"""The Application singleton.
`Application` and `AppServer` work together to setup up and dispatch requests.
The distinction between the two is largely historical, but AppServer
communicates directly with Adapters (or speaks protocols like HTTP), and
Application receives the (slightly) processed input from AppServer and turns
it into `Transaction`, `HTTPRequest`, `HTTPResponse`, and `Session`.
Application is a singleton, which belongs to the AppServer. You can get access
through the Transaction object (`transaction.application()`), or you can do::
from AppServer import globalAppServer
application = globalAppServer.application()
Settings for Application are taken from ``Configs/Application.config``,
which is used for many global settings, even if they aren't closely tied
to the Application object itself.
"""
from types import FloatType, ClassType
from UserDict import UserDict
from Common import *
from Object import Object
from ConfigurableForServerSidePath import ConfigurableForServerSidePath
from ExceptionHandler import ExceptionHandler
from HTTPRequest import HTTPRequest
from HTTPExceptions import HTTPException, HTTPSessionExpired
from Transaction import Transaction
from ASStreamOut import ConnectionAbortedError
import URLParser
debug = False
defaultConfig = {
'PrintConfigAtStartUp': True,
'LogActivity': True,
'ActivityLogFilename': 'Logs/Activity.csv',
'ActivityLogColumns': [
'request.remoteAddress', 'request.method',
'request.uri', 'response.size',
'servlet.name', 'request.timeStamp',
'transaction.duration',
'transaction.errorOccurred'
],
'SessionModule': 'Session',
'SessionStore': 'Dynamic',
'SessionStoreDir': 'Sessions',
'SessionTimeout': 60,
'SessionPrefix': '',
'SessionName': '_SID_',
'IgnoreInvalidSession': True,
'UseAutomaticPathSessions': False,
'UseCookieSessions': True,
'SessionCookiePath': None,
'SecureSessionCookie': True,
'ShowDebugInfoOnErrors': True,
'EnterDebuggerOnException': False,
'IncludeEditLink': True,
'IncludeFancyTraceback': False,
'FancyTracebackContext': 5,
'UserErrorMessage': 'The site is having technical difficulties'
' with this page. An error has been logged, and the problem'
' will be fixed as soon as possible. Sorry!',
'LogErrors': True,
'ErrorLogFilename': 'Logs/Errors.csv',
'SaveErrorMessages': True,
'ErrorMessagesDir': 'ErrorMsgs',
'EmailErrors': False,
'EmailErrorReportAsAttachment': False,
'ErrorEmailServer': 'localhost',
'ErrorEmailHeaders': {
'From': 'webware@mydomain',
'To': ['webware@mydomain'],
'Reply-to': 'webware@mydomain',
'content-type': 'text/html',
'Subject': 'Error'
},
'ErrorPage': None,
'MaxValueLengthInExceptionReport': 500,
'RPCExceptionReturn': 'traceback',
'ReportRPCExceptionsInWebKit': True,
'CacheDir': 'Cache',
'Contexts': {
'default': 'Examples',
'Admin': 'Admin',
'Examples': 'Examples',
'Testing': 'Testing',
'Docs': 'Docs',
},
'Debug': {
'Sessions': False,
},
'DirectoryFile': ['index', 'Index', 'main', 'Main'],
'UseCascadingExtensions': True,
'ExtensionCascadeOrder': ['.py', '.psp', '.kid', '.html'],
'ExtraPathInfo': True,
'ExtensionsToIgnore': [
'.pyc', '.pyo', '.tmpl', '.bak', '.py_bak',
'.py~', '.psp~', '.kid~', '.html~', '.tmpl~'
],
'ExtensionsToServe': [],
'FilesToHide': [
'.*', '*~', '*.bak', '*.py_bak', '*.tmpl',
'*.pyc', '*.pyo', '__init__.*', '*.config'
],
'FilesToServe': [],
'UnknownFileTypes': {
'ReuseServlets': True,
'Technique': 'serveContent',
'CacheContent': False,
'MaxCacheContentSize': 128*1024,
'ReadBufferSize': 32*1024
},
}
class EndResponse(Exception):
"""End response exception.
Used to prematurely break out of the awake()/respond()/sleep()
cycle without reporting a traceback. During servlet processing,
if this exception is caught during awake() or respond() then sleep()
is called and the response is sent. If caught during sleep(),
processing ends and the response is sent.
