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io.airlift.http.server.HttpServer Maven / Gradle / Ivy
/*
* Copyright 2010 Proofpoint, Inc.
*
* Licensed 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.airlift.http.server;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import io.airlift.event.client.EventClient;
import io.airlift.http.server.HttpServerBinder.HttpResourceBinding;
import io.airlift.http.server.jetty.MonitoredQueuedThreadPoolMBean;
import io.airlift.log.Logger;
import io.airlift.node.NodeInfo;
import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;
import jakarta.servlet.Filter;
import jakarta.servlet.Servlet;
import org.eclipse.jetty.alpn.server.ALPNServerConnectionFactory;
import org.eclipse.jetty.ee10.servlet.FilterHolder;
import org.eclipse.jetty.ee10.servlet.ServletContextHandler;
import org.eclipse.jetty.ee10.servlet.ServletHolder;
import org.eclipse.jetty.http.UriCompliance;
import org.eclipse.jetty.http2.server.AuthorityCustomizer;
import org.eclipse.jetty.http2.server.HTTP2CServerConnectionFactory;
import org.eclipse.jetty.http2.server.HTTP2ServerConnectionFactory;
import org.eclipse.jetty.io.ConnectionStatistics;
import org.eclipse.jetty.jmx.MBeanContainer;
import org.eclipse.jetty.server.ConnectionFactory;
import org.eclipse.jetty.server.ForwardedRequestCustomizer;
import org.eclipse.jetty.server.HostHeaderCustomizer;
import org.eclipse.jetty.server.HttpConfiguration;
import org.eclipse.jetty.server.HttpConnectionFactory;
import org.eclipse.jetty.server.SecureRequestCustomizer;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.SslConnectionFactory;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.handler.ErrorHandler;
import org.eclipse.jetty.server.handler.EventsHandler;
import org.eclipse.jetty.server.handler.StatisticsHandler;
import org.eclipse.jetty.server.handler.gzip.GzipHandler;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import org.eclipse.jetty.util.thread.MonitoredQueuedThreadPool;
import org.weakref.jmx.Managed;
import org.weakref.jmx.Nested;
import javax.management.MBeanServer;
import java.io.File;
import java.io.IOException;
import java.nio.channels.ServerSocketChannel;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.EnumSet;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.ScheduledExecutorService;
import static com.google.common.base.MoreObjects.firstNonNull;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import static com.google.common.base.Verify.verify;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static io.airlift.concurrent.Threads.daemonThreadsNamed;
import static java.lang.Math.toIntExact;
import static java.lang.String.format;
import static java.time.temporal.ChronoUnit.DAYS;
import static java.util.Collections.list;
import static java.util.Comparator.naturalOrder;
import static java.util.Objects.requireNonNull;
import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor;
import static org.eclipse.jetty.http.UriCompliance.Violation.AMBIGUOUS_PATH_ENCODING;
import static org.eclipse.jetty.http.UriCompliance.Violation.AMBIGUOUS_PATH_SEPARATOR;
import static org.eclipse.jetty.http.UriCompliance.Violation.SUSPICIOUS_PATH_CHARACTERS;
import static org.eclipse.jetty.util.VirtualThreads.getNamedVirtualThreadsExecutor;
public class HttpServer
{
public enum ClientCertificate
{
NONE, REQUESTED, REQUIRED
}
private static final Logger log = Logger.get(HttpServer.class);
private final Server server;
private final MonitoredQueuedThreadPoolMBean monitoredQueuedThreadPoolMBean;
