[rrd-developers] rrdtool graph

[Alex van den Bogaerdt]

Hi,

It seems to me that the graph portion of rrdtool is turning into
a front-end type of program rather than a backend program.  This
is not a bad thing however now may be the time to rethink about
this.  The grapher portion becomes quite large.

Just as a proposal for discussion:  what if we take the DEF,CDEF
and VDEF stuff apart.  This generates arrays of numbers and can
change the databases (Jake's stuff).  Processing the arrays is
IMHO a task for a front-end application which could be called
rrdgraph.  The same arrays could be fetched by another front-end
application called rrdreport.

Of course, the current "rrdtool graph" will not have to go per se.
It can be made a hook to the front-end if desired.  It may be
enough to modify rrdtool fetch slightly and in the new rrdgraph
front-end application we'd make DEF a hook to fetch.
Consolidating the arrays into something suitable for graphing is
already a job for the front-end part.

What do you all think about this?

cheers,
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