"""
pass
class Application(ConfigurableForServerSidePath, Object):
"""The Application singleton.
Purpose and usage are explained in the module docstring.
"""
def __init__(self, server, useSessionSweeper=1):
"""Called only by `AppServer`, sets up the Application."""
self._server = server
self._serverSidePath = server.serverSidePath()
self._imp = server._imp
ConfigurableForServerSidePath.__init__(self)
Object.__init__(self)
print 'Initializing Application...'
print 'Current directory:', os.getcwd()
if self.setting('PrintConfigAtStartUp'):
self.printConfig()
self.initVersions()
self.initErrorPage()
self._shutDownHandlers = []
if self._server.isPersistent():
from TaskKit.Scheduler import Scheduler
self._taskManager = Scheduler(1, exceptionHandler=self.handleException)
self._taskManager.start()
else:
self._taskManager = None
self._exceptionHandlerClass = ExceptionHandler
self.initSessions()
self.makeDirs()
URLParser.initApp(self)
self._rootURLParser = URLParser.ContextParser(self)
self._running = 1
if useSessionSweeper:
self.startSessionSweeper()
def initErrorPage(self):
"""Initialize the error page related attributes."""
dirs = (self._serverSidePath,
os.path.dirname(os.path.abspath(__file__)))
pages = ('error404.html', '404Text.txt')
for dir in dirs:
for page in pages:
try:
self._error404 = open(os.path.join(dir, page)).read()
if page != pages[0]:
print 'Deprecation warning: ' \
'Please use %s instead of %s' % pages
except Exception:
continue
else:
break
else:
continue
break
else:
self._error404 = None
urls = self.setting('ErrorPage') or None
if urls:
try:
errors = urls.keys()
except AttributeError:
errors = ['Exception']
urls = {errors[0]: urls}
for err in errors:
if urls[err] and not urls[err].startswith('/'):
urls[err] = '/' + urls[err]
self._errorPage = urls
def initSessions(self):
"""Initialize all session related attributes."""
self._sessionPrefix = self.setting('SessionPrefix') or ''
if self._sessionPrefix:
if self._sessionPrefix == 'hostname':
from MiscUtils.Funcs import hostName
self._sessionPrefix = hostName()
self._sessionPrefix += '-'
self._sessionTimeout = self.setting('SessionTimeout')*60
self._sessionName = self.setting('SessionName') \
or self.defaultConfig()['SessionName']
self._autoPathSessions = self.setting('UseAutomaticPathSessions')
moduleName = self.setting('SessionModule')
className = moduleName.split('.')[-1]
try:
exec 'from %s import %s' % (moduleName, className)
klass = locals()[className]
if not isinstance(klass, ClassType) \
and not issubclass(klass, Object):
raise ImportError
self._sessionClass = klass
except ImportError:
print "ERROR: Could not import Session class '%s'" \
" from module '%s'" % (className, moduleName)
self._sessionClass = None
moduleName = self.setting('SessionStore')
if moduleName in ('Dynamic', 'File', 'Memory'):
moduleName = 'Session%sStore' % moduleName
self._sessionDir = self.serverSidePath(
self.setting('SessionStoreDir') or 'Sessions')
className = moduleName.split('.')[-1]
try:
exec 'from %s import %s' % (moduleName, className)
klass = locals()[className]
if not isinstance(klass, ClassType) \
and not issubclass(klass, Object):
raise ImportError
self._sessions = klass(self)
except ImportError:
print "ERROR: Could not import SessionStore class '%s'" \
" from module '%s'" % (className, moduleName)
self._sessions = None
def makeDirs(self):
"""Make sure some standard directories are always available."""
self._cacheDir = self.serverSidePath(
self.setting('CacheDir') or 'Cache')
self._errorMessagesDir = self.serverSidePath(
self.setting('ErrorMessagesDir') or 'ErrorMsgs')
for dir in (self.serverSidePath('Logs'),
self._cacheDir, self._errorMessagesDir, self._sessionDir):
if dir and not os.path.exists(dir):
os.makedirs(dir)
def initVersions(self):
"""Get and store versions.
Initialize attributes that store the Webware and WebKit versions as
both tuples and strings. These are stored in the Properties.py files.