private final DelimitedRequestLog requestLog;
private ConnectionStats httpConnectionStats;
private ConnectionStats httpsConnectionStats;
private ScheduledExecutorService scheduledExecutorService;
private Optional sslContextFactory;
public HttpServer(
HttpServerInfo httpServerInfo,
NodeInfo nodeInfo,
HttpServerConfig config,
Optional maybeHttpsConfig,
Servlet servlet,
Set filters,
Set resources,
boolean enableVirtualThreads,
boolean enableLegacyUriCompliance,
boolean enableCaseSensitiveHeaderCache,
ClientCertificate clientCertificate,
MBeanServer mbeanServer,
RequestStats stats,
EventClient eventClient,
Optional maybeSslContextFactory)
throws IOException
{
requireNonNull(httpServerInfo, "httpServerInfo is null");
requireNonNull(nodeInfo, "nodeInfo is null");
requireNonNull(config, "config is null");
requireNonNull(maybeHttpsConfig, "httpsConfig is null");
requireNonNull(servlet, "servlet is null");
requireNonNull(maybeSslContextFactory, "maybeSslContextFactory is null");
requireNonNull(clientCertificate, "clientCertificate is null");
checkArgument(!config.isHttpsEnabled() || maybeHttpsConfig.isPresent(), "httpsConfig must be present when HTTPS is enabled");
MonitoredQueuedThreadPool threadPool = new MonitoredQueuedThreadPool(config.getMaxThreads());
threadPool.setMinThreads(config.getMinThreads());
threadPool.setIdleTimeout(toIntExact(config.getThreadMaxIdleTime().toMillis()));
threadPool.setName("http-worker");
threadPool.setDetailedDump(true);
if (enableVirtualThreads) {
Executor executor = getNamedVirtualThreadsExecutor("http-worker#v");
verify(executor != null, "Could not create virtual threads executor");
log.info("Virtual threads support is enabled");
threadPool.setVirtualThreadsExecutor(executor);
}
server = new Server(threadPool);
this.monitoredQueuedThreadPoolMBean = new MonitoredQueuedThreadPoolMBean(threadPool);
boolean showStackTrace = config.isShowStackTrace();
boolean enableCompression = config.isCompressionEnabled();
this.sslContextFactory = maybeSslContextFactory;
if (mbeanServer != null) {
// export jmx mbeans if a server was provided
MBeanContainer mbeanContainer = new MBeanContainer(mbeanServer);
server.addBean(mbeanContainer);
}
HttpConfiguration baseHttpConfiguration = new HttpConfiguration();
baseHttpConfiguration.setSendServerVersion(false);
baseHttpConfiguration.setSendXPoweredBy(false);
baseHttpConfiguration.setNotifyRemoteAsyncErrors(true); // Pass remote exceptions to AsyncContext
baseHttpConfiguration.addCustomizer(switch (config.getProcessForwarded()) {
case REJECT -> new RejectForwardedRequestCustomizer();
case ACCEPT -> new ForwardedRequestCustomizer();
case IGNORE -> new IgnoreForwardedRequestCustomizer();
});
// Adds :authority pseudoheader on HTTP/2
baseHttpConfiguration.addCustomizer(new AuthorityCustomizer());
// Adds :host header on HTTP/1.0 and HTTP/2
baseHttpConfiguration.addCustomizer(new HostHeaderCustomizer());
if (config.getMaxRequestHeaderSize() != null) {
baseHttpConfiguration.setRequestHeaderSize(toIntExact(config.getMaxRequestHeaderSize().toBytes()));
}
if (config.getMaxResponseHeaderSize() != null) {
baseHttpConfiguration.setResponseHeaderSize(toIntExact(config.getMaxResponseHeaderSize().toBytes()));
}
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=414449#c4
baseHttpConfiguration.setHeaderCacheCaseSensitive(enableCaseSensitiveHeaderCache);
if (enableLegacyUriCompliance) {
// allow encoded slashes to occur in URI paths
UriCompliance uriCompliance = UriCompliance.from(EnumSet.of(AMBIGUOUS_PATH_SEPARATOR, AMBIGUOUS_PATH_ENCODING, SUSPICIOUS_PATH_CHARACTERS));
