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/*
* Copyright 2012-2020 the original author or authors.
*
* 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
*
* https://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.springframework.boot.web.embedded.tomcat;
import java.io.File;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Valve;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.core.AprLifecycleListener;
import org.apache.catalina.loader.WebappLoader;
import org.apache.catalina.startup.Tomcat;
import org.apache.coyote.AbstractProtocol;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http2.Http2Protocol;
import org.apache.tomcat.util.modeler.Registry;
import org.apache.tomcat.util.scan.StandardJarScanFilter;
import org.springframework.boot.util.LambdaSafe;
import org.springframework.boot.web.reactive.server.AbstractReactiveWebServerFactory;
import org.springframework.boot.web.reactive.server.ReactiveWebServerFactory;
import org.springframework.boot.web.server.WebServer;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.http.server.reactive.TomcatHttpHandlerAdapter;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;
/**
* {@link ReactiveWebServerFactory} that can be used to create a {@link TomcatWebServer}.
*
* @author Brian Clozel
* @author HaiTao Zhang
* @since 2.0.0
*/
public class TomcatReactiveWebServerFactory extends AbstractReactiveWebServerFactory
implements ConfigurableTomcatWebServerFactory {
private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
/**
* The class name of default protocol used.
*/
public static final String DEFAULT_PROTOCOL = "org.apache.coyote.http11.Http11NioProtocol";
private File baseDirectory;
private final List engineValves = new ArrayList<>();
private List contextLifecycleListeners = getDefaultLifecycleListeners();
private Set tomcatContextCustomizers = new LinkedHashSet<>();
private Set tomcatConnectorCustomizers = new LinkedHashSet<>();
private Set> tomcatProtocolHandlerCustomizers = new LinkedHashSet<>();
private final List additionalTomcatConnectors = new ArrayList<>();
private String protocol = DEFAULT_PROTOCOL;
private Charset uriEncoding = DEFAULT_CHARSET;
private int backgroundProcessorDelay;
private boolean disableMBeanRegistry = true;
/**
* Create a new {@link TomcatReactiveWebServerFactory} instance.
*/
public TomcatReactiveWebServerFactory() {
}
/**
* Create a new {@link TomcatReactiveWebServerFactory} that listens for requests using
* the specified port.
* @param port the port to listen on
*/
public TomcatReactiveWebServerFactory(int port) {
super(port);
}
private static List getDefaultLifecycleListeners() {
AprLifecycleListener aprLifecycleListener = new AprLifecycleListener();
return AprLifecycleListener.isAprAvailable() ? new ArrayList<>(Arrays.asList(aprLifecycleListener))
: new ArrayList<>();
}
@Override
public WebServer getWebServer(HttpHandler httpHandler) {
if (this.disableMBeanRegistry) {
Registry.disableRegistry();
}
Tomcat tomcat = new Tomcat();
File baseDir = (this.baseDirectory != null) ? this.baseDirectory : createTempDir("tomcat");
tomcat.setBaseDir(baseDir.getAbsolutePath());
Connector connector = new Connector(this.protocol);
connector.setThrowOnFailure(true);
tomcat.getService().addConnector(connector);
customizeConnector(connector);
tomcat.setConnector(connector);
tomcat.getHost().setAutoDeploy(false);
configureEngine(tomcat.getEngine());
for (Connector additionalConnector : this.additionalTomcatConnectors) {
tomcat.getService().addConnector(additionalConnector);
}
TomcatHttpHandlerAdapter servlet = new TomcatHttpHandlerAdapter(httpHandler);
prepareContext(tomcat.getHost(), servlet);
return getTomcatWebServer(tomcat);
}
private void configureEngine(Engine engine) {
engine.setBackgroundProcessorDelay(this.backgroundProcessorDelay);
for (Valve valve : this.engineValves) {
engine.getPipeline().addValve(valve);
}
}
protected void prepareContext(Host host, TomcatHttpHandlerAdapter servlet) {
File docBase = createTempDir("tomcat-docbase");
TomcatEmbeddedContext context = new TomcatEmbeddedContext();
context.setPath("");
context.setDocBase(docBase.getAbsolutePath());
context.addLifecycleListener(new Tomcat.FixContextListener());
context.setParentClassLoader(ClassUtils.getDefaultClassLoader());
skipAllTldScanning(context);
WebappLoader loader = new WebappLoader();
loader.setLoaderClass(TomcatEmbeddedWebappClassLoader.class.getName());
loader.setDelegate(true);
context.setLoader(loader);
Tomcat.addServlet(context, "httpHandlerServlet", servlet).setAsyncSupported(true);
context.addServletMappingDecoded("/", "httpHandlerServlet");
host.addChild(context);
configureContext(context);
}
private void skipAllTldScanning(TomcatEmbeddedContext context) {
StandardJarScanFilter filter = new StandardJarScanFilter();
filter.setTldSkip("*.jar");
context.getJarScanner().setJarScanFilter(filter);
}
/**
* Configure the Tomcat {@link Context}.
