {
ChannelFuture future = serverBootstrap.bind(new InetSocketAddress(hostAddress, portNumber)).sync();
serverChannels.add(future.channel());
boundSocket.set((InetSocketAddress) future.channel().localAddress());
}
} catch (Exception e) {
lastException.set(e);
return false;
}
return true;
});
if (!success) {
throw new BindHttpException("Failed to bind to [" + port.getPortRangeString() + "]", lastException.get());
}
if (logger.isDebugEnabled()) {
logger.debug("Bound http to address {{}}", NetworkAddress.format(boundSocket.get()));
}
return new TransportAddress(boundSocket.get());
}
@Override
protected void doStop() {
synchronized (serverChannels) {
if (!serverChannels.isEmpty()) {
try {
Netty4Utils.closeChannels(serverChannels);
} catch (IOException e) {
logger.trace("exception while closing channels", e);
}
serverChannels.clear();
}
}
if (serverOpenChannels != null) {
serverOpenChannels.close();
serverOpenChannels = null;
}
if (serverBootstrap != null) {
serverBootstrap.config().group().shutdownGracefully(0, 5, TimeUnit.SECONDS).awaitUninterruptibly();
serverBootstrap = null;
}
}
@Override
protected void doClose() {
}
@Override
public BoundTransportAddress boundAddress() {
return this.boundAddress;
}
@Override
public HttpInfo info() {
BoundTransportAddress boundTransportAddress = boundAddress();
if (boundTransportAddress == null) {
return null;
}
return new HttpInfo(boundTransportAddress, maxContentLength.getBytes());
}
@Override
public HttpStats stats() {
Netty4OpenChannelsHandler channels = serverOpenChannels;
return new HttpStats(channels == null ? 0 : channels.numberOfOpenChannels(), channels == null ? 0 : channels.totalChannels());
}
public Netty4CorsConfig getCorsConfig() {
return corsConfig;
}
void dispatchRequest(final RestRequest request, final RestChannel channel) {
final ThreadContext threadContext = threadPool.getThreadContext();
try (ThreadContext.StoredContext ignore = threadContext.stashContext()) {
dispatcher.dispatchRequest(request, channel, threadContext);
}
}
void dispatchBadRequest(final RestRequest request, final RestChannel channel, final Throwable cause) {
final ThreadContext threadContext = threadPool.getThreadContext();
try (ThreadContext.StoredContext ignore = threadContext.stashContext()) {
dispatcher.dispatchBadRequest(request, channel, threadContext, cause);
}
}
protected void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (cause instanceof ReadTimeoutException) {
if (logger.isTraceEnabled()) {
logger.trace("Read timeout [{}]", ctx.channel().remoteAddress());
}
ctx.channel().close();
} else {
if (!lifecycle.started()) {
// ignore
return;
}
if (!NetworkExceptionHelper.isCloseConnectionException(cause)) {
logger.warn(
(Supplier) () -> new ParameterizedMessage(
"caught exception while handling client http traffic, closing connection {}", ctx.channel()),
cause);
ctx.channel().close();
} else {
logger.debug(
(Supplier) () -> new ParameterizedMessage(
"caught exception while handling client http traffic, closing connection {}", ctx.channel()),
cause);
ctx.channel().close();
}
}
}
public ChannelHandler configureServerChannelHandler() {
return new HttpChannelHandler(this, detailedErrorsEnabled, threadPool.getThreadContext());
}
protected static class HttpChannelHandler extends ChannelInitializer {
private final Netty4HttpServerTransport transport;
private final Netty4HttpRequestHandler requestHandler;
protected HttpChannelHandler(
final Netty4HttpServerTransport transport,
final boolean detailedErrorsEnabled,
final ThreadContext threadContext) {
this.transport = transport;
this.requestHandler = new Netty4HttpRequestHandler(transport, detailedErrorsEnabled, threadContext);
}
@Override
protected void initChannel(Channel ch) throws Exception {
ch.pipeline().addLast("openChannels", transport.serverOpenChannels);
ch.pipeline().addLast("read_timeout", new ReadTimeoutHandler(transport.readTimeoutMillis, TimeUnit.MILLISECONDS));
final HttpRequestDecoder decoder = new HttpRequestDecoder(
Math.toIntExact(transport.maxInitialLineLength.getBytes()),
Math.toIntExact(transport.maxHeaderSize.getBytes()),
Math.toIntExact(transport.maxChunkSize.getBytes()));
decoder.setCumulator(ByteToMessageDecoder.COMPOSITE_CUMULATOR);
ch.pipeline().addLast("decoder", decoder);
ch.pipeline().addLast("decoder_compress", new HttpContentDecompressor());
ch.pipeline().addLast("encoder", new HttpResponseEncoder());
final HttpObjectAggregator aggregator = new HttpObjectAggregator(Math.toIntExact(transport.maxContentLength.getBytes()));
if (transport.maxCompositeBufferComponents != -1) {
aggregator.setMaxCumulationBufferComponents(transport.maxCompositeBufferComponents);
}
ch.pipeline().addLast("aggregator", aggregator);
if (transport.compression) {
ch.pipeline().addLast("encoder_compress", new HttpContentCompressor(transport.compressionLevel));
}
if (SETTING_CORS_ENABLED.get(transport.settings())) {
ch.pipeline().addLast("cors", new Netty4CorsHandler(transport.getCorsConfig()));
}
if (transport.pipelining) {
ch.pipeline().addLast("pipelining", new HttpPipeliningHandler(transport.logger, transport.pipeliningMaxEvents));
}
ch.pipeline().addLast("handler", requestHandler);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
Netty4Utils.maybeDie(cause);
super.exceptionCaught(ctx, cause);
}
}
}
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