baseHttpConfiguration.setUriCompliance(uriCompliance);
}
// set up HTTP connector
ServerConnector httpConnector;
if (config.isHttpEnabled()) {
HttpConfiguration httpConfiguration = new HttpConfiguration(baseHttpConfiguration);
// if https is enabled, set the CONFIDENTIAL and INTEGRAL redirection information
if (config.isHttpsEnabled()) {
httpConfiguration.setSecureScheme("https");
httpConfiguration.setSecurePort(httpServerInfo.getHttpsUri().getPort());
}
Integer acceptors = config.getHttpAcceptorThreads();
Integer selectors = config.getHttpSelectorThreads();
httpConnector = createServerConnector(
httpServerInfo.getHttpChannel(),
server,
null,
firstNonNull(acceptors, -1),
firstNonNull(selectors, -1),
insecureFactories(config, httpConfiguration));
httpConnector.setName("http");
httpConnector.setPort(httpServerInfo.getHttpUri().getPort());
httpConnector.setIdleTimeout(config.getNetworkMaxIdleTime().toMillis());
httpConnector.setHost(nodeInfo.getBindIp().getHostAddress());
httpConnector.setAcceptQueueSize(config.getHttpAcceptQueueSize());
// track connection statistics
ConnectionStatistics connectionStats = new ConnectionStatistics();
httpConnector.addBean(connectionStats);
this.httpConnectionStats = new ConnectionStats(connectionStats);
server.addConnector(httpConnector);
}
// set up NIO-based HTTPS connector
ServerConnector httpsConnector;
if (config.isHttpsEnabled()) {
HttpConfiguration httpsConfiguration = new HttpConfiguration(baseHttpConfiguration);
setSecureRequestCustomizer(httpsConfiguration);
HttpsConfig httpsConfig = maybeHttpsConfig.orElseThrow();
this.sslContextFactory = Optional.of(this.sslContextFactory.orElseGet(() -> createReloadingSslContextFactory(httpsConfig, clientCertificate, nodeInfo.getEnvironment())));
Integer acceptors = config.getHttpsAcceptorThreads();
Integer selectors = config.getHttpsSelectorThreads();
httpsConnector = createServerConnector(
httpServerInfo.getHttpsChannel(),
server,
null,
firstNonNull(acceptors, -1),
firstNonNull(selectors, -1),
secureFactories(config, httpsConfiguration, sslContextFactory.get()));
httpsConnector.setName("https");
httpsConnector.setPort(httpServerInfo.getHttpsUri().getPort());
httpsConnector.setIdleTimeout(config.getNetworkMaxIdleTime().toMillis());
httpsConnector.setHost(nodeInfo.getBindIp().getHostAddress());
httpsConnector.setAcceptQueueSize(config.getHttpAcceptQueueSize());
// track connection statistics
ConnectionStatistics connectionStats = new ConnectionStatistics();
httpsConnector.addBean(connectionStats);
this.httpsConnectionStats = new ConnectionStats(connectionStats);
server.addConnector(httpsConnector);
}
/*
* structure is:
*
*
* channel listener
* |--- statistics handler
* |--- context handler
* | |--- trace token filter
* | |--- gzip response filter
* | |--- gzip request filter
* | |--- user provided filters
* | |--- the servlet (normally GuiceContainer)
* | |--- resource handlers
* |--- log handler
*/
// add handlers to Jetty
StatisticsHandler statsHandler = new StatisticsHandler();
statsHandler.setHandler(createServletContext(servlet, resources, filters, Set.of("http", "https"), showStackTrace, enableLegacyUriCompliance, enableCompression));
ContextHandlerCollection rootHandlers = new ContextHandlerCollection();
rootHandlers.addHandler(statsHandler);
if (config.isLogEnabled()) {
this.requestLog = createDelimitedRequestLog(config, eventClient);
}
else {
this.requestLog = null;
}
DispatchingRequestLogHandler dispatchingHandler = new DispatchingRequestLogHandler(requestLog, stats);
