[rrd-developers] Re: rrdtool graph (fwd)
oetiker at ee.ethz.ch
Sun Aug 12 19:28:04 MEST 2001
Today Alex van den Bogaerdt wrote:
| 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?
Moving the data manipulation stuff to an extra module certainly
sounds like a good idea to me ... we could think of it as an
extended version of rrdtool fetch ... how would you go about it?
What aobut the interfaces ?
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