[Zope] Xron Problem

[George Stroussopoulos]

 Hi. I have been using Xron 0.0.10 inside  Zope 251. 
 I have a problem in xrondtml method. 
 It seems that when i schedule a xron event to run at a specific time, it 
 runs  but it fails to reschedule itself  for the next run. 
 It always fails to rescedule and disarms the xron (time goes to 1970 
 [datetime(0) not in eventtime + reschedule interval] [the method i call 
 with xron runs correctly]. 
 I use xron in several parts of my code.

 It works fine in a part of code [it manages correctly to reschedule 
 itself] but when i am trying to trigger it manually i get 
 the message to download it.In other part of code it works only manually 
 an not in the background procedure. 
 Below is a part of the code to help you:  
 I use xron inside a class called AllChannelsFolder. 
 In the init method i wrote: 
 def __init__(self, id, title, description,proxy_server_url, 
 theContainer):         
 """ 
 Acquire the parent properties 
 """ 
 self = self.__of__(theContainer) 
 self.id = id 
 self.title = title 
 self.description = description 
 self.proxy_server_url = proxy_server_url 
 self.discoveryExecuteAt=DateTime()+1.0 # initial value is tomorrow 
 self.discoveryPeriodDays=0.0 

         #Initialise the periodic discovery event 
 newEventId=id+'_XronDTMLMethod' 
 newEventTitle=title+' Discovery method (using Xron)' 
 discoverFile='<dtml-call expr="this().findAllChannels(REQUEST)">' 
 newEvent=XronDTMLMethod(newEventId, newEventTitle, discoverFile, 
 self.discoveryExecuteAt, self.discoveryPeriodDays) 
 self._setObject(newEventId, newEvent) 
 self.discoverXronDTMLMethod=newEvent 
         Inside the findAllChannels method that xron calls :          
... in the end of code i have this:         
 if REQUEST is not None: 
 try: 
 u=self.absolute_url() 
 except: 
 # Log the catched exception 
 # 
 logExc(__name__, TRACE, MSG_URL_COMPUTING_EXC) 
 if rfind(REQUEST['URL']) == -1: 
 # We are in the manage_trigger() or in the trigger() 
 method of the Xron contained object 
 # Redirect to portal URL, i.e. URL2 
 u=REQUEST['URL2'] 
 else: 
 # We were called from the Discover tab => use URL1 
 for redirection 
 u=REQUEST['URL1'] 
 u2=u+'/manage_workspace' 
 REQUEST.RESPONSE.redirect(u2) 
 return self.loadingError 
  The above code works fine when i schedule it, but it does not work with 
 the manually way[trigger]. 
   In the following code i use xron in a class named PortalFolder:  
 the init method is basiclly the same: 
 def __init__(self, id, title, description,theContainer, 
 proxy_server_url=''): 
 """ 
 Constructor 
 """ 
 self = self.__of__(theContainer) 
 self.id = id 
 self.title = title 
 self.description = description 
 self.discoveryExecuteAt=DateTime()+1.0 # initial value is tomorrow 
 self.discoveryPeriodDays=0.0 

         # Initialise the periodic discovery event 
 newEventId=id+'_XronDTMLMethod' 
 newEventTitle=title+' Discovery method (using Xron)' 
 discoverFile='<dtml-call expr="this().discover(REQUEST)">' 
 newEvent=XronDTMLMethod(newEventId, newEventTitle, discoverFile, 
 self.discoveryExecuteAt, self.discoveryPeriodDays) 
 self._setObject(newEventId, newEvent) 
 self.discoverXronDTMLMethod=newEvent 
 self.proxy_server_url=proxy_server_url 
      the discover method that xron calls has in the end i have: 
        if REQUEST is not None:             
 try: 
 u=self.absolute_url() 
 except: 
 #u=REQUEST['URL1'] 
 logExc(__name__, TRACE, MSG_URL_COMPUTING_EXC) 
 if rfind(REQUEST['URL']) == -1: 
	 u=REQUEST['URL2'] 
 else: 
	 u=REQUEST['URL1'] 
 u2=u+'/manage_workspace' 

 REQUEST.RESPONSE.redirect(u2) 
 return theResult 

 The method discover runs ok but xron now fails to reschedule itself. 
 It throws this : 
 2002-08-06T07:20:42 PROBLEM(100) Products.Xron.Loggerr 
 Trigger event: 
 http://exterminator:8082/Tests/CPM_V2/Portals/Portals_XronDTMLMethod 
 Trigger time: 2002/08/06 10:20:40 GMT+3 
 Failed to trigger event. 
 Type=bci.ServerError 
 Val=302 (File: Unknown Line: Unknown) 
 302 Moved Temporarily for 
 http://exterminator:8082/Tests/CPM_V2/Portals/Portals_XronDTMLMethod/trigger
------
2002-08-06T07:20:42 PROBLEM(100) Products.Xron.Loggerr Disarmed event


[Note: I have setup permissions with proxy roles.]


Can anyone help me?
Am i missing something?
Any help and suggestion could be usefull!
I hope i made clear myself.

Thanks in advance.



Georgios Stroussopoulos
Athens
Greece
Software Engineer. 
strusos@yahoo.com