Hi Scott, On Fri, Jun 20, 2008 at 01:53:46PM -0700, Scott Brumbaugh wrote: > > my thinking was that we could have a RRD Daemon running that would > > the CLI would talk to instead of accessing the files directly.
I've had the same idea, but never really had the _need_ to actually sit down and write such a daemon. You mail motivated me enough to finally do it, though ;) What I have so far I nowhere near stable - the code is less than 24 hours old. So I post this here for you to review and complain about concepts at a stage where fundamental changes are still possible. The package consists of three parts: - rrdd (RRD daemon; if you like, call this R2D2 ;) Daemon that opens a UNIX socket (right now hard coded to /tmp/rrdd.sock), waits for commands (only `update' is implemented right now) and caches the values using `libavl1'[1]. The code will actually call `rrd_update_r' every 300 seconds for each file. - librrdc (RRD client library) Library that abstracts socket creation and encapsulates the network protocol. - rrdc (RRD client) Simply wrapper around the `rrdtool' binary. If the ``command'' is `update' dispatches the actual values to `rrdd' using `librrdc', otherwise exec(2)s `rrdtool'. Of course all hard limits are due to the early development stage of this code - I don't say that 300 seconds is good enough for everybody ;) More commands may be added later, such as `flush' or `stats' (I *know* you want graphs of your graphing infrastructure! ;). You can pull my Git repository from <git://git.verplant.org/rrdd.git> or browse the source and change sets online at <http://git.verplant.org/?p=rrdd.git;a=summary> Oh, by the way: RRDd started out as a working title, but as we all know these names tend to stick. A quick search using Google did not turn up and other RRDTool related projects. If you know one, please let me know so I can change the name. Regards, -octo [1] That's the name of the Debian package. Unfortunately I didn't find a web page for the library :/ -- Florian octo Forster Hacker in training GnuPG: 0x91523C3D http://verplant.org/
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