[osmosis-dev] Question regarding the replication file structure

[Frederik Ramm]

Hi,

    I'm toying with the idea of offering regionalised diffs - i.e. a 
series of daily diffs for every regional extract that 
download.geofabrik.de has to offer. To make it easy for consumers to 
keep their extracts up to date, I thought about making an Osmosis-style 
directory for each extract, e.g. something like

download.geofabrik.de/openstreetmap/europe/germany/nordrhein-westfalen/000/000/001.osc.gz 


or so. Just to be safe: What are the conventions that I will have to 
follow so that this works seamlessly with existing clients? Simply have 
a xxx.osc.gz and matching xxx.state.txt in the leaf directory, count 
from 000 to 999 then wrap to the next directory, and have the most 
recent state.txt file at the root directory as well - anything else?

If the frequency wasn't exactly daily - if, say, because of some sort of 
glitch there was extract for one day and therefore the diff is missing, 
or if there were two extracts in one day - would that matter?

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"