EventsHandler eventsHandler = new RequestTimingEventHandler(rootHandlers);
server.setRequestLog(dispatchingHandler);
server.setHandler(eventsHandler);
ErrorHandler errorHandler = new ErrorHandler();
errorHandler.setShowMessageInTitle(showStackTrace);
errorHandler.setShowStacks(showStackTrace);
server.setErrorHandler(errorHandler);
}
private ConnectionFactory[] insecureFactories(HttpServerConfig config, HttpConfiguration httpConfiguration)
{
HttpConnectionFactory http1 = new HttpConnectionFactory(httpConfiguration);
HTTP2CServerConnectionFactory http2c = new HTTP2CServerConnectionFactory(httpConfiguration);
http2c.setInitialSessionRecvWindow(toIntExact(config.getHttp2InitialSessionReceiveWindowSize().toBytes()));
http2c.setInitialStreamRecvWindow(toIntExact(config.getHttp2InitialStreamReceiveWindowSize().toBytes()));
http2c.setMaxConcurrentStreams(config.getHttp2MaxConcurrentStreams());
http2c.setInputBufferSize(toIntExact(config.getHttp2InputBufferSize().toBytes()));
http2c.setStreamIdleTimeout(config.getHttp2StreamIdleTimeout().toMillis());
return new ConnectionFactory[] {http1, http2c};
}
private ConnectionFactory[] secureFactories(HttpServerConfig config, HttpConfiguration httpsConfiguration, SslContextFactory.Server server)
{
ConnectionFactory http1 = new HttpConnectionFactory(httpsConfiguration);
ALPNServerConnectionFactory alpn = new ALPNServerConnectionFactory();
alpn.setDefaultProtocol(http1.getProtocol());
SslConnectionFactory tls = new SslConnectionFactory(server, alpn.getProtocol());
HTTP2ServerConnectionFactory http2 = new HTTP2ServerConnectionFactory(httpsConfiguration);
http2.setInitialSessionRecvWindow(toIntExact(config.getHttp2InitialSessionReceiveWindowSize().toBytes()));
http2.setInitialStreamRecvWindow(toIntExact(config.getHttp2InitialStreamReceiveWindowSize().toBytes()));
http2.setMaxConcurrentStreams(config.getHttp2MaxConcurrentStreams());
http2.setInputBufferSize(toIntExact(config.getHttp2InputBufferSize().toBytes()));
http2.setStreamIdleTimeout(config.getHttp2StreamIdleTimeout().toMillis());
return new ConnectionFactory[] {tls, alpn, http2, http1};
}
private static void setSecureRequestCustomizer(HttpConfiguration configuration)
{
configuration.setCustomizers(ImmutableList.builder()
.add(new SecureRequestCustomizer(false))
.addAll(configuration.getCustomizers())
.build());
}
private static ServletContextHandler createServletContext(Servlet servlet,
Set resources,
Set filters,
Set connectorNames,
boolean showStackTrace,
boolean enableLegacyUriCompliance,
boolean enableCompression)
{
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
ErrorHandler handler = new ErrorHandler();
handler.setShowStacks(showStackTrace);
handler.setShowMessageInTitle(showStackTrace);
context.setErrorHandler(handler);
if (enableLegacyUriCompliance) {
// allow encoded slashes to occur in URI paths
context.getServletHandler().setDecodeAmbiguousURIs(true);
}
// -- user provided filters
for (Filter filter : filters) {
context.addFilter(new FilterHolder(filter), "/*", null);
}
// -- static resources
for (HttpResourceBinding resource : resources) {
ClassPathResourceFilter filter = new ClassPathResourceFilter(
resource.getBaseUri(),
resource.getClassPathResourceBase(),
resource.getWelcomeFiles());
context.addFilter(new FilterHolder(filter), filter.getBaseUri() + "/*", null);
}
if (enableCompression) {
// -- gzip handler
context.insertHandler(new GzipHandler());
}
// -- the servlet
ServletHolder servletHolder = new ServletHolder(servlet);
