sunlabs.brazil.handler
Class CookieSessionHandler

java.lang.Object
  sunlabs.brazil.handler.CookieSessionHandler (view source)

All Implemented Interfaces:

Handler

public class CookieSessionHandler
extends Object
implements Handler

Handler for creating browser sessions using cookies. This handler provides a single cookie-id that may be used by other handlers. The intent is to require only one cookie per server. (See also SessionFilter, which manages sessions with or without cookies). The following server properties are used:

prefix, suffix, glob, match

Specify the URL that triggers this handler (See MatchString).

If prefix is specified, it is also used to instruct the client to limit the scope of the browser cookie. to that prefix.

cookie

the name of the cookie to use (defaults to "cookie").

map

If specified, the ident argument to SessionManager.getSession(java.lang.Object, java.lang.Object, java.lang.Class) to get the table of valid cookies, used to map the cookie value to a Session ID. By default, the Session ID stored in the request is the cookie value itself.

exist

If specified, this means that the Session ID corresponding to the cookie value must already exist in the SessionManager. Normally, if the cookie was not present, a new cookie is automatically created.

persist

If set, cookies persist across browser sessions

session

The name of the request property that the Session ID will be stored in, to be passed to downstream handler. The default value is "SessionID". If the property already exists, and is not empty, no action will be taken.

If a cookie was returned from the browser, the property: gotCookie is set to the cookie name. Otherwise it is left unset.

Field Summary

String	cookieName
String	ident
boolean	mustExist
boolean	persist
String	session

Constructor Summary

CookieSessionHandler()

Method Summary

boolean	init(Server server, String propsPrefix) Initializes the handler.
boolean	respond(Request request) Responds to an HTTP request.

Methods inherited from class java.lang.Object

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

Field Detail

cookieName

public String cookieName

ident

public String ident

mustExist

public boolean mustExist

persist

public boolean persist

session

public String session

Constructor Detail

CookieSessionHandler

public CookieSessionHandler()

Method Detail

init

public boolean init(Server server,
                    String propsPrefix)

Description copied from interface: Handler

Initializes the handler.

Specified by:

init in interface Handler

Parameters:

server - The HTTP server that created this Handler. Typical Handlers will use Server.props to obtain run-time configuration information.

propsPrefix - The handlers name. The string this Handler may prepend to all of the keys that it uses to extract configuration information from Server.props. This is set (by the Server and ChainHandler) to help avoid configuration parameter namespace collisions.

Returns:

true if this Handler initialized successfully, false otherwise. If false is returned, this Handler should not be used.

respond

public boolean respond(Request request)
                throws IOException

Description copied from interface: Handler

Responds to an HTTP request.

Specified by:

respond in interface Handler

Parameters:

request - The Request object that represents the HTTP request.

Returns:

true if the request was handled. A request was handled if a response was supplied to the client, typically by calling Request.sendResponse() or Request.sendError.

Throws:

IOException - if there was an I/O error while sending the response to the client. Typically, in that case, the Server will (try to) send an error message to the client and then close the client's connection.

The IOException should not be used to silently ignore problems such as being unable to access some server-side resource (for example getting a FileNotFoundException due to not being able to open a file). In that case, the Handler's duty is to turn that IOException into a HTTP response indicating, in this case, that a file could not be found.