/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* 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 org.apache.catalina.core;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.URL;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.DefaultContext;
import org.apache.catalina.Deployer;
import org.apache.catalina.Host;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.Valve;
import org.apache.catalina.valves.ValveBase;
import org.apache.commons.modeler.Registry;
/**
* Standard implementation of the <b>Host</b> interface. Each
* child container must be a Context implementation to process the
* requests directed to a particular web application.
*
* @author Craig R. McClanahan
* @author Remy Maucherat
* @version $Revision: 1.29 $ $Date: 2004/02/27 14:58:42 $
*/
public class StandardHost
extends ContainerBase
implements Deployer, Host
{
/* Why do we implement deployer and delegate to deployer ??? */
private static org.apache.commons.logging.Log log=
org.apache.commons.logging.LogFactory.getLog( StandardHost.class );
// ----------------------------------------------------------- Constructors
/**
* Create a new StandardHost component with the default basic Valve.
*/
public StandardHost() {
super();
pipeline.setBasic(new StandardHostValve());
}
// ----------------------------------------------------- Instance Variables
/**
* The set of aliases for this Host.
*/
private String[] aliases = new String[0];
/**
* The application root for this Host.
*/
private String appBase = ".";
/**
* The auto deploy flag for this Host.
*/
private boolean autoDeploy = true;
/**
* The Java class name of the default context configuration class
* for deployed web applications.
*/
private String configClass =
"org.apache.catalina.startup.ContextConfig";
/**
* The Java class name of the default Context implementation class for
* deployed web applications.
*/
private String contextClass =
"org.apache.catalina.core.StandardContext";
/**
* The <code>Deployer</code> to whom we delegate application
* deployment requests.
*/
private Deployer deployer = null;
/**
* The deploy on startup flag for this Host.
*/
private boolean deployOnStartup = true;
/**
* deploy Context XML config files property.
*/
private boolean deployXML = true;
/**
* The Java class name of the default error reporter implementation class
* for deployed web applications.
*/
private String errorReportValveClass =
"org.apache.catalina.valves.ErrorReportValve";
/**
* The object name for the errorReportValve.
*/
private ObjectName errorReportValveObjectName = null;
/**
* The descriptive information string for this implementation.
*/
private static final String info =
"org.apache.catalina.core.StandardHost/1.0";
/**
* The live deploy flag for this Host.
*/
private boolean liveDeploy = true;
/**
* Unpack WARs property.
*/
private boolean unpackWARs = true;
/**
* Work Directory base for applications.
*/
private String workDir = null;
/**
* DefaultContext config
*/
private DefaultContext defaultContext;
/**
* Attribute value used to turn on/off XML validation
*/
private boolean xmlValidation = false;
/**
* Attribute value used to turn on/off XML namespace awarenes.
*/
private boolean xmlNamespaceAware = false;
// ------------------------------------------------------------- Properties
/**
* Return the application root for this Host. This can be an absolute
* pathname, a relative pathname, or a URL.
*/
public String getAppBase() {
return (this.appBase);
}
/**
* Set the application root for this Host. This can be an absolute
* pathname, a relative pathname, or a URL.
*
* @param appBase The new application root
*/
public void setAppBase(String appBase) {
String oldAppBase = this.appBase;
this.appBase = appBase;
support.firePropertyChange("appBase", oldAppBase, this.appBase);
}
/**
* Return the value of the auto deploy flag. If true, it indicates that
* this host's child webapps will be dynamically deployed.
*/
public boolean getAutoDeploy() {
return (this.autoDeploy);
}
/**
* Set the auto deploy flag value for this host.
*
* @param autoDeploy The new auto deploy flag
*/
public void setAutoDeploy(boolean autoDeploy) {
boolean oldAutoDeploy = this.autoDeploy;
this.autoDeploy = autoDeploy;
support.firePropertyChange("autoDeploy", oldAutoDeploy,
this.autoDeploy);
}
/**
* Return the Java class name of the context configuration class
* for new web applications.
*/
public String getConfigClass() {
return (this.configClass);
}
/**
* Set the Java class name of the context configuration class
* for new web applications.
*
* @param configClass The new context configuration class
*/
public void setConfigClass(String configClass) {
String oldConfigClass = this.configClass;
this.configClass = configClass;
support.firePropertyChange("configClass",
oldConfigClass, this.configClass);
}
/**
* Set the DefaultContext
* for new web applications.
