[atlas] selecting probes based on place/city?

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On 07/08/15 16:17, Paul Vlaar wrote:
> Hi all,
> 
> I was wondering if anyone managed to come up with a method of
> getting a probe selection via the API that is based on city. The
> web interface allows this, by searching for "place", which is
> subsequently handled by the Google Maps API (I think), and which
> then comes back with a number of probes on the map, in that given
> place. However I need this in the API, which only allows to select
> probes based on "area, country, prefix, asn".
> 
> What I'm currently trying to come up with is a way to map, more or
> less, onto the list of ICANN specified probing locations for their
> DNS tests. This list is published here:
> 
> https://tld-monitor.icann.org/nodes.csv
> 
> I've been trying to go by the ASNs that the listed locations have
> their IP space in, but that frequently gives me a negative result
> (no probes present). The same for the prefixes themselves, of
> course. And just going by the enclosing country code is fine for a
> small place like Luxembourg, but not for a big country like
> Canada.
> 
> So if anyone has any ideas on how to achieve this in a dynamic way
> (so as not to have to manually build and maintain a list of
> probes), I'd be very interested in hearing about that.

I do have code to do the selection part of the process, that can
automate the selection of probes, if it helps I can put it on Github?

e1000$./select_probes.py -h
usage: select_probes.py [-h] [-v] [-l LOCSTRING] [-p POINT] [-r RADIUS]
                        [-n NUMBER] [-f FIELDS] [-a MAXPERAS] [-d]

optional arguments:
  -h, --help            show this help message and exit
  -v, --verbosity
  -l LOCSTRING, --locstring LOCSTRING
                        location string, ie 'Amsterdam,NL'
  -p POINT, --point POINT
                        location as <lat>,<lon>-string, ie '48.45,9.16'
  -r RADIUS, --radius RADIUS
                        radius (km) within which to select probes
  -n NUMBER, --number NUMBER
                        number of probes requested
  -f FIELDS, --fields FIELDS
                        comma separated list of fields to return
(output is
                        tsv)
  -a MAXPERAS, --maxperas MAXPERAS
                        maximum no. of probes per IPv4 source AS
  -d, --includedownprobes
                        include probes that are down (default: don't
include
                        these)


e1000$./select_probes.py -l "Maastricht,NL" -r 20 -f id,asn_v4
14648	9143
11917	9143
16979	61956
438	9143
20036	12392
18396	12392
13308	9143
13656	12392
16243	9143

cheers,
Emile

> 
> Thank you,
> 
> Paul Vlaar
> 

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