* @param context the Tomcat context
*/
protected void configureContext(Context context) {
this.contextLifecycleListeners.forEach(context::addLifecycleListener);
new DisableReferenceClearingContextCustomizer().customize(context);
this.tomcatContextCustomizers.forEach((customizer) -> customizer.customize(context));
}
protected void customizeConnector(Connector connector) {
int port = Math.max(getPort(), 0);
connector.setPort(port);
if (StringUtils.hasText(getServerHeader())) {
connector.setProperty("server", getServerHeader());
}
if (connector.getProtocolHandler() instanceof AbstractProtocol) {
customizeProtocol((AbstractProtocol) connector.getProtocolHandler());
}
invokeProtocolHandlerCustomizers(connector.getProtocolHandler());
if (getUriEncoding() != null) {
connector.setURIEncoding(getUriEncoding().name());
}
// Don't bind to the socket prematurely if ApplicationContext is slow to start
connector.setProperty("bindOnInit", "false");
if (getSsl() != null && getSsl().isEnabled()) {
customizeSsl(connector);
}
TomcatConnectorCustomizer compression = new CompressionConnectorCustomizer(getCompression());
compression.customize(connector);
for (TomcatConnectorCustomizer customizer : this.tomcatConnectorCustomizers) {
customizer.customize(connector);
}
}
@SuppressWarnings("unchecked")
private void invokeProtocolHandlerCustomizers(ProtocolHandler protocolHandler) {
LambdaSafe.callbacks(TomcatProtocolHandlerCustomizer.class, this.tomcatProtocolHandlerCustomizers,
protocolHandler).invoke((customizer) -> customizer.customize(protocolHandler));
}
private void customizeProtocol(AbstractProtocol protocol) {
if (getAddress() != null) {
protocol.setAddress(getAddress());
}
}
private void customizeSsl(Connector connector) {
new SslConnectorCustomizer(getSsl(), getSslStoreProvider()).customize(connector);
if (getHttp2() != null && getHttp2().isEnabled()) {
connector.addUpgradeProtocol(new Http2Protocol());
}
}
@Override
public void setBaseDirectory(File baseDirectory) {
this.baseDirectory = baseDirectory;
}
@Override
public void setBackgroundProcessorDelay(int delay) {
this.backgroundProcessorDelay = delay;
}
/**
* Set {@link TomcatContextCustomizer}s that should be applied to the Tomcat
* {@link Context}. Calling this method will replace any existing customizers.
* @param tomcatContextCustomizers the customizers to set
*/
public void setTomcatContextCustomizers(Collection tomcatContextCustomizers) {
Assert.notNull(tomcatContextCustomizers, "TomcatContextCustomizers must not be null");
this.tomcatContextCustomizers = new LinkedHashSet<>(tomcatContextCustomizers);
}
/**
* Returns a mutable collection of the {@link TomcatContextCustomizer}s that will be
* applied to the Tomcat {@link Context}.
* @return the listeners that will be applied
*/
public Collection getTomcatContextCustomizers() {
return this.tomcatContextCustomizers;
}
/**
* Add {@link TomcatContextCustomizer}s that should be added to the Tomcat
* {@link Context}.
* @param tomcatContextCustomizers the customizers to add
*/
@Override
public void addContextCustomizers(TomcatContextCustomizer... tomcatContextCustomizers) {
Assert.notNull(tomcatContextCustomizers, "TomcatContextCustomizers must not be null");
this.tomcatContextCustomizers.addAll(Arrays.asList(tomcatContextCustomizers));
}
/**
* Set {@link TomcatConnectorCustomizer}s that should be applied to the Tomcat
* {@link Connector}. Calling this method will replace any existing customizers.
* @param tomcatConnectorCustomizers the customizers to set
*/
public void setTomcatConnectorCustomizers(
Collection tomcatConnectorCustomizers) {
Assert.notNull(tomcatConnectorCustomizers, "TomcatConnectorCustomizers must not be null");
this.tomcatConnectorCustomizers = new LinkedHashSet<>(tomcatConnectorCustomizers);
}
/**
* Add {@link TomcatConnectorCustomizer}s that should be added to the Tomcat
* {@link Connector}.
* @param tomcatConnectorCustomizers the customizers to add
*/
@Override
public void addConnectorCustomizers(TomcatConnectorCustomizer... tomcatConnectorCustomizers) {
Assert.notNull(tomcatConnectorCustomizers, "TomcatConnectorCustomizers must not be null");
this.tomcatConnectorCustomizers.addAll(Arrays.asList(tomcatConnectorCustomizers));
}
/**
* Returns a mutable collection of the {@link TomcatConnectorCustomizer}s that will be
* applied to the Tomcat {@link Connector}.
* @return the customizers that will be applied
*/
public Collection getTomcatConnectorCustomizers() {
return this.tomcatConnectorCustomizers;
}
/**
* Set {@link TomcatProtocolHandlerCustomizer}s that should be applied to the Tomcat
* {@link Connector}. Calling this method will replace any existing customizers.
