Package org.apache.catalina.core

Class StandardHost

java.lang.Object

org.apache.catalina.util.LifecycleBase

org.apache.catalina.util.LifecycleMBeanBase

org.apache.catalina.core.ContainerBase

org.apache.catalina.core.StandardHost

All Implemented Interfaces:

MBeanRegistration, Container, Host, JmxEnabled, Lifecycle

public class StandardHost
extends ContainerBase
implements Host

Standard implementation of the Host interface. Each child container must be a Context implementation to process the requests directed to a particular web application.

Author:

Craig R. McClanahan, Remy Maucherat

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.catalina.core.ContainerBase

ContainerBase.ContainerBackgroundProcessor, ContainerBase.ContainerBackgroundProcessorMonitor

Nested classes/interfaces inherited from interface org.apache.catalina.Lifecycle

Lifecycle.SingleUse

Field Summary

Fields inherited from class org.apache.catalina.core.ContainerBase

accessLog, backgroundProcessorDelay, backgroundProcessorFuture, children, cluster, listeners, logger, logName, monitorFuture, name, parent, parentClassLoader, pipeline, sm, startChildren, startStopExecutor, support

Fields inherited from interface org.apache.catalina.Container

ADD_CHILD_EVENT, ADD_VALVE_EVENT, REMOVE_CHILD_EVENT, REMOVE_VALVE_EVENT

Fields inherited from interface org.apache.catalina.Host

ADD_ALIAS_EVENT, REMOVE_ALIAS_EVENT

Fields inherited from interface org.apache.catalina.Lifecycle

AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

Constructors

Constructor	Description
StandardHost()	Create a new StandardHost component with the default basic Valve.

Method Summary

Modifier and Type	Method	Description
void	addAlias(String alias)	Add an alias name that should be mapped to this same Host.
void	addChild(Container child)	Add a new child Container to those associated with this Container, if supported.
String[]	findAliases()
String[]	findReloadedContextMemoryLeaks()	Attempt to identify the contexts that have a class loader memory leak.
String[]	getAliases()
String	getAppBase()
File	getAppBaseFile()
boolean	getAutoDeploy()
File	getConfigBaseFile()
String	getConfigClass()
String	getContextClass()
boolean	getCreateDirs()	Returns true if the Host will attempt to create directories for appBase and xmlBase unless they already exist.
String	getDeployIgnore()
Pattern	getDeployIgnorePattern()
boolean	getDeployOnStartup()
String	getErrorReportValveClass()
String	getLegacyAppBase()
File	getLegacyAppBaseFile()
String	getName()	Return a name string (suitable for use by humans) that describes this Container.
protected String	getObjectNameKeyProperties()	Allow sub-classes to specify the key properties component of the ObjectName that will be used to register this component.
ExecutorService	getStartStopExecutor()
boolean	getUndeployOldVersions()
String[]	getValveNames()
String	getWorkDir()
String	getXmlBase()
boolean	isCopyXML()
boolean	isDeployXML()
boolean	isFailCtxIfServletStartFails()
boolean	isUnpackWARs()
void	removeAlias(String alias)	Remove the specified alias name from the aliases for this Host.
void	setAppBase(String appBase)	Set the application root for this Host.
void	setAutoDeploy(boolean autoDeploy)	Set the auto deploy flag value for this host.
void	setConfigClass(String configClass)	Set the Java class name of the context configuration class for new web applications.
void	setContextClass(String contextClass)	Set the Java class name of the Context implementation class for new web applications.
void	setCopyXML(boolean copyXML)	Set the copy XML config file flag for this component.
void	setCreateDirs(boolean createDirs)	Should the Host attempt to create directories for xmlBase and appBase upon startup.
void	setDeployIgnore(String deployIgnore)	Set the regular expression that defines the files and directories in the host's appBase that will be ignored by the automatic deployment process.
void	setDeployOnStartup(boolean deployOnStartup)	Set the deploy on startup flag value for this host.
void	setDeployXML(boolean deployXML)	Deploy XML Context config files flag mutator.
void	setErrorReportValveClass(String errorReportValveClass)	Set the Java class name of the error report valve class for new web applications.
void	setFailCtxIfServletStartFails(boolean failCtxIfServletStartFails)	Change the behavior of Servlet startup errors on web application starts.
void	setLegacyAppBase(String legacyAppBase)	Set the legacy (Java EE) application root for this Host.
void	setName(String name)	Set a name string (suitable for use by humans) that describes this Container.
void	setUndeployOldVersions(boolean undeployOldVersions)	Set to true if the Host should automatically undeploy old versions of applications deployed using parallel deployment.
void	setUnpackWARs(boolean unpackWARs)	Unpack WARs flag mutator.
void	setWorkDir(String workDir)	Set host work directory base.
void	setXmlBase(String xmlBase)	Set the Xml root for this Host.
protected void	startInternal()	Start this component and implement the requirements of LifecycleBase.startInternal().

