[collectd] [PATCH 1/2] Add collectd-flush command line utility.

Sebastian Harl sh at tokkee.org
Mon Aug 9 00:17:50 CEST 2010

Hi Håkon,

On Fri, Aug 06, 2010 at 01:22:53PM +0200, Florian Forster wrote:
> On Thu, Aug 05, 2010 at 04:37:45PM +0200, Hakon-Dugstad.Johnsen at telenor.com wrote:
> > collectd-flush is a small command-line utility which uses
> > libcollectdclient to flush collectd through the unixsock plugin.
> > I am no C wizard, so please bear with me if I have done something a
> > stupid way. :)
> Your code looks fine to me :) I've found one missing "break", but that's
> it. I'm a bit concerned about using "getopt_long", since - to the best
> of my knowledge - that's a GNU extension and not portable. Unless I'm
> mistaken I will probably remove the long option names and go back to
> "getopt".

Yes, that's a GNU extension.

I've removed the long options and done a bit of more hacking on that
tool and turned it into a more powerful frontend to libcollectdclient.
The tool is now called ‘collectdctl’ (collectd control interface). You
can find the code in my ‘sh/next’ branch in my Git repo [1].

The calling syntax now looks similar to the text-based protocol used by
the ‘unixsock’ plugin itself, i.e.:

  collectdctl <command> [command options]


  collectdctl -s /path/to/unixsock flush host/foo/bar


  collectdctl listval

Some possible TODOs:

 * Add support for "PUTVAL" and "PUTNOTIF". The latter would have to be
   added to libcollectclient first. The former is a bit hard to
   implement since lcc_putval() expects the data-type to be passed along
   with the data-set. Not sure yet, how to properly solve that.

 * Add an interactive mode (similar to a shell) and support reading
   multiple commands from a file (script). This will require properly
   parsing input lines. This is already done in utils_cmd_* and the
   appropriate code should probably be factored out for that.

 * More testing ;-)

Any feedback, suggestions, etc. would be very appreciated.


[1] git://git.tokkee.org/collectd.git

Sebastian "tokkee" Harl +++ GnuPG-ID: 0x8501C7FC +++ http://tokkee.org/

Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety.         -- Benjamin Franklin

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