"""
from MiscUtils.PropertiesObject import PropertiesObject
props = PropertiesObject(os.path.join(self.webwarePath(),
'Properties.py'))
self._webwareVersion = props['version']
self._webwareVersionString = props['versionString']
props = PropertiesObject(os.path.join(self.webKitPath(),
'Properties.py'))
self._webKitVersion = props['version']
self._webKitVersionString = props['versionString']
def taskManager(self):
"""Accessor: `TaskKit.Scheduler` instance."""
return self._taskManager
def startSessionSweeper(self):
"""Start session sweeper.
Starts the session sweeper, `WebKit.Tasks.SessionTask`, which deletes
session objects (and disk copies of those objects) that have expired.
"""
if self._sessionTimeout:
tm = self.taskManager()
if tm:
from Tasks import SessionTask
import time
task = SessionTask.SessionTask(self._sessions)
sweepinterval = self._sessionTimeout/10
tm.addPeriodicAction(time.time() + sweepinterval,
sweepinterval, task, "SessionSweeper")
print "Session sweeper has started."
def shutDown(self):
"""Shut down the application.
Called by AppServer when it is shuting down. The `__del__` function
of Application probably won't be called due to circular references.
"""
print "Application is shutting down..."
self._running = 0
self._sessions.storeAllSessions()
if self._server.isPersistent():
self.taskManager().stop()
del self._sessions
del self._server
for shutDownHandler in self._shutDownHandlers:
shutDownHandler()
del self._shutDownHandlers
print "Application has been succesfully shutdown."
def addShutDownHandler(self, func):
"""Add a shutdown handler.
Functions added through `addShutDownHandler` will be called when
the AppServer is shutting down. You can use this hook to close
database connections, clean up resources, save data to disk, etc.
"""
self._shutDownHandlers.append(func)
def defaultConfig(self):
"""The default Application.config."""
return defaultConfig
def configFilename(self):
return self.serverSidePath('Configs/Application.config')
def configReplacementValues(self):
return self._server.configReplacementValues()
def webwareVersion(self):
"""Return the Webware version as a tuple."""
return self._webwareVersion
def webwareVersionString(self):
"""Return the Webware version as a printable string."""
return self._webwareVersionString
def webKitVersion(self):
""" Return the WebKit version as a tuple."""
return self._webKitVersion
def webKitVersionString(self):
"""Return the WebKit version as a printable string."""
return self._webKitVersionString
def session(self, sessionId, default=NoDefault):
"""The session object for `sessionId`.
Raises `KeyError` if session not found and no default is given.
"""
if default is NoDefault:
return self._sessions[sessionId]
else:
return self._sessions.get(sessionId, default)
def hasSession(self, sessionId):
"""Check whether session `sessionId` exists."""
return self._sessions.has_key(sessionId)
def sessions(self):
"""A dictionary of all the session objects."""
return self._sessions
def createSessionForTransaction(self, trans):
"""Get the session object for the transaction.
If the session already exists, returns that, otherwise creates
a new session.
Finding the session ID is done in `Transaction.sessionId`.
"""
debug = self.setting('Debug').get('Sessions')
if debug:
prefix = '>> [session] createSessionForTransaction:'
sessId = trans.request().sessionId()
if debug:
print prefix, 'sessId =', sessId
if sessId:
try:
session = self.session(sessId)
if debug:
print prefix, 'retrieved session =', session
except KeyError:
trans.request().setSessionExpired(1)
if not self.setting('IgnoreInvalidSession'):
raise HTTPSessionExpired
sessId = None
if not sessId:
session = self._sessionClass(trans)
self._sessions[session.identifier()] = session
if debug:
print prefix, 'created session =', session
trans.setSession(session)
return session
def createSessionWithID(self, trans, sessionID):
"""Create a session object with our session ID."""
sess = self._sessionClass(trans, sessionID)
trans.application()._sessions.setdefault(sessionID, sess)
def sessionTimeout(self, trans):
"""Get the timeout (in seconds) for a user session.
Overwrite to make this transaction dependent.
"""
return self._sessionTimeout
def sessionPrefix(self, trans):
"""Get the prefix string for the session ID.
Overwrite to make this transaction dependent.
"""
return self._sessionPrefix
def sessionName(self, trans):
"""Get the name of the field holding the session ID.
Overwrite to make this transaction dependent.
"""
return self._sessionName
def sessionCookiePath(self, trans):
"""Get the cookie path for this transaction.
If not path is specified in the configuration setting,
the servlet path is used for security reasons, see:
http://www.net-security.org/dl/articles/cookie_path.pdf
"""
return self.setting('SessionCookiePath') or (
trans.request().servletPath() + '/')
def server(self):
"""Acessor: the AppServer"""
return self._server
def serverSidePath(self, path=None):
"""Get the server-side path.