Methods inherited from class org.apache.catalina.core.ContainerBase

addContainerListener, addPropertyChangeListener, addValve, backgroundProcess, destroyInternal, findChild, findChildren, findContainerListeners, fireContainerEvent, getAccessLog, getBackgroundProcessorDelay, getCatalinaBase, getCatalinaHome, getChildren, getCluster, getClusterInternal, getDomainInternal, getLogger, getLogName, getMBeanKeyProperties, getParent, getParentClassLoader, getPipeline, getRealm, getRealmInternal, getStartChildren, getStartStopThreads, logAccess, removeChild, removeContainerListener, removePropertyChangeListener, setBackgroundProcessorDelay, setCluster, setParent, setParentClassLoader, setRealm, setStartChildren, setStartStopThreads, stopInternal, threadStart, threadStop, toString

Methods inherited from class org.apache.catalina.util.LifecycleMBeanBase

getDomain, getObjectName, initInternal, postDeregister, postRegister, preDeregister, preRegister, register, setDomain, unregister, unregister

Methods inherited from class org.apache.catalina.util.LifecycleBase

addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, getThrowOnFailure, init, removeLifecycleListener, setState, setState, setThrowOnFailure, start, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.catalina.Container

addContainerListener, addPropertyChangeListener, backgroundProcess, findChild, findChildren, findContainerListeners, fireContainerEvent, getAccessLog, getBackgroundProcessorDelay, getCatalinaBase, getCatalinaHome, getCluster, getDomain, getLogger, getLogName, getMBeanKeyProperties, getObjectName, getParent, getParentClassLoader, getPipeline, getRealm, getStartStopThreads, logAccess, removeChild, removeContainerListener, removePropertyChangeListener, setBackgroundProcessorDelay, setCluster, setParent, setParentClassLoader, setRealm, setStartStopThreads

Methods inherited from interface org.apache.catalina.Lifecycle

addLifecycleListener, destroy, findLifecycleListeners, getState, getStateName, init, removeLifecycleListener, start, stop

Constructor Details

StandardHost

public StandardHost()

Create a new StandardHost component with the default basic Valve.

Method Details

getUndeployOldVersions

public boolean getUndeployOldVersions()

Specified by:

getUndeployOldVersions in interface Host

Returns:

true of the Host is configured to automatically undeploy old versions of applications deployed using parallel deployment. This only takes effect is Host.getAutoDeploy() also returns true.

setUndeployOldVersions

public void setUndeployOldVersions(boolean undeployOldVersions)

Description copied from interface: Host

Set to true if the Host should automatically undeploy old versions of applications deployed using parallel deployment. This only takes effect if Host.getAutoDeploy() returns true.

Specified by:

setUndeployOldVersions in interface Host

Parameters:

undeployOldVersions - The new value for this flag

getStartStopExecutor

public ExecutorService getStartStopExecutor()

Specified by:

getStartStopExecutor in interface Host

Returns:

the executor that is used for starting and stopping contexts. This is primarily for use by components deploying contexts that want to do this in a multi-threaded manner.

getAppBase

public String getAppBase()

Specified by:

getAppBase in interface Host

Returns:

the application root for this Host. This can be an absolute pathname, a relative pathname, or a URL.

getAppBaseFile

public File getAppBaseFile()

Specified by:

getAppBaseFile in interface Host

Returns:

an absolute File for the appBase of this Host. The file will be canonical if possible. There is no guarantee that that the appBase exists.

setAppBase

public void setAppBase(String appBase)

Description copied from interface: Host

Set the application root for this Host. This can be an absolute pathname, a relative pathname, or a URL.