*
* @param defaultContext The new DefaultContext
*/
public void addDefaultContext(DefaultContext defaultContext) {
DefaultContext oldDefaultContext = this.defaultContext;
this.defaultContext = defaultContext;
support.firePropertyChange("defaultContext",
oldDefaultContext, this.defaultContext);
}
/**
* Retrieve the DefaultContext for new web applications.
*/
public DefaultContext getDefaultContext() {
return (this.defaultContext);
}
/**
* Return the Java class name of the Context implementation class
* for new web applications.
*/
public String getContextClass() {
return (this.contextClass);
}
/**
* Set the Java class name of the Context implementation class
* for new web applications.
*
* @param contextClass The new context implementation class
*/
public void setContextClass(String contextClass) {
String oldContextClass = this.contextClass;
this.contextClass = contextClass;
support.firePropertyChange("contextClass",
oldContextClass, this.contextClass);
}
/**
* Return the value of the deploy on startup flag. If true, it indicates
* that this host's child webapps should be discovred and automatically
* deployed at startup time.
*/
public boolean getDeployOnStartup() {
return (this.deployOnStartup);
}
/**
* Set the deploy on startup flag value for this host.
*
* @param autoDeploy The new deploy on startup flag
*/
public void setDeployOnStartup(boolean deployOnStartup) {
boolean oldDeployOnStartup = this.deployOnStartup;
this.deployOnStartup = deployOnStartup;
support.firePropertyChange("deployOnStartup", oldDeployOnStartup,
this.deployOnStartup);
}
/**
* Deploy XML Context config files flag accessor.
*/
public boolean isDeployXML() {
return (deployXML);
}
/**
* Deploy XML Context config files flag mutator.
*/
public void setDeployXML(boolean deployXML) {
this.deployXML = deployXML;
}
/**
* Return the value of the live deploy flag. If true, it indicates that
* a background thread should be started that looks for web application
* context files, WAR files, or unpacked directories being dropped in to
* the <code>appBase</code> directory, and deploys new ones as they are
* encountered.
*/
public boolean getLiveDeploy() {
return (this.autoDeploy);
}
/**
* Set the live deploy flag value for this host.
*
* @param liveDeploy The new live deploy flag
*/
public void setLiveDeploy(boolean liveDeploy) {
setAutoDeploy(liveDeploy);
}
/**
* Return the Java class name of the error report valve class
* for new web applications.
*/
public String getErrorReportValveClass() {
return (this.errorReportValveClass);
}
/**
* Set the Java class name of the error report valve class
* for new web applications.
*
* @param errorReportValveClass The new error report valve class
*/
public void setErrorReportValveClass(String errorReportValveClass) {
String oldErrorReportValveClassClass = this.errorReportValveClass;
this.errorReportValveClass = errorReportValveClass;
support.firePropertyChange("errorReportValveClass",
oldErrorReportValveClassClass,
this.errorReportValveClass);
}
/**
* Return the canonical, fully qualified, name of the virtual host
* this Container represents.
*/
public String getName() {
return (name);
}
/**
* Set the canonical, fully qualified, name of the virtual host
* this Container represents.
*
* @param name Virtual host name
*
* @exception IllegalArgumentException if name is null
*/
public void setName(String name) {
if (name == null)
throw new IllegalArgumentException
(sm.getString("standardHost.nullName"));
name = name.toLowerCase(); // Internally all names are lower case
String oldName = this.name;
this.name = name;
support.firePropertyChange("name", oldName, this.name);
}
/**
* Unpack WARs flag accessor.
*/
public boolean isUnpackWARs() {
return (unpackWARs);
}
/**
* Unpack WARs flag mutator.
*/
public void setUnpackWARs(boolean unpackWARs) {
this.unpackWARs = unpackWARs;
}
/**
* Set the validation feature of the XML parser used when
* parsing xml instances.
* @param xmlValidation true to enable xml instance validation
*/
public void setXmlValidation(boolean xmlValidation){
this.xmlValidation = xmlValidation;
}
/**
* Get the server.xml <host> attribute's xmlValidation.
* @return true if validation is enabled.
*
*/
public boolean getXmlValidation(){
return xmlValidation;
}
/**
* Get the server.xml <host> attribute's xmlNamespaceAware.
* @return true if namespace awarenes is enabled.
