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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

3115.0. "NOTIFICATION use GETEVENT on fullINSTANCE wildcarded global entity?" by KETJE::PACCO () Tue Jun 02 1992 11:52

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3115.1Your GETEVENT directive should support Global WildcardsNANOVX::ROBERTSKeith Roberts - DECmcc Toolkit TeamTue Jun 02 1992 14:2513
  Dominique,

  I don't know what the Notification FM is doing .. or why .. but your
  Management Module GETEVENT directive should support a Global Wildcard.

  The good news ... your directive need only validate (ie, accept) a global
  wildcard for GETEVENT and pass it on to the event manager; as the event
  manager can handle a global wildcard.

  If you are using the Toolkit Design Framework, check out the the Example
  FM GETEVENT directive source code for more information.

  /keith
3115.2I regret this became a requirement !KETJE::PACCOFri Jun 05 1992 18:2532
    Keith,
    
    Thanks for this info.  I assume this requirement is one of the new
    1.2.7 field test, because I have never encountered this before.
    
    I haven't seen this requirement in the books too. I hope all these "special"
    requirements will be CLEARLY documented in the developement manuals,
    otherwise we will suffer from phone calls from all customers developing
    management modules.
    
    This change in requirement has broken two of my access modules, and
    makes the implementation of one of these now a LOT more complex now.
    
    In fact because my access module has now to support a wildcarded global
    entity for the GETEVENT directive, and because I get my events from
    a GETEVENT to the generic SNMP access module, I now will receive ALL SNMP
    events, even the ones in which I am not interested in, and the amount of
    these can be 100 times more than the ones I have to consider.
    This means first a lot of CPU cycles lost.
    
    But the MAJOR PROBLEM is now that the AM should try to find out if a
    SNMP event has to be processed or has to be discarded, just based on the
    IP address.  The SNMP event carries NO information about the type of
    entity from which it was generated.
    
    The conclusion of all this:
    This requirement implies a VERY serious increase in COMPLEXITY of
    the AM coding to work around this, therefore also several more weeks
    for developement, and a serious impact on the (already lousy) performance
    of the system.
    
    Dominique.
3115.3Services Offered and Services RequiredTOOK::STRUTTManagement - the one word oxymoronSun Jun 07 1992 05:0216
    I would expect that the 'requirement' that notification requires the
    service of Getevent on a global wildcard to be located in the MRM for
    the Notification FM.
    
    It is important that MM writers understand the importance of matching
    'services offered' by one module with the 'services required' by
    another in order that the two modules interoperate. We have chosen MRMs
    as the means to document the services:
    	PMs generally only require services
    	AMs generally only offer services
    	FMs usually both offer services (to PMs or to other FMs)
    		and require services (of AMs or of other AMs)
    (Of course, all MMs would normally offer services corresponding to
    their self management).
    
    Colin
3115.4Some Notificaiton HelpNANOVX::ROBERTSKeith Roberts - DECmcc Toolkit TeamMon Jun 08 1992 12:365
  Could someone from the Notification Team help here.  What are the
  requirements (services required) of the Notification FM?

  /keith
3115.5Also in the RELEASE NOTES please.KETJE::PACCOTue Jun 09 1992 19:0411
    As a MM writer it would be nice to be "informed" about these changes,
    and not find out in the hard way that suddenly from a certain version
    on something does not work any more or breaks.  Just updating the
    NOTIFICATION MRM is not enough, because you cannot expect people  to go
    through ALL manuals to find out of something changes compared to the
    previous version.
    
    This is clearly something to write down in the release notes !
    
    Dominique.