Specified by:

setAppBase in interface Host

Parameters:

appBase - The new application root

getLegacyAppBase

public String getLegacyAppBase()

Specified by:

getLegacyAppBase in interface Host

Returns:

the legacy (Java EE) application root for this Host. This can be an absolute pathname, a relative pathname, or a URL.

getLegacyAppBaseFile

public File getLegacyAppBaseFile()

Specified by:

getLegacyAppBaseFile in interface Host

Returns:

an absolute File for the legacy (Java EE) appBase of this Host. The file will be canonical if possible. There is no guarantee that that the appBase exists.

setLegacyAppBase

public void setLegacyAppBase(String legacyAppBase)

Description copied from interface: Host

Set the legacy (Java EE) application root for this Host. This can be an absolute pathname, a relative pathname, or a URL.

Specified by:

setLegacyAppBase in interface Host

Parameters:

legacyAppBase - The new legacy application root

getXmlBase

public String getXmlBase()

Specified by:

getXmlBase in interface Host

Returns:

the XML root for this Host. This can be an absolute pathname or a relative pathname. If null, the base path defaults to ${catalina.base}/conf/<engine name>/<host name> directory

setXmlBase

public void setXmlBase(String xmlBase)

Description copied from interface: Host

Set the Xml root for this Host. This can be an absolute pathname or a relative pathname. If null, the base path defaults to ${catalina.base}/conf/<engine name>/<host name> directory

Specified by:

setXmlBase in interface Host

Parameters:

xmlBase - The new XML root

getConfigBaseFile

public File getConfigBaseFile()

Specified by:

getConfigBaseFile in interface Host

Returns:

a default configuration path of this Host. The file will be canonical if possible.

getCreateDirs

public boolean getCreateDirs()

Returns true if the Host will attempt to create directories for appBase and xmlBase unless they already exist.

The default value for this implementation is true.

Specified by:

getCreateDirs in interface Host

Returns:

true if the Host will attempt to create directories

setCreateDirs

public void setCreateDirs(boolean createDirs)

Description copied from interface: Host

Should the Host attempt to create directories for xmlBase and appBase upon startup.

Specified by:

setCreateDirs in interface Host

Parameters:

createDirs - The new value for this flag

getAutoDeploy

public boolean getAutoDeploy()

The default value for this implementation is true.

Specified by:

getAutoDeploy in interface Host

Returns:

the value of the auto deploy flag. If true, it indicates that this host's child webapps should be discovered and automatically deployed dynamically.

setAutoDeploy

public void setAutoDeploy(boolean autoDeploy)

Description copied from interface: Host

Set the auto deploy flag value for this host.

Specified by:

setAutoDeploy in interface Host

Parameters:

autoDeploy - The new auto deploy flag

getConfigClass

public String getConfigClass()

Specified by:

getConfigClass in interface Host

Returns:

the Java class name of the context configuration class for new web applications.

setConfigClass

public void setConfigClass(String configClass)

Description copied from interface: Host

Set the Java class name of the context configuration class for new web applications.

Specified by:

setConfigClass in interface Host

Parameters:

configClass - The new context configuration class

getContextClass

public String getContextClass()

Returns:

the Java class name of the Context implementation class for new web applications.

setContextClass

public void setContextClass(String contextClass)

Set the Java class name of the Context implementation class for new web applications.

Parameters:

contextClass - The new context implementation class

getDeployOnStartup

public boolean getDeployOnStartup()

The default value for this implementation is true.

Specified by:

getDeployOnStartup in interface Host

Returns:

the value of the deploy on startup flag. If true, it indicates that this host's child webapps should be discovered and automatically deployed.

setDeployOnStartup

public void setDeployOnStartup(boolean deployOnStartup)

Description copied from interface: Host

Set the deploy on startup flag value for this host.

Specified by:

setDeployOnStartup in interface Host

Parameters:

deployOnStartup - The new deploy on startup flag

isDeployXML

public boolean isDeployXML()

Returns:

true if XML context descriptors should be deployed.

setDeployXML

public void setDeployXML(boolean deployXML)

Deploy XML Context config files flag mutator.

Parameters:

deployXML - true if context descriptors should be deployed

isCopyXML

public boolean isCopyXML()

Returns:

the copy XML config file flag for this component.

setCopyXML

public void setCopyXML(boolean copyXML)

Set the copy XML config file flag for this component.

Parameters:

copyXML - The new copy XML flag

getErrorReportValveClass

public String getErrorReportValveClass()

Returns:

the Java class name of the error report valve class for new web applications.

setErrorReportValveClass

public void setErrorReportValveClass(String errorReportValveClass)

Set the Java class name of the error report valve class for new web applications.

