In article <n58jtu$ot1$1...@softins.softins.co.uk>, Tony Mountifield <t...@mountifield.org> wrote: > In article > <CADgchnuMGkA=tQdMtACMWPYX2TgDUwKfbf3g=d+fa3v5bp+...@mail.gmail.com>, > Athanasios Silis <athanasios.si...@gmail.com> wrote: > > Hello there, > > I am trying to use rrd_update_r() to update a rrdb through a c++ program. > > So I am generating the argc/argv on the fly to pass into the function. > > > > The originating string is the following: > > > > time_t tm = time(NULL); > > stringstream ss; > > ss << tm; > > string updstr = string("update sensors.rrd \ > > --template CO2unf:CO2fil:O2pp:O2pct:O2temp:O2pres ")\ > > + ss.str() + string(":1015:1000:123:20.63:38.48:987"); > > > > I get this error from rrd_get_error(): > > sensors.rrd: expected timestamp not found in data source from update > > > > Is timestamp not accepted in seconds from EPOCH? > > Can you show your code all the way from the above until the call to > rrd_update_r()? > > Also, show the value of updstr, to make sure it is what you think it is?
I got your private email, to which I'll respond, but other people may be interested in answers, so it's better to continue here. Have a look at http://stackoverflow.com/questions/6681090/how-to-call-threadsafe-rrd-update-r-round-robin-database-function-with-c-api In particular, I think you need to give rrd_update_r() the template separately, rather than as a --template argument. Cheesr Tony -- Tony Mountifield Work: t...@softins.co.uk - http://www.softins.co.uk Play: t...@mountifield.org - http://tony.mountifield.org _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users