[Orca-users] Re: writing data to my input file to orca if no new data is found

[Blair Zajac]

Jeff,

I see what you want.  Probably the way to do this is to edit the
flush_data subroutine in lib/Orca/RRDFile.pm.  It should look
at the previous printed data point and compare it to the
one to add if its more than the interval of time away, generate
a new data point of 0.  This will do what you want.

Orca uses object oriented Perl, so each class has its own new
subroutine.  I would pick up a newer version of "Learning Perl"
that described Perl 5 or read the perlobj, perlreftut and other
manual pages that describe object oriented Perl.

Blair

Jeff Lucas wrote:
> 
> From: "Jeff Lucas" <lucasjh at tfn.com>
> 
> Blair -
> 
> Thanks so much for your quick response.
> 
> I'm definately noticing the blank area(s) in the graphs when there is
> no data, however, the "percentages" stay at 100% as the calculation
> seems to only use data that is collected. I want orca to write a line
> to the data input file (if it finds that no new data arrived) so that
> it will use the zeroes in calculating a more accurate percentage of
> uptime.
> 
> i.e. it seems like there is logic in orca to check if the data has
> been updated since the loop, before it attempts to generate graphs
> again. If it determines there was no new data, it skips creating the
> graphs, correct? Couldn't I just tell it to append a dummy line to my
> data input file at that point?
> 
> Here's a sample of my data input file...
> # tail -5 tabloid.uptime
> 954183802 100 100
> 954183922 100 100
> 954184043 100 100
> 954184163 100 100
> 954184283 100 100
> 
> As I'm new to programming, I'm having trouble following the logic of
> orca program. i.e. I noticed there are multiple subroutines called
> "new." How can there be multiple subroutines with the same name?
> Wouldn't this confuse perl? Is there a perl book you can recommend
> that would help me to better understand?
> 
> I apologize for all of the questions but my "Learing Perl" book is
> not much help.
> 
> Thanks again.
> 
> Regards,
> Jeff
> 
> --- In orca-users at onelist.com, Blair Zajac <blair at a...> wrote:
> > I don't think this will be too easy.  When Orca doesn't find
> > any data, it won't plot any data, so maybe you could always
> > plot 1 when the system is up.  Will this work?
> >
> > For example, look at the image at
> >
> > http://www.gps.caltech.edu/~blair/
> >
> > It clearly shows when no data was being collected.
> >
> > Blair
> >
> > Jeff Lucas wrote:
> > >
> > > From: "Jeff Lucas" <lucasjh at tfn.com>
> > >
> > > I am currently using orca to graph "uptime" data collected from
> > > multiple systems. The data files consist of three columns...
> > > epoch sys_uptime_value app_uptime_value
> > >
> > > epoch - number of seconds since ???? 1971
> > > sys_uptime - 0 or 1 (system either up or down)
> > > app_uptime - 0 or 1 (app either up or down)
> > >
> > > Each system has its own data file. I've attempted reading and
> > > modifying orca so that when it does NOT find the input data file
> > > updated (it assumes the sys and app are down), it updates it by
> > > appending a line to the corresponding input data file
> containing...
> > >
> > > epoch 0 0
> > >
> > > Unfortunately, I've been unsuccessful.
> > >
> > > Can someone tell me if this can be done within the config file or
> if
> > > it needs to be done in the orca program, and if so, where/how.
> > >
> > > Much thanks in advance!
> > >
> > > -Jeff
> > >
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