-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/16/2012 05:23 AM, xuemei wrote:
> Thanks for your reply, I wish you got a good weekend. Thanks, it was a pretty good one :) > I am trying to describe it in small step to make people understand > more easily, I dont believe it is very narrow thing. The reason I asked for a higher-level description of your goals is that there may be other ways to do what you want. There is usually "more than one way" to do a given thing in OpenNMS, and sometimes (especially when seeking help) it helps to step back from the code and talk about your chosen approach. > 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. So this is not something that you wish to do in real-time? I hope that's the case, because back-filling data will be very I/O-intensive compared to just writing a single sample. I suggest looking at the "rrd-converter" tool, which was designed for turning 1:1 style JRobin files (one DS per file) into storeByGroup style JRobin files (multiple DS per file). You should find the right pattern there for building a new JRobin file from in-memory data. Here's the link to the code: http://opennms.git.sourceforge.net/git/gitweb.cgi?p=opennms/opennms;a=tree;f=opennms-tools/opennms-rrd-converter;h=27763e6f8a518af6eb31dfb1220742f7aff3746b;hb=HEAD You'll notice that we don't use the RrdStrategy code in this utility, but go directly to the JRobin APIs; that's because the strategy was never designed to provide the level of functionality required for these operations. > 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. I've never looked into just how the RrdInspector does its work, but it's probably the same or similar mechanism to the converter. JRobin itself is also free software, so you can take a look at the RrdInspector class to find out. http://jrobin.git.sourceforge.net/git/gitweb-index.cgi > 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. Welcome! Someday I would like to have some experience working in Paris :) - -jeff -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJQBDO9AAoJEEfedldKS64seggP/1KpqlHk02wE0Ww+wEYFaCYV zJhdkw/D+08utoCKe/qnRRZmUq8SAYPepuLN2oOCo6ESJk7v2XF5D2qvyDPpIdWb mUvqQYoQlG8bDesPBAt8jWuVfVfO+hIflacBtaOkbgaAnJDlFuXCJAWN8uJcfE50 ct/GBnpqWDgEzumq/m9lAdNKxduX/At5HmDzyJ0Eme2LMh6ytrV4L3IPPEfd9Neu zUvBDQkZADNyv2XbL3zxQiZ8EyKMwYMcfVL+ijUsKQFn64WkDZTJQLttB+e4qKXe u60cWSEVrpOG/pTlFk2d+DRY9esV5jyo+b6Bnyjqyu4ojLJN2e7SpNUdz+R6n5ZR 0tJNSbwViVvOWYI5RW8iTBObEA9vqeqixS/f0tnGbaGw/LBtuciAOJBmQ0SGANoH EJrjuPKEs31TdZ5VGsJb+R71CfSxBH4aPf5FkYRKkGH1YfeUjRwt2W6qgWZXk9ig yIJlERZt43EOPI8YQeETTjeMrQ8FER2gv00daa/sTxKkTADP1npf93cUqFYbhrAU cHGdpZlmHLdBl/vUoHzybsyojk8rbc5y10daUeXSnNVL+KYO61whewTPcjwGh4qV Ks53SCjV3bh/hLB+bfQJbJya509ijDswQiKMhyaw+W7WA1PfsyoRrx7n03wbaysR R4txBYBChanSl0T4XOTm =YzFh -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Please read the OpenNMS Mailing List FAQ: http://www.opennms.org/index.php/Mailing_List_FAQ opennms-devel mailing list To *unsubscribe* or change your subscription options, see the bottom of this page: https://lists.sourceforge.net/lists/listinfo/opennms-devel