Returns the absolute server-side path of the WebKit application.
If the optional path is passed in, then it is joined with the
server side directory to form a path relative to the app server.
"""
if path:
return os.path.normpath(
os.path.join(self._serverSidePath, path))
else:
return self._serverSidePath
def webwarePath(self):
"""The path of the ``Webware/`` directory."""
return self._server.webwarePath()
def webKitPath(self):
"""The Path of the ``Webware/WebKit/`` directory."""
return self._server.webKitPath()
def name(self):
"""The name by which this was started. Usually `AppServer`."""
return sys.argv[0]
def writeActivityLog(self, trans):
"""Write an entry to the activity log.
Writes an entry to the script log file. Uses settings
``ActivityLogFilename`` and ``ActivityLogColumns``.
"""
filename = self.serverSidePath(
self.setting('ActivityLogFilename'))
if os.path.exists(filename):
f = open(filename, 'a')
else:
f = open(filename, 'w')
f.write(','.join(self.setting('ActivityLogColumns')) + '\n')
values = []
objects = UserDict({
'application': self,
'transaction': trans,
'request': trans.request(),
'response': trans.response(),
'servlet': trans.servlet(),
'session': trans._session,
})
for column in self.setting('ActivityLogColumns'):
try:
value = objects.valueForName(column)
except Exception:
value = '(unknown)'
if type(value) is FloatType:
value = '%0.2f' % value
else:
value = str(value)
values.append(value)
f.write(','.join(values) + '\n')
f.close()
for k in objects.keys():
objects[k] = None
def dispatchRawRequest(self, requestDict, strmOut):
"""Dispatch a raw request.
Dispatch a request as passed from the Adapter through the AppServer.
This method creates the request, response, and transaction object,
then runs (via `runTransaction`) the transaction. It also catches any
exceptions, which are then passed on to `handleExceptionInTransaction`.
"""
request = self.createRequestForDict(requestDict)
if request:
trans = Transaction(application=self, request=request)
if trans:
request.setTransaction(trans)
response = request.responseClass()(trans, strmOut)
if response:
trans.setResponse(response)
self.runTransaction(trans)
try:
trans.response().deliver()
except ConnectionAbortedError, err:
trans.setError(err)
response.clearTransaction()
while 1:
servlet = request.pop()
if not servlet:
break
self.returnServlet(servlet)
servlet.resetKeyBindings()
servlet = trans.servlet()
if servlet:
self.returnServlet(servlet)
if self.setting('LogActivity'):
self.writeActivityLog(trans)
request.clearTransaction()
return trans
def createRequestForDict(self, requestDict):
"""Create request object for a given dictionary.
Create a request object (subclass of `Request`) given the raw
dictionary as passed by the adapter.
The class of the request may be based on the contents of the
dictionary (though only `HTTPRequest` is currently created),
and the request will later determine the class of the response.
Called by `dispatchRawRequest`.
"""
format = requestDict['format']
assert format == 'CGI'
request = HTTPRequest(requestDict)
requestDict['requestObject'] = request
return request
def runTransaction(self, trans):
"""Run transation.
Executes the transaction, handling HTTPException errors.
Finds the servlet (using the root parser, probably
`URLParser.ContextParser`, to find the servlet for the
transaction, then calling `runTransactionViaServlet`.
Called by `dispatchRawRequest`.
"""
findServlet = self.rootURLParser().findServletForTransaction
try:
self.removePathSession(trans)
servlet = findServlet(trans)
self.handlePathSession(trans)
self.runTransactionViaServlet(servlet, trans)
except EndResponse:
pass
except ConnectionAbortedError, err:
trans.setError(err)
except (KeyboardInterrupt, SystemExit):
raise
except:
errClass, err = sys.exc_info()[:2]
if not err:
err, errClass = errClass, None
urls = {}
while 1:
trans.setError(err)
isHTTPException = isinstance(err, HTTPException)
if isHTTPException:
err.setTransaction(trans)
if trans.response().isCommitted():
isHTTPException = False
break
if not self._errorPage:
break
url = errClass and self.errorPage(errClass)
if isHTTPException and not url:
code = err.code()
if self._errorPage.has_key(code):
url = self._errorPage[code]
if not url or urls.has_key(url):
break
urls[url] = None
try:
self.forward(trans, url)
except EndResponse:
pass
except ConnectionAbortedError, err:
trans.setError(err)
except (KeyboardInterrupt, SystemExit):
raise
except:
errClass, err = sys.exc_info()[:2]
if not err:
err, errClass = errClass, None
url = None
if url:
return
if isHTTPException:
trans.response().displayError(err)
else:
if self.setting('EnterDebuggerOnException') \
and sys.stdin.isatty():
import pdb
pdb.post_mortem(sys.exc_info()[2])
self.handleExceptionInTransaction(
sys.exc_info(), trans)
def runTransactionViaServlet(self, servlet, trans):
"""Execute the transaction using the servlet.