Parameters:

errorReportValveClass - The new error report valve class

getName

public String getName()

Description copied from interface: Container

Return a name string (suitable for use by humans) that describes this Container. Within the set of child containers belonging to a particular parent, Container names must be unique.

Specified by:

getName in interface Container

Overrides:

getName in class ContainerBase

Returns:

The human readable name of this container.

setName

public void setName(String name)

Description copied from interface: Container

Set a name string (suitable for use by humans) that describes this Container. Within the set of child containers belonging to a particular parent, Container names must be unique.

Specified by:

setName in interface Container

Overrides:

setName in class ContainerBase

Parameters:

name - New name of this container

isUnpackWARs

public boolean isUnpackWARs()

Returns:

true if WARs should be unpacked on deployment.

setUnpackWARs

public void setUnpackWARs(boolean unpackWARs)

Unpack WARs flag mutator.

Parameters:

unpackWARs - true to unpack WARs on deployment

getWorkDir

public String getWorkDir()

Returns:

host work directory base.

setWorkDir

public void setWorkDir(String workDir)

Set host work directory base.

Parameters:

workDir - the new base work folder for this host

getDeployIgnore

public String getDeployIgnore()

Specified by:

getDeployIgnore in interface Host

Returns:

the regular expression that defines the files and directories in the host's appBase that will be ignored by the automatic deployment process.

getDeployIgnorePattern

public Pattern getDeployIgnorePattern()

Specified by:

getDeployIgnorePattern in interface Host

Returns:

the compiled regular expression that defines the files and directories in the host's appBase that will be ignored by the automatic deployment process.

setDeployIgnore

public void setDeployIgnore(String deployIgnore)

Description copied from interface: Host

Set the regular expression that defines the files and directories in the host's appBase that will be ignored by the automatic deployment process.

Specified by:

setDeployIgnore in interface Host

Parameters:

deployIgnore - A regular expression matching file names

isFailCtxIfServletStartFails

public boolean isFailCtxIfServletStartFails()

Returns:

true if a webapp start should fail if a Servlet startup fails

setFailCtxIfServletStartFails

public void setFailCtxIfServletStartFails(boolean failCtxIfServletStartFails)

Change the behavior of Servlet startup errors on web application starts.

Parameters:

failCtxIfServletStartFails - false to ignore errors on Servlets which are stated when the web application starts

addAlias

public void addAlias(String alias)

Description copied from interface: Host

Add an alias name that should be mapped to this same Host.

Specified by:

addAlias in interface Host

Parameters:

alias - The alias to be added

addChild

public void addChild(Container child)

Add a new child Container to those associated with this Container, if supported. Prior to adding this Container to the set of children, the child's setParent() method must be called, with this Container as an argument. This method may thrown an IllegalArgumentException if this Container chooses not to be attached to the specified Container, in which case it is not added

The child must be an implementation of Context.

Specified by:

addChild in interface Container

Overrides:

addChild in class ContainerBase

Parameters:

child - New child Container to be added

findReloadedContextMemoryLeaks

public String[] findReloadedContextMemoryLeaks()

Attempt to identify the contexts that have a class loader memory leak. This is usually triggered on context reload. Note: This method attempts to force a full garbage collection. This should be used with extreme caution on a production system.

Returns:

a list of possibly leaking contexts

findAliases

public String[] findAliases()

Specified by:

findAliases in interface Host

Returns:

the set of alias names for this Host. If none are defined, a zero length array is returned.

removeAlias

public void removeAlias(String alias)

Description copied from interface: Host

Remove the specified alias name from the aliases for this Host.

Specified by:

removeAlias in interface Host

Parameters:

alias - Alias name to be removed

startInternal

protected void startInternal()
                      throws LifecycleException

Description copied from class: ContainerBase

Start this component and implement the requirements of LifecycleBase.startInternal().

Overrides:

startInternal in class ContainerBase

Throws:

LifecycleException - if this component detects a fatal error that prevents this component from being used

getValveNames

public String[] getValveNames()
                       throws Exception

Returns:

the MBean Names of the Valves associated with this Host

Throws:

Exception - if an MBean cannot be created or registered

getAliases

public String[] getAliases()

getObjectNameKeyProperties

protected String getObjectNameKeyProperties()

Description copied from class: LifecycleMBeanBase

Allow sub-classes to specify the key properties component of the ObjectName that will be used to register this component.

Specified by:

getObjectNameKeyProperties in class LifecycleMBeanBase

Returns:

The string representation of the key properties component of the desired ObjectName