[aprssig] APRS-IS Database :: Query for static dataset

Nagi Punyamurthula n0agi at n0agi.com
Sun Jul 19 12:58:17 CDT 2015


Thanks – that’s what I thought.
What made me think of asking this question was given that the APRS-IS server checks for packet dups submissions, I was thinking, there had to be previous records stored somewhere to compare w/.

So, that begs a question; how does the APRS-IS determine whether a record is dup vs not ? and what  does it compare the new incoming packet to.



From: Kenneth Finnegan [mailto:kennethfinnegan2007 at gmail.com]
Sent: Sunday, July 19, 2015 11:02 AM
To: TAPR APRS Mailing List <aprssig at tapr.org>; Nagi Punyamurthula <n0agi at n0agi.com>
Cc: mnaprs at googlegroups.com
Subject: Re: [aprssig] APRS-IS Database :: Query for static dataset


There is no such thing as the APRS IS database pool. It is just a firehose of packets and if you want to see past data you need to have saved it when it came through.

Kenneth Finnegan
On Jul 19, 2015 8:48 AM, "Nagi Punyamurthula via aprssig" <aprssig at tapr.org<mailto:aprssig at tapr.org>> wrote:
Hello all
Is there a way to pull a static snapshot dataset from APRS-IS Database.  That is, connect --> get dataset (based on a few filters) --> disconnect. The purpose of this is to get a historical snapshot of data from the APRS-IS Database pool.  Is this query exposed today in APRS-IS infrastructure; or does one need to implement our own repository logic?

I have been able to pull realtime JIT data via establishing a TCP connection to the server pool on port 14580. So, I know we can do that.  But, I was not sure if it is possible to pull static historical dataset and *whether if that static view was even kept in the APRS-IS database pool*.

Any pointers here from the APRS-IS gurus

Thanks
Nagi


73, N0AGI-Nagi
[cid:image001.jpg at 01D08197.994BC970]
http://N0AGI.com/




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