*
*/
public boolean getXmlNamespaceAware(){
return xmlNamespaceAware;
}
/**
* Set the namespace aware feature of the XML parser used when
* parsing xml instances.
* @param xmlNamespaceAware true to enable namespace awareness
*/
public void setXmlNamespaceAware(boolean xmlNamespaceAware){
this.xmlNamespaceAware=xmlNamespaceAware;
}
/**
* Host work directory base.
*/
public String getWorkDir() {
return (workDir);
}
/**
* Host work directory base.
*/
public void setWorkDir(String workDir) {
this.workDir = workDir;
}
// --------------------------------------------------------- Public Methods
/**
* Install the StandardContext portion of the DefaultContext
* configuration into current Context.
*
* @param context current web application context
*/
public void installDefaultContext(Context context) {
if (defaultContext != null &&
defaultContext instanceof StandardDefaultContext) {
((StandardDefaultContext)defaultContext).installDefaultContext(context);
}
}
/**
* Import the DefaultContext config into a web application context.
*
* @param context web application context to import default context
*/
public void importDefaultContext(Context context) {
if( this.defaultContext != null )
this.defaultContext.importDefaultContext(context);
}
/**
* Add an alias name that should be mapped to this same Host.
*
* @param alias The alias to be added
*/
public void addAlias(String alias) {
alias = alias.toLowerCase();
// Skip duplicate aliases
for (int i = 0; i < aliases.length; i++) {
if (aliases[i].equals(alias))
return;
}
// Add this alias to the list
String newAliases[] = new String[aliases.length + 1];
for (int i = 0; i < aliases.length; i++)
newAliases[i] = aliases[i];
newAliases[aliases.length] = alias;
aliases = newAliases;
// Inform interested listeners
fireContainerEvent(ADD_ALIAS_EVENT, alias);
}
/**
* Add a child Container, only if the proposed child is an implementation
* of Context.
*
* @param child Child container to be added
*/
public void addChild(Container child) {
if (!(child instanceof Context))
throw new IllegalArgumentException
(sm.getString("standardHost.notContext"));
super.addChild(child);
}
/**
* Return the set of alias names for this Host. If none are defined,
* a zero length array is returned.
*/
public String[] findAliases() {
return (this.aliases);
}
/**
* Return descriptive information about this Container implementation and
* the corresponding version number, in the format
* <code><description>/<version></code>.
*/
public String getInfo() {
return (info);
}
/**
* Return the Context that would be used to process the specified
* host-relative request URI, if any; otherwise return <code>null</code>.
*
* @param uri Request URI to be mapped
*/
public Context map(String uri) {
if (log.isDebugEnabled())
log.debug("Mapping request URI '" + uri + "'");
if (uri == null)
return (null);
// Match on the longest possible context path prefix
if (log.isTraceEnabled())
log.trace(" Trying the longest context path prefix");
Context context = null;
String mapuri = uri;
while (true) {
context = (Context) findChild(mapuri);
if (context != null)
break;
int slash = mapuri.lastIndexOf('/');
if (slash < 0)
break;
mapuri = mapuri.substring(0, slash);
}
// If no Context matches, select the default Context
if (context == null) {
if (log.isTraceEnabled())
log.trace(" Trying the default context");
context = (Context) findChild("");
}
// Complain if no Context has been selected
if (context == null) {
log.error(sm.getString("standardHost.mappingError", uri));
return (null);
}
// Return the mapped Context (if any)
if (log.isDebugEnabled())
log.debug(" Mapped to context '" + context.getPath() + "'");
return (context);
}
/**
* Remove the specified alias name from the aliases for this Host.
*
* @param alias Alias name to be removed
*/
public void removeAlias(String alias) {
alias = alias.toLowerCase();
synchronized (aliases) {
// Make sure this alias is currently present
int n = -1;
for (int i = 0; i < aliases.length; i++) {
if (aliases[i].equals(alias)) {
n = i;
break;
}
}
if (n < 0)
return;
// Remove the specified alias
int j = 0;
String results[] = new String[aliases.length - 1];
for (int i = 0; i < aliases.length; i++) {
if (i != n)
results[j++] = aliases[i];
}
aliases = results;
}
// Inform interested listeners
fireContainerEvent(REMOVE_ALIAS_EVENT, alias);
}
/**
* Return a String representation of this component.