This is the `awake`/`respond`/`sleep` sequence of calls, or if
the servlet supports it, a single `runTransaction` call (which is
presumed to make the awake/respond/sleep calls on its own). Using
`runTransaction` allows the servlet to override the basic call
sequence, or catch errors from that sequence.
Called by `runTransaction`.
"""
trans.setServlet(servlet)
if hasattr(servlet, 'runTransaction'):
servlet.runTransaction(trans)
else:
try:
trans.awake()
trans.respond()
finally:
trans.sleep()
def forward(self, trans, url):
"""Forward the request to a different (internal) URL.
The transaction's URL is changed to point to the new servlet,
and the transaction is simply run again.
Output is _not_ accumulated, so if the original servlet had any output,
the new output will _replace_ the old output.
You can change the request in place to control the servlet you are
forwarding to -- using methods like `HTTPRequest.setField`.
"""
trans.response().reset()
self.includeURL(trans, url)
raise EndResponse
def callMethodOfServlet(self, trans, url, method, *args, **kw):
"""Call method of another servlet.
Call a method of the servlet referred to by the URL. Calls sleep()
and awake() before and after the method call. Or, if the servlet
defines it, then `runMethodForTransaction` is used (analogous to the
use of `runTransaction` in `forward`).
The entire process is similar to `forward`, except that instead of
`respond`, `method` is called (`method` should be a string, `*args`
and `**kw` are passed as arguments to that method).
"""
request = trans.request()
request.push(trans.servlet(),
self.resolveInternalRelativePath(trans, url))
servlet = self.rootURLParser().findServletForTransaction(trans)
trans.setServlet(servlet)
if hasattr(servlet, 'runMethodForTransaction'):
result = servlet.runMethodForTransaction(
trans, method, *args, **kw)
else:
servlet.awake(trans)
result = getattr(servlet, method)(*args, **kw)
servlet.sleep(trans)
self.returnServlet(servlet)
servlet.resetKeyBindings()
trans.setServlet(request.pop())
return result
def includeURL(self, trans, url):
"""Include another servlet.
Include the servlet given by the URL. Like `forward`,
except control is ultimately returned to the servlet.
"""
request = trans.request()
request.push(trans.servlet(),
self.resolveInternalRelativePath(trans, url))
servlet = self.rootURLParser().findServletForTransaction(trans)
trans.setServlet(servlet)
try:
servlet.runTransaction(trans)
except EndResponse:
pass
self.returnServlet(servlet)
servlet.resetKeyBindings()
trans.setServlet(request.pop())
def resolveInternalRelativePath(self, trans, url):
"""Return the absolute internal path.
Given a URL, return the absolute internal URL.
URLs are assumed relative to the current URL.
Absolute paths are returned unchanged.
"""
if not url.startswith('/'):
origDir = trans.request().urlPath()
if not origDir.endswith('/'):
origDir = os.path.dirname(origDir)
if not origDir.endswith('/'):
origDir += '/'
url = origDir + url
parts = []
for part in url.split('/'):
if parts and part == '..':
parts.pop()
elif part != '.':
parts.append(part)
return '/'.join(parts)
def returnServlet(self, servlet):
"""Return the servlet to its pool."""
servlet.close()
def errorPage(self, errorClass):
"""Get the error page url corresponding to an error class."""
if self._errorPage.has_key(errorClass.__name__):
return self._errorPage[errorClass.__name__]
if errorClass is not Exception:
for errorClass in errorClass.__bases__:
url = self.errorPage(errorClass)
if url:
return url
def handleException(self):
"""Handle exceptions.
This should only be used in cases where there is no transaction object,
for example if an exception occurs when attempting to save a session
to disk.
