[rrd-developers] Question: rrdtool pipe interface - restore support?

[Tobias Oetiker]

Hi Peter,

Today Peter Stamfest wrote:

> I have implemented this. And yes, it might be useful. I might support it
> in my java interface to rrd.
>
> My implementation can be found in branch pipe-restore in my repo at
> https://github.com/stamfest/rrdtool-1.x#
>
> Note that I haven't rebased/merged the stuff into master. If I should do
> this, just say so.

looks good ... and yes, patchs should first apply to master, if you
makeit apply to 1.4.x too, that is a bonus :-)

cheers
tobi


> peter
>
>
>
> Am 2014-02-16 10:00, schrieb Tobi Oetiker:
> > I think it should be possible to get this to work since I am using the
> > pull parser in rrdtool restore
> >
> > cheers
> >
> > Tobias Oetiker
> > tobi at oetiker.ch <mailto:tobi at oetiker.ch>
> > 062 775 9902
> >
> > On 16.02.2014, at 03:21, Stanislav Sinyagin <ssinyagin at yahoo.com
> > <mailto:ssinyagin at yahoo.com>> wrote:
> >
> >> I don't think it does. Why isn't a usual file good enough? You can
> >> store it in tmpfs if the i/o speed is the concern. But usually
> >> rrdtool is slower than disk i/o anyway.
> >>
> >> What I typically do, is execute rrdtool dump from an SSH command, so
> >> that its remote stdout is the ssh's local stdout, and save the XML to
> >> a local temporary file. Next the local rrdtool restore would slurp
> >> that file.
> >>
> >> If you need the XML to tweak some RRD parameter, you can use
> >> RRD::Tweak Perl module instead.
> >>
> >> ------------------------------------------------------------------------
> >> *From:* Peter Stamfest <peter at stamfest.at <mailto:peter at stamfest.at>>
> >> *To:* rrd-developers at lists.oetiker.ch
> >> <mailto:rrd-developers at lists.oetiker.ch>
> >> *Sent:* Friday, February 14, 2014 9:39 PM
> >> *Subject:* [rrd-developers] Question: rrdtool pipe interface -
> >> restore support?
> >>
> >> Hi,
> >>
> >> Does the rrdtool pipe interface somehow support an in-stream xml restore
> >> command?
> >>
> >> "dump" is  (mostly) working as expected, although one has to look for
> >> the "OK" response line to find out where the xml ends, but this is not a
> >> problem. "restore" however has the problem that it does not take input
> >> over the pipe interface. Using "-" as XML input seems to *partly* work,
> >> but fails with a parser error. Using /dev/stdin works when using the
> >> pipe interface on the command line, but can't work when using the pipe
> >> over a TCP connection....
> >>
> >> Any ideas?
> >>
> >> I admit that I am using a rather old version: 1.4.7...
> >>
> >> peter
> >>
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> >>
> >>
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> >
> >
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>
>
>

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900