*/
public String toString() {
StringBuffer sb = new StringBuffer();
if (getParent() != null) {
sb.append(getParent().toString());
sb.append(".");
}
sb.append("StandardHost[");
sb.append(getName());
sb.append("]");
return (sb.toString());
}
/**
* Start this host.
*
* @exception LifecycleException if this component detects a fatal error
* that prevents it from being started
*/
public synchronized void start() throws LifecycleException {
if( started ) {
return;
}
if( ! initialized )
init();
// Look for a realm - that may have been configured earlier.
// If the realm is added after context - it'll set itself.
if( realm == null ) {
ObjectName realmName=null;
try {
realmName=new ObjectName( domain + ":type=Host,host=" + getName());
if( mserver.isRegistered(realmName ) ) {
mserver.invoke(realmName, "setContext",
new Object[] {this},
new String[] { "org.apache.catalina.Container" }
);
}
} catch( Throwable t ) {
log.debug("No realm for this host " + realmName);
}
}
// Set error report valve
if ((errorReportValveClass != null)
&& (!errorReportValveClass.equals(""))) {
try {
boolean found = false;
if(errorReportValveObjectName != null) {
ObjectName[] names =
((StandardPipeline)pipeline).getValveObjectNames();
for (int i=0; !found && i<names.length; i++)
if(errorReportValveObjectName.equals(names[i]))
found = true ;
}
if(!found) {
Valve valve = (Valve) Class.forName(errorReportValveClass)
.newInstance();
addValve(valve);
errorReportValveObjectName = ((ValveBase)valve).getObjectName() ;
}
} catch (Throwable t) {
log.error(sm.getString
("standardHost.invalidErrorReportValveClass",
errorReportValveClass));
}
}
if (xmlValidation)
log.info( sm.getString("standardHost.validationEnabled"));
else
log.info( sm.getString("standardHost.validationDisabled"));
super.start();
}
/**
* Execute a periodic task, such as reloading, etc. This method will be
* invoked inside the classloading context of this container. Unexpected
* throwables will be caught and logged.
*/
public void backgroundProcess() {
lifecycle.fireLifecycleEvent("check", null);
}
// ------------------------------------------------------- Deployer Methods
/**
* Install a new web application, whose web application archive is at the
* specified URL, into this container with the specified context path.
* A context path of "" (the empty string) should be used for the root
* application for this container. Otherwise, the context path must
* start with a slash.
* <p>
* If this application is successfully installed, a ContainerEvent of type
* <code>INSTALL_EVENT</code> will be sent to all registered listeners,
* with the newly created <code>Context</code> as an argument.
*
* @param contextPath The context path to which this application should
* be installed (must be unique)
* @param war A URL of type "jar:" that points to a WAR file, or type
* "file:" that points to an unpacked directory structure containing
* the web application to be installed
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalStateException if the specified context path
* is already attached to an existing web application
* @exception IOException if an input/output error was encountered
* during install
*/
public void install(String contextPath, URL war) throws IOException {
getDeployer().install(contextPath, war);
}
/**
* <p>Install a new web application, whose context configuration file
* (consisting of a <code><Context></code> element) and web
* application archive are at the specified URLs.</p>
*
* <p>If this application is successfully installed, a ContainerEvent
* of type <code>INSTALL_EVENT</code> will be sent to all registered
* listeners, with the newly created <code>Context</code> as an argument.
* </p>
*
* @param config A URL that points to the context configuration file to
* be used for configuring the new Context
* @param war A URL of type "jar:" that points to a WAR file, or type
* "file:" that points to an unpacked directory structure containing
* the web application to be installed
*
* @exception IllegalArgumentException if one of the specified URLs is
* null
* @exception IllegalStateException if the context path specified in the
* context configuration file is already attached to an existing web
* application
* @exception IOException if an input/output error was encountered
* during installation
*/
public synchronized void install(URL config, URL war) throws IOException {
getDeployer().install(config, war);
}
/**
* Return the Context for the deployed application that is associated
* with the specified context path (if any); otherwise return
* <code>null</code>.
*
* @param contextPath The context path of the requested web application
*/
public Context findDeployedApp(String contextPath) {
return (getDeployer().findDeployedApp(contextPath));
}
/**
* Return the context paths of all deployed web applications in this
* Container. If there are no deployed applications, a zero-length
* array is returned.
*/
public String[] findDeployedApps() {
return (getDeployer().findDeployedApps());
}
/**
* Remove an existing web application, attached to the specified context
* path. If this application is successfully removed, a
* ContainerEvent of type <code>REMOVE_EVENT</code> will be sent to all
* registered listeners, with the removed <code>Context</code> as
* an argument.