"""
self._exceptionHandlerClass(self, None, sys.exc_info())
def handleExceptionInTransaction(self, excInfo, trans):
"""Handle exception with info.
Handles exception `excInfo` (as returned by `sys.exc_info()`)
that was generated by `transaction`. It may display the exception
report, email the report, etc., handled by
`ExceptionHandler.ExceptionHandler`.
"""
request = trans.request()
editlink = request.adapterName() + "/Admin/EditFile"
self._exceptionHandlerClass(self, trans, excInfo,
{"editlink": editlink})
def rootURLParser(self):
"""Accessor: the Rool URL parser.
URL parsing (as defined by subclasses of `URLParser.URLParser`)
starts here. Other parsers are called in turn by this parser.
"""
return self._rootURLParser
def hasContext(self, name):
"""Checks whether context `name` exist."""
return self._rootURLParser._contexts.has_key(name)
def addContext(self, name, path):
"""Add a context by named `name`, rooted at `path`.
This gets imported as a package, and the last directory
of `path` does not have to match the context name.
(The package will be named `name`, regardless of `path`).
Delegated to `URLParser.ContextParser`.
"""
self._rootURLParser.addContext(name, path)
def addServletFactory(self, factory):
"""Add a ServletFactory.
Delegated to the `URLParser.ServletFactoryManager` singleton.
"""
URLParser.ServletFactoryManager.addServletFactory(factory)
def contexts(self):
"""Return a dictionary of context-name: context-path."""
return self._rootURLParser._contexts
def writeExceptionReport(self, handler):
pass
def removePathSession(self, trans):
"""Remove a possible session identifier from the path."""
request = trans.request()
p = request._pathInfo
if p:
p = p.split('/', 2)
if len(p) > 1 and not p[0] and '=' in p[1]:
s = p[1]
request._pathSID = s.split('=', 1)
s += '/'
del p[1]
env = request.environ()
request._pathInfo = env['PATH_INFO'] = '/'.join(p)
for v in ('REQUEST_URI', 'PATH_TRANSLATED'):
if env.has_key(v):
env[v] = env[v].replace(s, '', 1)
else:
request._pathSID = None
else:
request._pathSID = None
def handlePathSession(self, trans):
"""Handle the session identifier that has been found in the path."""
request = trans.request()
if request._pathSID:
sessionName = self.sessionName(trans)
if request._pathSID[0] == sessionName:
if request.hasCookie(sessionName):
self.handleUnnecessaryPathSession(trans)
request.cookies()[sessionName] = request._pathSID[1]
else:
if self._autoPathSessions:
if not request.hasCookie(sessionName):
self.handleMissingPathSession(trans)
else:
if self._autoPathSessions:
if not request.hasCookie(self.sessionName(trans)):
self.handleMissingPathSession(trans)
def handleMissingPathSession(self, trans):
"""Redirect requests without session info in the path.
If UseAutomaticPathSessions is enabled in Application.config
we redirect the browser to an absolute url with SID in path
http://gandalf/a/_SID_=2001080221301877755/Examples/
_SID_ is extracted and removed from path in HTTPRequest.py
This is for convinient building of webapps that must not
depend on cookie support.
Note that we create an absolute URL with scheme and hostname
because otherwise IIS will only cause an internal redirect.
"""
request = trans.request()
url = '%s://%s%s/%s=%s%s%s%s' % (request.scheme(),
request.hostAndPort(), request.servletPath(),
self.sessionName(trans), trans.session().identifier(),
request.pathInfo(), request.extraURLPath() or '',
request.queryString() and '?' + request.queryString() or '')
if self.setting('Debug')['Sessions']:
print '>> [sessions] handling UseAutomaticPathSessions, ' \
'redirecting to', url
trans.response().sendRedirect(url)
raise EndResponse
def handleUnnecessaryPathSession(self, trans):
"""Redirect request with unnecessary session info in the path.
This is called if it has been determined that the request has a path
session, but also cookies. In that case we redirect to eliminate the
unnecessary path session.
"""
request = trans.request()
url = '%s://%s%s%s%s%s' % (request.scheme(),
request.hostAndPort(), request.servletPath(),
request.pathInfo(), request.extraURLPath() or '',
request.queryString() and '?' + request.queryString() or '')
if self.setting('Debug')['Sessions']:
print ">> [sessions] handling unnecessary path session, ' \
'redirecting to", url
trans.response().sendRedirect(url)
raise EndResponse