Package org.glassfish.grizzly.osgi.httpservice

Class OSGiMainHandler

java.lang.Object

org.glassfish.grizzly.http.server.HttpHandler

org.glassfish.grizzly.osgi.httpservice.OSGiMainHandler

All Implemented Interfaces:

OSGiHandler

public class OSGiMainHandler
extends org.glassfish.grizzly.http.server.HttpHandler
implements OSGiHandler

OSGi Main HttpHandler.

Dispatching HttpHandler. Grizzly integration.

Responsibilities:

• Manages registration data.
• Dispatching HttpHandler.service(Request, Response) method call to registered HttpHandlers.

Author:

Hubert Iwaniuk

Constructor Summary

Constructors

Constructor	Description
OSGiMainHandler(Logger logger, org.osgi.framework.Bundle bundle)	Constructor.

Method Summary

Modifier and Type	Method	Description
ReentrantReadWriteLock.ReadLock	getProcessingLock()	Processing lock.
ReentrantReadWriteLock.WriteLock	getRemovalLock()	Removal lock.
void	registerFilter(javax.servlet.Filter filter, String urlPattern, Dictionary initparams, org.osgi.service.http.HttpContext context, org.osgi.service.http.HttpService httpService)
void	registerResourceHandler(String alias, org.osgi.service.http.HttpContext context, String internalPrefix, org.osgi.service.http.HttpService httpService)	Registers OSGiResourceHandler in OSGi Http Service.
void	registerServletHandler(String alias, javax.servlet.Servlet servlet, Dictionary initparams, org.osgi.service.http.HttpContext context, org.osgi.service.http.HttpService httpService)	Registers OSGiServletHandler in OSGi Http Service.
void	service(org.glassfish.grizzly.http.server.Request request, org.glassfish.grizzly.http.server.Response response)	Service method dispatching to registered handlers.
void	unregisterAlias(String alias)	Unregisters previously registered alias.
void	unregisterAll()	Part of Shutdown sequence.
void	unregisterFilter(javax.servlet.Filter filter)
void	uregisterAllLocal()	Unregisters all aliases registered by owning bundle.

Methods inherited from class org.glassfish.grizzly.http.server.HttpHandler

destroy, getErrorPageGenerator, getName, getRequestExecutorProvider, getRequestURIEncoding, getSessionCookieName, getSessionManager, isAllowCustomStatusMessage, isAllowEncodedSlash, sendAcknowledgment, setAllowCustomStatusMessage, setAllowEncodedSlash, setDecodeUrl, setDispatcherHelper, setRequestURIEncoding, setRequestURIEncoding, start, updatePaths

Methods inherited from class java.lang.Object

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

Constructor Details

OSGiMainHandler

public OSGiMainHandler(Logger logger,
 org.osgi.framework.Bundle bundle)

Constructor.

Parameters:

logger - Logger utility.

bundle - Bundle that we create if for, for local data reference.

Method Details

service

public void service(org.glassfish.grizzly.http.server.Request request,
 org.glassfish.grizzly.http.server.Response response)
             throws Exception

Service method dispatching to registered handlers.

Specified by:

service in class org.glassfish.grizzly.http.server.HttpHandler

Throws:

Exception

registerServletHandler

public void registerServletHandler(String alias,
 javax.servlet.Servlet servlet,
 Dictionary initparams,
 org.osgi.service.http.HttpContext context,
 org.osgi.service.http.HttpService httpService)
                            throws org.osgi.service.http.NamespaceException,
javax.servlet.ServletException

Registers OSGiServletHandler in OSGi Http Service.

Keeps truck of all registrations, takes care of thread safety.

Parameters:

alias - Alias to register, if wrong value than throws NamespaceException.

servlet - Servlet to register under alias, if fails to Servlet.init(javax.servlet.ServletConfig) throws ServletException.

initparams - Initial parameters to populate ServletContext with.

context - OSGi HttpContext, provides mime handling, security and bundle specific resource access.

httpService - Used to HttpService.createDefaultHttpContext() if needed.

Throws:

org.osgi.service.http.NamespaceException - If alias was invalid or already registered.

javax.servlet.ServletException - If Servlet.init(javax.servlet.ServletConfig) fails.

registerFilter

public void registerFilter(javax.servlet.Filter filter,
 String urlPattern,
 Dictionary initparams,
 org.osgi.service.http.HttpContext context,
 org.osgi.service.http.HttpService httpService)
                    throws javax.servlet.ServletException

Parameters:

filter -

urlPattern -

initparams -

context -

httpService -

Throws:

org.osgi.service.http.NamespaceException

javax.servlet.ServletException

registerResourceHandler

public void registerResourceHandler(String alias,
 org.osgi.service.http.HttpContext context,
 String internalPrefix,
 org.osgi.service.http.HttpService httpService)
                             throws org.osgi.service.http.NamespaceException

Registers OSGiResourceHandler in OSGi Http Service.

Keeps truck of all registrations, takes care of thread safety.

Parameters:

alias - Alias to register, if wrong value than throws NamespaceException.

context - OSGi HttpContext, provides mime handling, security and bundle specific resource access.

internalPrefix - Prefix to map request for this alias to.

httpService - Used to HttpService.createDefaultHttpContext() if needed.

Throws:

org.osgi.service.http.NamespaceException - If alias was invalid or already registered.

unregisterAlias

public void unregisterAlias(String alias)

Unregisters previously registered alias.

Keeps truck of all registrations, takes care of thread safety.

Parameters:

alias - Alias to unregister, if not owning alias IllegalArgumentException is thrown.

Throws:

IllegalArgumentException - If alias was not registered by calling bundle.

unregisterFilter

public void unregisterFilter(javax.servlet.Filter filter)

uregisterAllLocal

public void uregisterAllLocal()

Unregisters all aliases registered by owning bundle.

unregisterAll

public void unregisterAll()

Part of Shutdown sequence. Unregister and clean up.

getProcessingLock

public ReentrantReadWriteLock.ReadLock getProcessingLock()

Processing lock.

ReentrantReadWriteLock.ReadLock can be obtained by concurrent threads at the same time.

Specified by:

getProcessingLock in interface OSGiHandler

Returns:

Processing lock.

getRemovalLock

public ReentrantReadWriteLock.WriteLock getRemovalLock()

Removal lock.

ReentrantReadWriteLock.WriteLock can be obtained only by one thread, blocks OSGiHandler.getProcessingLock().

Specified by:

getRemovalLock in interface OSGiHandler

Returns:

Removal lock.

See Also:

• OSGiHandler.getProcessingLock()
• ReentrantReadWriteLock.WriteLock