optools/arch/arch_mirror_ranking.py

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#!/usr/bin/env python3
import argparse
import datetime
# import dns # TODO: replace server['ipv4'] with IPv4 address(es)? etc.
import json
import re
import sys
from urllib.request import urlopen
##
import iso3166
servers_json_url = 'https://www.archlinux.org/mirrors/status/json/'
protos = ('http', 'https', 'rsync')
class MirrorIdx(object):
def __init__(self, country = None, proto = None, is_active = None, json_url = servers_json_url,
name_re = None, ipv4 = None, ipv6 = None, isos = None, statuses = False, *args, **kwargs):
_tmpargs = locals()
del (_tmpargs['self'])
for k, v in _tmpargs.items():
setattr(self, k, v)
self.validateParams()
self.servers_json = {}
self.servers = []
self.servers_with_scores = []
self.ranked_servers = []
self.fetchJSON()
self.buildServers()
self.rankServers()
def fetchJSON(self):
if self.statuses:
sys.stderr.write('Fetching servers from {0}...\n'.format(self.json_url))
with urlopen(self.json_url) as u:
self.servers_json = json.load(u)
return()
def buildServers(self):
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_limiters = (self.proto, self.ipv4, self.ipv6, self.isos)
_filters = list(_limiters)
_filters.extend([self.name_re, self.country])
_filters = tuple(_filters)
if self.statuses:
sys.stderr.write('Applying filters (if any)...\n')
for s in self.servers_json['urls']:
# We handle these as "tri-value" (None, True, False)
if self.is_active is not None:
if s['active'] != self.is_active:
continue
if not any(_filters):
self.servers.append(s.copy())
if s['score']:
self.servers_with_scores.append(s)
continue
# These are based on string values.
if self.name_re:
if not self.name_re.search(s['url']):
continue
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if self.country:
if self.country != s['country_code']:
continue
# These are regular True/False switches
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match = False
# We want to be *very* explicit about the ordering and inclusion/exclusion of these.
# They MUST match the order of _limiters.
values = []
for k in ('protocol', 'ipv4', 'ipv6', 'isos'):
values.append(s[k])
valid = all([v for k, v in zip(_limiters, values) if k])
if valid:
self.servers.append(s)
if s['score']:
self.servers_with_scores.append(s)
return()
def rankServers(self):
if self.statuses:
sys.stderr.write('Ranking mirrors...\n')
self.ranked_servers = sorted(self.servers_with_scores, key = lambda i: i['score'])
return()
def validateParams(self):
if self.proto and self.proto.lower() not in protos:
err = '{0} must be one of: {1}'.format(self.proto, ', '.join([i.upper() for i in protos]))
raise ValueError(err)
elif self.proto:
self.proto = self.proto.upper()
if self.country and self.country.upper() not in iso3166.countries:
err = ('{0} must be a valid ISO-3166-1 ALPHA-2 country code. '
'See https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes'
'#Current_ISO_3166_country_codes').format(self.country)
raise ValueError()
elif self.country:
self.country = self.country.upper()
if self.name_re:
self.name_re = re.compile(self.name_re)
return()
def parseArgs():
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args = argparse.ArgumentParser(description = 'Fetch and rank Arch Linux mirrors')
args.add_argument('-c', '--country',
dest = 'country',
help = ('If specified, limit results to this country (in ISO-3166-1 ALPHA-2 format)'))
args.add_argument('-p', '--protocol',
choices = protos,
dest = 'proto',
help = ('If specified, limit results to this protocol'))
args.add_argument('-r', '--name-regex',
dest = 'name_re',
help = ('If specified, limit results to URLs that match this regex pattern (Python re syntax)'))
args.add_argument('-4', '--ipv4',
dest = 'ipv4',
action = 'store_true',
help = ('If specified, limit results to servers that support IPv4'))
args.add_argument('-6', '--ipv6',
dest = 'ipv6',
action = 'store_true',
help = ('If specified, limit results to servers that support IPv6'))
args.add_argument('-i', '--iso',
dest = 'isos',
action = 'store_true',
help = ('If specified, limit results to servers that have ISO images'))
is_active = args.add_mutually_exclusive_group()
is_active.add_argument('-a', '--active-only',
default = None,
const = True,
action = 'store_const',
dest = 'is_active',
help = ('If specified, only include active servers (default is active + inactive)'))
is_active.add_argument('-n', '--inactive-only',
default = None,
const = False,
action = 'store_const',
dest = 'is_active',
help = ('If specified, only include inactive servers (default is active + inactive)'))
return(args)
if __name__ == '__main__':
args = vars(parseArgs().parse_args())
m = MirrorIdx(**args, statuses = True)
for s in m.ranked_servers:
print('Server = {0}$repo/os/$arch'.format(s['url']))