* @param tomcatProtocolHandlerCustomizers the customizers to set
* @since 2.2.0
*/
public void setTomcatProtocolHandlerCustomizers(
Collection> tomcatProtocolHandlerCustomizers) {
Assert.notNull(tomcatProtocolHandlerCustomizers, "TomcatProtocolHandlerCustomizers must not be null");
this.tomcatProtocolHandlerCustomizers = new LinkedHashSet<>(tomcatProtocolHandlerCustomizers);
}
/**
* Add {@link TomcatProtocolHandlerCustomizer}s that should be added to the Tomcat
* {@link Connector}.
* @param tomcatProtocolHandlerCustomizers the customizers to add
* @since 2.2.0
*/
@Override
public void addProtocolHandlerCustomizers(TomcatProtocolHandlerCustomizer... tomcatProtocolHandlerCustomizers) {
Assert.notNull(tomcatProtocolHandlerCustomizers, "TomcatProtocolHandlerCustomizers must not be null");
this.tomcatProtocolHandlerCustomizers.addAll(Arrays.asList(tomcatProtocolHandlerCustomizers));
}
/**
* Returns a mutable collection of the {@link TomcatProtocolHandlerCustomizer}s that
* will be applied to the Tomcat {@link Connector}.
* @return the customizers that will be applied
* @since 2.2.0
*/
public Collection> getTomcatProtocolHandlerCustomizers() {
return this.tomcatProtocolHandlerCustomizers;
}
/**
* Add {@link Connector}s in addition to the default connector, e.g. for SSL or AJP
* @param connectors the connectors to add
* @since 2.2.0
*/
public void addAdditionalTomcatConnectors(Connector... connectors) {
Assert.notNull(connectors, "Connectors must not be null");
this.additionalTomcatConnectors.addAll(Arrays.asList(connectors));
}
/**
* Returns a mutable collection of the {@link Connector}s that will be added to the
* Tomcat.
* @return the additionalTomcatConnectors
* @since 2.2.0
*/
public List getAdditionalTomcatConnectors() {
return this.additionalTomcatConnectors;
}
@Override
public void addEngineValves(Valve... engineValves) {
Assert.notNull(engineValves, "Valves must not be null");
this.engineValves.addAll(Arrays.asList(engineValves));
}
/**
* Returns a mutable collection of the {@link Valve}s that will be applied to the
* Tomcat {@link Engine}.
* @return the engine valves that will be applied
*/
public List getEngineValves() {
return this.engineValves;
}
/**
* Set the character encoding to use for URL decoding. If not specified 'UTF-8' will
* be used.
* @param uriEncoding the uri encoding to set
*/
@Override
public void setUriEncoding(Charset uriEncoding) {
this.uriEncoding = uriEncoding;
}
/**
* Returns the character encoding to use for URL decoding.
* @return the URI encoding
*/
public Charset getUriEncoding() {
return this.uriEncoding;
}
/**
* Set {@link LifecycleListener}s that should be applied to the Tomcat
* {@link Context}. Calling this method will replace any existing listeners.
* @param contextLifecycleListeners the listeners to set
*/
public void setContextLifecycleListeners(Collection contextLifecycleListeners) {
Assert.notNull(contextLifecycleListeners, "ContextLifecycleListeners must not be null");
this.contextLifecycleListeners = new ArrayList<>(contextLifecycleListeners);
}
/**
* Returns a mutable collection of the {@link LifecycleListener}s that will be applied
* to the Tomcat {@link Context}.
* @return the context lifecycle listeners that will be applied
*/
public Collection getContextLifecycleListeners() {
return this.contextLifecycleListeners;
}
/**
* Add {@link LifecycleListener}s that should be added to the Tomcat {@link Context}.
* @param contextLifecycleListeners the listeners to add
*/
public void addContextLifecycleListeners(LifecycleListener... contextLifecycleListeners) {
Assert.notNull(contextLifecycleListeners, "ContextLifecycleListeners must not be null");
this.contextLifecycleListeners.addAll(Arrays.asList(contextLifecycleListeners));
}
/**
* Factory method called to create the {@link TomcatWebServer}. Subclasses can
* override this method to return a different {@link TomcatWebServer} or apply
* additional processing to the Tomcat server.
* @param tomcat the Tomcat server.
* @return a new {@link TomcatWebServer} instance
*/
protected TomcatWebServer getTomcatWebServer(Tomcat tomcat) {
return new TomcatWebServer(tomcat, getPort() >= 0, getShutdown());
}
/**
* The Tomcat protocol to use when create the {@link Connector}.
* @param protocol the protocol
* @see Connector#Connector(String)
*/
public void setProtocol(String protocol) {
Assert.hasLength(protocol, "Protocol must not be empty");
this.protocol = protocol;
}
/**
* Set whether the factory should disable Tomcat's MBean registry prior to creating
* the server.
* @param disableMBeanRegistry whether to disable the MBean registry
* @since 2.2.0
*/
public void setDisableMBeanRegistry(boolean disableMBeanRegistry) {
this.disableMBeanRegistry = disableMBeanRegistry;
}
}