context.addServlet(servletHolder, "/*");
// Starting with Jetty 9 there is no way to specify connectors directly, but
// there is this wonky @ConnectorName virtual hosts automatically added
List virtualHosts = connectorNames.stream()
.map(connectorName -> "@" + connectorName)
.collect(toImmutableList());
context.setVirtualHosts(virtualHosts);
return context;
}
private static DelimitedRequestLog createDelimitedRequestLog(HttpServerConfig config, EventClient eventClient)
throws IOException
{
File logFile = new File(config.getLogPath());
if (logFile.exists() && !logFile.isFile()) {
throw new IOException(format("Log path %s exists but is not a file", logFile.getAbsolutePath()));
}
File logPath = logFile.getParentFile();
if (!logPath.mkdirs() && !logPath.exists()) {
throw new IOException(format("Cannot create %s and path does not already exist", logPath.getAbsolutePath()));
}
return new DelimitedRequestLog(
config.getLogPath(),
config.getLogHistory(),
config.getLogQueueSize(),
config.getLogMaxFileSize().toBytes(),
eventClient,
config.isLogCompressionEnabled());
}
@VisibleForTesting
Set getCertificates()
{
ImmutableSet.Builder certificates = ImmutableSet.builder();
this.sslContextFactory.ifPresent(factory -> {
try {
KeyStore keystore = factory.getKeyStore();
for (String alias : list(keystore.aliases())) {
Certificate certificate = keystore.getCertificate(alias);
if (certificate instanceof X509Certificate) {
certificates.add((X509Certificate) certificate);
}
}
}
catch (Exception e) {
log.error(e, "Error reading certificates");
}
});
return certificates.build();
}
@Managed
public Long getDaysUntilCertificateExpiration()
{
return getCertificates().stream()
.map(X509Certificate::getNotAfter)
.min(naturalOrder())
.map(date -> ZonedDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault()))
.map(date -> ZonedDateTime.now().until(date, DAYS))
.orElse(null);
}
@Managed
@Nested
public ConnectionStats getHttpConnectionStats()
{
return httpConnectionStats;
}
@Managed
@Nested
public ConnectionStats getHttpsConnectionStats()
{
return httpsConnectionStats;
}
@Managed
@Nested
public MonitoredQueuedThreadPoolMBean getServerThreadPool()
{
return monitoredQueuedThreadPoolMBean;
}
@Managed
public int getLoggerQueueSize()
{
if (requestLog == null) {
return 0;
}
return requestLog.getQueueSize();
}
@PostConstruct
public void start()
throws Exception
{
server.start();
checkState(server.isStarted(), "server is not started");
}
@PreDestroy
public void stop()
throws Exception
{
server.setStopTimeout(0);
server.stop();
if (scheduledExecutorService != null) {
scheduledExecutorService.shutdown();
}
if (requestLog != null) {
requestLog.stop();
}
}
@VisibleForTesting
void join()
throws InterruptedException
{
server.join();
}
private SslContextFactory.Server createReloadingSslContextFactory(HttpsConfig config, ClientCertificate clientCertificate, String environment)
{
if (scheduledExecutorService == null) {
scheduledExecutorService = newSingleThreadScheduledExecutor(daemonThreadsNamed("HttpServerScheduler"));
}
return new ReloadableSslContextFactoryProvider(config, scheduledExecutorService, clientCertificate, environment).getSslContextFactory();
}
private static ServerConnector createServerConnector(
ServerSocketChannel channel,
Server server,
Executor executor,
int acceptors,
int selectors,
ConnectionFactory... factories)
throws IOException
{
ServerConnector connector = new ServerConnector(server, executor, null, null, acceptors, selectors, factories);
connector.open(channel);
return connector;
}
}
