Re: [opennms-devel] RrdUtils.updateFile skip the timestamp which is expired

[xuemei <xue...@gm...>]

Thanks for your reply, I wish you got a good weekend.
---> If you explain your broader goal, rather than the very narrow thing you
are trying to do, we can help more.
I am trying to describe it in small step to make people understand more
easily, I dont believe it is very narrow thing.
I wana avoid the gap in the jrb file, and the gap is caused by some late
response, can be whatever reason. At least it exists in openNMS when we
check the jrb file, lots of period has NaN.
What I am trying to do is to fill those gap, I got all the data, but not
able to update the file when the timestamp is earlier than last record.

I guess it is the store method in the RrdDb.class, would like get some idea
of people here.

synchronized void store(Sample sample) throws IOException, RrdException {
		if (closed) {
			throw new RrdException("RRD already closed, cannot store this  sample");
		}
		long newTime = sample.getTime();
		long lastTime = header.getLastUpdateTime();
		if (lastTime >= newTime) {
			throw new RrdException("Bad sample timestamp " + newTime +
					". Last update time was " + lastTime + ", at least one second step is
required");
		}
		double[] newValues = sample.getValues();
		for (int i = 0; i < datasources.length; i++) {
			double newValue = newValues[i];
			datasources[i].process(newTime, newValue);
		}
		header.setLastUpdateTime(newTime);
	}

But as I said, if the inspector tool could insert value and save
successfully, I would like to see at which step I could modidy the rrd tool.

By the way, I am a development engineer workinig in Paris, most of my
clients are from telecom, and I would like to have some experience for
implementing openNMS. 

Thanks


xuemei



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