*
* @param contextPath The context path of the application to be removed
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* removal
*/
public void remove(String contextPath) throws IOException {
getDeployer().remove(contextPath);
}
/**
* Remove an existing web application, attached to the specified context
* path. If this application is successfully removed, a
* ContainerEvent of type <code>REMOVE_EVENT</code> will be sent to all
* registered listeners, with the removed <code>Context</code> as
* an argument. Deletes the web application war file and/or directory
* if they exist in the Host's appBase.
*
* @param contextPath The context path of the application to be removed
* @param undeploy boolean flag to remove web application from server
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* removal
*/
public void remove(String contextPath, boolean undeploy) throws IOException {
getDeployer().remove(contextPath,undeploy);
}
/**
* Start an existing web application, attached to the specified context
* path. Only starts a web application if it is not running.
*
* @param contextPath The context path of the application to be started
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs during
* startup
*/
public void start(String contextPath) throws IOException {
getDeployer().start(contextPath);
}
/**
* Stop an existing web application, attached to the specified context
* path. Only stops a web application if it is running.
*
* @param contextPath The context path of the application to be stopped
*
* @exception IllegalArgumentException if the specified context path
* is malformed (it must be "" or start with a slash)
* @exception IllegalArgumentException if the specified context path does
* not identify a currently installed web application
* @exception IOException if an input/output error occurs while stopping
* the web application
*/
public void stop(String contextPath) throws IOException {
getDeployer().stop(contextPath);
}
// ------------------------------------------------------ Protected Methods
static String STANDARD_HOST_DEPLOYER="org.apache.catalina.core.StandardHostDeployer";
public Deployer getDeployer() {
if( deployer!= null )
return deployer;
log.info( "Create Host deployer for direct deployment ( non-jmx ) ");
try {
Class c=Class.forName( STANDARD_HOST_DEPLOYER );
deployer=(Deployer)c.newInstance();
Method m=c.getMethod("setHost", new Class[] {Host.class} );
m.invoke( deployer, new Object[] { this } );
} catch( Throwable t ) {
log.error( "Error creating deployer ", t);
}
return deployer;
}
public void setDeployer(Deployer d) {
this.deployer=d;
}
// -------------------- JMX --------------------
/**
* Return the MBean Names of the Valves assoicated with this Host
*
* @exception Exception if an MBean cannot be created or registered
*/
public String [] getValveNames()
throws Exception
{
Valve [] valves = this.getValves();
String [] mbeanNames = new String[valves.length];
for (int i = 0; i < valves.length; i++) {
if( valves[i] == null ) continue;
if( ((ValveBase)valves[i]).getObjectName() == null ) continue;
mbeanNames[i] = ((ValveBase)valves[i]).getObjectName().toString();
}
return mbeanNames;
}
public String[] getAliases() {
return aliases;
}
private boolean initialized=false;
public void init() {
if( initialized ) return;
initialized=true;
// already registered.
if( getParent() == null ) {
try {
// Register with the Engine
ObjectName serviceName=new ObjectName(domain +
":type=Engine");
if( mserver.isRegistered( serviceName )) {
log.debug("Registering with the Engine");
mserver.invoke( serviceName, "addChild",
new Object[] { this },
new String[] { "org.apache.catalina.Container" } );
}
} catch( Exception ex ) {
ex.printStackTrace();
}
}
if( oname==null ) {
// not registered in JMX yet - standalone mode
try {
StandardEngine engine=(StandardEngine)parent;
domain=engine.getName();
log.debug( "Register " + domain );
oname=new ObjectName(domain + ":type=Host,host=" +
this.getName());
Registry.getRegistry(null, null)
.registerComponent(this, oname, null);
} catch( Throwable t ) {
log.info("Error registering ", t );
}
}
}
public ObjectName preRegister(MBeanServer server, ObjectName oname )
throws Exception
{
ObjectName res=super.preRegister(server, oname);
String name=oname.getKeyProperty("host");
if( name != null )
setName( name );
return res;
}
public ObjectName createObjectName(String domain, ObjectName parent)
throws Exception
{
if( log.isDebugEnabled())
log.debug("Create ObjectName " + domain + " " + parent );
return new ObjectName( domain + ":type=Host,host=" + getName());
}
}